1257 lines
36 KiB
Go
1257 lines
36 KiB
Go
package assert
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import (
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"bufio"
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"bytes"
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"encoding/json"
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"errors"
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"fmt"
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"math"
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"os"
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"reflect"
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"regexp"
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"runtime"
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"strings"
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"time"
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"unicode"
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"unicode/utf8"
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"github.com/davecgh/go-spew/spew"
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"github.com/pmezard/go-difflib/difflib"
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)
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//go:generate go run ../_codegen/main.go -output-package=assert -template=assertion_format.go.tmpl
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// TestingT is an interface wrapper around *testing.T
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type TestingT interface {
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Errorf(format string, args ...interface{})
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}
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// Comparison a custom function that returns true on success and false on failure
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type Comparison func() (success bool)
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/*
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Helper functions
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*/
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// ObjectsAreEqual determines if two objects are considered equal.
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//
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// This function does no assertion of any kind.
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func ObjectsAreEqual(expected, actual interface{}) bool {
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if expected == nil || actual == nil {
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return expected == actual
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}
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if exp, ok := expected.([]byte); ok {
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act, ok := actual.([]byte)
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if !ok {
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return false
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} else if exp == nil || act == nil {
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return exp == nil && act == nil
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}
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return bytes.Equal(exp, act)
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}
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return reflect.DeepEqual(expected, actual)
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}
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// ObjectsAreEqualValues gets whether two objects are equal, or if their
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// values are equal.
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func ObjectsAreEqualValues(expected, actual interface{}) bool {
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if ObjectsAreEqual(expected, actual) {
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return true
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}
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actualType := reflect.TypeOf(actual)
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if actualType == nil {
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return false
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}
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expectedValue := reflect.ValueOf(expected)
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if expectedValue.IsValid() && expectedValue.Type().ConvertibleTo(actualType) {
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// Attempt comparison after type conversion
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return reflect.DeepEqual(expectedValue.Convert(actualType).Interface(), actual)
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}
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return false
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}
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/* CallerInfo is necessary because the assert functions use the testing object
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internally, causing it to print the file:line of the assert method, rather than where
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the problem actually occurred in calling code.*/
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// CallerInfo returns an array of strings containing the file and line number
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// of each stack frame leading from the current test to the assert call that
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// failed.
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func CallerInfo() []string {
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pc := uintptr(0)
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file := ""
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line := 0
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ok := false
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name := ""
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callers := []string{}
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for i := 0; ; i++ {
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pc, file, line, ok = runtime.Caller(i)
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if !ok {
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// The breaks below failed to terminate the loop, and we ran off the
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// end of the call stack.
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break
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}
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// This is a huge edge case, but it will panic if this is the case, see #180
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if file == "<autogenerated>" {
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break
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}
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f := runtime.FuncForPC(pc)
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if f == nil {
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break
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}
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name = f.Name()
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// testing.tRunner is the standard library function that calls
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// tests. Subtests are called directly by tRunner, without going through
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// the Test/Benchmark/Example function that contains the t.Run calls, so
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// with subtests we should break when we hit tRunner, without adding it
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// to the list of callers.
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if name == "testing.tRunner" {
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break
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}
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parts := strings.Split(file, "/")
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file = parts[len(parts)-1]
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if len(parts) > 1 {
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dir := parts[len(parts)-2]
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if (dir != "assert" && dir != "mock" && dir != "require") || file == "mock_test.go" {
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callers = append(callers, fmt.Sprintf("%s:%d", file, line))
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}
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}
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// Drop the package
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segments := strings.Split(name, ".")
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name = segments[len(segments)-1]
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if isTest(name, "Test") ||
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isTest(name, "Benchmark") ||
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isTest(name, "Example") {
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break
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}
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}
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return callers
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}
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// Stolen from the `go test` tool.
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// isTest tells whether name looks like a test (or benchmark, according to prefix).
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// It is a Test (say) if there is a character after Test that is not a lower-case letter.
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// We don't want TesticularCancer.
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func isTest(name, prefix string) bool {
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if !strings.HasPrefix(name, prefix) {
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return false
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}
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if len(name) == len(prefix) { // "Test" is ok
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return true
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}
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rune, _ := utf8.DecodeRuneInString(name[len(prefix):])
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return !unicode.IsLower(rune)
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}
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// getWhitespaceString returns a string that is long enough to overwrite the default
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// output from the go testing framework.
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func getWhitespaceString() string {
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_, file, line, ok := runtime.Caller(1)
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if !ok {
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return ""
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}
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parts := strings.Split(file, "/")
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file = parts[len(parts)-1]
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return strings.Repeat(" ", len(fmt.Sprintf("%s:%d: ", file, line)))
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}
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func messageFromMsgAndArgs(msgAndArgs ...interface{}) string {
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if len(msgAndArgs) == 0 || msgAndArgs == nil {
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return ""
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}
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if len(msgAndArgs) == 1 {
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return msgAndArgs[0].(string)
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}
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if len(msgAndArgs) > 1 {
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return fmt.Sprintf(msgAndArgs[0].(string), msgAndArgs[1:]...)
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}
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return ""
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}
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// Aligns the provided message so that all lines after the first line start at the same location as the first line.
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// Assumes that the first line starts at the correct location (after carriage return, tab, label, spacer and tab).
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// The longestLabelLen parameter specifies the length of the longest label in the output (required becaues this is the
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// basis on which the alignment occurs).
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func indentMessageLines(message string, longestLabelLen int) string {
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outBuf := new(bytes.Buffer)
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for i, scanner := 0, bufio.NewScanner(strings.NewReader(message)); scanner.Scan(); i++ {
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// no need to align first line because it starts at the correct location (after the label)
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if i != 0 {
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// append alignLen+1 spaces to align with "{{longestLabel}}:" before adding tab
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outBuf.WriteString("\n\r\t" + strings.Repeat(" ", longestLabelLen+1) + "\t")
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}
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outBuf.WriteString(scanner.Text())
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}
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return outBuf.String()
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}
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type failNower interface {
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FailNow()
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}
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// FailNow fails test
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func FailNow(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool {
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Fail(t, failureMessage, msgAndArgs...)
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// We cannot extend TestingT with FailNow() and
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// maintain backwards compatibility, so we fallback
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// to panicking when FailNow is not available in
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// TestingT.
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// See issue #263
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if t, ok := t.(failNower); ok {
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t.FailNow()
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} else {
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panic("test failed and t is missing `FailNow()`")
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}
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return false
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}
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// Fail reports a failure through
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func Fail(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool {
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content := []labeledContent{
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{"Error Trace", strings.Join(CallerInfo(), "\n\r\t\t\t")},
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{"Error", failureMessage},
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}
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// Add test name if the Go version supports it
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if n, ok := t.(interface {
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Name() string
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}); ok {
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content = append(content, labeledContent{"Test", n.Name()})
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}
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message := messageFromMsgAndArgs(msgAndArgs...)
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if len(message) > 0 {
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content = append(content, labeledContent{"Messages", message})
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}
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t.Errorf("%s", "\r"+getWhitespaceString()+labeledOutput(content...))
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return false
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}
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type labeledContent struct {
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label string
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content string
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}
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// labeledOutput returns a string consisting of the provided labeledContent. Each labeled output is appended in the following manner:
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//
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// \r\t{{label}}:{{align_spaces}}\t{{content}}\n
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//
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// The initial carriage return is required to undo/erase any padding added by testing.T.Errorf. The "\t{{label}}:" is for the label.
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// If a label is shorter than the longest label provided, padding spaces are added to make all the labels match in length. Once this
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// alignment is achieved, "\t{{content}}\n" is added for the output.
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//
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// If the content of the labeledOutput contains line breaks, the subsequent lines are aligned so that they start at the same location as the first line.
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func labeledOutput(content ...labeledContent) string {
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longestLabel := 0
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for _, v := range content {
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if len(v.label) > longestLabel {
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longestLabel = len(v.label)
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}
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}
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var output string
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for _, v := range content {
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output += "\r\t" + v.label + ":" + strings.Repeat(" ", longestLabel-len(v.label)) + "\t" + indentMessageLines(v.content, longestLabel) + "\n"
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}
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return output
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}
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// Implements asserts that an object is implemented by the specified interface.
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//
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// assert.Implements(t, (*MyInterface)(nil), new(MyObject))
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func Implements(t TestingT, interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool {
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interfaceType := reflect.TypeOf(interfaceObject).Elem()
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if object == nil {
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return Fail(t, fmt.Sprintf("Cannot check if nil implements %v", interfaceType), msgAndArgs...)
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}
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if !reflect.TypeOf(object).Implements(interfaceType) {
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return Fail(t, fmt.Sprintf("%T must implement %v", object, interfaceType), msgAndArgs...)
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}
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return true
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}
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// IsType asserts that the specified objects are of the same type.
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func IsType(t TestingT, expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool {
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if !ObjectsAreEqual(reflect.TypeOf(object), reflect.TypeOf(expectedType)) {
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return Fail(t, fmt.Sprintf("Object expected to be of type %v, but was %v", reflect.TypeOf(expectedType), reflect.TypeOf(object)), msgAndArgs...)
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}
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return true
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}
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// Equal asserts that two objects are equal.
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//
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// assert.Equal(t, 123, 123)
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//
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// Pointer variable equality is determined based on the equality of the
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// referenced values (as opposed to the memory addresses). Function equality
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// cannot be determined and will always fail.
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func Equal(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
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if err := validateEqualArgs(expected, actual); err != nil {
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return Fail(t, fmt.Sprintf("Invalid operation: %#v == %#v (%s)",
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expected, actual, err), msgAndArgs...)
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}
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if !ObjectsAreEqual(expected, actual) {
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diff := diff(expected, actual)
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expected, actual = formatUnequalValues(expected, actual)
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return Fail(t, fmt.Sprintf("Not equal: \n"+
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"expected: %s\n"+
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"actual : %s%s", expected, actual, diff), msgAndArgs...)
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}
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return true
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}
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// formatUnequalValues takes two values of arbitrary types and returns string
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// representations appropriate to be presented to the user.
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//
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// If the values are not of like type, the returned strings will be prefixed
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// with the type name, and the value will be enclosed in parenthesis similar
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// to a type conversion in the Go grammar.
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func formatUnequalValues(expected, actual interface{}) (e string, a string) {
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if reflect.TypeOf(expected) != reflect.TypeOf(actual) {
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return fmt.Sprintf("%T(%#v)", expected, expected),
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fmt.Sprintf("%T(%#v)", actual, actual)
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}
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return fmt.Sprintf("%#v", expected),
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fmt.Sprintf("%#v", actual)
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}
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// EqualValues asserts that two objects are equal or convertable to the same types
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// and equal.
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//
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// assert.EqualValues(t, uint32(123), int32(123))
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func EqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
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if !ObjectsAreEqualValues(expected, actual) {
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diff := diff(expected, actual)
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expected, actual = formatUnequalValues(expected, actual)
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return Fail(t, fmt.Sprintf("Not equal: \n"+
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"expected: %s\n"+
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"actual : %s%s", expected, actual, diff), msgAndArgs...)
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}
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return true
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}
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// Exactly asserts that two objects are equal in value and type.
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//
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// assert.Exactly(t, int32(123), int64(123))
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func Exactly(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
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aType := reflect.TypeOf(expected)
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bType := reflect.TypeOf(actual)
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if aType != bType {
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return Fail(t, fmt.Sprintf("Types expected to match exactly\n\r\t%v != %v", aType, bType), msgAndArgs...)
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}
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return Equal(t, expected, actual, msgAndArgs...)
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}
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// NotNil asserts that the specified object is not nil.
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//
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// assert.NotNil(t, err)
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func NotNil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
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if !isNil(object) {
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return true
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}
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return Fail(t, "Expected value not to be nil.", msgAndArgs...)
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}
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// isNil checks if a specified object is nil or not, without Failing.
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func isNil(object interface{}) bool {
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if object == nil {
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return true
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}
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value := reflect.ValueOf(object)
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kind := value.Kind()
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if kind >= reflect.Chan && kind <= reflect.Slice && value.IsNil() {
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return true
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}
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return false
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}
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// Nil asserts that the specified object is nil.
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//
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// assert.Nil(t, err)
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func Nil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
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if isNil(object) {
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return true
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}
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return Fail(t, fmt.Sprintf("Expected nil, but got: %#v", object), msgAndArgs...)
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}
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// isEmpty gets whether the specified object is considered empty or not.
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func isEmpty(object interface{}) bool {
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// get nil case out of the way
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if object == nil {
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return true
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}
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objValue := reflect.ValueOf(object)
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switch objValue.Kind() {
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// collection types are empty when they have no element
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case reflect.Array, reflect.Chan, reflect.Map, reflect.Slice:
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return objValue.Len() == 0
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// pointers are empty if nil or if the value they point to is empty
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case reflect.Ptr:
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if objValue.IsNil() {
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return true
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}
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deref := objValue.Elem().Interface()
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return isEmpty(deref)
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// for all other types, compare against the zero value
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default:
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zero := reflect.Zero(objValue.Type())
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return reflect.DeepEqual(object, zero.Interface())
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}
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}
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// Empty asserts that the specified object is empty. I.e. nil, "", false, 0 or either
|
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// a slice or a channel with len == 0.
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//
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// assert.Empty(t, obj)
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func Empty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
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pass := isEmpty(object)
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if !pass {
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Fail(t, fmt.Sprintf("Should be empty, but was %v", object), msgAndArgs...)
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}
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return pass
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}
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// NotEmpty asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either
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// a slice or a channel with len == 0.
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//
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// if assert.NotEmpty(t, obj) {
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// assert.Equal(t, "two", obj[1])
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// }
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func NotEmpty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
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pass := !isEmpty(object)
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if !pass {
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Fail(t, fmt.Sprintf("Should NOT be empty, but was %v", object), msgAndArgs...)
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}
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return pass
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|
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}
|
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|
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// getLen try to get length of object.
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// return (false, 0) if impossible.
|
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func getLen(x interface{}) (ok bool, length int) {
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v := reflect.ValueOf(x)
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defer func() {
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if e := recover(); e != nil {
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ok = false
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}
|
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}()
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return true, v.Len()
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}
|
|
|
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// Len asserts that the specified object has specific length.
|
|
// Len also fails if the object has a type that len() not accept.
|
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//
|
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// assert.Len(t, mySlice, 3)
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func Len(t TestingT, object interface{}, length int, msgAndArgs ...interface{}) bool {
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ok, l := getLen(object)
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if !ok {
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return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", object), msgAndArgs...)
|
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}
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|
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if l != length {
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return Fail(t, fmt.Sprintf("\"%s\" should have %d item(s), but has %d", object, length, l), msgAndArgs...)
|
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}
|
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return true
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}
|
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|
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// True asserts that the specified value is true.
|
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//
|
|
// assert.True(t, myBool)
|
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func True(t TestingT, value bool, msgAndArgs ...interface{}) bool {
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|
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if value != true {
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return Fail(t, "Should be true", msgAndArgs...)
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}
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|
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return true
|
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|
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}
|
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|
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// False asserts that the specified value is false.
|
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//
|
|
// assert.False(t, myBool)
|
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func False(t TestingT, value bool, msgAndArgs ...interface{}) bool {
|
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|
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if value != false {
|
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return Fail(t, "Should be false", msgAndArgs...)
|
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}
|
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|
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return true
|
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|
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}
|
|
|
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// NotEqual asserts that the specified values are NOT equal.
|
|
//
|
|
// assert.NotEqual(t, obj1, obj2)
|
|
//
|
|
// Pointer variable equality is determined based on the equality of the
|
|
// referenced values (as opposed to the memory addresses).
|
|
func NotEqual(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
|
|
if err := validateEqualArgs(expected, actual); err != nil {
|
|
return Fail(t, fmt.Sprintf("Invalid operation: %#v != %#v (%s)",
|
|
expected, actual, err), msgAndArgs...)
|
|
}
|
|
|
|
if ObjectsAreEqual(expected, actual) {
|
|
return Fail(t, fmt.Sprintf("Should not be: %#v\n", actual), msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
// containsElement try loop over the list check if the list includes the element.
|
|
// return (false, false) if impossible.
|
|
// return (true, false) if element was not found.
|
|
// return (true, true) if element was found.
|
|
func includeElement(list interface{}, element interface{}) (ok, found bool) {
|
|
|
|
listValue := reflect.ValueOf(list)
|
|
elementValue := reflect.ValueOf(element)
|
|
defer func() {
|
|
if e := recover(); e != nil {
|
|
ok = false
|
|
found = false
|
|
}
|
|
}()
|
|
|
|
if reflect.TypeOf(list).Kind() == reflect.String {
|
|
return true, strings.Contains(listValue.String(), elementValue.String())
|
|
}
|
|
|
|
if reflect.TypeOf(list).Kind() == reflect.Map {
|
|
mapKeys := listValue.MapKeys()
|
|
for i := 0; i < len(mapKeys); i++ {
|
|
if ObjectsAreEqual(mapKeys[i].Interface(), element) {
|
|
return true, true
|
|
}
|
|
}
|
|
return true, false
|
|
}
|
|
|
|
for i := 0; i < listValue.Len(); i++ {
|
|
if ObjectsAreEqual(listValue.Index(i).Interface(), element) {
|
|
return true, true
|
|
}
|
|
}
|
|
return true, false
|
|
|
|
}
|
|
|
|
// Contains asserts that the specified string, list(array, slice...) or map contains the
|
|
// specified substring or element.
|
|
//
|
|
// assert.Contains(t, "Hello World", "World")
|
|
// assert.Contains(t, ["Hello", "World"], "World")
|
|
// assert.Contains(t, {"Hello": "World"}, "Hello")
|
|
func Contains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool {
|
|
|
|
ok, found := includeElement(s, contains)
|
|
if !ok {
|
|
return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", s), msgAndArgs...)
|
|
}
|
|
if !found {
|
|
return Fail(t, fmt.Sprintf("\"%s\" does not contain \"%s\"", s, contains), msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
// NotContains asserts that the specified string, list(array, slice...) or map does NOT contain the
|
|
// specified substring or element.
|
|
//
|
|
// assert.NotContains(t, "Hello World", "Earth")
|
|
// assert.NotContains(t, ["Hello", "World"], "Earth")
|
|
// assert.NotContains(t, {"Hello": "World"}, "Earth")
|
|
func NotContains(t TestingT, s, contains interface{}, msgAndArgs ...interface{}) bool {
|
|
|
|
ok, found := includeElement(s, contains)
|
|
if !ok {
|
|
return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", s), msgAndArgs...)
|
|
}
|
|
if found {
|
|
return Fail(t, fmt.Sprintf("\"%s\" should not contain \"%s\"", s, contains), msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
// Subset asserts that the specified list(array, slice...) contains all
|
|
// elements given in the specified subset(array, slice...).
|
|
//
|
|
// assert.Subset(t, [1, 2, 3], [1, 2], "But [1, 2, 3] does contain [1, 2]")
|
|
func Subset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool) {
|
|
if subset == nil {
|
|
return true // we consider nil to be equal to the nil set
|
|
}
|
|
|
|
subsetValue := reflect.ValueOf(subset)
|
|
defer func() {
|
|
if e := recover(); e != nil {
|
|
ok = false
|
|
}
|
|
}()
|
|
|
|
listKind := reflect.TypeOf(list).Kind()
|
|
subsetKind := reflect.TypeOf(subset).Kind()
|
|
|
|
if listKind != reflect.Array && listKind != reflect.Slice {
|
|
return Fail(t, fmt.Sprintf("%q has an unsupported type %s", list, listKind), msgAndArgs...)
|
|
}
|
|
|
|
if subsetKind != reflect.Array && subsetKind != reflect.Slice {
|
|
return Fail(t, fmt.Sprintf("%q has an unsupported type %s", subset, subsetKind), msgAndArgs...)
|
|
}
|
|
|
|
for i := 0; i < subsetValue.Len(); i++ {
|
|
element := subsetValue.Index(i).Interface()
|
|
ok, found := includeElement(list, element)
|
|
if !ok {
|
|
return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", list), msgAndArgs...)
|
|
}
|
|
if !found {
|
|
return Fail(t, fmt.Sprintf("\"%s\" does not contain \"%s\"", list, element), msgAndArgs...)
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// NotSubset asserts that the specified list(array, slice...) contains not all
|
|
// elements given in the specified subset(array, slice...).
|
|
//
|
|
// assert.NotSubset(t, [1, 3, 4], [1, 2], "But [1, 3, 4] does not contain [1, 2]")
|
|
func NotSubset(t TestingT, list, subset interface{}, msgAndArgs ...interface{}) (ok bool) {
|
|
if subset == nil {
|
|
return Fail(t, fmt.Sprintf("nil is the empty set which is a subset of every set"), msgAndArgs...)
|
|
}
|
|
|
|
subsetValue := reflect.ValueOf(subset)
|
|
defer func() {
|
|
if e := recover(); e != nil {
|
|
ok = false
|
|
}
|
|
}()
|
|
|
|
listKind := reflect.TypeOf(list).Kind()
|
|
subsetKind := reflect.TypeOf(subset).Kind()
|
|
|
|
if listKind != reflect.Array && listKind != reflect.Slice {
|
|
return Fail(t, fmt.Sprintf("%q has an unsupported type %s", list, listKind), msgAndArgs...)
|
|
}
|
|
|
|
if subsetKind != reflect.Array && subsetKind != reflect.Slice {
|
|
return Fail(t, fmt.Sprintf("%q has an unsupported type %s", subset, subsetKind), msgAndArgs...)
|
|
}
|
|
|
|
for i := 0; i < subsetValue.Len(); i++ {
|
|
element := subsetValue.Index(i).Interface()
|
|
ok, found := includeElement(list, element)
|
|
if !ok {
|
|
return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", list), msgAndArgs...)
|
|
}
|
|
if !found {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return Fail(t, fmt.Sprintf("%q is a subset of %q", subset, list), msgAndArgs...)
|
|
}
|
|
|
|
// ElementsMatch asserts that the specified listA(array, slice...) is equal to specified
|
|
// listB(array, slice...) ignoring the order of the elements. If there are duplicate elements,
|
|
// the number of appearances of each of them in both lists should match.
|
|
//
|
|
// assert.ElementsMatch(t, [1, 3, 2, 3], [1, 3, 3, 2])
|
|
func ElementsMatch(t TestingT, listA, listB interface{}, msgAndArgs ...interface{}) (ok bool) {
|
|
if isEmpty(listA) && isEmpty(listB) {
|
|
return true
|
|
}
|
|
|
|
aKind := reflect.TypeOf(listA).Kind()
|
|
bKind := reflect.TypeOf(listB).Kind()
|
|
|
|
if aKind != reflect.Array && aKind != reflect.Slice {
|
|
return Fail(t, fmt.Sprintf("%q has an unsupported type %s", listA, aKind), msgAndArgs...)
|
|
}
|
|
|
|
if bKind != reflect.Array && bKind != reflect.Slice {
|
|
return Fail(t, fmt.Sprintf("%q has an unsupported type %s", listB, bKind), msgAndArgs...)
|
|
}
|
|
|
|
aValue := reflect.ValueOf(listA)
|
|
bValue := reflect.ValueOf(listB)
|
|
|
|
aLen := aValue.Len()
|
|
bLen := bValue.Len()
|
|
|
|
if aLen != bLen {
|
|
return Fail(t, fmt.Sprintf("lengths don't match: %d != %d", aLen, bLen), msgAndArgs...)
|
|
}
|
|
|
|
// Mark indexes in bValue that we already used
|
|
visited := make([]bool, bLen)
|
|
for i := 0; i < aLen; i++ {
|
|
element := aValue.Index(i).Interface()
|
|
found := false
|
|
for j := 0; j < bLen; j++ {
|
|
if visited[j] {
|
|
continue
|
|
}
|
|
if ObjectsAreEqual(bValue.Index(j).Interface(), element) {
|
|
visited[j] = true
|
|
found = true
|
|
break
|
|
}
|
|
}
|
|
if !found {
|
|
return Fail(t, fmt.Sprintf("element %s appears more times in %s than in %s", element, aValue, bValue), msgAndArgs...)
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// Condition uses a Comparison to assert a complex condition.
|
|
func Condition(t TestingT, comp Comparison, msgAndArgs ...interface{}) bool {
|
|
result := comp()
|
|
if !result {
|
|
Fail(t, "Condition failed!", msgAndArgs...)
|
|
}
|
|
return result
|
|
}
|
|
|
|
// PanicTestFunc defines a func that should be passed to the assert.Panics and assert.NotPanics
|
|
// methods, and represents a simple func that takes no arguments, and returns nothing.
|
|
type PanicTestFunc func()
|
|
|
|
// didPanic returns true if the function passed to it panics. Otherwise, it returns false.
|
|
func didPanic(f PanicTestFunc) (bool, interface{}) {
|
|
|
|
didPanic := false
|
|
var message interface{}
|
|
func() {
|
|
|
|
defer func() {
|
|
if message = recover(); message != nil {
|
|
didPanic = true
|
|
}
|
|
}()
|
|
|
|
// call the target function
|
|
f()
|
|
|
|
}()
|
|
|
|
return didPanic, message
|
|
|
|
}
|
|
|
|
// Panics asserts that the code inside the specified PanicTestFunc panics.
|
|
//
|
|
// assert.Panics(t, func(){ GoCrazy() })
|
|
func Panics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
|
|
|
|
if funcDidPanic, panicValue := didPanic(f); !funcDidPanic {
|
|
return Fail(t, fmt.Sprintf("func %#v should panic\n\r\tPanic value:\t%v", f, panicValue), msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// PanicsWithValue asserts that the code inside the specified PanicTestFunc panics, and that
|
|
// the recovered panic value equals the expected panic value.
|
|
//
|
|
// assert.PanicsWithValue(t, "crazy error", func(){ GoCrazy() })
|
|
func PanicsWithValue(t TestingT, expected interface{}, f PanicTestFunc, msgAndArgs ...interface{}) bool {
|
|
|
|
funcDidPanic, panicValue := didPanic(f)
|
|
if !funcDidPanic {
|
|
return Fail(t, fmt.Sprintf("func %#v should panic\n\r\tPanic value:\t%v", f, panicValue), msgAndArgs...)
|
|
}
|
|
if panicValue != expected {
|
|
return Fail(t, fmt.Sprintf("func %#v should panic with value:\t%v\n\r\tPanic value:\t%v", f, expected, panicValue), msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
|
|
//
|
|
// assert.NotPanics(t, func(){ RemainCalm() })
|
|
func NotPanics(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool {
|
|
|
|
if funcDidPanic, panicValue := didPanic(f); funcDidPanic {
|
|
return Fail(t, fmt.Sprintf("func %#v should not panic\n\r\tPanic value:\t%v", f, panicValue), msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// WithinDuration asserts that the two times are within duration delta of each other.
|
|
//
|
|
// assert.WithinDuration(t, time.Now(), time.Now(), 10*time.Second)
|
|
func WithinDuration(t TestingT, expected, actual time.Time, delta time.Duration, msgAndArgs ...interface{}) bool {
|
|
|
|
dt := expected.Sub(actual)
|
|
if dt < -delta || dt > delta {
|
|
return Fail(t, fmt.Sprintf("Max difference between %v and %v allowed is %v, but difference was %v", expected, actual, delta, dt), msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func toFloat(x interface{}) (float64, bool) {
|
|
var xf float64
|
|
xok := true
|
|
|
|
switch xn := x.(type) {
|
|
case uint8:
|
|
xf = float64(xn)
|
|
case uint16:
|
|
xf = float64(xn)
|
|
case uint32:
|
|
xf = float64(xn)
|
|
case uint64:
|
|
xf = float64(xn)
|
|
case int:
|
|
xf = float64(xn)
|
|
case int8:
|
|
xf = float64(xn)
|
|
case int16:
|
|
xf = float64(xn)
|
|
case int32:
|
|
xf = float64(xn)
|
|
case int64:
|
|
xf = float64(xn)
|
|
case float32:
|
|
xf = float64(xn)
|
|
case float64:
|
|
xf = float64(xn)
|
|
case time.Duration:
|
|
xf = float64(xn)
|
|
default:
|
|
xok = false
|
|
}
|
|
|
|
return xf, xok
|
|
}
|
|
|
|
// InDelta asserts that the two numerals are within delta of each other.
|
|
//
|
|
// assert.InDelta(t, math.Pi, (22 / 7.0), 0.01)
|
|
func InDelta(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
|
|
|
|
af, aok := toFloat(expected)
|
|
bf, bok := toFloat(actual)
|
|
|
|
if !aok || !bok {
|
|
return Fail(t, fmt.Sprintf("Parameters must be numerical"), msgAndArgs...)
|
|
}
|
|
|
|
if math.IsNaN(af) {
|
|
return Fail(t, fmt.Sprintf("Expected must not be NaN"), msgAndArgs...)
|
|
}
|
|
|
|
if math.IsNaN(bf) {
|
|
return Fail(t, fmt.Sprintf("Expected %v with delta %v, but was NaN", expected, delta), msgAndArgs...)
|
|
}
|
|
|
|
dt := af - bf
|
|
if dt < -delta || dt > delta {
|
|
return Fail(t, fmt.Sprintf("Max difference between %v and %v allowed is %v, but difference was %v", expected, actual, delta, dt), msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// InDeltaSlice is the same as InDelta, except it compares two slices.
|
|
func InDeltaSlice(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
|
|
if expected == nil || actual == nil ||
|
|
reflect.TypeOf(actual).Kind() != reflect.Slice ||
|
|
reflect.TypeOf(expected).Kind() != reflect.Slice {
|
|
return Fail(t, fmt.Sprintf("Parameters must be slice"), msgAndArgs...)
|
|
}
|
|
|
|
actualSlice := reflect.ValueOf(actual)
|
|
expectedSlice := reflect.ValueOf(expected)
|
|
|
|
for i := 0; i < actualSlice.Len(); i++ {
|
|
result := InDelta(t, actualSlice.Index(i).Interface(), expectedSlice.Index(i).Interface(), delta, msgAndArgs...)
|
|
if !result {
|
|
return result
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// InDeltaMapValues is the same as InDelta, but it compares all values between two maps. Both maps must have exactly the same keys.
|
|
func InDeltaMapValues(t TestingT, expected, actual interface{}, delta float64, msgAndArgs ...interface{}) bool {
|
|
if expected == nil || actual == nil ||
|
|
reflect.TypeOf(actual).Kind() != reflect.Map ||
|
|
reflect.TypeOf(expected).Kind() != reflect.Map {
|
|
return Fail(t, "Arguments must be maps", msgAndArgs...)
|
|
}
|
|
|
|
expectedMap := reflect.ValueOf(expected)
|
|
actualMap := reflect.ValueOf(actual)
|
|
|
|
if expectedMap.Len() != actualMap.Len() {
|
|
return Fail(t, "Arguments must have the same number of keys", msgAndArgs...)
|
|
}
|
|
|
|
for _, k := range expectedMap.MapKeys() {
|
|
ev := expectedMap.MapIndex(k)
|
|
av := actualMap.MapIndex(k)
|
|
|
|
if !ev.IsValid() {
|
|
return Fail(t, fmt.Sprintf("missing key %q in expected map", k), msgAndArgs...)
|
|
}
|
|
|
|
if !av.IsValid() {
|
|
return Fail(t, fmt.Sprintf("missing key %q in actual map", k), msgAndArgs...)
|
|
}
|
|
|
|
if !InDelta(
|
|
t,
|
|
ev.Interface(),
|
|
av.Interface(),
|
|
delta,
|
|
msgAndArgs...,
|
|
) {
|
|
return false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func calcRelativeError(expected, actual interface{}) (float64, error) {
|
|
af, aok := toFloat(expected)
|
|
if !aok {
|
|
return 0, fmt.Errorf("expected value %q cannot be converted to float", expected)
|
|
}
|
|
if af == 0 {
|
|
return 0, fmt.Errorf("expected value must have a value other than zero to calculate the relative error")
|
|
}
|
|
bf, bok := toFloat(actual)
|
|
if !bok {
|
|
return 0, fmt.Errorf("actual value %q cannot be converted to float", actual)
|
|
}
|
|
|
|
return math.Abs(af-bf) / math.Abs(af), nil
|
|
}
|
|
|
|
// InEpsilon asserts that expected and actual have a relative error less than epsilon
|
|
func InEpsilon(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
|
|
actualEpsilon, err := calcRelativeError(expected, actual)
|
|
if err != nil {
|
|
return Fail(t, err.Error(), msgAndArgs...)
|
|
}
|
|
if actualEpsilon > epsilon {
|
|
return Fail(t, fmt.Sprintf("Relative error is too high: %#v (expected)\n"+
|
|
" < %#v (actual)", epsilon, actualEpsilon), msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// InEpsilonSlice is the same as InEpsilon, except it compares each value from two slices.
|
|
func InEpsilonSlice(t TestingT, expected, actual interface{}, epsilon float64, msgAndArgs ...interface{}) bool {
|
|
if expected == nil || actual == nil ||
|
|
reflect.TypeOf(actual).Kind() != reflect.Slice ||
|
|
reflect.TypeOf(expected).Kind() != reflect.Slice {
|
|
return Fail(t, fmt.Sprintf("Parameters must be slice"), msgAndArgs...)
|
|
}
|
|
|
|
actualSlice := reflect.ValueOf(actual)
|
|
expectedSlice := reflect.ValueOf(expected)
|
|
|
|
for i := 0; i < actualSlice.Len(); i++ {
|
|
result := InEpsilon(t, actualSlice.Index(i).Interface(), expectedSlice.Index(i).Interface(), epsilon)
|
|
if !result {
|
|
return result
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
/*
|
|
Errors
|
|
*/
|
|
|
|
// NoError asserts that a function returned no error (i.e. `nil`).
|
|
//
|
|
// actualObj, err := SomeFunction()
|
|
// if assert.NoError(t, err) {
|
|
// assert.Equal(t, expectedObj, actualObj)
|
|
// }
|
|
func NoError(t TestingT, err error, msgAndArgs ...interface{}) bool {
|
|
if err != nil {
|
|
return Fail(t, fmt.Sprintf("Received unexpected error:\n%+v", err), msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// Error asserts that a function returned an error (i.e. not `nil`).
|
|
//
|
|
// actualObj, err := SomeFunction()
|
|
// if assert.Error(t, err) {
|
|
// assert.Equal(t, expectedError, err)
|
|
// }
|
|
func Error(t TestingT, err error, msgAndArgs ...interface{}) bool {
|
|
|
|
if err == nil {
|
|
return Fail(t, "An error is expected but got nil.", msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
// EqualError asserts that a function returned an error (i.e. not `nil`)
|
|
// and that it is equal to the provided error.
|
|
//
|
|
// actualObj, err := SomeFunction()
|
|
// assert.EqualError(t, err, expectedErrorString)
|
|
func EqualError(t TestingT, theError error, errString string, msgAndArgs ...interface{}) bool {
|
|
if !Error(t, theError, msgAndArgs...) {
|
|
return false
|
|
}
|
|
expected := errString
|
|
actual := theError.Error()
|
|
// don't need to use deep equals here, we know they are both strings
|
|
if expected != actual {
|
|
return Fail(t, fmt.Sprintf("Error message not equal:\n"+
|
|
"expected: %q\n"+
|
|
"actual : %q", expected, actual), msgAndArgs...)
|
|
}
|
|
return true
|
|
}
|
|
|
|
// matchRegexp return true if a specified regexp matches a string.
|
|
func matchRegexp(rx interface{}, str interface{}) bool {
|
|
|
|
var r *regexp.Regexp
|
|
if rr, ok := rx.(*regexp.Regexp); ok {
|
|
r = rr
|
|
} else {
|
|
r = regexp.MustCompile(fmt.Sprint(rx))
|
|
}
|
|
|
|
return (r.FindStringIndex(fmt.Sprint(str)) != nil)
|
|
|
|
}
|
|
|
|
// Regexp asserts that a specified regexp matches a string.
|
|
//
|
|
// assert.Regexp(t, regexp.MustCompile("start"), "it's starting")
|
|
// assert.Regexp(t, "start...$", "it's not starting")
|
|
func Regexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
|
|
|
|
match := matchRegexp(rx, str)
|
|
|
|
if !match {
|
|
Fail(t, fmt.Sprintf("Expect \"%v\" to match \"%v\"", str, rx), msgAndArgs...)
|
|
}
|
|
|
|
return match
|
|
}
|
|
|
|
// NotRegexp asserts that a specified regexp does not match a string.
|
|
//
|
|
// assert.NotRegexp(t, regexp.MustCompile("starts"), "it's starting")
|
|
// assert.NotRegexp(t, "^start", "it's not starting")
|
|
func NotRegexp(t TestingT, rx interface{}, str interface{}, msgAndArgs ...interface{}) bool {
|
|
match := matchRegexp(rx, str)
|
|
|
|
if match {
|
|
Fail(t, fmt.Sprintf("Expect \"%v\" to NOT match \"%v\"", str, rx), msgAndArgs...)
|
|
}
|
|
|
|
return !match
|
|
|
|
}
|
|
|
|
// Zero asserts that i is the zero value for its type.
|
|
func Zero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool {
|
|
if i != nil && !reflect.DeepEqual(i, reflect.Zero(reflect.TypeOf(i)).Interface()) {
|
|
return Fail(t, fmt.Sprintf("Should be zero, but was %v", i), msgAndArgs...)
|
|
}
|
|
return true
|
|
}
|
|
|
|
// NotZero asserts that i is not the zero value for its type.
|
|
func NotZero(t TestingT, i interface{}, msgAndArgs ...interface{}) bool {
|
|
if i == nil || reflect.DeepEqual(i, reflect.Zero(reflect.TypeOf(i)).Interface()) {
|
|
return Fail(t, fmt.Sprintf("Should not be zero, but was %v", i), msgAndArgs...)
|
|
}
|
|
return true
|
|
}
|
|
|
|
// FileExists checks whether a file exists in the given path. It also fails if the path points to a directory or there is an error when trying to check the file.
|
|
func FileExists(t TestingT, path string, msgAndArgs ...interface{}) bool {
|
|
info, err := os.Lstat(path)
|
|
if err != nil {
|
|
if os.IsNotExist(err) {
|
|
return Fail(t, fmt.Sprintf("unable to find file %q", path), msgAndArgs...)
|
|
}
|
|
return Fail(t, fmt.Sprintf("error when running os.Lstat(%q): %s", path, err), msgAndArgs...)
|
|
}
|
|
if info.IsDir() {
|
|
return Fail(t, fmt.Sprintf("%q is a directory", path), msgAndArgs...)
|
|
}
|
|
return true
|
|
}
|
|
|
|
// DirExists checks whether a directory exists in the given path. It also fails if the path is a file rather a directory or there is an error checking whether it exists.
|
|
func DirExists(t TestingT, path string, msgAndArgs ...interface{}) bool {
|
|
info, err := os.Lstat(path)
|
|
if err != nil {
|
|
if os.IsNotExist(err) {
|
|
return Fail(t, fmt.Sprintf("unable to find file %q", path), msgAndArgs...)
|
|
}
|
|
return Fail(t, fmt.Sprintf("error when running os.Lstat(%q): %s", path, err), msgAndArgs...)
|
|
}
|
|
if !info.IsDir() {
|
|
return Fail(t, fmt.Sprintf("%q is a file", path), msgAndArgs...)
|
|
}
|
|
return true
|
|
}
|
|
|
|
// JSONEq asserts that two JSON strings are equivalent.
|
|
//
|
|
// assert.JSONEq(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
|
|
func JSONEq(t TestingT, expected string, actual string, msgAndArgs ...interface{}) bool {
|
|
var expectedJSONAsInterface, actualJSONAsInterface interface{}
|
|
|
|
if err := json.Unmarshal([]byte(expected), &expectedJSONAsInterface); err != nil {
|
|
return Fail(t, fmt.Sprintf("Expected value ('%s') is not valid json.\nJSON parsing error: '%s'", expected, err.Error()), msgAndArgs...)
|
|
}
|
|
|
|
if err := json.Unmarshal([]byte(actual), &actualJSONAsInterface); err != nil {
|
|
return Fail(t, fmt.Sprintf("Input ('%s') needs to be valid json.\nJSON parsing error: '%s'", actual, err.Error()), msgAndArgs...)
|
|
}
|
|
|
|
return Equal(t, expectedJSONAsInterface, actualJSONAsInterface, msgAndArgs...)
|
|
}
|
|
|
|
func typeAndKind(v interface{}) (reflect.Type, reflect.Kind) {
|
|
t := reflect.TypeOf(v)
|
|
k := t.Kind()
|
|
|
|
if k == reflect.Ptr {
|
|
t = t.Elem()
|
|
k = t.Kind()
|
|
}
|
|
return t, k
|
|
}
|
|
|
|
// diff returns a diff of both values as long as both are of the same type and
|
|
// are a struct, map, slice or array. Otherwise it returns an empty string.
|
|
func diff(expected interface{}, actual interface{}) string {
|
|
if expected == nil || actual == nil {
|
|
return ""
|
|
}
|
|
|
|
et, ek := typeAndKind(expected)
|
|
at, _ := typeAndKind(actual)
|
|
|
|
if et != at {
|
|
return ""
|
|
}
|
|
|
|
if ek != reflect.Struct && ek != reflect.Map && ek != reflect.Slice && ek != reflect.Array {
|
|
return ""
|
|
}
|
|
|
|
e := spewConfig.Sdump(expected)
|
|
a := spewConfig.Sdump(actual)
|
|
|
|
diff, _ := difflib.GetUnifiedDiffString(difflib.UnifiedDiff{
|
|
A: difflib.SplitLines(e),
|
|
B: difflib.SplitLines(a),
|
|
FromFile: "Expected",
|
|
FromDate: "",
|
|
ToFile: "Actual",
|
|
ToDate: "",
|
|
Context: 1,
|
|
})
|
|
|
|
return "\n\nDiff:\n" + diff
|
|
}
|
|
|
|
// validateEqualArgs checks whether provided arguments can be safely used in the
|
|
// Equal/NotEqual functions.
|
|
func validateEqualArgs(expected, actual interface{}) error {
|
|
if isFunction(expected) || isFunction(actual) {
|
|
return errors.New("cannot take func type as argument")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func isFunction(arg interface{}) bool {
|
|
if arg == nil {
|
|
return false
|
|
}
|
|
return reflect.TypeOf(arg).Kind() == reflect.Func
|
|
}
|
|
|
|
var spewConfig = spew.ConfigState{
|
|
Indent: " ",
|
|
DisablePointerAddresses: true,
|
|
DisableCapacities: true,
|
|
SortKeys: true,
|
|
}
|