1061 lines
29 KiB
Go
1061 lines
29 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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"fmt"
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"math"
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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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func init() {
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spew.Config.SortKeys = true
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}
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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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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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dir := parts[len(parts)-2]
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file = parts[len(parts)-1]
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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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// 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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// Indents all lines of the message by appending a number of tabs to each line, in an output format compatible with Go's
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// test printing (see inner comment for specifics)
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func indentMessageLines(message string, tabs 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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if i != 0 {
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outBuf.WriteRune('\n')
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}
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for ii := 0; ii < tabs; ii++ {
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outBuf.WriteRune('\t')
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// Bizarrely, all lines except the first need one fewer tabs prepended, so deliberately advance the counter
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// by 1 prematurely.
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if ii == 0 && i > 0 {
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ii++
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}
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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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message := messageFromMsgAndArgs(msgAndArgs...)
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errorTrace := strings.Join(CallerInfo(), "\n\r\t\t\t")
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if len(message) > 0 {
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t.Errorf("\r%s\r\tError Trace:\t%s\n"+
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"\r\tError:%s\n"+
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"\r\tMessages:\t%s\n\r",
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getWhitespaceString(),
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errorTrace,
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indentMessageLines(failureMessage, 2),
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message)
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} else {
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t.Errorf("\r%s\r\tError Trace:\t%s\n"+
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"\r\tError:%s\n\r",
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getWhitespaceString(),
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errorTrace,
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indentMessageLines(failureMessage, 2))
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}
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return false
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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), "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 !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, "123 and 123 should be equal")
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//
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// Returns whether the assertion was successful (true) or not (false).
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func Equal(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
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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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"received: %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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aType := reflect.TypeOf(expected)
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bType := reflect.TypeOf(actual)
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if aType != bType && isNumericType(aType) && isNumericType(bType) {
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return fmt.Sprintf("%v(%#v)", aType, expected),
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fmt.Sprintf("%v(%#v)", bType, 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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func isNumericType(t reflect.Type) bool {
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switch t.Kind() {
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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return true
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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return true
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case reflect.Float32, reflect.Float64:
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return true
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}
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return false
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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), "123 and 123 should be equal")
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//
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// Returns whether the assertion was successful (true) or not (false).
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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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"received: %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 is value and type.
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//
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// assert.Exactly(t, int32(123), int64(123), "123 and 123 should NOT be equal")
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//
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// Returns whether the assertion was successful (true) or not (false).
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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, "err should be something")
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//
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// Returns whether the assertion was successful (true) or not (false).
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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, "err should be nothing")
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//
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// Returns whether the assertion was successful (true) or not (false).
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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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var numericZeros = []interface{}{
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int(0),
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int8(0),
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int16(0),
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int32(0),
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int64(0),
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uint(0),
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uint8(0),
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uint16(0),
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uint32(0),
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uint64(0),
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float32(0),
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float64(0),
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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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if object == nil {
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return true
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} else if object == "" {
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return true
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} else if object == false {
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return true
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}
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for _, v := range numericZeros {
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if object == v {
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return true
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}
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}
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objValue := reflect.ValueOf(object)
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switch objValue.Kind() {
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case reflect.Map:
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fallthrough
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case reflect.Slice, reflect.Chan:
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{
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return (objValue.Len() == 0)
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}
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case reflect.Struct:
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switch object.(type) {
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case time.Time:
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return object.(time.Time).IsZero()
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}
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case reflect.Ptr:
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{
|
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if objValue.IsNil() {
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return true
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}
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switch object.(type) {
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case *time.Time:
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return object.(*time.Time).IsZero()
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default:
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return false
|
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}
|
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}
|
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}
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return false
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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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//
|
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// Returns whether the assertion was successful (true) or not (false).
|
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func Empty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
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|
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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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//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
func NotEmpty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
|
|
|
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pass := !isEmpty(object)
|
|
if !pass {
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Fail(t, fmt.Sprintf("Should NOT be empty, but was %v", object), msgAndArgs...)
|
|
}
|
|
|
|
return pass
|
|
|
|
}
|
|
|
|
// getLen try to get length of object.
|
|
// return (false, 0) if impossible.
|
|
func getLen(x interface{}) (ok bool, length int) {
|
|
v := reflect.ValueOf(x)
|
|
defer func() {
|
|
if e := recover(); e != nil {
|
|
ok = false
|
|
}
|
|
}()
|
|
return true, v.Len()
|
|
}
|
|
|
|
// Len asserts that the specified object has specific length.
|
|
// Len also fails if the object has a type that len() not accept.
|
|
//
|
|
// assert.Len(t, mySlice, 3, "The size of slice is not 3")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
func Len(t TestingT, object interface{}, length int, msgAndArgs ...interface{}) bool {
|
|
ok, l := getLen(object)
|
|
if !ok {
|
|
return Fail(t, fmt.Sprintf("\"%s\" could not be applied builtin len()", object), msgAndArgs...)
|
|
}
|
|
|
|
if l != length {
|
|
return Fail(t, fmt.Sprintf("\"%s\" should have %d item(s), but has %d", object, length, l), msgAndArgs...)
|
|
}
|
|
return true
|
|
}
|
|
|
|
// True asserts that the specified value is true.
|
|
//
|
|
// assert.True(t, myBool, "myBool should be true")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
func True(t TestingT, value bool, msgAndArgs ...interface{}) bool {
|
|
|
|
if value != true {
|
|
return Fail(t, "Should be true", msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
// False asserts that the specified value is false.
|
|
//
|
|
// assert.False(t, myBool, "myBool should be false")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
func False(t TestingT, value bool, msgAndArgs ...interface{}) bool {
|
|
|
|
if value != false {
|
|
return Fail(t, "Should be false", msgAndArgs...)
|
|
}
|
|
|
|
return true
|
|
|
|
}
|
|
|
|
// NotEqual asserts that the specified values are NOT equal.
|
|
//
|
|
// assert.NotEqual(t, obj1, obj2, "two objects shouldn't be equal")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
func NotEqual(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
|
|
|
|
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", "But 'Hello World' does contain 'World'")
|
|
// assert.Contains(t, ["Hello", "World"], "World", "But ["Hello", "World"] does contain 'World'")
|
|
// assert.Contains(t, {"Hello": "World"}, "Hello", "But {'Hello': 'World'} does contain 'Hello'")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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", "But 'Hello World' does NOT contain 'Earth'")
|
|
// assert.NotContains(t, ["Hello", "World"], "Earth", "But ['Hello', 'World'] does NOT contain 'Earth'")
|
|
// assert.NotContains(t, {"Hello": "World"}, "Earth", "But {'Hello': 'World'} does NOT contain 'Earth'")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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
|
|
|
|
}
|
|
|
|
// 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()
|
|
// }, "Calling GoCrazy() should panic")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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
|
|
}
|
|
|
|
// NotPanics asserts that the code inside the specified PanicTestFunc does NOT panic.
|
|
//
|
|
// assert.NotPanics(t, func(){
|
|
// RemainCalm()
|
|
// }, "Calling RemainCalm() should NOT panic")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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, "The difference should not be more than 10s")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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)
|
|
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)
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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("Actual 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)
|
|
if !result {
|
|
return result
|
|
}
|
|
}
|
|
|
|
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("expected 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
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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)", actualEpsilon, epsilon), 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, actualObj, expectedObj)
|
|
// }
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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, "An error was expected") {
|
|
// assert.Equal(t, err, expectedError)
|
|
// }
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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, "An error was expected")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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"+
|
|
"received: %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")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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")
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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 and returns the truth.
|
|
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 and returns the truth.
|
|
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
|
|
}
|
|
|
|
// JSONEq asserts that two JSON strings are equivalent.
|
|
//
|
|
// assert.JSONEq(t, `{"hello": "world", "foo": "bar"}`, `{"foo": "bar", "hello": "world"}`)
|
|
//
|
|
// Returns whether the assertion was successful (true) or not (false).
|
|
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 := spew.Sdump(expected)
|
|
a := spew.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
|
|
}
|