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-rw-r--r--Godeps/_workspace/src/github.com/stretchr/testify/assert/assertions.go853
1 files changed, 853 insertions, 0 deletions
diff --git a/Godeps/_workspace/src/github.com/stretchr/testify/assert/assertions.go b/Godeps/_workspace/src/github.com/stretchr/testify/assert/assertions.go
new file mode 100644
index 000000000..818cd7b0e
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/stretchr/testify/assert/assertions.go
@@ -0,0 +1,853 @@
+package assert
+
+import (
+ "bufio"
+ "bytes"
+ "fmt"
+ "math"
+ "reflect"
+ "regexp"
+ "runtime"
+ "strings"
+ "time"
+)
+
+// TestingT is an interface wrapper around *testing.T
+type TestingT interface {
+ Errorf(format string, args ...interface{})
+}
+
+// Comparison a custom function that returns true on success and false on failure
+type Comparison func() (success bool)
+
+/*
+ Helper functions
+*/
+
+// ObjectsAreEqual determines if two objects are considered equal.
+//
+// This function does no assertion of any kind.
+func ObjectsAreEqual(expected, actual interface{}) bool {
+
+ if expected == nil || actual == nil {
+ return expected == actual
+ }
+
+ if reflect.DeepEqual(expected, actual) {
+ return true
+ }
+
+ return false
+
+}
+
+// ObjectsAreEqualValues gets whether two objects are equal, or if their
+// values are equal.
+func ObjectsAreEqualValues(expected, actual interface{}) bool {
+ if ObjectsAreEqual(expected, actual) {
+ return true
+ }
+
+ actualType := reflect.TypeOf(actual)
+ expectedValue := reflect.ValueOf(expected)
+ if expectedValue.Type().ConvertibleTo(actualType) {
+ // Attempt comparison after type conversion
+ if reflect.DeepEqual(actual, expectedValue.Convert(actualType).Interface()) {
+ return true
+ }
+ }
+
+ return false
+}
+
+/* CallerInfo is necessary because the assert functions use the testing object
+internally, causing it to print the file:line of the assert method, rather than where
+the problem actually occured in calling code.*/
+
+// CallerInfo returns a string containing the file and line number of the assert call
+// that failed.
+func CallerInfo() string {
+
+ file := ""
+ line := 0
+ ok := false
+
+ for i := 0; ; i++ {
+ _, file, line, ok = runtime.Caller(i)
+ if !ok {
+ return ""
+ }
+ parts := strings.Split(file, "/")
+ dir := parts[len(parts)-2]
+ file = parts[len(parts)-1]
+ if (dir != "assert" && dir != "mock" && dir != "require") || file == "mock_test.go" {
+ break
+ }
+ }
+
+ return fmt.Sprintf("%s:%d", file, line)
+}
+
+// getWhitespaceString returns a string that is long enough to overwrite the default
+// output from the go testing framework.
+func getWhitespaceString() string {
+
+ _, file, line, ok := runtime.Caller(1)
+ if !ok {
+ return ""
+ }
+ parts := strings.Split(file, "/")
+ file = parts[len(parts)-1]
+
+ return strings.Repeat(" ", len(fmt.Sprintf("%s:%d: ", file, line)))
+
+}
+
+func messageFromMsgAndArgs(msgAndArgs ...interface{}) string {
+ if len(msgAndArgs) == 0 || msgAndArgs == nil {
+ return ""
+ }
+ if len(msgAndArgs) == 1 {
+ return msgAndArgs[0].(string)
+ }
+ if len(msgAndArgs) > 1 {
+ return fmt.Sprintf(msgAndArgs[0].(string), msgAndArgs[1:]...)
+ }
+ return ""
+}
+
+// Indents all lines of the message by appending a number of tabs to each line, in an output format compatible with Go's
+// test printing (see inner comment for specifics)
+func indentMessageLines(message string, tabs int) string {
+ outBuf := new(bytes.Buffer)
+
+ for i, scanner := 0, bufio.NewScanner(strings.NewReader(message)); scanner.Scan(); i++ {
+ if i != 0 {
+ outBuf.WriteRune('\n')
+ }
+ for ii := 0; ii < tabs; ii++ {
+ outBuf.WriteRune('\t')
+ // Bizarrely, all lines except the first need one fewer tabs prepended, so deliberately advance the counter
+ // by 1 prematurely.
+ if ii == 0 && i > 0 {
+ ii++
+ }
+ }
+ outBuf.WriteString(scanner.Text())
+ }
+
+ return outBuf.String()
+}
+
+// Fail reports a failure through
+func Fail(t TestingT, failureMessage string, msgAndArgs ...interface{}) bool {
+
+ message := messageFromMsgAndArgs(msgAndArgs...)
+
+ if len(message) > 0 {
+ t.Errorf("\r%s\r\tLocation:\t%s\n"+
+ "\r\tError:%s\n"+
+ "\r\tMessages:\t%s\n\r",
+ getWhitespaceString(),
+ CallerInfo(),
+ indentMessageLines(failureMessage, 2),
+ message)
+ } else {
+ t.Errorf("\r%s\r\tLocation:\t%s\n"+
+ "\r\tError:%s\n\r",
+ getWhitespaceString(),
+ CallerInfo(),
+ indentMessageLines(failureMessage, 2))
+ }
+
+ return false
+}
+
+// Implements asserts that an object is implemented by the specified interface.
+//
+// assert.Implements(t, (*MyInterface)(nil), new(MyObject), "MyObject")
+func Implements(t TestingT, interfaceObject interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+
+ interfaceType := reflect.TypeOf(interfaceObject).Elem()
+
+ if !reflect.TypeOf(object).Implements(interfaceType) {
+ return Fail(t, fmt.Sprintf("Object must implement %v", interfaceType), msgAndArgs...)
+ }
+
+ return true
+
+}
+
+// IsType asserts that the specified objects are of the same type.
+func IsType(t TestingT, expectedType interface{}, object interface{}, msgAndArgs ...interface{}) bool {
+
+ if !ObjectsAreEqual(reflect.TypeOf(object), reflect.TypeOf(expectedType)) {
+ return Fail(t, fmt.Sprintf("Object expected to be of type %v, but was %v", reflect.TypeOf(expectedType), reflect.TypeOf(object)), msgAndArgs...)
+ }
+
+ return true
+}
+
+// Equal asserts that two objects are equal.
+//
+// assert.Equal(t, 123, 123, "123 and 123 should be equal")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Equal(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+
+ if !ObjectsAreEqual(expected, actual) {
+ return Fail(t, fmt.Sprintf("Not equal: %#v (expected)\n"+
+ " != %#v (actual)", expected, actual), msgAndArgs...)
+ }
+
+ return true
+
+}
+
+// EqualValues asserts that two objects are equal or convertable to the same types
+// and equal.
+//
+// assert.EqualValues(t, uint32(123), int32(123), "123 and 123 should be equal")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func EqualValues(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+
+ if !ObjectsAreEqualValues(expected, actual) {
+ return Fail(t, fmt.Sprintf("Not equal: %#v (expected)\n"+
+ " != %#v (actual)", expected, actual), msgAndArgs...)
+ }
+
+ return true
+
+}
+
+// Exactly asserts that two objects are equal is value and type.
+//
+// assert.Exactly(t, int32(123), int64(123), "123 and 123 should NOT be equal")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Exactly(t TestingT, expected, actual interface{}, msgAndArgs ...interface{}) bool {
+
+ aType := reflect.TypeOf(expected)
+ bType := reflect.TypeOf(actual)
+
+ if aType != bType {
+ return Fail(t, "Types expected to match exactly", "%v != %v", aType, bType)
+ }
+
+ return Equal(t, expected, actual, msgAndArgs...)
+
+}
+
+// NotNil asserts that the specified object is not nil.
+//
+// assert.NotNil(t, err, "err should be something")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func NotNil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+
+ success := true
+
+ if object == nil {
+ success = false
+ } else {
+ value := reflect.ValueOf(object)
+ kind := value.Kind()
+ if kind >= reflect.Chan && kind <= reflect.Slice && value.IsNil() {
+ success = false
+ }
+ }
+
+ if !success {
+ Fail(t, "Expected not to be nil.", msgAndArgs...)
+ }
+
+ return success
+}
+
+// isNil checks if a specified object is nil or not, without Failing.
+func isNil(object interface{}) bool {
+ if object == nil {
+ return true
+ }
+
+ value := reflect.ValueOf(object)
+ kind := value.Kind()
+ if kind >= reflect.Chan && kind <= reflect.Slice && value.IsNil() {
+ return true
+ }
+
+ return false
+}
+
+// Nil asserts that the specified object is nil.
+//
+// assert.Nil(t, err, "err should be nothing")
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Nil(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+ if isNil(object) {
+ return true
+ }
+ return Fail(t, fmt.Sprintf("Expected nil, but got: %#v", object), msgAndArgs...)
+}
+
+var zeros = []interface{}{
+ int(0),
+ int8(0),
+ int16(0),
+ int32(0),
+ int64(0),
+ uint(0),
+ uint8(0),
+ uint16(0),
+ uint32(0),
+ uint64(0),
+ float32(0),
+ float64(0),
+}
+
+// isEmpty gets whether the specified object is considered empty or not.
+func isEmpty(object interface{}) bool {
+
+ if object == nil {
+ return true
+ } else if object == "" {
+ return true
+ } else if object == false {
+ return true
+ }
+
+ for _, v := range zeros {
+ if object == v {
+ return true
+ }
+ }
+
+ objValue := reflect.ValueOf(object)
+
+ switch objValue.Kind() {
+ case reflect.Map:
+ fallthrough
+ case reflect.Slice, reflect.Chan:
+ {
+ return (objValue.Len() == 0)
+ }
+ case reflect.Ptr:
+ {
+ switch object.(type) {
+ case *time.Time:
+ return object.(*time.Time).IsZero()
+ default:
+ return false
+ }
+ }
+ }
+ return false
+}
+
+// Empty asserts that the specified object is empty. I.e. nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+// assert.Empty(t, obj)
+//
+// Returns whether the assertion was successful (true) or not (false).
+func Empty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+
+ pass := isEmpty(object)
+ if !pass {
+ Fail(t, fmt.Sprintf("Should be empty, but was %v", object), msgAndArgs...)
+ }
+
+ return pass
+
+}
+
+// NotEmpty asserts that the specified object is NOT empty. I.e. not nil, "", false, 0 or either
+// a slice or a channel with len == 0.
+//
+// if assert.NotEmpty(t, obj) {
+// assert.Equal(t, "two", obj[1])
+// }
+//
+// Returns whether the assertion was successful (true) or not (false).
+func NotEmpty(t TestingT, object interface{}, msgAndArgs ...interface{}) bool {
+
+ pass := !isEmpty(object)
+ if !pass {
+ 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 true.
+//
+// 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, "Should not be equal", 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())
+ }
+
+ 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 or list(array, slice...) 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'")
+//
+// 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 or list(array, slice...) 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'")
+//
+// 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
+}
+
+// min(|expected|, |actual|) * epsilon
+func calcEpsilonDelta(expected, actual interface{}, epsilon float64) float64 {
+ af, aok := toFloat(expected)
+ bf, bok := toFloat(actual)
+
+ if !aok || !bok {
+ // invalid input
+ return 0
+ }
+
+ if af < 0 {
+ af = -af
+ }
+ if bf < 0 {
+ bf = -bf
+ }
+ var delta float64
+ if af < bf {
+ delta = af * epsilon
+ } else {
+ delta = bf * epsilon
+ }
+ return delta
+}
+
+// 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 {
+ delta := calcEpsilonDelta(expected, actual, epsilon)
+
+ return InDelta(t, expected, actual, delta, msgAndArgs...)
+}
+
+// InEpsilonSlice is the same as InEpsilon, except it compares two slices.
+func InEpsilonSlice(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 := InEpsilon(t, actualSlice.Index(i).Interface(), expectedSlice.Index(i).Interface(), delta)
+ 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 isNil(err) {
+ return true
+ }
+
+ return Fail(t, fmt.Sprintf("No error is expected but got %v", err), msgAndArgs...)
+}
+
+// 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 {
+
+ message := messageFromMsgAndArgs(msgAndArgs...)
+ return NotNil(t, err, "An error is expected but got nil. %s", message)
+
+}
+
+// EqualError asserts that a function returned an error (i.e. not `nil`)
+// and that it is equal to the provided error.
+//
+// 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 EqualError(t TestingT, theError error, errString string, msgAndArgs ...interface{}) bool {
+
+ message := messageFromMsgAndArgs(msgAndArgs...)
+ if !NotNil(t, theError, "An error is expected but got nil. %s", message) {
+ return false
+ }
+ s := "An error with value \"%s\" is expected but got \"%s\". %s"
+ return Equal(t, theError.Error(), errString,
+ s, errString, theError.Error(), message)
+}
+
+// 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
+
+}