Golang format.Object函数代码示例

func (matcher *BeFalseMatcher) Match(actual interface{}) (success bool, err error) {
	if !isBool(actual) {
		return false, fmt.Errorf("Expected a boolean.  Got:\n%s", format.Object(actual, 1))
	}

	return actual == false, nil
}

func (matcher *MatchErrorMatcher) Match(actual interface{}) (success bool, err error) {
	if isNil(actual) {
		return false, fmt.Errorf("Expected an error, got nil")
	}

	if !isError(actual) {
		return false, fmt.Errorf("Expected an error.  Got:\n%s", format.Object(actual, 1))
	}

	actualErr := actual.(error)

	if isString(matcher.Expected) {
		return reflect.DeepEqual(actualErr.Error(), matcher.Expected), nil
	}

	if isError(matcher.Expected) {
		return reflect.DeepEqual(actualErr, matcher.Expected), nil
	}

	var subMatcher omegaMatcher
	var hasSubMatcher bool
	if matcher.Expected != nil {
		subMatcher, hasSubMatcher = (matcher.Expected).(omegaMatcher)
		if hasSubMatcher {
			return subMatcher.Match(actualErr.Error())
		}
	}

	return false, fmt.Errorf("MatchError must be passed an error, string, or Matcher that can match on strings.  Got:\n%s", format.Object(matcher.Expected, 1))
}

func (matcher *HaveKeyWithValueMatcher) Match(actual interface{}) (success bool, err error) {
	if !isMap(actual) {
		return false, fmt.Errorf("HaveKeyWithValue matcher expects a map.  Got:%s", format.Object(actual, 1))
	}

	keyMatcher, keyIsMatcher := matcher.Key.(omegaMatcher)
	if !keyIsMatcher {
		keyMatcher = &EqualMatcher{Expected: matcher.Key}
	}

	valueMatcher, valueIsMatcher := matcher.Value.(omegaMatcher)
	if !valueIsMatcher {
		valueMatcher = &EqualMatcher{Expected: matcher.Value}
	}

	keys := reflect.ValueOf(actual).MapKeys()
	for i := 0; i < len(keys); i++ {
		success, err := keyMatcher.Match(keys[i].Interface())
		if err != nil {
			return false, fmt.Errorf("HaveKeyWithValue's key matcher failed with:\n%s%s", format.Indent, err.Error())
		}
		if success {
			actualValue := reflect.ValueOf(actual).MapIndex(keys[i])
			success, err := valueMatcher.Match(actualValue.Interface())
			if err != nil {
				return false, fmt.Errorf("HaveKeyWithValue's value matcher failed with:\n%s%s", format.Indent, err.Error())
			}
			return success, nil
		}
	}

	return false, nil
}

func (matcher *BeClosedMatcher) Match(actual interface{}) (success bool, err error) {
	if !isChan(actual) {
		return false, fmt.Errorf("BeClosed matcher expects a channel.  Got:\n%s", format.Object(actual, 1))
	}

	channelType := reflect.TypeOf(actual)
	channelValue := reflect.ValueOf(actual)

	if channelType.ChanDir() == reflect.SendDir {
		return false, fmt.Errorf("BeClosed matcher cannot determine if a send-only channel is closed or open.  Got:\n%s", format.Object(actual, 1))
	}

	winnerIndex, _, open := reflect.Select([]reflect.SelectCase{
		reflect.SelectCase{Dir: reflect.SelectRecv, Chan: channelValue},
		reflect.SelectCase{Dir: reflect.SelectDefault},
	})

	var closed bool
	if winnerIndex == 0 {
		closed = !open
	} else if winnerIndex == 1 {
		closed = false
	}

	return closed, nil
}

func (matcher *BeNumericallyMatcher) Match(actual interface{}) (success bool, err error) {
	if len(matcher.CompareTo) == 0 || len(matcher.CompareTo) > 2 {
		return false, fmt.Errorf("BeNumerically requires 1 or 2 CompareTo arguments.  Got:\n%s", format.Object(matcher.CompareTo, 1))
	}
	if !isNumber(actual) {
		return false, fmt.Errorf("Expected a number.  Got:\n%s", format.Object(actual, 1))
	}
	if !isNumber(matcher.CompareTo[0]) {
		return false, fmt.Errorf("Expected a number.  Got:\n%s", format.Object(matcher.CompareTo[0], 1))
	}
	if len(matcher.CompareTo) == 2 && !isNumber(matcher.CompareTo[1]) {
		return false, fmt.Errorf("Expected a number.  Got:\n%s", format.Object(matcher.CompareTo[0], 1))
	}

	switch matcher.Comparator {
	case "==", "~", ">", ">=", "<", "<=":
	default:
		return false, fmt.Errorf("Unknown comparator: %s", matcher.Comparator)
	}

	if isFloat(actual) || isFloat(matcher.CompareTo[0]) {
		var secondOperand float64 = 1e-8
		if len(matcher.CompareTo) == 2 {
			secondOperand = toFloat(matcher.CompareTo[1])
		}
		success = matcher.matchFloats(toFloat(actual), toFloat(matcher.CompareTo[0]), secondOperand)
	} else if isInteger(actual) {
		var secondOperand int64 = 0
		if len(matcher.CompareTo) == 2 {
			secondOperand = toInteger(matcher.CompareTo[1])
		}
		success = matcher.matchIntegers(toInteger(actual), toInteger(matcher.CompareTo[0]), secondOperand)
	} else if isUnsignedInteger(actual) {
		var secondOperand uint64 = 0
		if len(matcher.CompareTo) == 2 {
			secondOperand = toUnsignedInteger(matcher.CompareTo[1])
		}
		success = matcher.matchUnsignedIntegers(toUnsignedInteger(actual), toUnsignedInteger(matcher.CompareTo[0]), secondOperand)
	} else {
		return false, fmt.Errorf("Failed to compare:\n%s\n%s:\n%s", format.Object(actual, 1), matcher.Comparator, format.Object(matcher.CompareTo[0], 1))
	}

	return success, nil
}

func (matcher *HaveOccurredMatcher) Match(actual interface{}) (success bool, err error) {
	if actual == nil {
		return false, nil
	}

	if isError(actual) {
		return true, nil
	}

	return false, fmt.Errorf("Expected an error.  Got:\n%s", format.Object(actual, 1))
}

func (matcher *MatchRegexpMatcher) Match(actual interface{}) (success bool, err error) {
	actualString, ok := toString(actual)
	if !ok {
		return false, fmt.Errorf("RegExp matcher requires a string or stringer.\nGot:%s", format.Object(actual, 1))
	}

	match, err := regexp.Match(matcher.regexp(), []byte(actualString))
	if err != nil {
		return false, fmt.Errorf("RegExp match failed to compile with error:\n\t%s", err.Error())
	}

	return match, nil
}

func (matcher *BeSentMatcher) Match(actual interface{}) (success bool, err error) {
	if !isChan(actual) {
		return false, fmt.Errorf("BeSent expects a channel.  Got:\n%s", format.Object(actual, 1))
	}

	channelType := reflect.TypeOf(actual)
	channelValue := reflect.ValueOf(actual)

	if channelType.ChanDir() == reflect.RecvDir {
		return false, fmt.Errorf("BeSent matcher cannot be passed a receive-only channel.  Got:\n%s", format.Object(actual, 1))
	}

	argType := reflect.TypeOf(matcher.Arg)
	assignable := argType.AssignableTo(channelType.Elem())

	if !assignable {
		return false, fmt.Errorf("Cannot pass:\n%s to the channel:\n%s\nThe types don't match.", format.Object(matcher.Arg, 1), format.Object(actual, 1))
	}

	argValue := reflect.ValueOf(matcher.Arg)

	defer func() {
		if e := recover(); e != nil {
			success = false
			err = fmt.Errorf("Cannot send to a closed channel")
			matcher.channelClosed = true
		}
	}()

	winnerIndex, _, _ := reflect.Select([]reflect.SelectCase{
		reflect.SelectCase{Dir: reflect.SelectSend, Chan: channelValue, Send: argValue},
		reflect.SelectCase{Dir: reflect.SelectDefault},
	})

	var didSend bool
	if winnerIndex == 0 {
		didSend = true
	}

	return didSend, nil
}

func (matcher *BeTemporallyMatcher) Match(actual interface{}) (bool, error) {
	// predicate to test for time.Time type
	isTime := func(t interface{}) bool {
		_, ok := t.(time.Time)
		return ok
	}

	if !isTime(actual) {
		return false, fmt.Errorf("Expected a time.Time.  Got:\n%s", format.Object(actual, 1))
	}

	switch matcher.Comparator {
	case "==", "~", ">", ">=", "<", "<=":
	default:
		return false, fmt.Errorf("Unknown comparator: %s", matcher.Comparator)
	}

	var threshold = time.Millisecond
	if len(matcher.Threshold) == 1 {
		threshold = matcher.Threshold[0]
	}

	return matcher.matchTimes(actual.(time.Time), matcher.CompareTo, threshold), nil
}

func (matcher *PanicMatcher) Match(actual interface{}) (success bool, err error) {
	if actual == nil {
		return false, fmt.Errorf("PanicMatcher expects a non-nil actual.")
	}

	actualType := reflect.TypeOf(actual)
	if actualType.Kind() != reflect.Func {
		return false, fmt.Errorf("PanicMatcher expects a function.  Got:\n%s", format.Object(actual, 1))
	}
	if !(actualType.NumIn() == 0 && actualType.NumOut() == 0) {
		return false, fmt.Errorf("PanicMatcher expects a function with no arguments and no return value.  Got:\n%s", format.Object(actual, 1))
	}

	success = false
	defer func() {
		if e := recover(); e != nil {
			success = true
		}
	}()

	reflect.ValueOf(actual).Call([]reflect.Value{})

	return
}

func (matcher *HaveSuffixMatcher) Match(actual interface{}) (success bool, err error) {
	actualString, ok := toString(actual)
	if !ok {
		return false, fmt.Errorf("HaveSuffix matcher requires a string or stringer.  Got:\n%s", format.Object(actual, 1))
	}
	suffix := matcher.suffix()
	return len(actualString) >= len(suffix) && actualString[len(actualString)-len(suffix):] == suffix, nil
}

func (matcher *MatchJSONMatcher) prettyPrint(actual interface{}) (actualFormatted, expectedFormatted string, err error) {
	actualString, aok := toString(actual)
	expectedString, eok := toString(matcher.JSONToMatch)

	if !(aok && eok) {
		return "", "", fmt.Errorf("MatchJSONMatcher matcher requires a string or stringer.  Got:\n%s", format.Object(actual, 1))
	}

	abuf := new(bytes.Buffer)
	ebuf := new(bytes.Buffer)

	if err := json.Indent(abuf, []byte(actualString), "", "  "); err != nil {
		return "", "", err
	}

	if err := json.Indent(ebuf, []byte(expectedString), "", "  "); err != nil {
		return "", "", err
	}

	return actualString, expectedString, nil
}

func (matcher *ContainElementMatcher) Match(actual interface{}) (success bool, err error) {
	if !isArrayOrSlice(actual) && !isMap(actual) {
		return false, fmt.Errorf("ContainElement matcher expects an array/slice/map.  Got:\n%s", format.Object(actual, 1))
	}

	elemMatcher, elementIsMatcher := matcher.Element.(omegaMatcher)
	if !elementIsMatcher {
		elemMatcher = &EqualMatcher{Expected: matcher.Element}
	}

	value := reflect.ValueOf(actual)
	var keys []reflect.Value
	if isMap(actual) {
		keys = value.MapKeys()
	}
	for i := 0; i < value.Len(); i++ {
		var success bool
		var err error
		if isMap(actual) {
			success, err = elemMatcher.Match(value.MapIndex(keys[i]).Interface())
		} else {
			success, err = elemMatcher.Match(value.Index(i).Interface())
		}
		if err != nil {
			return false, fmt.Errorf("ContainElement's element matcher failed with:\n\t%s", err.Error())
		}
		if success {
			return true, nil
		}
	}

	return false, nil
}

func (matcher *HaveOccurredMatcher) FailureMessage(actual interface{}) (message string) {
	return fmt.Sprintf("Expected an error to have occured.  Got:\n%s", format.Object(actual, 1))
}

func (matcher *HaveOccurredMatcher) NegatedFailureMessage(actual interface{}) (message string) {
	return fmt.Sprintf("Expected error:\n%s\n%s\n%s", format.Object(actual, 1), format.IndentString(actual.(error).Error(), 1), "not to have occurred")
}