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 *BeTrueMatcher) 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.(bool), nil
}
func (m *OneOfMatcher) expectedValues() string {
expectedValues := make([]string, len(m.Elements), len(m.Elements))
for i, matcher := range m.Elements {
expectedValues[i] = format.Object(matcher, 1)
}
return strings.Join(expectedValues, "\nor\n")
}
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 isNil(actual) {
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 *SucceedMatcher) Match(actual interface{}) (success bool, err error) {
if actual == nil {
return true, nil
}
if isError(actual) {
return false, nil
}
return false, fmt.Errorf("Expected an error-type. 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 (m *exitMatcher) Match(actual interface{}) (success bool, err error) {
exiter, ok := actual.(Exiter)
if !ok {
return false, fmt.Errorf("Exit must be passed a gexec.Exiter (Missing method ExitCode() int) Got:\n%s", format.Object(actual, 1))
}
m.actualExitCode = exiter.ExitCode()
if m.actualExitCode == -1 {
return false, nil
}
if m.exitCode == -1 {
return true, nil
}
return m.exitCode == m.actualExitCode, nil
}
func (matcher *ReceiveMatcher) Match(actual interface{}) (success bool, err error) {
if !isChan(actual) {
return false, fmt.Errorf("ReceiveMatcher 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("ReceiveMatcher matcher cannot be passed a send-only channel. Got:\n%s", format.Object(actual, 1))
}
var subMatcher omegaMatcher
var hasSubMatcher bool
if matcher.Arg != nil {
subMatcher, hasSubMatcher = (matcher.Arg).(omegaMatcher)
if !hasSubMatcher {
argType := reflect.TypeOf(matcher.Arg)
if argType.Kind() != reflect.Ptr {
return false, fmt.Errorf("Cannot assign a value from the channel:\n%s\nTo:\n%s\nYou need to pass a pointer!", format.Object(actual, 1), format.Object(matcher.Arg, 1))
}
assignable := channelType.Elem().AssignableTo(argType.Elem())
if !assignable {
return false, fmt.Errorf("Cannot assign a value from the channel:\n%s\nTo:\n%s", format.Object(actual, 1), format.Object(matcher.Arg, 1))
}
}
}
winnerIndex, value, open := reflect.Select([]reflect.SelectCase{
reflect.SelectCase{Dir: reflect.SelectRecv, Chan: channelValue},
reflect.SelectCase{Dir: reflect.SelectDefault},
})
var closed bool
var didReceive bool
if winnerIndex == 0 {
closed = !open
didReceive = open
}
matcher.channelClosed = closed
if closed {
return false, nil
}
if hasSubMatcher {
if didReceive {
matcher.receivedValue = value
return subMatcher.Match(matcher.receivedValue.Interface())
} else {
return false, nil
}
}
if didReceive {
if matcher.Arg != nil {
outValue := reflect.ValueOf(matcher.Arg)
reflect.Indirect(outValue).Set(value)
}
return true, nil
} else {
return false, nil
}
}
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 *ContainSubstringMatcher) Match(actual interface{}) (success bool, err error) {
actualString, ok := toString(actual)
if !ok {
return false, fmt.Errorf("ContainSubstring matcher requires a string or stringer. Got:\n%s", format.Object(actual, 1))
}
return strings.Contains(actualString, matcher.stringToMatch()), nil
}
func (matcher *BeEmptyMatcher) Match(actual interface{}) (success bool, err error) {
length, ok := lengthOf(actual)
if !ok {
return false, fmt.Errorf("BeEmpty matcher expects a string/array/map/channel/slice. Got:\n%s", format.Object(actual, 1))
}
return length == 0, nil
}
func (matcher *HaveLenMatcher) NegatedFailureMessage(actual interface{}) (message string) {
return fmt.Sprintf("Expected\n%s\nnot to have length %d", format.Object(actual, 1), matcher.Count)
}
func (matcher *ConsistOfMatcher) Match(actual interface{}) (success bool, err error) {
if !isArrayOrSlice(actual) && !isMap(actual) {
return false, fmt.Errorf("ConsistOf matcher expects an array/slice/map. Got:\n%s", format.Object(actual, 1))
}
elements := matcher.Elements
if len(matcher.Elements) == 1 && isArrayOrSlice(matcher.Elements[0]) {
elements = []interface{}{}
value := reflect.ValueOf(matcher.Elements[0])
for i := 0; i < value.Len(); i++ {
elements = append(elements, value.Index(i).Interface())
}
}
matchers := []interface{}{}
for _, element := range elements {
matcher, isMatcher := element.(omegaMatcher)
if !isMatcher {
matcher = &EqualMatcher{Expected: element}
}
matchers = append(matchers, matcher)
}
values := matcher.valuesOf(actual)
if len(values) != len(matchers) {
return false, nil
}
neighbours := func(v, m interface{}) (bool, error) {
match, err := m.(omegaMatcher).Match(v)
return match && err == nil, nil
}
bipartiteGraph, err := bipartitegraph.NewBipartiteGraph(values, matchers, neighbours)
if err != nil {
return false, err
}
return len(bipartiteGraph.LargestMatching()) == len(values), nil
}
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")
}
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 *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 abuf.String(), ebuf.String(), nil
}
func (m *OneOfMatcher) NegatedFailureMessage(actual interface{}) (message string) {
return fmt.Sprintf("Expected\n%s\n%s\n%s", format.Object(actual, 1), "not to match one of", m.expectedValues())
}
func (matcher *SucceedMatcher) FailureMessage(actual interface{}) (message string) {
return fmt.Sprintf("Expected success, but got an error:\n%s\n%s", format.Object(actual, 1), format.IndentString(actual.(error).Error(), 1))
}
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()
}
var lastError error
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 {
lastError = err
continue
}
if success {
return true, nil
}
}
return false, lastError
}