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58 lines
1.3 KiB
Go
58 lines
1.3 KiB
Go
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// untested sections: 1
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package matchers
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import (
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"fmt"
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"reflect"
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"github.com/onsi/gomega/format"
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)
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type BeElementOfMatcher struct {
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Elements []interface{}
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}
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func (matcher *BeElementOfMatcher) Match(actual interface{}) (success bool, err error) {
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if reflect.TypeOf(actual) == nil {
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return false, fmt.Errorf("BeElement matcher expects actual to be typed")
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}
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length := len(matcher.Elements)
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valueAt := func(i int) interface{} {
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return matcher.Elements[i]
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}
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// Special handling of a single element of type Array or Slice
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if length == 1 && isArrayOrSlice(valueAt(0)) {
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element := valueAt(0)
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value := reflect.ValueOf(element)
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length = value.Len()
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valueAt = func(i int) interface{} {
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return value.Index(i).Interface()
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}
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}
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var lastError error
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for i := 0; i < length; i++ {
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matcher := &EqualMatcher{Expected: valueAt(i)}
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success, err := matcher.Match(actual)
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if err != nil {
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lastError = err
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continue
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}
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if success {
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return true, nil
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}
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}
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return false, lastError
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}
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func (matcher *BeElementOfMatcher) FailureMessage(actual interface{}) (message string) {
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return format.Message(actual, "to be an element of", matcher.Elements)
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}
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func (matcher *BeElementOfMatcher) NegatedFailureMessage(actual interface{}) (message string) {
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return format.Message(actual, "not to be an element of", matcher.Elements)
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}
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