forked from cerc-io/ipld-eth-server
81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
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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"github.com/onsi/gomega/matchers/support/goraph/bipartitegraph"
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)
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type ConsistOfMatcher struct {
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Elements []interface{}
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}
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func (matcher *ConsistOfMatcher) Match(actual interface{}) (success bool, err error) {
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if !isArrayOrSlice(actual) && !isMap(actual) {
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return false, fmt.Errorf("ConsistOf matcher expects an array/slice/map. Got:\n%s", format.Object(actual, 1))
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}
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elements := matcher.Elements
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if len(matcher.Elements) == 1 && isArrayOrSlice(matcher.Elements[0]) {
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elements = []interface{}{}
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value := reflect.ValueOf(matcher.Elements[0])
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for i := 0; i < value.Len(); i++ {
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elements = append(elements, value.Index(i).Interface())
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}
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}
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matchers := []interface{}{}
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for _, element := range elements {
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matcher, isMatcher := element.(omegaMatcher)
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if !isMatcher {
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matcher = &EqualMatcher{Expected: element}
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}
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matchers = append(matchers, matcher)
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}
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values := matcher.valuesOf(actual)
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if len(values) != len(matchers) {
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return false, nil
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}
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neighbours := func(v, m interface{}) (bool, error) {
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match, err := m.(omegaMatcher).Match(v)
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return match && err == nil, nil
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}
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bipartiteGraph, err := bipartitegraph.NewBipartiteGraph(values, matchers, neighbours)
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if err != nil {
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return false, err
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}
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return len(bipartiteGraph.LargestMatching()) == len(values), nil
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}
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func (matcher *ConsistOfMatcher) valuesOf(actual interface{}) []interface{} {
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value := reflect.ValueOf(actual)
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values := []interface{}{}
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if isMap(actual) {
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keys := value.MapKeys()
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for i := 0; i < value.Len(); i++ {
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values = append(values, value.MapIndex(keys[i]).Interface())
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}
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} else {
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for i := 0; i < value.Len(); i++ {
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values = append(values, value.Index(i).Interface())
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}
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}
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return values
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}
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func (matcher *ConsistOfMatcher) FailureMessage(actual interface{}) (message string) {
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return format.Message(actual, "to consist of", matcher.Elements)
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}
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func (matcher *ConsistOfMatcher) NegatedFailureMessage(actual interface{}) (message string) {
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return format.Message(actual, "not to consist of", matcher.Elements)
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}
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