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package matchers
import (
"fmt"
"reflect"
"github.com/onsi/gomega/format"
"github.com/onsi/gomega/matchers/support/goraph/bipartitegraph"
)
type ConsistOfMatcher struct {
Elements []interface{}
}
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 *ConsistOfMatcher) valuesOf(actual interface{}) []interface{} {
value := reflect.ValueOf(actual)
values := []interface{}{}
if isMap(actual) {
keys := value.MapKeys()
for i := 0; i < value.Len(); i++ {
values = append(values, value.MapIndex(keys[i]).Interface())
}
} else {
for i := 0; i < value.Len(); i++ {
values = append(values, value.Index(i).Interface())
}
}
return values
}
func (matcher *ConsistOfMatcher) FailureMessage(actual interface{}) (message string) {
return format.Message(actual, "to consist of", matcher.Elements)
}
func (matcher *ConsistOfMatcher) NegatedFailureMessage(actual interface{}) (message string) {
return format.Message(actual, "not to consist of", matcher.Elements)
}
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