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package matchers
import (
"fmt"
"reflect"
"github.com/onsi/gomega/format"
)
type HaveEachMatcher struct {
Element interface{}
}
func (matcher *HaveEachMatcher) Match(actual interface{}) (success bool, err error) {
if !isArrayOrSlice(actual) && !isMap(actual) {
return false, fmt.Errorf("HaveEach 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)
if value.Len() == 0 {
return false, fmt.Errorf("HaveEach matcher expects a non-empty array/slice/map. Got:\n%s",
format.Object(actual, 1))
}
var valueAt func(int) interface{}
if isMap(actual) {
keys := value.MapKeys()
valueAt = func(i int) interface{} {
return value.MapIndex(keys[i]).Interface()
}
} else {
valueAt = func(i int) interface{} {
return value.Index(i).Interface()
}
}
// if there are no elements, then HaveEach will match.
for i := 0; i < value.Len(); i++ {
success, err := elemMatcher.Match(valueAt(i))
if err != nil {
return false, err
}
if !success {
return false, nil
}
}
return true, nil
}
// FailureMessage returns a suitable failure message.
func (matcher *HaveEachMatcher) FailureMessage(actual interface{}) (message string) {
return format.Message(actual, "to contain element matching", matcher.Element)
}
// NegatedFailureMessage returns a suitable negated failure message.
func (matcher *HaveEachMatcher) NegatedFailureMessage(actual interface{}) (message string) {
return format.Message(actual, "not to contain element matching", matcher.Element)
}
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