71 lines
2 KiB
Go
71 lines
2 KiB
Go
|
// Copyright 2011 Aaron Jacobs. All Rights Reserved.
|
||
|
|
// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
package oglematchers
|
||
|
|
|
||
|
|
import (
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
// AllOf accepts a set of matchers S and returns a matcher that follows the
|
||
|
|
// algorithm below when considering a candidate c:
|
||
|
|
//
|
||
|
|
// 1. Return true if for every Matcher m in S, m matches c.
|
||
|
|
//
|
||
|
|
// 2. Otherwise, if there is a matcher m in S such that m returns a fatal
|
||
|
|
// error for c, return that matcher's error message.
|
||
|
|
//
|
||
|
|
// 3. Otherwise, return false with the error from some wrapped matcher.
|
||
|
|
//
|
||
|
|
// This is akin to a logical AND operation for matchers.
|
||
|
|
func AllOf(matchers ...Matcher) Matcher {
|
||
|
|
return &allOfMatcher{matchers}
|
||
|
|
}
|
||
|
|
|
||
|
|
type allOfMatcher struct {
|
||
|
|
wrappedMatchers []Matcher
|
||
|
|
}
|
||
|
|
|
||
|
|
func (m *allOfMatcher) Description() string {
|
||
|
|
// Special case: the empty set.
|
||
|
|
if len(m.wrappedMatchers) == 0 {
|
||
|
|
return "is anything"
|
||
|
|
}
|
||
|
|
|
||
|
|
// Join the descriptions for the wrapped matchers.
|
||
|
|
wrappedDescs := make([]string, len(m.wrappedMatchers))
|
||
|
|
for i, wrappedMatcher := range m.wrappedMatchers {
|
||
|
|
wrappedDescs[i] = wrappedMatcher.Description()
|
||
|
|
}
|
||
|
|
|
||
|
|
return strings.Join(wrappedDescs, ", and ")
|
||
|
|
}
|
||
|
|
|
||
|
|
func (m *allOfMatcher) Matches(c interface{}) (err error) {
|
||
|
|
for _, wrappedMatcher := range m.wrappedMatchers {
|
||
|
|
if wrappedErr := wrappedMatcher.Matches(c); wrappedErr != nil {
|
||
|
|
err = wrappedErr
|
||
|
|
|
||
|
|
// If the error is fatal, return immediately with this error.
|
||
|
|
_, ok := wrappedErr.(*FatalError)
|
||
|
|
if ok {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return
|
||
|
|
}
|