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tag_iterator_matcher.go
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/
tag_iterator_matcher.go
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// Copyright (c) 2018 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package ident
import (
"fmt"
"github.com/golang/mock/gomock"
)
// TagIterMatcher is a gomock.Matcher that matches TagIterator
type TagIterMatcher interface {
gomock.Matcher
}
// NewTagIterMatcher returns a new TagIterMatcher
func NewTagIterMatcher(iter TagIterator) TagIterMatcher {
return &tagIterMatcher{iter: iter}
}
type tagIterMatcher struct {
iter TagIterator
}
func (m *tagIterMatcher) Matches(x interface{}) bool {
t, ok := x.(TagIterator)
if !ok {
return false
}
// duplicate to ensure the both iterators can be re-used again
obs := t.Duplicate()
exp := m.iter.Duplicate()
for exp.Next() {
if !obs.Next() {
return false
}
obsCurrent := obs.Current()
expCurrent := exp.Current()
if !expCurrent.Equal(obsCurrent) {
return false
}
}
if obs.Next() {
return false
}
if exp.Err() != obs.Err() {
return false
}
return true
}
func (m *tagIterMatcher) String() string {
return fmt.Sprintf("tagIter %v", m.iter)
}