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util.go
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util.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 proptest
import (
"fmt"
"testing"
"github.com/stretchr/testify/require"
"github.com/m3db/m3/src/m3ninx/doc"
idxdocs "github.com/m3db/m3/src/m3ninx/index/segment/fst/encoding/docs"
)
type documentIteratorMatcher struct {
expectedDocs map[string]doc.Document
t *testing.T
}
func newDocumentIteratorMatcher(t *testing.T, docs ...doc.Document) (*documentIteratorMatcher, error) {
docMap := make(map[string]doc.Document, len(docs))
for _, d := range docs {
rawID, err := idxdocs.ReadIDFromDocument(d)
id := string(rawID)
require.NoError(t, err)
if _, ok := docMap[id]; ok {
return nil, fmt.Errorf("received document with duplicate id: %v", d)
}
docMap[id] = d
}
return &documentIteratorMatcher{
expectedDocs: docMap,
t: t,
}, nil
}
// Matches returns whether the provided iterator matches the collection of provided docs.
func (m *documentIteratorMatcher) Matches(i doc.Iterator) error {
pendingDocIDs := make(map[string]doc.Document, len(m.expectedDocs))
for id := range m.expectedDocs {
pendingDocIDs[id] = m.expectedDocs[id]
}
for i.Next() {
d := i.Current()
rawID, err := idxdocs.ReadIDFromDocument(d)
require.NoError(m.t, err)
id := string(rawID)
expectedDoc, ok := m.expectedDocs[id]
if !ok {
return fmt.Errorf("received un-expected document: %+v", d)
}
if !m.compareDocs(expectedDoc, d) {
return fmt.Errorf("received document: %+v did not match expected doc %+v", d, expectedDoc)
}
delete(pendingDocIDs, id)
}
if err := i.Err(); err != nil {
return fmt.Errorf("unexpected iterator error: %v", err)
}
if err := i.Close(); err != nil {
return fmt.Errorf("unexpected iterator close error: %v", err)
}
if len(pendingDocIDs) > 0 {
return fmt.Errorf("did not receive docs: %+v", pendingDocIDs)
}
return nil
}
func (m *documentIteratorMatcher) compareDocs(d1 doc.Document, d2 doc.Document) bool {
docReader := idxdocs.NewEncodedDocumentReader()
d1Metadata, err := idxdocs.MetadataFromDocument(d1, docReader)
require.NoError(m.t, err)
d2Metadata, err := idxdocs.MetadataFromDocument(d2, docReader)
require.NoError(m.t, err)
return d1Metadata.Equal(d2Metadata)
}