github.com/m3db/m3@v1.5.0/src/m3ninx/search/proptest/util.go (about)

     1  // Copyright (c) 2018 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package proptest
    22  
    23  import (
    24  	"fmt"
    25  	"testing"
    26  
    27  	"github.com/stretchr/testify/require"
    28  
    29  	"github.com/m3db/m3/src/m3ninx/doc"
    30  	idxdocs "github.com/m3db/m3/src/m3ninx/index/segment/fst/encoding/docs"
    31  )
    32  
    33  type documentIteratorMatcher struct {
    34  	expectedDocs map[string]doc.Document
    35  	t            *testing.T
    36  }
    37  
    38  func newDocumentIteratorMatcher(t *testing.T, docs ...doc.Document) (*documentIteratorMatcher, error) {
    39  	docMap := make(map[string]doc.Document, len(docs))
    40  	for _, d := range docs {
    41  		rawID, err := idxdocs.ReadIDFromDocument(d)
    42  		id := string(rawID)
    43  		require.NoError(t, err)
    44  		if _, ok := docMap[id]; ok {
    45  			return nil, fmt.Errorf("received document with duplicate id: %v", d)
    46  		}
    47  		docMap[id] = d
    48  	}
    49  	return &documentIteratorMatcher{
    50  		expectedDocs: docMap,
    51  		t:            t,
    52  	}, nil
    53  }
    54  
    55  // Matches returns whether the provided iterator matches the collection of provided docs.
    56  func (m *documentIteratorMatcher) Matches(i doc.Iterator) error {
    57  	pendingDocIDs := make(map[string]doc.Document, len(m.expectedDocs))
    58  	for id := range m.expectedDocs {
    59  		pendingDocIDs[id] = m.expectedDocs[id]
    60  	}
    61  	for i.Next() {
    62  		d := i.Current()
    63  		rawID, err := idxdocs.ReadIDFromDocument(d)
    64  		require.NoError(m.t, err)
    65  		id := string(rawID)
    66  		expectedDoc, ok := m.expectedDocs[id]
    67  		if !ok {
    68  			return fmt.Errorf("received un-expected document: %+v", d)
    69  		}
    70  		if !m.compareDocs(expectedDoc, d) {
    71  			return fmt.Errorf("received document: %+v did not match expected doc %+v", d, expectedDoc)
    72  		}
    73  		delete(pendingDocIDs, id)
    74  	}
    75  	if err := i.Err(); err != nil {
    76  		return fmt.Errorf("unexpected iterator error: %v", err)
    77  	}
    78  	if err := i.Close(); err != nil {
    79  		return fmt.Errorf("unexpected iterator close error: %v", err)
    80  	}
    81  	if len(pendingDocIDs) > 0 {
    82  		return fmt.Errorf("did not receive docs: %+v", pendingDocIDs)
    83  	}
    84  	return nil
    85  }
    86  
    87  func (m *documentIteratorMatcher) compareDocs(d1 doc.Document, d2 doc.Document) bool {
    88  	docReader := idxdocs.NewEncodedDocumentReader()
    89  	d1Metadata, err := idxdocs.MetadataFromDocument(d1, docReader)
    90  	require.NoError(m.t, err)
    91  
    92  	d2Metadata, err := idxdocs.MetadataFromDocument(d2, docReader)
    93  	require.NoError(m.t, err)
    94  
    95  	return d1Metadata.Equal(d2Metadata)
    96  }