github.com/m3db/m3@v1.5.0/src/m3ninx/search/searcher/regexp_test.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 searcher
    22  
    23  import (
    24  	re "regexp"
    25  	"testing"
    26  
    27  	"github.com/m3db/m3/src/m3ninx/index"
    28  	"github.com/m3db/m3/src/m3ninx/postings"
    29  	"github.com/m3db/m3/src/m3ninx/postings/roaring"
    30  
    31  	"github.com/golang/mock/gomock"
    32  	"github.com/stretchr/testify/require"
    33  )
    34  
    35  func TestRegexpSearcher(t *testing.T) {
    36  	mockCtrl := gomock.NewController(t)
    37  	defer mockCtrl.Finish()
    38  
    39  	field, regexp := []byte("fruit"), []byte(".*pple")
    40  	compiled := index.CompiledRegex{
    41  		Simple: re.MustCompile(string(regexp)),
    42  	}
    43  
    44  	// First reader.
    45  	firstPL := roaring.NewPostingsList()
    46  	require.NoError(t, firstPL.Insert(postings.ID(42)))
    47  	require.NoError(t, firstPL.Insert(postings.ID(50)))
    48  	firstReader := index.NewMockReader(mockCtrl)
    49  
    50  	// Second reader.
    51  	secondPL := roaring.NewPostingsList()
    52  	require.NoError(t, secondPL.Insert(postings.ID(57)))
    53  	secondReader := index.NewMockReader(mockCtrl)
    54  
    55  	gomock.InOrder(
    56  		// Query the first reader.
    57  		firstReader.EXPECT().MatchRegexp(field, compiled).Return(firstPL, nil),
    58  
    59  		// Query the second reader.
    60  		secondReader.EXPECT().MatchRegexp(field, compiled).Return(secondPL, nil),
    61  	)
    62  
    63  	s := NewRegexpSearcher(field, compiled)
    64  
    65  	// Test the postings list from the first Reader.
    66  	pl, err := s.Search(firstReader)
    67  	require.NoError(t, err)
    68  	require.True(t, pl.Equal(firstPL))
    69  
    70  	// Test the postings list from the second Reader.
    71  	pl, err = s.Search(secondReader)
    72  	require.NoError(t, err)
    73  	require.True(t, pl.Equal(secondPL))
    74  }