github.com/m3db/m3@v1.5.0/src/m3ninx/search/searcher/disjunction_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  	"testing"
    25  
    26  	"github.com/m3db/m3/src/m3ninx/index"
    27  	"github.com/m3db/m3/src/m3ninx/postings"
    28  	"github.com/m3db/m3/src/m3ninx/postings/roaring"
    29  	"github.com/m3db/m3/src/m3ninx/search"
    30  
    31  	"github.com/golang/mock/gomock"
    32  	"github.com/stretchr/testify/require"
    33  )
    34  
    35  func TestDisjunctionSearcher(t *testing.T) {
    36  	mockCtrl := gomock.NewController(t)
    37  	defer mockCtrl.Finish()
    38  
    39  	firstReader := index.NewMockReader(mockCtrl)
    40  	secondReader := index.NewMockReader(mockCtrl)
    41  
    42  	// First searcher.
    43  	firstPL1 := roaring.NewPostingsList()
    44  	require.NoError(t, firstPL1.Insert(postings.ID(42)))
    45  	require.NoError(t, firstPL1.Insert(postings.ID(50)))
    46  	firstPL2 := roaring.NewPostingsList()
    47  	require.NoError(t, firstPL2.Insert(postings.ID(64)))
    48  	firstSearcher := search.NewMockSearcher(mockCtrl)
    49  
    50  	// Second searcher.
    51  	secondPL1 := roaring.NewPostingsList()
    52  	require.NoError(t, secondPL1.Insert(postings.ID(53)))
    53  	secondPL2 := roaring.NewPostingsList()
    54  	require.NoError(t, secondPL2.Insert(postings.ID(64)))
    55  	require.NoError(t, secondPL2.Insert(postings.ID(72)))
    56  	secondSearcher := search.NewMockSearcher(mockCtrl)
    57  
    58  	// Third searcher.
    59  	thirdPL1 := roaring.NewPostingsList()
    60  	require.NoError(t, thirdPL1.Insert(postings.ID(53)))
    61  	thirdPL2 := roaring.NewPostingsList()
    62  	require.NoError(t, thirdPL2.Insert(postings.ID(72)))
    63  	require.NoError(t, thirdPL2.Insert(postings.ID(89)))
    64  	thirdSearcher := search.NewMockSearcher(mockCtrl)
    65  
    66  	gomock.InOrder(
    67  		// Get the postings lists for the first Reader.
    68  		firstSearcher.EXPECT().Search(firstReader).Return(firstPL1, nil),
    69  		secondSearcher.EXPECT().Search(firstReader).Return(secondPL1, nil),
    70  		thirdSearcher.EXPECT().Search(firstReader).Return(thirdPL1, nil),
    71  
    72  		// Get the postings lists for the second Reader.
    73  		firstSearcher.EXPECT().Search(secondReader).Return(firstPL2, nil),
    74  		secondSearcher.EXPECT().Search(secondReader).Return(secondPL2, nil),
    75  		thirdSearcher.EXPECT().Search(secondReader).Return(thirdPL2, nil),
    76  	)
    77  
    78  	searchers := []search.Searcher{firstSearcher, secondSearcher, thirdSearcher}
    79  
    80  	s, err := NewDisjunctionSearcher(searchers)
    81  	require.NoError(t, err)
    82  
    83  	// Test the postings list from the first Reader.
    84  	expected := firstPL1.CloneAsMutable()
    85  	require.NoError(t, expected.UnionInPlace(secondPL1))
    86  	require.NoError(t, expected.UnionInPlace(thirdPL1))
    87  	pl, err := s.Search(firstReader)
    88  	require.NoError(t, err)
    89  	require.True(t, pl.Equal(expected))
    90  
    91  	// Test the postings list from the second Reader.
    92  	expected = firstPL2.CloneAsMutable()
    93  	require.NoError(t, expected.UnionInPlace(secondPL2))
    94  	require.NoError(t, expected.UnionInPlace(thirdPL2))
    95  	pl, err = s.Search(secondReader)
    96  	require.NoError(t, err)
    97  	require.True(t, pl.Equal(expected))
    98  }
    99  
   100  func TestDisjunctionSearcherError(t *testing.T) {
   101  	tests := []struct {
   102  		name       string
   103  		numReaders int
   104  		searchers  search.Searchers
   105  	}{
   106  		{
   107  			name:       "empty list of searchers",
   108  			numReaders: 3,
   109  		},
   110  	}
   111  
   112  	for _, test := range tests {
   113  		t.Run(test.name, func(t *testing.T) {
   114  			_, err := NewDisjunctionSearcher(test.searchers)
   115  			require.Error(t, err)
   116  		})
   117  	}
   118  }