github.com/m3db/m3@v1.5.0/src/metrics/aggregation/id_compress_test.go (about)

     1  // Copyright (c) 2017 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 aggregation
    22  
    23  import (
    24  	"testing"
    25  
    26  	"github.com/m3db/m3/src/x/pool"
    27  
    28  	"github.com/stretchr/testify/require"
    29  )
    30  
    31  func TestIDCompressRoundTrip(t *testing.T) {
    32  	testcases := []struct {
    33  		input     Types
    34  		result    Types
    35  		expectErr bool
    36  	}{
    37  		{DefaultTypes, DefaultTypes, false},
    38  		{[]Type{UnknownType}, DefaultTypes, true},
    39  		{[]Type{Min, Max}, []Type{Min, Max}, false},
    40  		{[]Type{Last}, []Type{Last}, false},
    41  		{[]Type{P999, P9999}, []Type{P999, P9999}, false},
    42  		{[]Type{1, 5, 9, 3, 2}, []Type{1, 2, 3, 5, 9}, false},
    43  		// 50 is an unknown aggregation type.
    44  		{[]Type{10, 50}, DefaultTypes, true},
    45  	}
    46  
    47  	p := NewTypesPool(pool.NewObjectPoolOptions().SetSize(1))
    48  	p.Init(func() Types {
    49  		return make(Types, 0, maxTypeID)
    50  	})
    51  	compressor, decompressor := NewIDCompressor(), NewPooledIDDecompressor(p)
    52  	for _, test := range testcases {
    53  		codes, err := compressor.Compress(test.input)
    54  		if test.expectErr {
    55  			require.Error(t, err)
    56  			continue
    57  		}
    58  		res, err := decompressor.Decompress(codes)
    59  		require.NoError(t, err)
    60  		require.Equal(t, test.result, res)
    61  	}
    62  }
    63  
    64  func TestIDDecompressError(t *testing.T) {
    65  	compressor, decompressor := NewIDCompressor(), NewIDDecompressor()
    66  	_, err := decompressor.Decompress([IDLen]uint64{1})
    67  	require.Error(t, err)
    68  
    69  	max, err := compressor.Compress(
    70  		[]Type{Last, Min, Max, Mean, Median, Count, Sum, SumSq, Stdev, P95, P99, P999, P9999, P25, P75})
    71  	require.NoError(t, err)
    72  
    73  	max[0] = max[0] << 1
    74  	_, err = decompressor.Decompress(max)
    75  	require.Error(t, err)
    76  }
    77  
    78  func TestIDMustDecompress(t *testing.T) {
    79  	compressor, decompressor := NewIDCompressor(), NewIDDecompressor()
    80  	inputs := []struct {
    81  		id          ID
    82  		shouldPanic bool
    83  	}{
    84  		{
    85  			id:          compressor.MustCompress([]Type{Last, Min, Max, Mean, Median, Count, Sum, SumSq}),
    86  			shouldPanic: false,
    87  		},
    88  		{
    89  			id:          [IDLen]uint64{1},
    90  			shouldPanic: true,
    91  		},
    92  	}
    93  
    94  	for _, input := range inputs {
    95  		if input.shouldPanic {
    96  			require.Panics(t, func() { decompressor.MustDecompress(input.id) })
    97  		} else {
    98  			require.NotPanics(t, func() { decompressor.MustDecompress(input.id) })
    99  		}
   100  	}
   101  
   102  }