github.com/m3db/m3@v1.5.0/src/metrics/transformation/binary_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 transformation
    22  
    23  import (
    24  	"math"
    25  	"testing"
    26  	"time"
    27  
    28  	"github.com/stretchr/testify/require"
    29  )
    30  
    31  func TestPerSecond(t *testing.T) {
    32  	inputs := []struct {
    33  		prev        Datapoint
    34  		curr        Datapoint
    35  		expectedNaN bool
    36  		expected    Datapoint
    37  	}{
    38  		{
    39  			prev:     Datapoint{TimeNanos: time.Unix(1230, 0).UnixNano(), Value: 25},
    40  			curr:     Datapoint{TimeNanos: time.Unix(1240, 0).UnixNano(), Value: 30},
    41  			expected: Datapoint{TimeNanos: time.Unix(1240, 0).UnixNano(), Value: 0.5},
    42  		},
    43  		{
    44  			prev:     Datapoint{TimeNanos: time.Unix(1230, 0).UnixNano(), Value: 25},
    45  			curr:     Datapoint{TimeNanos: time.Unix(1240, 0).UnixNano(), Value: 30},
    46  			expected: Datapoint{TimeNanos: time.Unix(1240, 0).UnixNano(), Value: 0.5},
    47  		},
    48  		{
    49  			prev:        Datapoint{TimeNanos: time.Unix(1230, 0).UnixNano(), Value: 25},
    50  			curr:        Datapoint{TimeNanos: time.Unix(1230, 0).UnixNano(), Value: 20},
    51  			expectedNaN: true,
    52  			expected:    emptyDatapoint,
    53  		},
    54  		{
    55  			prev:        Datapoint{TimeNanos: time.Unix(1230, 0).UnixNano(), Value: math.NaN()},
    56  			curr:        Datapoint{TimeNanos: time.Unix(1240, 0).UnixNano(), Value: 20},
    57  			expectedNaN: true,
    58  			expected:    emptyDatapoint,
    59  		},
    60  		{
    61  			prev:        Datapoint{TimeNanos: time.Unix(1230, 0).UnixNano(), Value: 20},
    62  			curr:        Datapoint{TimeNanos: time.Unix(1240, 0).UnixNano(), Value: math.NaN()},
    63  			expectedNaN: true,
    64  			expected:    emptyDatapoint,
    65  		},
    66  		{
    67  			prev:        Datapoint{TimeNanos: time.Unix(1230, 0).UnixNano(), Value: 30},
    68  			curr:        Datapoint{TimeNanos: time.Unix(1240, 0).UnixNano(), Value: 20},
    69  			expectedNaN: true,
    70  			expected:    emptyDatapoint,
    71  		},
    72  	}
    73  
    74  	for _, input := range inputs {
    75  		if input.expectedNaN {
    76  			require.True(t, perSecond(input.prev, input.curr, FeatureFlags{}).IsEmpty())
    77  		} else {
    78  			require.Equal(t, input.expected, perSecond(input.prev, input.curr, FeatureFlags{}))
    79  		}
    80  	}
    81  }