github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/cdc/metrics/metrics_test.go (about)

     1  // Copyright 2022 PingCAP, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package metrics
    15  
    16  import (
    17  	"testing"
    18  
    19  	"github.com/stretchr/testify/require"
    20  )
    21  
    22  func TestLagBucket(t *testing.T) {
    23  	buckets := LagBucket()
    24  	require.Equal(t, 64, len(buckets))
    25  	require.Equal(t, 0.5, buckets[0])
    26  	require.Equal(t, 1.0, buckets[1])
    27  	require.Equal(t, 21.0, buckets[30])
    28  	require.Equal(t, 900.0, buckets[50])
    29  	require.Equal(t, 4000.0, buckets[60])
    30  	require.Equal(t, float64(32000), buckets[63])
    31  }