207 lines
7.0 KiB
Go
207 lines
7.0 KiB
Go
// Copyright 2014 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package memory
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import (
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"strconv"
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"strings"
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"testing"
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"time"
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"github.com/google/cadvisor/info"
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"github.com/stretchr/testify/assert"
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)
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func createTime(id int) time.Time {
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var zero time.Time
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return zero.Add(time.Duration(id+1) * time.Second)
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}
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func createStats(id int32) *info.ContainerStats {
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return &info.ContainerStats{
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Timestamp: createTime(int(id)),
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Cpu: info.CpuStats{
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LoadAverage: id,
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},
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}
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}
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func expectSize(t *testing.T, sb *StatsBuffer, expectedSize int) {
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if sb.Size() != expectedSize {
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t.Errorf("Expected size %v, got %v", expectedSize, sb.Size())
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}
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}
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func expectFirstN(t *testing.T, sb *StatsBuffer, expected []int32) {
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expectElements(t, sb.FirstN(sb.Size()), expected)
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}
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func expectElements(t *testing.T, actual []*info.ContainerStats, expected []int32) {
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if len(actual) != len(expected) {
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t.Errorf("Expected elements %v, got %v", expected, actual)
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return
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}
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for i, el := range actual {
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if el.Cpu.LoadAverage != expected[i] {
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actualElements := make([]string, len(actual))
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for i, element := range actual {
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actualElements[i] = strconv.Itoa(int(element.Cpu.LoadAverage))
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}
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t.Errorf("Expected elements %v, got %v", expected, strings.Join(actualElements, ","))
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return
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}
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}
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}
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func expectElement(t *testing.T, stat *info.ContainerStats, expected int32) {
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if stat.Cpu.LoadAverage != expected {
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t.Errorf("Expected %d, but received %d", expected, stat.Cpu.LoadAverage)
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}
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}
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func TestAddAndFirstN(t *testing.T) {
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sb := NewStatsBuffer(5)
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// Add 1.
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sb.Add(createStats(1))
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expectSize(t, sb, 1)
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expectFirstN(t, sb, []int32{1})
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// Fill the buffer.
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for i := 1; i <= 5; i++ {
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expectSize(t, sb, i)
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sb.Add(createStats(int32(i)))
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}
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expectSize(t, sb, 5)
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expectFirstN(t, sb, []int32{1, 2, 3, 4, 5})
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// Add more than is available in the buffer
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sb.Add(createStats(6))
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expectSize(t, sb, 5)
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expectFirstN(t, sb, []int32{2, 3, 4, 5, 6})
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// Replace all elements.
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for i := 7; i <= 10; i++ {
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sb.Add(createStats(int32(i)))
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}
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expectSize(t, sb, 5)
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expectFirstN(t, sb, []int32{6, 7, 8, 9, 10})
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}
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func TestGet(t *testing.T) {
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sb := NewStatsBuffer(5)
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sb.Add(createStats(1))
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sb.Add(createStats(2))
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sb.Add(createStats(3))
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expectSize(t, sb, 3)
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expectFirstN(t, sb, []int32{1, 2, 3})
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expectElement(t, sb.Get(0), 3)
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expectElement(t, sb.Get(1), 2)
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expectElement(t, sb.Get(2), 1)
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}
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func TestInTimeRange(t *testing.T) {
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sb := NewStatsBuffer(5)
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assert := assert.New(t)
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var empty time.Time
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// No elements.
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assert.Empty(sb.InTimeRange(createTime(0), createTime(5), 10))
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assert.Empty(sb.InTimeRange(createTime(0), empty, 10))
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assert.Empty(sb.InTimeRange(empty, createTime(5), 10))
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assert.Empty(sb.InTimeRange(empty, empty, 10))
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// One element.
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sb.Add(createStats(1))
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expectSize(t, sb, 1)
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expectElements(t, sb.InTimeRange(createTime(0), createTime(5), 10), []int32{1})
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expectElements(t, sb.InTimeRange(createTime(1), createTime(5), 10), []int32{1})
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expectElements(t, sb.InTimeRange(createTime(0), createTime(1), 10), []int32{1})
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expectElements(t, sb.InTimeRange(createTime(1), createTime(1), 10), []int32{1})
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assert.Empty(sb.InTimeRange(createTime(2), createTime(5), 10))
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// Two element.
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sb.Add(createStats(2))
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expectSize(t, sb, 2)
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expectElements(t, sb.InTimeRange(createTime(0), createTime(5), 10), []int32{1, 2})
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expectElements(t, sb.InTimeRange(createTime(1), createTime(5), 10), []int32{1, 2})
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expectElements(t, sb.InTimeRange(createTime(0), createTime(2), 10), []int32{1, 2})
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expectElements(t, sb.InTimeRange(createTime(1), createTime(2), 10), []int32{1, 2})
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expectElements(t, sb.InTimeRange(createTime(1), createTime(1), 10), []int32{1})
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expectElements(t, sb.InTimeRange(createTime(2), createTime(2), 10), []int32{2})
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assert.Empty(sb.InTimeRange(createTime(3), createTime(5), 10))
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// Many elements.
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sb.Add(createStats(3))
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sb.Add(createStats(4))
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expectSize(t, sb, 4)
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expectElements(t, sb.InTimeRange(createTime(0), createTime(5), 10), []int32{1, 2, 3, 4})
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expectElements(t, sb.InTimeRange(createTime(0), createTime(5), 10), []int32{1, 2, 3, 4})
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expectElements(t, sb.InTimeRange(createTime(1), createTime(5), 10), []int32{1, 2, 3, 4})
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expectElements(t, sb.InTimeRange(createTime(0), createTime(4), 10), []int32{1, 2, 3, 4})
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expectElements(t, sb.InTimeRange(createTime(1), createTime(4), 10), []int32{1, 2, 3, 4})
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expectElements(t, sb.InTimeRange(createTime(0), createTime(2), 10), []int32{1, 2})
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expectElements(t, sb.InTimeRange(createTime(1), createTime(2), 10), []int32{1, 2})
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expectElements(t, sb.InTimeRange(createTime(2), createTime(3), 10), []int32{2, 3})
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expectElements(t, sb.InTimeRange(createTime(3), createTime(4), 10), []int32{3, 4})
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expectElements(t, sb.InTimeRange(createTime(3), createTime(5), 10), []int32{3, 4})
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assert.Empty(sb.InTimeRange(createTime(5), createTime(5), 10))
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// No start time.
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expectElements(t, sb.InTimeRange(empty, createTime(5), 10), []int32{1, 2, 3, 4})
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expectElements(t, sb.InTimeRange(empty, createTime(4), 10), []int32{1, 2, 3, 4})
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expectElements(t, sb.InTimeRange(empty, createTime(3), 10), []int32{1, 2, 3})
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expectElements(t, sb.InTimeRange(empty, createTime(2), 10), []int32{1, 2})
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expectElements(t, sb.InTimeRange(empty, createTime(1), 10), []int32{1})
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// No end time.
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expectElements(t, sb.InTimeRange(createTime(0), empty, 10), []int32{1, 2, 3, 4})
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expectElements(t, sb.InTimeRange(createTime(1), empty, 10), []int32{1, 2, 3, 4})
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expectElements(t, sb.InTimeRange(createTime(2), empty, 10), []int32{2, 3, 4})
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expectElements(t, sb.InTimeRange(createTime(3), empty, 10), []int32{3, 4})
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expectElements(t, sb.InTimeRange(createTime(4), empty, 10), []int32{4})
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// No start or end time.
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expectElements(t, sb.InTimeRange(empty, empty, 10), []int32{1, 2, 3, 4})
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// Start after data.
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assert.Empty(sb.InTimeRange(createTime(5), createTime(5), 10))
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assert.Empty(sb.InTimeRange(createTime(5), empty, 10))
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// End before data.
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assert.Empty(sb.InTimeRange(createTime(0), createTime(0), 10))
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assert.Empty(sb.InTimeRange(empty, createTime(0), 10))
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}
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func TestInTimeRangeWithLimit(t *testing.T) {
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sb := NewStatsBuffer(5)
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sb.Add(createStats(1))
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sb.Add(createStats(2))
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sb.Add(createStats(3))
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sb.Add(createStats(4))
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expectSize(t, sb, 4)
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var empty time.Time
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// Limit cuts off from latest timestamp.
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expectElements(t, sb.InTimeRange(empty, empty, 4), []int32{1, 2, 3, 4})
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expectElements(t, sb.InTimeRange(empty, empty, 3), []int32{2, 3, 4})
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expectElements(t, sb.InTimeRange(empty, empty, 2), []int32{3, 4})
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expectElements(t, sb.InTimeRange(empty, empty, 1), []int32{4})
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assert.Empty(t, sb.InTimeRange(empty, empty, 0))
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}
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