65 lines
1.3 KiB
Go
65 lines
1.3 KiB
Go
package memory
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import (
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"testing"
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"github.com/google/cadvisor/info"
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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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Cpu: info.CpuStats{
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Load: 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 expectElements(t *testing.T, sb *StatsBuffer, expected []int32) {
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res := sb.FirstN(sb.Size())
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if len(res) != len(expected) {
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t.Errorf("Expected elements %v, got %v", expected, res)
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return
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}
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for i, el := range res {
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if el.Cpu.Load != expected[i] {
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t.Errorf("Expected elements %v, got %v", expected, res)
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}
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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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expectElements(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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expectElements(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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expectElements(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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expectElements(t, sb, []int32{6, 7, 8, 9, 10})
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}
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