37 lines
1.1 KiB
Go
37 lines
1.1 KiB
Go
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//go:build linux
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// +build linux
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package staros
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import (
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"testing"
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"time"
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)
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func TestCPUUsageOverDurationGuardsZeroOrNegativeWindow(t *testing.T) {
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if got := cpuUsageOverDuration(10, 0); got != 0 {
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t.Fatalf("expected zero-window cpu usage to clamp to 0, got %v", got)
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}
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if got := cpuUsageOverDuration(10, -time.Millisecond); got != 0 {
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t.Fatalf("expected negative-window cpu usage to clamp to 0, got %v", got)
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}
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if got := cpuUsageOverDuration(-1, time.Second); got != 0 {
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t.Fatalf("expected negative delta cpu usage to clamp to 0, got %v", got)
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}
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if got := cpuUsageOverDuration(0.5, time.Second); got != 50 {
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t.Fatalf("expected normal cpu usage calculation, got %v", got)
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}
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}
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func TestCPUUsagePercentGuardsInvalidSamples(t *testing.T) {
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if got := cpuUsagePercent(1, 0); got != 0 {
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t.Fatalf("expected zero total ticks to clamp to 0, got %v", got)
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}
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if got := cpuUsagePercent(-1, 4); got != 0 {
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t.Fatalf("expected negative busy ticks to clamp to 0, got %v", got)
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}
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if got := cpuUsagePercent(1, 4); got != 25 {
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t.Fatalf("expected normal cpu percent calculation, got %v", got)
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}
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}
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