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test: make agent and systemd fixtures portable (#2461)

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user01010111
2026-09-29 11:19:02 +13:00
committed by GitHub
parent be3dad7ed4
commit 62f8a39c8a
7 changed files with 251 additions and 183 deletions
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44
internal/entities/systemd/systemd_test.go
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@@ -3,7 +3,9 @@
package systemd_test
import (
"runtime"
"testing"
"testing/synctest"
"time"
"github.com/henrygd/beszel/internal/entities/systemd"
@@ -65,30 +67,36 @@ func TestServiceUpdateCPUPercent(t *testing.T) {
})
t.Run("subsequent call calculates CPU percentage", func(t *testing.T) {
service := &systemd.Service{}
service.PrevCpuUsage = 1000
service.PrevReadTime = time.Now().Add(-time.Second)
synctest.Test(t, func(t *testing.T) {
service := &systemd.Service{}
service.PrevCpuUsage = 1000
service.PrevReadTime = time.Now().Add(-time.Second)
service.UpdateCPUPercent(8000000000) // 8 seconds of CPU time
// Half of one second's CPU capacity across all cores.
cpuUsage := service.PrevCpuUsage + uint64(time.Second/2)*uint64(runtime.NumCPU())
service.UpdateCPUPercent(cpuUsage)
// CPU usage should be positive and reasonable
assert.Greater(t, service.Cpu, 0.0, "CPU usage should be positive")
assert.LessOrEqual(t, service.Cpu, 100.0, "CPU usage should not exceed 100%")
assert.Equal(t, uint64(8000000000), service.PrevCpuUsage)
assert.Greater(t, service.CpuPeak, 0.0, "CPU peak should be set")
assert.Equal(t, 50.0, service.Cpu)
assert.Equal(t, cpuUsage, service.PrevCpuUsage)
assert.Equal(t, time.Now(), service.PrevReadTime)
assert.Equal(t, 50.0, service.CpuPeak)
})
})
t.Run("CPU peak updates only when higher", func(t *testing.T) {
service := &systemd.Service{}
service.PrevCpuUsage = 1000
service.PrevReadTime = time.Now().Add(-time.Second)
service.UpdateCPUPercent(8000000000) // Set initial peak to ~50%
initialPeak := service.CpuPeak
synctest.Test(t, func(t *testing.T) {
service := &systemd.Service{}
service.PrevCpuUsage = 1000
service.PrevReadTime = time.Now().Add(-time.Second)
service.UpdateCPUPercent(service.PrevCpuUsage + uint64(time.Second/2)*uint64(runtime.NumCPU()))
assert.Equal(t, 50.0, service.CpuPeak)
// Now try with much lower CPU usage - should not update peak
service.PrevReadTime = time.Now().Add(-time.Second)
service.UpdateCPUPercent(1000000) // Much lower usage
assert.Equal(t, initialPeak, service.CpuPeak, "Peak should not update for lower CPU usage")
// A smaller increase in the cumulative counter gives 25% usage.
service.PrevReadTime = time.Now().Add(-time.Second)
service.UpdateCPUPercent(service.PrevCpuUsage + uint64(time.Second/4)*uint64(runtime.NumCPU()))
assert.Equal(t, 25.0, service.Cpu)
assert.Equal(t, 50.0, service.CpuPeak, "Peak should not update for lower CPU usage")
})
})
t.Run("handles zero duration", func(t *testing.T) {