90 lines
2.4 KiB
Go
90 lines
2.4 KiB
Go
package client
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import (
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"testing"
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"time"
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"github.com/hashicorp/nomad/nomad/structs"
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)
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func testPolicy(success bool, mode string) *structs.RestartPolicy {
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return &structs.RestartPolicy{
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Interval: 2 * time.Minute,
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Delay: 1 * time.Second,
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Attempts: 3,
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Mode: mode,
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}
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}
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// withinJitter is a helper that returns whether the returned delay is within
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// the jitter.
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func withinJitter(expected, actual time.Duration) bool {
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return float64((actual.Nanoseconds()-expected.Nanoseconds())/
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expected.Nanoseconds()) <= jitter
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}
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func TestClient_RestartTracker_ModeDelay(t *testing.T) {
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t.Parallel()
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p := testPolicy(true, structs.RestartPolicyModeDelay)
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rt := newRestartTracker(p, structs.JobTypeService)
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for i := 0; i < p.Attempts; i++ {
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actual, when := rt.NextRestart(127)
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if !actual {
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t.Fatalf("NextRestart() returned %v, want %v", actual, true)
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}
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if !withinJitter(p.Delay, when) {
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t.Fatalf("NextRestart() returned %v; want %v+jitter", when, p.Delay)
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}
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}
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// Follow up restarts should cause delay.
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for i := 0; i < 3; i++ {
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actual, when := rt.NextRestart(127)
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if !actual {
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t.Fail()
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}
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if !(when > p.Delay && when <= p.Interval) {
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t.Fatalf("NextRestart() returned %v; want > %v and <= %v", when, p.Delay, p.Interval)
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}
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}
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}
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func TestClient_RestartTracker_ModeFail(t *testing.T) {
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t.Parallel()
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p := testPolicy(true, structs.RestartPolicyModeFail)
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rt := newRestartTracker(p, structs.JobTypeSystem)
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for i := 0; i < p.Attempts; i++ {
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actual, when := rt.NextRestart(127)
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if !actual {
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t.Fatalf("NextRestart() returned %v, want %v", actual, true)
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}
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if !withinJitter(p.Delay, when) {
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t.Fatalf("NextRestart() returned %v; want %v+jitter", when, p.Delay)
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}
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}
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// Next restart should cause fail
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if actual, _ := rt.NextRestart(127); actual {
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t.Fail()
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}
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}
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func TestClient_RestartTracker_NoRestartOnSuccess(t *testing.T) {
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t.Parallel()
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p := testPolicy(false, structs.RestartPolicyModeDelay)
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rt := newRestartTracker(p, structs.JobTypeBatch)
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if shouldRestart, _ := rt.NextRestart(0); shouldRestart {
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t.Fatalf("NextRestart() returned %v, expected: %v", shouldRestart, false)
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}
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}
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func TestClient_RestartTracker_ZeroAttempts(t *testing.T) {
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t.Parallel()
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p := testPolicy(true, structs.RestartPolicyModeFail)
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p.Attempts = 0
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rt := newRestartTracker(p, structs.JobTypeService)
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if actual, when := rt.NextRestart(1); actual {
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t.Fatalf("expect no restart, got restart/delay: %v", when)
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}
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}
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