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Merge pull request #65907 from jbartosik/hpa-improv-refactor-run-test
Automatic merge from submit-queue (batch tested with PRs 64681, 65907). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Make runTest easier to understand Fewer nested conditions, more checking for incorrect looking test cases. **What this PR does / why we need it**: Make HPA tests easier to understand. **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: **Special notes for your reviewer**: **Release note**: ```release-note NONE ```
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1e3d23c5c3
@ -56,11 +56,21 @@ type resourceInfo struct {
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expectedValue int64
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}
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type metricType int
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const (
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objectMetric metricType = iota
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externalMetric
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externalPerPodMetric
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podMetric
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)
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type metricInfo struct {
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name string
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levels []int64
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singleObject *autoscalingv2.CrossVersionObjectReference
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selector *metav1.LabelSelector
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metricType metricType
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targetUtilization int64
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perPodTargetUtilization int64
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@ -332,34 +342,50 @@ func (tc *replicaCalcTestCase) runTest(t *testing.T) {
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assert.Equal(t, tc.resource.expectedUtilization, outUtilization, "utilization should be as expected")
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assert.Equal(t, tc.resource.expectedValue, outRawValue, "raw value should be as expected")
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assert.True(t, tc.timestamp.Equal(outTimestamp), "timestamp should be as expected")
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} else {
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var outReplicas int32
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var outUtilization int64
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var outTimestamp time.Time
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var err error
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if tc.metric.singleObject != nil {
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outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetObjectMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, tc.metric.singleObject, selector)
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} else if tc.metric.selector != nil {
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if tc.metric.targetUtilization > 0 {
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outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetExternalMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, tc.metric.selector, selector)
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} else if tc.metric.perPodTargetUtilization > 0 {
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outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetExternalPerPodMetricReplicas(tc.currentReplicas, tc.metric.perPodTargetUtilization, tc.metric.name, testNamespace, tc.metric.selector)
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}
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} else {
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outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, selector)
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}
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if tc.expectedError != nil {
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require.Error(t, err, "there should be an error calculating the replica count")
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assert.Contains(t, err.Error(), tc.expectedError.Error(), "the error message should have contained the expected error message")
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return
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}
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require.NoError(t, err, "there should not have been an error calculating the replica count")
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assert.Equal(t, tc.expectedReplicas, outReplicas, "replicas should be as expected")
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assert.Equal(t, tc.metric.expectedUtilization, outUtilization, "utilization should be as expected")
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assert.True(t, tc.timestamp.Equal(outTimestamp), "timestamp should be as expected")
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return
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}
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var outReplicas int32
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var outUtilization int64
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var outTimestamp time.Time
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switch tc.metric.metricType {
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case objectMetric:
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if tc.metric.singleObject == nil {
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t.Fatal("Metric specified as objectMetric but metric.singleObject is nil.")
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}
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outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetObjectMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, tc.metric.singleObject, selector)
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case externalMetric:
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if tc.metric.selector == nil {
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t.Fatal("Metric specified as externalMetric but metric.selector is nil.")
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}
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if tc.metric.targetUtilization <= 0 {
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t.Fatalf("Metric specified as externalMetric but metric.targetUtilization is %d which is <=0.", tc.metric.targetUtilization)
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}
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outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetExternalMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, tc.metric.selector, selector)
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case externalPerPodMetric:
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if tc.metric.selector == nil {
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t.Fatal("Metric specified as externalPerPodMetric but metric.selector is nil.")
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}
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if tc.metric.perPodTargetUtilization <= 0 {
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t.Fatalf("Metric specified as externalPerPodMetric but metric.perPodTargetUtilization is %d which is <=0.", tc.metric.perPodTargetUtilization)
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}
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outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetExternalPerPodMetricReplicas(tc.currentReplicas, tc.metric.perPodTargetUtilization, tc.metric.name, testNamespace, tc.metric.selector)
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case podMetric:
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outReplicas, outUtilization, outTimestamp, err = replicaCalc.GetMetricReplicas(tc.currentReplicas, tc.metric.targetUtilization, tc.metric.name, testNamespace, selector)
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default:
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t.Fatalf("Unknown metric type: %d", tc.metric.metricType)
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}
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if tc.expectedError != nil {
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require.Error(t, err, "there should be an error calculating the replica count")
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assert.Contains(t, err.Error(), tc.expectedError.Error(), "the error message should have contained the expected error message")
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return
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}
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require.NoError(t, err, "there should not have been an error calculating the replica count")
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assert.Equal(t, tc.expectedReplicas, outReplicas, "replicas should be as expected")
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assert.Equal(t, tc.metric.expectedUtilization, outUtilization, "utilization should be as expected")
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assert.True(t, tc.timestamp.Equal(outTimestamp), "timestamp should be as expected")
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}
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func TestReplicaCalcDisjointResourcesMetrics(t *testing.T) {
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@ -459,6 +485,7 @@ func TestReplicaCalcScaleUpCM(t *testing.T) {
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levels: []int64{20000, 10000, 30000},
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targetUtilization: 15000,
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expectedUtilization: 20000,
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metricType: podMetric,
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},
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}
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tc.runTest(t)
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@ -474,6 +501,7 @@ func TestReplicaCalcScaleUpCMUnreadyLessScale(t *testing.T) {
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levels: []int64{50000, 10000, 30000},
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targetUtilization: 15000,
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expectedUtilization: 30000,
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metricType: podMetric,
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},
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}
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tc.runTest(t)
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@ -489,6 +517,7 @@ func TestReplicaCalcScaleUpCMUnreadyNoScaleWouldScaleDown(t *testing.T) {
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levels: []int64{50000, 15000, 30000},
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targetUtilization: 15000,
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expectedUtilization: 15000,
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metricType: podMetric,
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},
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}
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tc.runTest(t)
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@ -543,6 +572,7 @@ func TestReplicaCalcScaleUpCMExternal(t *testing.T) {
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targetUtilization: 4400,
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expectedUtilization: 8600,
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selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
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metricType: podMetric,
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},
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}
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tc.runTest(t)
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@ -559,6 +589,7 @@ func TestReplicaCalcScaleUpCMExternalIgnoresUnreadyPods(t *testing.T) {
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targetUtilization: 4400,
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expectedUtilization: 8600,
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selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
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metricType: externalMetric,
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},
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}
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tc.runTest(t)
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@ -573,6 +604,7 @@ func TestReplicaCalcScaleUpCMExternalNoLabels(t *testing.T) {
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levels: []int64{8600},
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targetUtilization: 4400,
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expectedUtilization: 8600,
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metricType: podMetric,
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},
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}
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tc.runTest(t)
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@ -588,6 +620,7 @@ func TestReplicaCalcScaleUpPerPodCMExternal(t *testing.T) {
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perPodTargetUtilization: 2150,
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expectedUtilization: 2867,
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selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
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metricType: externalPerPodMetric,
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},
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}
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tc.runTest(t)
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@ -619,6 +652,7 @@ func TestReplicaCalcScaleDownCM(t *testing.T) {
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levels: []int64{12000, 12000, 12000, 12000, 12000},
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targetUtilization: 20000,
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expectedUtilization: 12000,
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metricType: podMetric,
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},
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}
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tc.runTest(t)
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@ -653,6 +687,7 @@ func TestReplicaCalcScaleDownCMExternal(t *testing.T) {
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targetUtilization: 14334,
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expectedUtilization: 8600,
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selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
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metricType: externalMetric,
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},
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}
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tc.runTest(t)
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@ -668,6 +703,7 @@ func TestReplicaCalcScaleDownPerPodCMExternal(t *testing.T) {
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perPodTargetUtilization: 2867,
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expectedUtilization: 1720,
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selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
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metricType: externalPerPodMetric,
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},
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}
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tc.runTest(t)
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@ -736,6 +772,7 @@ func TestReplicaCalcToleranceCM(t *testing.T) {
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levels: []int64{20000, 21000, 21000},
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targetUtilization: 20000,
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expectedUtilization: 20666,
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metricType: podMetric,
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},
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}
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tc.runTest(t)
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@ -770,6 +807,7 @@ func TestReplicaCalcToleranceCMExternal(t *testing.T) {
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targetUtilization: 8888,
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expectedUtilization: 8600,
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selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
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metricType: externalMetric,
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},
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}
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tc.runTest(t)
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@ -785,6 +823,7 @@ func TestReplicaCalcTolerancePerPodCMExternal(t *testing.T) {
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perPodTargetUtilization: 2900,
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expectedUtilization: 2867,
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selector: &metav1.LabelSelector{MatchLabels: map[string]string{"label": "value"}},
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metricType: externalPerPodMetric,
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},
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}
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tc.runTest(t)
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