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Merge pull request #718 from vmware-tanzu/workaround_for_flaky_unit_test

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TestAgentController unit test is flaky, try to add workaround
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Ryan Richard 2021-07-15 14:17:11 -07:00 committed by GitHub
commit be7bf9c193
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1 changed files with 27 additions and 11 deletions
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38
internal/controller/kubecertagent/kubecertagent_test.go
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@ -207,16 +207,17 @@ func TestAgentController(t *testing.T) {
}
tests := []struct {
name string
discoveryURLOverride *string
pinnipedObjects []runtime.Object
kubeObjects []runtime.Object
addKubeReactions func(*kubefake.Clientset)
mocks func(*testing.T, *mocks.MockPodCommandExecutorMockRecorder, *mocks.MockDynamicCertPrivateMockRecorder, *cache.Expiring)
wantDistinctErrors []string
wantDistinctLogs []string
wantAgentDeployment *appsv1.Deployment
wantStrategy *configv1alpha1.CredentialIssuerStrategy
name string
discoveryURLOverride *string
pinnipedObjects []runtime.Object
kubeObjects []runtime.Object
addKubeReactions func(*kubefake.Clientset)
mocks func(*testing.T, *mocks.MockPodCommandExecutorMockRecorder, *mocks.MockDynamicCertPrivateMockRecorder, *cache.Expiring)
wantDistinctErrors []string
alsoAllowUndesiredDistinctErrors []string
wantDistinctLogs []string
wantAgentDeployment *appsv1.Deployment
wantStrategy *configv1alpha1.CredentialIssuerStrategy
}{
{
name: "no CredentialIssuer found",
@ -351,6 +352,10 @@ func TestAgentController(t *testing.T) {
wantDistinctErrors: []string{
"could not find a healthy agent pod (1 candidate)",
},
alsoAllowUndesiredDistinctErrors: []string{
// due to the high amount of nondeterminism in this test, this error will sometimes also happen, but is not required to happen
`could not ensure agent deployment: deployments.apps "pinniped-concierge-kube-cert-agent" already exists`,
},
wantDistinctLogs: []string{
`kube-cert-agent-controller "level"=0 "msg"="creating new deployment" "deployment"={"name":"pinniped-concierge-kube-cert-agent","namespace":"concierge"} "templatePod"={"name":"kube-controller-manager-1","namespace":"kube-system"}`,
},
@ -395,6 +400,10 @@ func TestAgentController(t *testing.T) {
wantDistinctErrors: []string{
"could not find a healthy agent pod (1 candidate)",
},
alsoAllowUndesiredDistinctErrors: []string{
// due to the high amount of nondeterminism in this test, this error will sometimes also happen, but is not required to happen
`could not ensure agent deployment: deployments.apps "pinniped-concierge-kube-cert-agent" already exists`,
},
wantDistinctLogs: []string{
`kube-cert-agent-controller "level"=0 "msg"="creating new deployment" "deployment"={"name":"pinniped-concierge-kube-cert-agent","namespace":"concierge"} "templatePod"={"name":"kube-controller-manager-1","namespace":"kube-system"}`,
},
@ -756,7 +765,14 @@ func TestAgentController(t *testing.T) {
defer cancel()
errorMessages := runControllerUntilQuiet(ctx, t, controller, kubeInformers, conciergeInformers)
assert.Equal(t, tt.wantDistinctErrors, deduplicate(errorMessages), "unexpected errors")
actualErrors := deduplicate(errorMessages)
require.Subsetf(t, actualErrors, tt.wantDistinctErrors, "required error(s) were not found in the actual errors")
allAllowedErrors := append([]string{}, tt.wantDistinctErrors...)
allAllowedErrors = append(allAllowedErrors, tt.alsoAllowUndesiredDistinctErrors...)
require.Subsetf(t, allAllowedErrors, actualErrors, "actual errors contained additional error(s) which is not expected by the test")
assert.Equal(t, tt.wantDistinctLogs, deduplicate(log.Lines()), "unexpected logs")
// Assert that the agent deployment is in the expected final state.