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Testing GetPodLogs before implementation
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--- | ||
apiVersion: apps/v1 | ||
kind: DaemonSet | ||
metadata: | ||
name: podinfo-deamonset | ||
spec: | ||
selector: | ||
matchLabels: | ||
app: podinfo | ||
template: | ||
metadata: | ||
labels: | ||
app: podinfo | ||
spec: | ||
containers: | ||
- name: podinfo | ||
image: ghcr.io/stefanprodan/podinfo:6.3.0 | ||
ports: | ||
- containerPort: 9898 |
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//go:build kubeall || kubernetes | ||
// +build kubeall kubernetes | ||
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// NOTE: we have build tags to differentiate kubernetes tests from non-kubernetes tests. This is done because minikube | ||
// is heavy and can interfere with docker related tests in terratest. Specifically, many of the tests start to fail with | ||
// `connection refused` errors from `minikube`. To avoid overloading the system, we run the kubernetes tests and helm | ||
// tests separately from the others. This may not be necessary if you have a sufficiently powerful machine. We | ||
// recommend at least 4 cores and 16GB of RAM if you want to run all the tests together. | ||
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package test | ||
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import ( | ||
"path/filepath" | ||
"strings" | ||
"testing" | ||
"time" | ||
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"github.com/stretchr/testify/require" | ||
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"github.com/gruntwork-io/terratest/modules/k8s" | ||
"github.com/gruntwork-io/terratest/modules/random" | ||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
) | ||
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// An example of how to do more expanded verification of the Kubernetes resource config in examples/kubernetes-basic-example using Terratest. | ||
func TestKubernetesBasicExampleServiceCheck(t *testing.T) { | ||
t.Parallel() | ||
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// Path to the Kubernetes resource config we will test | ||
kubeResourcePath, err := filepath.Abs("../examples/kubernetes-basic-example/podinfo-daemonset.yml") | ||
require.NoError(t, err) | ||
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// To ensure we can reuse the resource config on the same cluster to test different scenarios, we setup a unique | ||
// namespace for the resources for this test. | ||
// Note that namespaces must be lowercase. | ||
namespaceName := strings.ToLower(random.UniqueId()) | ||
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// Setup the kubectl config and context. Here we choose to use the defaults, which is: | ||
// - HOME/.kube/config for the kubectl config file | ||
// - Current context of the kubectl config file | ||
options := k8s.NewKubectlOptions("", "", namespaceName) | ||
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k8s.CreateNamespace(t, options, namespaceName) | ||
// ... and make sure to delete the namespace at the end of the test | ||
defer k8s.DeleteNamespace(t, options, namespaceName) | ||
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// At the end of the test, run `kubectl delete -f RESOURCE_CONFIG` to clean up any resources that were created. | ||
defer k8s.KubectlDelete(t, options, kubeResourcePath) | ||
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// This will run `kubectl apply -f RESOURCE_CONFIG` and fail the test if there are any errors | ||
k8s.KubectlApply(t, options, kubeResourcePath) | ||
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// Wait for at least 1 Pod to be ready from the DaemonSet | ||
retries := 10 | ||
sleep := time.Second * 1 | ||
for i := 1; i < retries; i++ { | ||
podsReady := k8s.GetDaemonSet(t, options, "podinfo-deamonset").Status.NumberReady | ||
if podsReady > 0 { | ||
break | ||
} | ||
time.Sleep(sleep) | ||
} | ||
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// listOptions are used to select the pods with label app=podinfo | ||
listOptions := new(metav1.ListOptions) | ||
listOptions.LabelSelector = "app=podinfo" | ||
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// Get a list of Pods. The pods are not guaranteed to be in running state. | ||
pods := k8s.ListPods(t, options, *listOptions) | ||
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// Check that we did not timeout waiting for the Pod of the DaemonSet to be ready | ||
require.Greater(t, len(pods), 0) | ||
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pod := pods[0] | ||
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// Wait fot the pod to be started and ready | ||
k8s.WaitUntilPodAvailable(t, options, pod.Name, 5, 10*time.Second) | ||
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logs := k8s.GetPodLogs(t, options, &pod) | ||
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require.Contains(t, logs, "Starting podinfo") | ||
} |