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pkg/kube/kubetest: Add
kubetest package
This commit adds the `kubetest` subpackage to the `kube` package. It contains a small set of helpers for setuping up kubernetes' `envtest.Environment`.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| package kubetest | ||
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| import ( | ||
| "os/exec" | ||
| "testing" | ||
| "time" | ||
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| "github.com/redpanda-data/helm-charts/pkg/kube" | ||
| "github.com/stretchr/testify/require" | ||
| "sigs.k8s.io/controller-runtime/pkg/envtest" | ||
| ) | ||
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| const controlPlaneVersion = "1.30.x" | ||
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| // NewEnv starts a local kubernetes control plane via [envtest.Environment] and | ||
| // returns a [kube.Ctl] to access it. The provided [testing.T] will be used to | ||
| // shutdown the control plane at the end of the test. | ||
| func NewEnv(t *testing.T) *kube.Ctl { | ||
| // TODO: Would be nice to instead just import setup-envtest but the package | ||
| // isn't exactly friendly to be used as a library. Alternatively, we could | ||
| // use nix to provide the etcd and kubeapi-server binaries as that's all | ||
| // setup-envtest does. | ||
| if _, err := exec.LookPath("setup-envtest"); err != nil { | ||
| t.Fatalf("setup-envtest not found in $PATH. Did you forget nix develop?") | ||
| } | ||
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| stdout, err := exec.Command("setup-envtest", "use", controlPlaneVersion, "-p", "path").CombinedOutput() | ||
| require.NoError(t, err) | ||
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| env := envtest.Environment{ | ||
| BinaryAssetsDirectory: string(stdout), | ||
| ControlPlaneStartTimeout: 30 * time.Second, | ||
| ControlPlaneStopTimeout: 30 * time.Second, | ||
| } | ||
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| cfg, err := env.Start() | ||
| require.NoError(t, err) | ||
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| t.Cleanup(func() { | ||
| require.NoError(t, env.Stop()) | ||
| }) | ||
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| ctl, err := kube.FromRESTConfig(cfg) | ||
| require.NoError(t, err) | ||
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| return ctl | ||
| } |