deployment_test.go

func TestDeployTemplateRendersMetadata(t *testing.T) {
	t.Parallel()
	var (
		// Default Helm values
		// Work as values.yaml for tests purposes
		deployDefaultValues = map[string]string{
			"app.version":           "0.1.0",
			"app.replicas":          "2",
			"app.component":         "api",
			"app.env":               "dev",
			"app.owner":             "john.doe",
			"app.project":           "test",
			"app.bu":                "eng",
			"app.labels.foo":        "bar",
			"app.annotations.foo":   "bar",
			"containers.image":      "hashicorp/http-echo",
			"containers.port":       "5678",
			"containers.command[0]": "sleep",
			"containers.args[0]":    "infinity",
		}
		// The expected labels in Deployment and Pod metadata
		deployExpectedLabels = map[string]string{
			"app.kubernetes.io/name":       "my-api",
			"app.kubernetes.io/instance":   "my-api-0.1.0",
			"app.kubernetes.io/component":  "api",
			"app.kubernetes.io/version":    "0.1.0",
			"app.kubernetes.io/managed-by": "Helm",
			"env":                          "dev",
			"app":                          "my-api",
			"version":                      "0.1.0",
			"foo":                          "bar",
		}
	)

	helmChartPath := "../"

	// Passing values to helm chart.
	options := &helm.Options{
		SetValues: deployDefaultValues,
	}

	output := helm.RenderTemplate(t, options, helmChartPath, "my-api", []string{"templates/deployment.yaml"})

	// ensure the deployment resource is rendered correctly.
	var deployment appsv1.Deployment
	helm.UnmarshalK8SYaml(t, output, &deployment)

	assert.Equal(
		t,
		"my-api",
		deployment.Name,
		"Rendered Deployment name is not the expected!",
	)

	// Validate all Deployment labels
	for k, v := range deployExpectedLabels {
		assert.Equal(
			t,
			v,
			deployment.Labels[k],
			"Rendered Deployment '%s' label is not the expected!", k,
		)
	}
}