From ade19a2b96c3730fa2638146fcb6f047bf011d66 Mon Sep 17 00:00:00 2001
From: Richard Wall <richard.wall@venafi.com>
Date: Tue, 25 Jun 2024 13:50:03 +0100
Subject: [PATCH] E2E test

Signed-off-by: Richard Wall <richard.wall@venafi.com>
---
 deploy/charts/csi-driver/values.yaml |  7 +++++-
 make/test-e2e.mk                     |  1 +
 test/e2e/suite/cases/metrics.go      | 34 ++++++++++++++++++++++++++++
 3 files changed, 41 insertions(+), 1 deletion(-)
 create mode 100644 test/e2e/suite/cases/metrics.go

diff --git a/deploy/charts/csi-driver/values.yaml b/deploy/charts/csi-driver/values.yaml
index 59a76da5..7c3e173d 100644
--- a/deploy/charts/csi-driver/values.yaml
+++ b/deploy/charts/csi-driver/values.yaml
@@ -1,3 +1,8 @@
+# metrics:
+#   enabled: false
+#   podMonitor:
+#     enabled: false
+
 image:
   # Target image registry. This value is prepended to the target image repository, if set.
   # For example:
@@ -130,7 +135,7 @@ nodeSelector:
   kubernetes.io/os: linux
 
 # Kubernetes affinity: constraints for pod assignment.
-# 
+#
 # For example:
 #  affinity:
 #    nodeAffinity:
diff --git a/make/test-e2e.mk b/make/test-e2e.mk
index 516eee18..00657c3e 100644
--- a/make/test-e2e.mk
+++ b/make/test-e2e.mk
@@ -46,6 +46,7 @@ endif
 
 test-e2e-deps: INSTALL_OPTIONS :=
 test-e2e-deps: INSTALL_OPTIONS += --set image.repository=$(oci_manager_image_name_development)
+# test-e2e-deps: INSTALL_OPTIONS += --set metrics.enabled=true
 test-e2e-deps: e2e-setup-cert-manager
 test-e2e-deps: install
 
diff --git a/test/e2e/suite/cases/metrics.go b/test/e2e/suite/cases/metrics.go
new file mode 100644
index 00000000..d5627afb
--- /dev/null
+++ b/test/e2e/suite/cases/metrics.go
@@ -0,0 +1,34 @@
+package cases
+
+import (
+	"context"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/cert-manager/csi-driver/test/e2e/framework"
+)
+
+const certManagerNamespace = "cert-manager"
+
+var _ = framework.CasesDescribe("Metrics", func() {
+	f := framework.NewDefaultFramework("metrics")
+
+	FIt("should serve metrics", func() {
+		pods, err := f.KubeClientSet.CoreV1().Pods(certManagerNamespace).List(context.TODO(), metav1.ListOptions{
+			LabelSelector: "app.kubernetes.io/instance=csi-driver",
+		})
+		Expect(err).NotTo(HaveOccurred())
+		Expect(pods.Items).To(HaveLen(1))
+		for _, p := range pods.Items {
+			resp, err := f.KubeClientSet.
+				CoreV1().
+				Pods(p.Namespace).
+				ProxyGet("http", p.Name, "8080", "/metrics", map[string]string{}).
+				DoRaw(context.TODO())
+			Expect(err).NotTo(HaveOccurred())
+			Expect(string(resp)).To(Equal("foo"))
+		}
+	})
+})