OCPBUGS-46422: Add test that the ServiceCIDR API is blocked [4.20]

test/extended/networking/servicecidr.go

@@ -0,0 +1,38 @@
+package networking
+
+import (
+	g "github.com/onsi/ginkgo/v2"
+	o "github.com/onsi/gomega"
+
+	exutil "github.com/openshift/origin/test/extended/util"
+)
+
+var _ = g.Describe("[sig-network] ServiceCIDR", func() {
+	oc := exutil.NewCLIWithoutNamespace("servicecidr")
+
+	g.BeforeEach(func() {
+		// The VAP is created by CNO, which doesn't run on MicroShift
+		isMicroshift, err := exutil.IsMicroShiftCluster(oc.AdminKubeClient())
+		o.Expect(err).NotTo(o.HaveOccurred())
+		if isMicroshift {
+			g.Skip("Feature is not currently blocked on Microshift")
+		}
+	})
+
+	g.It("should be blocked", func() {
+		g.By("Trying to create a new ServiceCIDR")
+		yaml := exutil.FixturePath("testdata", "servicecidr.yaml")
+		err := oc.AsAdmin().Run("create").Args("-f", yaml).Execute()
+		if err == nil {
+			// This shouldn't have worked! We'll fail below, but delete the
+			// ServiceCIDR first because otherwise it may cause spurious
+			// failures throughout the rest of the test run.
+			_ = oc.AsAdmin().Run("delete").Args("newcidr1").Execute()
+		}
+		o.Expect(err).To(o.HaveOccurred(), "Creating a ServiceCIDR should have been blocked by ValidatingAdmissionPolicy")
+
+		g.By("Trying to modify an existing ServiceCIDR")
+		err = oc.AsAdmin().Run("annotate").Args("servicecidr", "kubernetes", "e2etest=success").Execute()
+		o.Expect(err).To(o.HaveOccurred(), "Modifying existing ServiceCIDR should have been blocked by ValidatingAdmissionPolicy")
+	})
+})

test/extended/testdata/servicecidr.yaml

@@ -0,0 +1,7 @@
+apiVersion: networking.k8s.io/v1beta1
+kind: ServiceCIDR
+metadata:
+  name: newcidr1
+spec:
+  cidrs:
+  - 10.96.0.0/24