test: add OpenShift 3 with YAML deployment

Use a KinD cluster pinned to Kubernetes version 1.11.10. This allows us to simulate an OpenShift 3 environment.

Author: ivanstanev

package.json

@@ -10,6 +10,7 @@
     "test:integration": "DEPLOYMENT_TYPE=YAML TEST_PLATFORM=kind CREATE_CLUSTER=true tap test/integration/kubernetes.test.ts --timeout=900",
     "test:integration:kind": "DEPLOYMENT_TYPE=YAML TEST_PLATFORM=kind CREATE_CLUSTER=true tap test/integration/kubernetes.test.ts --timeout=900",
     "test:integration:eks": "DEPLOYMENT_TYPE=YAML TEST_PLATFORM=eks CREATE_CLUSTER=false tap test/integration/kubernetes.test.ts --timeout=900",
+    "test:integration:openshift3": "DEPLOYMENT_TYPE=YAML TEST_PLATFORM=openshift3 CREATE_CLUSTER=true tap test/integration/kubernetes.test.ts --timeout=900",
     "test:integration:openshift4": "DEPLOYMENT_TYPE=Operator TEST_PLATFORM=openshift4 CREATE_CLUSTER=false tap test/integration/kubernetes.test.ts --timeout=900",
     "test:coverage": "npm run test:unit -- --coverage",
     "test:watch": "tsc-watch --onSuccess 'npm run test:unit'",

test/setup/platforms/index.ts

@@ -35,6 +35,16 @@ const eksSetup: IPlatformSetup = {
   setupTester: eks.setupTester,
 };
 
+// Use a kind cluster pinned to a specific Kubernetes version to mimic OS3.
+const openshift3Setup: IPlatformSetup = {
+  create: kind.createCluster,
+  loadImage: kind.loadImageInCluster,
+  delete: kind.deleteCluster,
+  config: kind.exportKubeConfig,
+  clean: kind.clean,
+  setupTester: kind.setupTester,
+};
+
 const openshift4Setup: IPlatformSetup = {
   create: openshift4.createCluster,
   loadImage: openshift4.returnUnchangedImageNameAndTag,
@@ -45,11 +55,17 @@ const openshift4Setup: IPlatformSetup = {
 };
 
 export function getKubernetesVersionForPlatform(testPlatform: string): string {
-  return 'latest';
+  switch (testPlatform) {
+    case 'openshift3':
+      return 'v1.11.10';
+    default:
+      return 'latest';
+  }
 }
 
 export default {
   kind: kindSetup,
   eks: eksSetup,
+  openshift3: openshift3Setup,
   openshift4: openshift4Setup,
 };