feat(redshift-alpha): issue aws#31634: added integration tests for re…

…dshift node type

packages/@aws-cdk/aws-redshift-alpha/README.md

@@ -616,6 +616,7 @@ as it's a fast operation and typically completes in minutes. Elastic resize is o
   * dc2.8xlarge
   * ds2.xlarge
   * ds2.8xlarge
+  * ra3.large
   * ra3.xlplus
   * ra3.4xlarge
   * ra3.16xlarge

packages/@aws-cdk/aws-redshift-alpha/test/integ.cluster-nodetype.ts

@@ -0,0 +1,35 @@
+import * as ec2 from 'aws-cdk-lib/aws-ec2';
+import { Stack, App, StackProps } from 'aws-cdk-lib';
+import * as integ from '@aws-cdk/integ-tests-alpha';
+import { Construct } from 'constructs';
+import * as redshift from '../lib';
+
+class RedshiftRA3LargeTestStack extends Stack {
+  constructor(scope: Construct, id: string, props?: StackProps) {
+    super(scope, id, props);
+
+    const vpc = new ec2.Vpc(this, 'VPC', {
+      restrictDefaultSecurityGroup: false
+    });
+
+    new redshift.Cluster(this, 'RA3LargeCluster', {
+      vpc: vpc,
+      vpcSubnets: {
+        subnetType: ec2.SubnetType.PUBLIC,
+      },
+      masterUser: {
+        masterUsername: 'admin',
+      },
+      nodeType: redshift.NodeType.RA3_LARGE,
+      numberOfNodes: 2,
+    });
+  }
+}
+
+const app = new App();
+
+new integ.IntegTest(app, 'RA3LargeNodeIntegTest', {
+  testCases: [new RedshiftRA3LargeTestStack(app, 'redshift-ra3-large-integ')],
+});
+
+app.synth();