chore: include widgets in snapshot tests; starting with canary and waf [skip ci] (#97)

Related #91 

POC, starting with WAF and CW Canaries.

---

_By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license_

Author: voho

test/monitoring/SnapshotUtil.ts

@@ -0,0 +1,19 @@
+/**
+ * Executes a snapshot test for widgets, summary widgets and alarm widgets.
+ * @param monitoring monitoring to test
+ */
+import { Stack } from "monocdk";
+import { Dashboard } from "monocdk/aws-cloudwatch";
+import { Monitoring } from "../../lib";
+
+export function addMonitoringDashboardsToStack(
+  stack: Stack,
+  monitoring: Monitoring
+) {
+  const summaryDashboard = new Dashboard(stack, "Summary");
+  summaryDashboard.addWidgets(...monitoring.summaryWidgets());
+  const alarmDashboard = new Dashboard(stack, "Alarm");
+  alarmDashboard.addWidgets(...monitoring.alarmWidgets());
+  const dashboard = new Dashboard(stack, "Default");
+  dashboard.addWidgets(...monitoring.widgets());
+}

test/monitoring/aws-synthetics/SyntheticsCanaryMonitoring.test.ts

@@ -4,6 +4,7 @@ import { Canary, Code, Runtime, Schedule, Test } from "monocdk/aws-synthetics";
 
 import { AlarmWithAnnotation } from "../../../lib";
 import { SyntheticsCanaryMonitoring } from "../../../lib/monitoring/aws-synthetics";
+import { addMonitoringDashboardsToStack } from "../SnapshotUtil";
 import { TestMonitoringScope } from "../TestMonitoringScope";
 
 test("snapshot test: no alarms", () => {
@@ -19,8 +20,9 @@ test("snapshot test: no alarms", () => {
 
   const scope = new TestMonitoringScope(stack, "Scope");
 
-  new SyntheticsCanaryMonitoring(scope, { canary });
+  const monitoring = new SyntheticsCanaryMonitoring(scope, { canary });
 
+  addMonitoringDashboardsToStack(stack, monitoring);
   expect(Template.fromStack(stack)).toMatchSnapshot();
 });
 
@@ -39,7 +41,7 @@ test("snapshot test: all alarms", () => {
 
   let numAlarmsCreated = 0;
 
-  new SyntheticsCanaryMonitoring(scope, {
+  const monitoring = new SyntheticsCanaryMonitoring(scope, {
     canary,
     addAverageLatencyAlarm: {
       Warning: {
@@ -74,5 +76,6 @@ test("snapshot test: all alarms", () => {
   });
 
   expect(numAlarmsCreated).toStrictEqual(5);
+  addMonitoringDashboardsToStack(stack, monitoring);
   expect(Template.fromStack(stack)).toMatchSnapshot();
 });

test/monitoring/aws-synthetics/__snapshots__/SyntheticsCanaryMonitoring.test.ts.snap

@@ -3,6 +3,7 @@ import { Template } from "monocdk/assertions";
 import { CfnWebACL } from "monocdk/aws-wafv2";
 
 import { WafV2Monitoring } from "../../../lib";
+import { addMonitoringDashboardsToStack } from "../SnapshotUtil";
 import { TestMonitoringScope } from "../TestMonitoringScope";
 
 test("snapshot test: no alarms", () => {
@@ -19,7 +20,8 @@ test("snapshot test: no alarms", () => {
 
   const scope = new TestMonitoringScope(stack, "Scope");
 
-  new WafV2Monitoring(scope, { acl });
+  const monitoring = new WafV2Monitoring(scope, { acl });
 
+  addMonitoringDashboardsToStack(stack, monitoring);
   expect(Template.fromStack(stack)).toMatchSnapshot();
 });