Add test harness functions to test trigger onInstanceDeploy and onIns…

…tanceDelete functions (#150)

packages/spectral/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@prismatic-io/spectral",
-  "version": "7.8.1",
+  "version": "7.8.2",
   "description": "Utility library for building Prismatic components",
   "keywords": [
     "prismatic"

packages/spectral/src/testing.ts

@@ -29,6 +29,7 @@ import {
   TriggerResult as InvokeTriggerResult,
   DataSourceType,
   DataSourceResult as InvokeDataSourceResult,
+  TriggerEventFunctionReturn,
 } from "./types";
 import { spyOn } from "jest-mock";
 
@@ -311,6 +312,36 @@ export class ComponentTestHarness<TComponent extends Component> {
     );
   }
 
+  public async triggerOnInstanceDeploy(
+    key: string,
+    params?: Record<string, unknown>,
+    context?: Partial<ActionContext>
+  ): Promise<void | TriggerEventFunctionReturn> {
+    const trigger = this.component.triggers[key];
+    if (!trigger.onInstanceDeploy) {
+      throw new Error("Trigger does not support onInstanceDeploy");
+    }
+    return trigger.onInstanceDeploy(
+      this.buildContext<ActionContext>(baseActionContext, context),
+      this.buildParams(trigger.inputs, params)
+    );
+  }
+
+  public async triggerOnInstanceDelete(
+    key: string,
+    params?: Record<string, unknown>,
+    context?: Partial<ActionContext>
+  ): Promise<void | TriggerEventFunctionReturn> {
+    const trigger = this.component.triggers[key];
+    if (!trigger.onInstanceDelete) {
+      throw new Error("Trigger does not support onInstanceDelete");
+    }
+    return trigger.onInstanceDelete(
+      this.buildContext<ActionContext>(baseActionContext, context),
+      this.buildParams(trigger.inputs, params)
+    );
+  }
+
   public async action(
     key: string,
     params?: Record<string, unknown>,