Test demo function with sam local invoke on commit.

Author: ericljiang

.github/workflows/on-push.yml

@@ -17,3 +17,5 @@ jobs:
       run: ./gradlew build
     - name: Build demo with Gradle
       run: ./gradlew :demo:packageLambda
+    - name: Invoke demo function locally
+      run: ./gradlew :demo:localInvoke

demo/build.gradle

@@ -41,3 +41,22 @@ task buildDocker(type: Exec) {
     dependsOn classes
     commandLine './buildDocker.sh'
 }
+
+task localInvoke {
+    doLast {
+        def file = new File(getTemporaryDir(), "out.json")
+        def event = '{"message": "hello world"}'
+        def command = "echo '${event}' | sam local invoke --event - > ${file}"
+        println "Running command: ${command}"
+        exec {
+            executable 'bash'
+            args '-c', command
+        }
+        def expectedOutput = '{"message":"Received message: hello world"}'
+        def actualOutput = file.text.trim()
+        println actualOutput
+        if (!expectedOutput.equals(actualOutput)) {
+            throw new RuntimeException("Expected output:\n\t${expectedOutput}\nActual output:\n\t${actualOutput}")
+        }
+    }
+}

demo/template.yaml

@@ -0,0 +1,8 @@
+Transform: AWS::Serverless-2016-10-31
+Resources:
+  DemoFunction:
+    Type: AWS::Serverless::Function
+    Properties:
+      CodeUri: build/distributions/demo.zip # generated by ../gradlew :demo:packageLambda
+      Handler: "" # handler is built into the runtime, value is not used
+      Runtime: provided