add tests and README

Author: mazyu36

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

@@ -353,6 +353,23 @@ const amplifyApp = new amplify.App(this, 'MyApp', {
 });
 ```
 
+## Build Compute Type
+
+You can specify the build compute type by setting the `buildComputeType` property:
+
+```ts
+const amplifyApp = new amplify.App(this, 'MyApp', {
+  buildComputeType: amplify.BuildComputeType.LARGE_16GB,
+});
+```
+
+Available build compute types:
+- `STANDARD_8GB` - 4 vCPUs, 8 GiB Memory, 128 GB Disk space
+- `LARGE_16GB` - 8 vCPUs, 16 GiB Memory, 128 GB Disk space
+- `XLARGE_72GB` - 36 vCPUs, 72 GiB Memory, 128 GB Disk space
+
+For more information, see [Configuring the build instance for an Amplify application](https://docs.aws.amazon.com/amplify/latest/userguide/custom-build-instance.html).
+
 ## Deploying Assets
 
 `sourceCodeProvider` is optional; when this is not specified the Amplify app can be deployed to using `.zip` packages. The `asset` property can be used to deploy S3 assets to Amplify as part of the CDK:

packages/@aws-cdk/aws-amplify-alpha/test/app.test.ts

@@ -633,3 +633,17 @@ test('throws when compute role is set with a non SSR app', () => {
     });
   }).toThrow('`computeRole` can only be specified for `Platform.WEB_COMPUTE` or `Platform.WEB_DYNAMIC`.');
 });
+
+test.each([amplify.BuildComputeType.STANDARD_8GB, amplify.BuildComputeType.LARGE_16GB, amplify.BuildComputeType.XLARGE_72GB])('create an app with buildComputeType is set to %s', (buildComputeType) => {
+  // WHEN
+  new amplify.App(stack, 'App', {
+    buildComputeType,
+  });
+
+  // THEN
+  Template.fromStack(stack).hasResourceProperties('AWS::Amplify::App', {
+    JobConfig: {
+      BuildComputeType: buildComputeType,
+    },
+  });
+});

packages/@aws-cdk/aws-amplify-alpha/test/integ.app-build-compute-type.js.snapshot/cdk-amplify-app-build-compute-type.assets.json

@@ -0,0 +1,146 @@
+{
+ "Resources": {
+  "AppStandardRoleE2FE6E28": {
+   "Type": "AWS::IAM::Role",
+   "Properties": {
+    "AssumeRolePolicyDocument": {
+     "Statement": [
+      {
+       "Action": "sts:AssumeRole",
+       "Effect": "Allow",
+       "Principal": {
+        "Service": "amplify.amazonaws.com"
+       }
+      }
+     ],
+     "Version": "2012-10-17"
+    }
+   }
+  },
+  "AppStandard64C25109": {
+   "Type": "AWS::Amplify::App",
+   "Properties": {
+    "BasicAuthConfig": {
+     "EnableBasicAuth": false
+    },
+    "IAMServiceRole": {
+     "Fn::GetAtt": [
+      "AppStandardRoleE2FE6E28",
+      "Arn"
+     ]
+    },
+    "JobConfig": {
+     "BuildComputeType": "STANDARD_8GB"
+    },
+    "Name": "AppStandard",
+    "Platform": "WEB"
+   }
+  },
+  "AppLargeRoleF69E1D27": {
+   "Type": "AWS::IAM::Role",
+   "Properties": {
+    "AssumeRolePolicyDocument": {
+     "Statement": [
+      {
+       "Action": "sts:AssumeRole",
+       "Effect": "Allow",
+       "Principal": {
+        "Service": "amplify.amazonaws.com"
+       }
+      }
+     ],
+     "Version": "2012-10-17"
+    }
+   }
+  },
+  "AppLarge1965F25E": {
+   "Type": "AWS::Amplify::App",
+   "Properties": {
+    "BasicAuthConfig": {
+     "EnableBasicAuth": false
+    },
+    "IAMServiceRole": {
+     "Fn::GetAtt": [
+      "AppLargeRoleF69E1D27",
+      "Arn"
+     ]
+    },
+    "JobConfig": {
+     "BuildComputeType": "LARGE_16GB"
+    },
+    "Name": "AppLarge",
+    "Platform": "WEB"
+   }
+  },
+  "AppXLargeRoleF3215EF5": {
+   "Type": "AWS::IAM::Role",
+   "Properties": {
+    "AssumeRolePolicyDocument": {
+     "Statement": [
+      {
+       "Action": "sts:AssumeRole",
+       "Effect": "Allow",
+       "Principal": {
+        "Service": "amplify.amazonaws.com"
+       }
+      }
+     ],
+     "Version": "2012-10-17"
+    }
+   }
+  },
+  "AppXLarge0552F577": {
+   "Type": "AWS::Amplify::App",
+   "Properties": {
+    "BasicAuthConfig": {
+     "EnableBasicAuth": false
+    },
+    "IAMServiceRole": {
+     "Fn::GetAtt": [
+      "AppXLargeRoleF3215EF5",
+      "Arn"
+     ]
+    },
+    "JobConfig": {
+     "BuildComputeType": "XLARGE_72GB"
+    },
+    "Name": "AppXLarge",
+    "Platform": "WEB"
+   }
+  }
+ },
+ "Parameters": {
+  "BootstrapVersion": {
+   "Type": "AWS::SSM::Parameter::Value<String>",
+   "Default": "/cdk-bootstrap/hnb659fds/version",
+   "Description": "Version of the CDK Bootstrap resources in this environment, automatically retrieved from SSM Parameter Store. [cdk:skip]"
+  }
+ },
+ "Rules": {
+  "CheckBootstrapVersion": {
+   "Assertions": [
+    {
+     "Assert": {
+      "Fn::Not": [
+       {
+        "Fn::Contains": [
+         [
+          "1",
+          "2",
+          "3",
+          "4",
+          "5"
+         ],
+         {
+          "Ref": "BootstrapVersion"
+         }
+        ]
+       }
+      ]
+     },
+     "AssertDescription": "CDK bootstrap stack version 6 required. Please run 'cdk bootstrap' with a recent version of the CDK CLI."
+    }
+   ]
+  }
+ }
+}