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appsync-lambda.test.ts
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appsync-lambda.test.ts
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import * as path from 'path';
import { Template } from '@aws-cdk/assertions';
import * as lambda from '@aws-cdk/aws-lambda';
import * as cdk from '@aws-cdk/core';
import * as appsync from '../lib';
// GLOBAL GIVEN
let stack: cdk.Stack;
let api: appsync.GraphqlApi;
beforeEach(() => {
stack = new cdk.Stack();
api = new appsync.GraphqlApi(stack, 'baseApi', {
name: 'api',
schema: appsync.SchemaFile.fromAsset(path.join(__dirname, 'appsync.test.graphql')),
});
});
describe('Lambda Data Source configuration', () => {
// GIVEN
let func: lambda.Function;
beforeEach(() => {
func = new lambda.Function(stack, 'func', {
code: lambda.Code.fromAsset(path.join(__dirname, 'verify/iam-query')),
handler: 'iam-query.handler',
runtime: lambda.Runtime.NODEJS_14_X,
});
});
test('default configuration produces name `TableCDKDataSource`', () => {
// WHEN
api.addLambdaDataSource('ds', func);
// THEN
Template.fromStack(stack).hasResourceProperties('AWS::AppSync::DataSource', {
Type: 'AWS_LAMBDA',
Name: 'ds',
});
});
test('appsync configures name correctly', () => {
// WHEN
api.addLambdaDataSource('ds', func, {
name: 'custom',
});
// THEN
Template.fromStack(stack).hasResourceProperties('AWS::AppSync::DataSource', {
Type: 'AWS_LAMBDA',
Name: 'custom',
});
});
test('appsync configures name and description correctly', () => {
// WHEN
api.addLambdaDataSource('ds', func, {
name: 'custom',
description: 'custom description',
});
// THEN
Template.fromStack(stack).hasResourceProperties('AWS::AppSync::DataSource', {
Type: 'AWS_LAMBDA',
Name: 'custom',
Description: 'custom description',
});
});
test('appsync sanitized datasource name from unsupported characters', () => {
const badCharacters = [...'!@#$%^&*()+-=[]{}\\|;:\'",<>?/'];
badCharacters.forEach((badCharacter) => {
// WHEN
const newStack = new cdk.Stack();
const graphqlapi = new appsync.GraphqlApi(newStack, 'baseApi', {
name: 'api',
schema: appsync.SchemaFile.fromAsset(path.join(__dirname, 'appsync.test.graphql')),
});
const dummyFunction = new lambda.Function(newStack, 'func', {
code: lambda.Code.fromAsset(path.join(__dirname, 'verify/iam-query')),
handler: 'iam-query.handler',
runtime: lambda.Runtime.NODEJS_14_X,
});
graphqlapi.addLambdaDataSource(`data-${badCharacter}-source`, dummyFunction);
// THEN
Template.fromStack(newStack).hasResourceProperties('AWS::AppSync::DataSource', {
Type: 'AWS_LAMBDA',
Name: 'datasource',
});
});
});
test('appsync leaves underscore untouched in datasource name', () => {
// WHEN
api.addLambdaDataSource('data_source', func);
// THEN
Template.fromStack(stack).hasResourceProperties('AWS::AppSync::DataSource', {
Type: 'AWS_LAMBDA',
Name: 'data_source',
});
});
test('appsync errors when creating multiple lambda data sources with no configuration', () => {
// THEN
expect(() => {
api.addLambdaDataSource('ds', func);
api.addLambdaDataSource('ds', func);
}).toThrow("There is already a Construct with name 'ds' in GraphqlApi [baseApi]");
});
test('lambda data sources dont require mapping templates', () => {
// WHEN
const ds = api.addLambdaDataSource('ds', func, {
name: 'custom',
description: 'custom description',
});
api.createResolver('TestField', {
dataSource: ds,
typeName: 'test',
fieldName: 'field',
});
// THEN
Template.fromStack(stack).resourceCountIs('AWS::AppSync::Resolver', 1);
});
});
describe('adding lambda data source from imported api', () => {
let func: lambda.Function;
beforeEach(() => {
func = new lambda.Function(stack, 'func', {
code: lambda.Code.fromAsset(path.join(__dirname, 'verify/iam-query')),
handler: 'iam-query.handler',
runtime: lambda.Runtime.NODEJS_14_X,
});
});
test('imported api can add LambdaDbDataSource from id', () => {
// WHEN
const importedApi = appsync.GraphqlApi.fromGraphqlApiAttributes(stack, 'importedApi', {
graphqlApiId: api.apiId,
});
importedApi.addLambdaDataSource('ds', func);
// THEN
Template.fromStack(stack).hasResourceProperties('AWS::AppSync::DataSource', {
Type: 'AWS_LAMBDA',
ApiId: { 'Fn::GetAtt': ['baseApiCDA4D43A', 'ApiId'] },
});
});
test('imported api can add LambdaDataSource from attributes', () => {
// WHEN
const importedApi = appsync.GraphqlApi.fromGraphqlApiAttributes(stack, 'importedApi', {
graphqlApiId: api.apiId,
graphqlApiArn: api.arn,
});
importedApi.addLambdaDataSource('ds', func);
// THEN
Template.fromStack(stack).hasResourceProperties('AWS::AppSync::DataSource', {
Type: 'AWS_LAMBDA',
ApiId: { 'Fn::GetAtt': ['baseApiCDA4D43A', 'ApiId'] },
});
});
});