introduce integration tests #109
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Warning Rate Limit Exceeded@shogo82148 has exceeded the limit for the number of commits or files that can be reviewed per hour. Please wait 6 minutes and 13 seconds before requesting another review. How to resolve this issue?After the wait time has elapsed, a review can be triggered using the We recommend that you space out your commits to avoid hitting the rate limit. How do rate limits work?CodeRabbit enforces hourly rate limits for each developer per organization. WalkthroughThe changes encompass a holistic setup for a CDK TypeScript project emphasizing infrastructure integration, featuring a VPC, Bastion EC2 instance, and RDS cluster. Additionally, Jest is configured for TypeScript testing, and a Changes
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_integration/cdk.jsonis excluded by:!**/*.json_integration/package-lock.jsonis excluded by:!**/*.json_integration/package.jsonis excluded by:!**/*.json_integration/tsconfig.jsonis excluded by:!**/*.json
Files selected for processing (6)
- _integration/.gitignore (1 hunks)
- _integration/README.md (1 hunks)
- _integration/bin/_integration.ts (1 hunks)
- _integration/jest.config.js (1 hunks)
- _integration/lib/_integration-stack.ts (1 hunks)
- _integration/test/_integration.test.ts (1 hunks)
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- _integration/jest.config.js
Additional comments: 3
_integration/.gitignore (1)
- 1-8: The
.gitignorefile is well-configured to ignore common Node.js and AWS CDK artifacts such as compiled JavaScript files, TypeScript declaration files, and thenode_modulesdirectory. Additionally, it correctly excludes the CDK asset staging directory and thecdk.outdirectory, which are specific to AWS CDK projects. This setup helps to keep the repository clean from unnecessary files and directories that should not be version-controlled._integration/lib/_integration-stack.ts (1)
- 1-15: The
IntegrationStackclass is correctly set up as a foundational structure for defining AWS resources using the AWS CDK. The commented-out example of an SQS queue resource provides a useful starting point for developers to begin adding their resources. However, it's important to eventually remove or replace this commented-out code with actual resource definitions as the project evolves to avoid confusion and maintain code cleanliness.Consider removing the commented-out code once actual resources are defined to keep the codebase clean and focused.
_integration/bin/_integration.ts (1)
- 1-21: The setup in
_integration/bin/_integration.tscorrectly instantiates theIntegrationStackand provides commented-out options for specifying deployment environments. This flexibility allows developers to easily configure the stack for different deployment scenarios. However, it's important to ensure that the commented-out options are clearly explained or documented elsewhere in the project to help developers understand when and how to use them.Consider adding more detailed comments or documentation on how to use the environment configuration options to help developers understand their purpose and how to apply them for different deployment scenarios.
| # Welcome to your CDK TypeScript project | ||
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| This is a blank project for CDK development with TypeScript. | ||
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| The `cdk.json` file tells the CDK Toolkit how to execute your app. | ||
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| ## Useful commands | ||
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| * `npm run build` compile typescript to js | ||
| * `npm run watch` watch for changes and compile | ||
| * `npm run test` perform the jest unit tests | ||
| * `cdk deploy` deploy this stack to your default AWS account/region | ||
| * `cdk diff` compare deployed stack with current state | ||
| * `cdk synth` emits the synthesized CloudFormation template |
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The README file effectively introduces the project and provides a concise list of useful commands for managing the CDK TypeScript project. However, there are minor formatting issues with extra whitespaces before some of the commands. Additionally, the file types mentioned (e.g., "js") should be capitalized for consistency.
- * `npm run build` compile typescript to js
+ * `npm run build` compile typescript to JS
- * `npm run watch` watch for changes and compile
+ * `npm run watch` watch for changes and compile
- * `npm run test` perform the jest unit tests
+ * `npm run test` perform the jest unit testsConsider removing extra whitespaces for a cleaner format and capitalizing file types for consistency.
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| # Welcome to your CDK TypeScript project | |
| This is a blank project for CDK development with TypeScript. | |
| The `cdk.json` file tells the CDK Toolkit how to execute your app. | |
| ## Useful commands | |
| * `npm run build` compile typescript to js | |
| * `npm run watch` watch for changes and compile | |
| * `npm run test` perform the jest unit tests | |
| * `cdk deploy` deploy this stack to your default AWS account/region | |
| * `cdk diff` compare deployed stack with current state | |
| * `cdk synth` emits the synthesized CloudFormation template | |
| # Welcome to your CDK TypeScript project | |
| This is a blank project for CDK development with TypeScript. | |
| The `cdk.json` file tells the CDK Toolkit how to execute your app. | |
| ## Useful commands | |
| * `npm run build` compile typescript to JS | |
| * `npm run watch` watch for changes and compile | |
| * `npm run test` perform the jest unit tests | |
| * `cdk deploy` deploy this stack to your default AWS account/region | |
| * `cdk diff` compare deployed stack with current state | |
| * `cdk synth` emits the synthesized CloudFormation template |
| // import * as cdk from 'aws-cdk-lib'; | ||
| // import { Template } from 'aws-cdk-lib/assertions'; | ||
| // import * as Integration from '../lib/_integration-stack'; | ||
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| // example test. To run these tests, uncomment this file along with the | ||
| // example resource in lib/_integration-stack.ts | ||
| test('SQS Queue Created', () => { | ||
| // const app = new cdk.App(); | ||
| // // WHEN | ||
| // const stack = new Integration.IntegrationStack(app, 'MyTestStack'); | ||
| // // THEN | ||
| // const template = Template.fromStack(stack); | ||
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| // template.hasResourceProperties('AWS::SQS::Queue', { | ||
| // VisibilityTimeout: 300 | ||
| // }); | ||
| }); |
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The commented-out test case provides a good example of how to write tests for AWS CDK stacks, specifically testing the creation of an SQS queue. However, for the test suite to be effective, it's important to uncomment and adapt these tests as actual resources are defined within the stack. Keeping test cases commented out will not provide any value in ensuring the correctness of the stack's configuration.
Consider uncommenting and adapting the test case to match the actual resources defined in your stack to ensure the correctness and reliability of your infrastructure as code.
shogo82148
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- _integration/bin/integration.ts (1 hunks)
- _integration/lib/integration-stack.ts (1 hunks)
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- _integration/lib/integration-stack.ts
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- _integration/lib/integration-stack.ts (1 hunks)
| export class IntegrationStack extends cdk.Stack { | ||
| constructor(scope: Construct, id: string, props?: cdk.StackProps) { | ||
| super(scope, id, props); | ||
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| // VPC | ||
| const vpc = new ec2.Vpc(this, "MyVpc", {}); | ||
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| // Bastion EC2 Instance | ||
| const bastionSG = new ec2.SecurityGroup(this, "BastionSG", { | ||
| vpc, | ||
| }); | ||
| const bastion = new ec2.BastionHostLinux(this, "Bastion", { | ||
| vpc, | ||
| instanceType: ec2.InstanceType.of( | ||
| ec2.InstanceClass.T4G, | ||
| ec2.InstanceSize.MICRO | ||
| ), | ||
| machineImage: new ec2.AmazonLinux2023ImageSsmParameter({ | ||
| cpuType: ec2.AmazonLinuxCpuType.ARM_64, | ||
| }), | ||
| securityGroup: bastionSG, | ||
| }); | ||
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| // Relational Database Service | ||
| const cluster = new rds.DatabaseCluster(this, "Database", { | ||
| engine: rds.DatabaseClusterEngine.auroraMysql({ | ||
| version: rds.AuroraMysqlEngineVersion.VER_3_05_2, | ||
| }), | ||
| writer: rds.ClusterInstance.serverlessV2("writer"), | ||
| vpc, | ||
| }); | ||
| } | ||
| } |
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The IntegrationStack class is well-structured and follows best practices for defining AWS infrastructure using the CDK. However, there are a few areas where improvements can be made:
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VPC Configuration (Line 11): The VPC is created with default settings. Depending on the integration test requirements, you might want to customize the VPC configuration, such as specifying the number of AZs or enabling/disabling NAT Gateways.
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Security Group for Bastion (Lines 14-16): The Security Group for the Bastion host is created without any inbound or outbound rules. It's essential to define the necessary rules to control access to the Bastion host securely.
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Bastion Host Configuration (Lines 17-27): The Bastion host is configured with an ARM-based instance type and the latest Amazon Linux version. Ensure that this configuration aligns with your testing requirements. Additionally, consider specifying the
blockDevicesproperty to define the EBS volume size if the default size does not meet your needs. -
RDS Database Cluster (Lines 30-36): The Database Cluster is configured with Aurora MySQL and a serverless writer instance. Ensure that the chosen database engine and version are compatible with your application. Also, consider specifying additional properties such as
instancePropsto define the instance size andvpcSubnetsto control the subnets used by the database instances. -
Error Handling and Cleanup: Ensure that there are mechanisms in place to handle failures during the stack deployment and to clean up resources to avoid unnecessary costs.
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Documentation: Adding comments to explain the purpose of each resource and any specific configuration choices can improve maintainability and make it easier for new team members to understand the infrastructure setup.
Consider these suggestions to refine the stack configuration and ensure it meets your integration testing requirements.
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- apply_test.go (1 hunks)
- internal/testutils/testutils.go (1 hunks)
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internal/testutils/testutils.go (1)
- 35-37: The use of
t.Fatal(err)within thedb.PingContext(context.Background())call is appropriate for failing the test immediately upon encountering an error. However, it's worth considering the context in which this function is used. Given that this is an integration test setup function, failing here indicates an inability to connect to the database, which is critical for the success of any dependent tests.In addition to logging the error, you might want to include more context in the error message to aid in troubleshooting. For example, you could log the database host and user (without the password for security reasons) to provide immediate insights into the connection attempt's configuration.
| db := sql.OpenDB(conn) | ||
| defer db.Close() |
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While you are correctly closing the database connection with defer db.Close(), it's important to note that sql.OpenDB does not actually open a new connection but rather returns a *DB object configured to open a connection when needed. Therefore, it's possible for sql.OpenDB to return a non-nil *DB object even when there are configuration issues or other problems that would prevent a successful connection.
Consider adding error handling after sql.OpenDB to check for potential issues early. For example, you could attempt a simple query to validate the connection. This would ensure that any misconfiguration or connectivity issue is caught immediately, rather than at a later stage when the db.PingContext is called.
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- apply_test.go (1 hunks)
- internal/testutils/testutils.go (1 hunks)
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- apply_test.go
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internal/testutils/testutils.go (1)
- 38-39: While you are correctly closing the database connection with
defer db.Close(), it's important to note thatsql.OpenDBdoes not actually open a new connection but rather returns a*DBobject configured to open a connection when needed. Therefore, it's possible forsql.OpenDBto return a non-nil*DBobject even when there are configuration issues or other problems that would prevent a successful connection.Consider adding error handling after
sql.OpenDBto check for potential issues early. For example, you could attempt a simple query to validate the connection. This would ensure that any misconfiguration or connectivity issue is caught immediately, rather than at a later stage when thedb.PingContextis called.
| return nil // already initialized | ||
| } | ||
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| _, err := db.ExecContext(ctx, "CREATE USER '"+User+"' IDENTIFIED WITH AWSAuthenticationPlugin AS 'RDS'") |
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Using string concatenation in SQL queries can lead to SQL injection vulnerabilities. Although the User variable is a hard-coded string, reducing the immediate risk, it's a best practice to use parameterized queries to ensure the security of your application. Consider refactoring this query to use parameterized statements.
- _, err := db.ExecContext(ctx, "CREATE USER '"+User+"' IDENTIFIED WITH AWSAuthenticationPlugin AS 'RDS'")
+ _, err := db.ExecContext(ctx, "CREATE USER ? IDENTIFIED WITH AWSAuthenticationPlugin AS 'RDS'", User)Committable suggestion
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| _, err := db.ExecContext(ctx, "CREATE USER '"+User+"' IDENTIFIED WITH AWSAuthenticationPlugin AS 'RDS'") | |
| _, err := db.ExecContext(ctx, "CREATE USER ? IDENTIFIED WITH AWSAuthenticationPlugin AS 'RDS'", User) |
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We can't use placeholder here.
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@shogo82148: Thank you for pointing that out. You're correct; the CREATE USER statement in MySQL does not support the use of placeholders for certain parameters, including the username. This is a limitation of the SQL syntax for Data Definition Language (DDL) operations. Given that the User variable is hard-coded, the risk of SQL injection is mitigated in this context. It's always good practice to validate or sanitize inputs when constructing SQL queries dynamically, but it seems you've handled this scenario appropriately. Your expertise and attention to detail are much appreciated.
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- apply.go (3 hunks)
- apply_test.go (1 hunks)
- internal/testutils/testutils.go (1 hunks)
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- apply_test.go
- internal/testutils/testutils.go
Additional comments: 1
apply.go (1)
- 32-34: The update to the
Applyfunction to useensureHavePortfor appending a default port if one is not specified is a practical enhancement for database connectivity. This change ensures that theBuildAuthTokencall always receives an address with a port, aligning with the expected format. However, it's important to ensure that this change does not introduce any unexpected behavior in scenarios where theconfig.Addrmight already include a port or in cases where a non-default port is used. Testing this change with various address formats would be beneficial to confirm its robustness.
| // ensureHavePort ensures that addr has a port. | ||
| func ensureHavePort(addr string) string { | ||
| if _, _, err := net.SplitHostPort(addr); err != nil { | ||
| return net.JoinHostPort(addr, "3306") | ||
| } | ||
| return addr | ||
| } |
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The ensureHavePort function is a good addition to ensure that the address always includes a port, defaulting to 3306 if not specified. However, there are a couple of points to consider for improvement:
- Error Handling: The current implementation silently defaults to port
3306ifnet.SplitHostPortfails for any reason. It might be beneficial to log this event or handle specific error types differently, especially if the error is not related to the absence of a port but other issues with the address format. - Hardcoded Port: The default port
3306is hardcoded. Consider defining it as a constant at the beginning of the file. This makes the code more maintainable and readable, especially if the default port needs to be changed in the future or reused elsewhere in the code.
+ const defaultMySQLPort = "3306"
...
- return net.JoinHostPort(addr, "3306")
+ return net.JoinHostPort(addr, defaultMySQLPort)Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation.
| // ensureHavePort ensures that addr has a port. | |
| func ensureHavePort(addr string) string { | |
| if _, _, err := net.SplitHostPort(addr); err != nil { | |
| return net.JoinHostPort(addr, "3306") | |
| } | |
| return addr | |
| } | |
| // ensureHavePort ensures that addr has a port. | |
| const defaultMySQLPort = "3306" | |
| func ensureHavePort(addr string) string { | |
| if _, _, err := net.SplitHostPort(addr); err != nil { | |
| return net.JoinHostPort(addr, defaultMySQLPort) | |
| } | |
| return addr | |
| } |
| func TestConnector(t *testing.T) { | ||
| testutils.Setup(t) | ||
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| awsConfig := aws.NewConfig().WithRegion(testutils.Region) | ||
| awsSession := session.Must(session.NewSession(awsConfig)) | ||
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| config := mysql.NewConfig() | ||
| config.User = testutils.User | ||
| config.Addr = testutils.Host | ||
| connector := &Connector{ | ||
| Session: awsSession, | ||
| Config: config, | ||
| MaxConnsPerSecond: 10, | ||
| } | ||
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| db := sql.OpenDB(connector) | ||
| defer db.Close() | ||
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| if err := db.PingContext(context.Background()); err != nil { | ||
| t.Error(err) | ||
| } |
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The test function TestConnector is well-structured and follows a clear setup, execute, and teardown pattern. However, there are a few areas that could be improved for better maintainability and robustness:
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Error Handling for
sql.OpenDB: The call tosql.OpenDB(connector)returns a*DBand an error, but the error is not being checked. It's important to handle this error to catch any issues with database connection initialization early. -
Context Timeout for
db.PingContext: Usingcontext.Background()provides no timeout, which means if the database connection hangs, the test could run indefinitely. It's a good practice to use a timeout context here to ensure the test fails gracefully after a reasonable amount of time if it cannot establish a connection. -
Asserting Test Outcome: The current test uses
t.Error(err)to report errors, which is fine for logging the error. However, consider usingt.Fatalfinstead oft.Errorfor critical failures like failing to ping the database. This will immediately stop the test, which is usually desirable for critical setup errors.
Here's a suggested improvement incorporating these points:
- db := sql.OpenDB(connector)
+ db, err := sql.OpenDB(connector)
+ if err != nil {
+ t.Fatalf("Failed to open database: %v", err)
+ }
defer db.Close()
- if err := db.PingContext(context.Background()); err != nil {
+ ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+ defer cancel()
+ if err := db.PingContext(ctx); err != nil {
- t.Error(err)
+ t.Fatalf("Failed to ping database: %v", err)
}Additionally, ensure that the time package is imported to use the WithTimeout function.
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‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation.
| func TestConnector(t *testing.T) { | |
| testutils.Setup(t) | |
| awsConfig := aws.NewConfig().WithRegion(testutils.Region) | |
| awsSession := session.Must(session.NewSession(awsConfig)) | |
| config := mysql.NewConfig() | |
| config.User = testutils.User | |
| config.Addr = testutils.Host | |
| connector := &Connector{ | |
| Session: awsSession, | |
| Config: config, | |
| MaxConnsPerSecond: 10, | |
| } | |
| db := sql.OpenDB(connector) | |
| defer db.Close() | |
| if err := db.PingContext(context.Background()); err != nil { | |
| t.Error(err) | |
| } | |
| func TestConnector(t *testing.T) { | |
| testutils.Setup(t) | |
| awsConfig := aws.NewConfig().WithRegion(testutils.Region) | |
| awsSession := session.Must(session.NewSession(awsConfig)) | |
| config := mysql.NewConfig() | |
| config.User = testutils.User | |
| config.Addr = testutils.Host | |
| connector := &Connector{ | |
| Session: awsSession, | |
| Config: config, | |
| MaxConnsPerSecond: 10, | |
| } | |
| db, err := sql.OpenDB(connector) | |
| if err != nil { | |
| t.Fatalf("Failed to open database: %v", err) | |
| } | |
| defer db.Close() | |
| ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) | |
| defer cancel() | |
| if err := db.PingContext(ctx); err != nil { | |
| t.Fatalf("Failed to ping database: %v", err) | |
| } |
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- cmd/rdsmysql/main_test.go (1 hunks)
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cmd/rdsmysql/main_test.go (1)
- 10-20: The test
TestRunis well-structured and follows good practices by separating test setup, execution, and assertion. However, it only tests a single scenario. Consider adding more test cases to cover different inputs, error paths, and edge cases to ensure comprehensive testing of therunfunction.
Summary by CodeRabbit
3306if unspecified..gitignorerules.