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https://github.com/swift-server/swift-aws-lambda-runtime.git
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Sébastien Stormacq
cef85b9fe8
This new example project show four testing strategies for Swift Lambda function - Unit testing the business logic (not specific to Swift Lambda) - Integration testing the handler method - Local invocation with the Swift Lambda Runtime - Local invocation with SAM **[IMPORTANT]** To allow testing the handler, I had to change visibility of a method in the Runtime project. This method is clearly marked for testing only, so it should not be a problem. Happy to read feedback and discuss however.
63 lines
2.0 KiB
Swift
63 lines
2.0 KiB
Swift
//===----------------------------------------------------------------------===//
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//
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// This source file is part of the SwiftAWSLambdaRuntime open source project
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//
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// Copyright (c) 2024 Apple Inc. and the SwiftAWSLambdaRuntime project authors
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// Licensed under Apache License v2.0
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//
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// See LICENSE.txt for license information
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// See CONTRIBUTORS.txt for the list of SwiftAWSLambdaRuntime project authors
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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//===----------------------------------------------------------------------===//
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import AWSLambdaEvents
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import AWSLambdaRuntime
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import Logging
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import Testing
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@testable import APIGatewayLambda // to access the business code
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@testable import AWSLambdaRuntimeCore // to access the LambdaContext
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#if canImport(FoundationEssentials)
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import FoundationEssentials
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#else
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import Foundation
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#endif
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@Suite("Handler Tests")
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public struct HandlerTest {
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@Test("Invoke handler")
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public func invokeHandler() async throws {
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// read event.json file
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let testBundle = Bundle.module
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guard let eventURL = testBundle.url(forResource: "event", withExtension: "json") else {
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Issue.record("event.json not found in test bundle")
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return
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}
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let eventData = try Data(contentsOf: eventURL)
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// decode the event
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let apiGatewayRequest = try JSONDecoder().decode(APIGatewayV2Request.self, from: eventData)
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// create a mock LambdaContext
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let lambdaContext = LambdaContext.__forTestsOnly(
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requestID: UUID().uuidString,
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traceID: UUID().uuidString,
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invokedFunctionARN: "arn:",
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timeout: .milliseconds(6000),
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logger: Logger(label: "fakeContext")
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)
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// call the handler with the event and context
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let response = try await MyHandler().handler(event: apiGatewayRequest, context: lambdaContext)
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// assert the response
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#expect(response.statusCode == .ok)
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#expect(response.body == "Hello world of swift lambda!")
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}
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}
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