Add tests for converters (#556)

packages/open-next/src/converters/aws-apigw-v2.ts

@@ -91,6 +91,7 @@ async function convertToApiGatewayProxyResultV2(
 ): Promise<APIGatewayProxyResultV2> {
   const headers: Record<string, string> = {};
   Object.entries(result.headers)
+    .map(([key, value]) => [key.toLowerCase(), value] as const)
     .filter(
       ([key]) =>
         !CloudFrontBlacklistedHeaders.some((header) =>

packages/open-next/src/http/request.ts

@@ -15,9 +15,9 @@ export class IncomingMessage extends http.IncomingMessage {
   }: {
     method: string;
     url: string;
-    headers: Record<string, string>;
+    headers: Record<string, string | string[]>;
     body?: Buffer;
-    remoteAddress: string;
+    remoteAddress?: string;
   }) {
     super({
       encrypted: true,

packages/tests-unit/tests/converters/aws-apigw-v1.test.ts

@@ -0,0 +1,264 @@
+/* eslint-disable sonarjs/no-duplicate-string */
+import converter from "@opennextjs/aws/converters/aws-apigw-v1.js";
+import { APIGatewayProxyEvent, APIGatewayProxyResult } from "aws-lambda";
+import { Readable } from "stream";
+
+describe("convertTo", () => {
+  describe("AWS API Gateway v2 Result", () => {
+    it("Should parse the headers", async () => {
+      const response = (await converter.convertTo({
+        body: Readable.toWeb(Readable.from(Buffer.from(""))),
+        headers: {
+          "content-type": "application/json",
+          test: "test",
+        },
+        isBase64Encoded: false,
+        statusCode: 200,
+      })) as APIGatewayProxyResult;
+
+      expect(response.headers).toStrictEqual({
+        "content-type": "application/json",
+        test: "test",
+      });
+    });
+
+    it("Should parse the headers with arrays", async () => {
+      const response = (await converter.convertTo({
+        body: Readable.toWeb(Readable.from(Buffer.from(""))),
+        headers: {
+          test: ["test1", "test2"],
+        },
+        isBase64Encoded: false,
+        statusCode: 200,
+      })) as APIGatewayProxyResult;
+
+      expect(response.multiValueHeaders).toStrictEqual({
+        test: ["test1", "test2"],
+      });
+    });
+
+    it("Should parse single and array headers", async () => {
+      const response = (await converter.convertTo({
+        body: Readable.toWeb(Readable.from(Buffer.from(""))),
+        headers: {
+          single: "test",
+          multi: ["test1", "test2"],
+        },
+        isBase64Encoded: false,
+        statusCode: 200,
+      })) as APIGatewayProxyResult;
+
+      expect(response.headers).toStrictEqual({
+        single: "test",
+      });
+      expect(response.multiValueHeaders).toStrictEqual({
+        multi: ["test1", "test2"],
+      });
+    });
+  });
+});
+
+describe("convertFrom", () => {
+  it("Should convert a simple APIGatewayProxyEvent", async () => {
+    const event: APIGatewayProxyEvent = {
+      body: JSON.stringify({ message: "Hello, world!" }),
+      headers: {
+        "content-type": "application/json",
+      },
+      multiValueHeaders: {},
+      httpMethod: "POST",
+      isBase64Encoded: false,
+      path: "/",
+      pathParameters: null,
+      queryStringParameters: null,
+      multiValueQueryStringParameters: null,
+      stageVariables: null,
+      requestContext: {
+        identity: {
+          sourceIp: "::1",
+        },
+      } as any,
+      resource: "",
+    };
+
+    const response = await converter.convertFrom(event);
+
+    expect(response).toEqual({
+      type: "core",
+      method: "POST",
+      rawPath: "/",
+      url: "/",
+      body: Buffer.from('{"message":"Hello, world!"}'),
+      headers: {
+        "content-type": "application/json",
+      },
+      remoteAddress: "::1",
+      query: {},
+      cookies: {},
+    });
+  });
+
+  it("Should handle multiValueHeaders", async () => {
+    const event: APIGatewayProxyEvent = {
+      body: JSON.stringify({ message: "Hello, world!" }),
+      headers: {},
+      multiValueHeaders: {
+        test: ["test1", "test2"],
+      },
+      httpMethod: "POST",
+      isBase64Encoded: false,
+      path: "/",
+      pathParameters: null,
+      queryStringParameters: null,
+      multiValueQueryStringParameters: null,
+      stageVariables: null,
+      requestContext: {
+        identity: {
+          sourceIp: "::1",
+        },
+      } as any,
+      resource: "",
+    };
+
+    const response = await converter.convertFrom(event);
+
+    expect(response).toEqual({
+      type: "core",
+      method: "POST",
+      rawPath: "/",
+      url: "/",
+      body: Buffer.from('{"message":"Hello, world!"}'),
+      headers: {
+        test: "test1,test2",
+      },
+      remoteAddress: "::1",
+      query: {},
+      cookies: {},
+    });
+  });
+
+  it("Should handle queryStringParameters and multiValueQueryStringParameters", async () => {
+    const event: APIGatewayProxyEvent = {
+      body: JSON.stringify({ message: "Hello, world!" }),
+      headers: {},
+      multiValueHeaders: {},
+      httpMethod: "POST",
+      isBase64Encoded: false,
+      path: "/",
+      pathParameters: null,
+      queryStringParameters: {
+        test: "test",
+      },
+      multiValueQueryStringParameters: {
+        test: ["test"],
+      },
+      stageVariables: null,
+      requestContext: {
+        identity: {
+          sourceIp: "::1",
+        },
+      } as any,
+      resource: "",
+    };
+
+    const response = await converter.convertFrom(event);
+
+    expect(response).toEqual({
+      type: "core",
+      method: "POST",
+      rawPath: "/",
+      url: "/?test=test",
+      body: Buffer.from('{"message":"Hello, world!"}'),
+      headers: {},
+      remoteAddress: "::1",
+      query: {
+        test: ["test"],
+      },
+      cookies: {},
+    });
+  });
+
+  it("Should handle cookies", async () => {
+    const event: APIGatewayProxyEvent = {
+      body: JSON.stringify({ message: "Hello, world!" }),
+      headers: {
+        "content-type": "application/json",
+      },
+      multiValueHeaders: {
+        cookie: ["test1=1", "test2=2"],
+      },
+      httpMethod: "POST",
+      isBase64Encoded: false,
+      path: "/",
+      pathParameters: null,
+      queryStringParameters: null,
+      multiValueQueryStringParameters: null,
+      stageVariables: null,
+      requestContext: {
+        identity: {
+          sourceIp: "::1",
+        },
+      } as any,
+      resource: "",
+    };
+
+    const response = await converter.convertFrom(event);
+
+    expect(response).toEqual({
+      type: "core",
+      method: "POST",
+      rawPath: "/",
+      url: "/",
+      body: Buffer.from('{"message":"Hello, world!"}'),
+      headers: {
+        "content-type": "application/json",
+        cookie: "test1=1,test2=2",
+      },
+      remoteAddress: "::1",
+      query: {},
+      cookies: {
+        test1: "1",
+        test2: "2",
+      },
+    });
+  });
+
+  it("Should handle base64 encoded body", async () => {
+    const event: APIGatewayProxyEvent = {
+      body: Buffer.from("Hello, world!").toString("base64"),
+      headers: {
+        "content-type": "application/json",
+      },
+      multiValueHeaders: {},
+      httpMethod: "GET",
+      isBase64Encoded: true,
+      path: "/",
+      pathParameters: null,
+      queryStringParameters: null,
+      multiValueQueryStringParameters: null,
+      stageVariables: null,
+      requestContext: {
+        identity: {
+          sourceIp: "::1",
+        },
+      } as any,
+      resource: "",
+    };
+
+    const response = await converter.convertFrom(event);
+
+    expect(response).toEqual({
+      type: "core",
+      method: "GET",
+      rawPath: "/",
+      url: "/",
+      body: Buffer.from("Hello, world!"),
+      headers: {
+        "content-type": "application/json",
+      },
+      remoteAddress: "::1",
+      query: {},
+      cookies: {},
+    });
+  });
+});