feat: Add Jest configuration and tests for project and user handlers

tasker-server/jest.config.json

@@ -0,0 +1,13 @@
+{
+  "preset": "ts-jest",
+  "testEnvironment": "node",
+  "setupFiles": ["<rootDir>/jest.env.js"],
+  "moduleFileExtensions": ["ts", "js"],
+  "transform": {
+    "^.+\\.tsx?$": "ts-jest"
+  },
+  "testMatch": ["**/tests/**/*.test.ts"],
+  "moduleNameMapper": {
+    "^@/(.*)$": "<rootDir>/src/$1"
+  }
+}

tasker-server/jest.env.js

@@ -0,0 +1,6 @@
+process.env.SLS_REGION = "mock-region";
+process.env.TASKER_TASK_TABLE_NAME = "mock-task-table";
+process.env.TASKER_PROJECT_TABLE_NAME = "mock-project-table";
+process.env.TASKER_USER_TABLE_NAME = "mock-user-table";
+process.env.TASKER_TASK_EXTRA_TABLE_NAME = "mock-task-extra-table";
+process.env.TASKER_TEAM_TABLE_NAME = "mock-team-table";

tasker-server/package.json

@@ -9,7 +9,9 @@
     "infra:destroy": "cd terraform && AWS_PROFILE=default terraform destroy",
     "sls:package": "AWS_PROFILE=default sls package",
     "sls:deploy": "AWS_PROFILE=default sls deploy",
-    "sls:remove": "AWS_PROFILE=default sls remove"
+    "sls:remove": "AWS_PROFILE=default sls remove",
+    "test": "jes --coverage",
+    "test:ci": "jest --no-coverage --ci"
   },
   "author": "",
   "license": "ISC",
@@ -22,10 +24,13 @@
     "uuid": "^11.0.3"
   },
   "devDependencies": {
+    "@types/jest": "^29.5.14",
     "@types/node": "^22.9.1",
     "eslint": "^9.15.0",
+    "jest": "^29.7.0",
     "prettier": "^3.3.3",
     "serverless-prune-plugin": "^2.1.0",
+    "ts-jest": "^29.2.5",
     "typescript": "^5.6.3"
   }
 }

tasker-server/serverless.yml

@@ -10,7 +10,6 @@ provider:
   runtime: nodejs20.x
   environment:
     SLS_REGION: ${self:provider.region}
-    API_BASE_URL: ${ssm:/tasker/api/base-url}
     TASKER_TASK_TABLE_NAME: ${ssm:/tasker/dynamodb/task-table-name}
     TASKER_PROJECT_TABLE_NAME: ${ssm:/tasker/dynamodb/project-table-name}
     TASKER_USER_TABLE_NAME: ${ssm:/tasker/dynamodb/user-table-name}

tasker-server/tests/createProject.test.ts

@@ -0,0 +1,94 @@
+const mockPut = jest.fn();
+
+import { handler } from "../src/handlers/createProject";
+import { v4 as uuidv4 } from "uuid";
+
+jest.mock("@aws-sdk/lib-dynamodb", () => ({
+  DynamoDBDocument: {
+    from: jest.fn(() => ({
+      put: mockPut,
+    })),
+  },
+}));
+jest.mock("uuid", () => ({
+  v4: jest.fn(),
+}));
+
+describe("handler", () => {
+  afterAll(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("should create a new project and return 201 response", async () => {
+    const mockUUID = "mock-uuid";
+    (uuidv4 as jest.Mock).mockReturnValue(mockUUID);
+
+    const event = {
+      body: JSON.stringify({
+        name: "Test Project",
+        description: "This is a test project.",
+        startDate: "2024-01-01",
+        endDate: "2024-12-31",
+      }),
+    };
+
+    mockPut.mockResolvedValue({});
+
+    const response = await handler(event);
+
+    expect(mockPut).toHaveBeenCalledWith({
+      TableName: "mock-project-table",
+      Item: {
+        category: "projects",
+        projectId: `project_${mockUUID}`,
+        name: "Test Project",
+        description: "This is a test project.",
+        startDate: "2024-01-01",
+        endDate: "2024-12-31",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 201,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        category: "projects",
+        projectId: `project_${mockUUID}`,
+        name: "Test Project",
+        description: "This is a test project.",
+        startDate: "2024-01-01",
+        endDate: "2024-12-31",
+      }),
+    });
+  });
+
+  it("should return 500 response on error", async () => {
+    const event = {
+      body: JSON.stringify({
+        name: "Test Project",
+        description: "This is a test project.",
+        startDate: "2024-01-01",
+        endDate: "2024-12-31",
+      }),
+    };
+
+    const mockError = new Error("DynamoDB error");
+    mockPut.mockRejectedValue(mockError);
+
+    const response = await handler(event);
+
+    expect(response).toEqual({
+      statusCode: 500,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        message: `Error creating project: ${mockError.message}`,
+      }),
+    });
+  });
+});

tasker-server/tests/createTask.test.ts

@@ -0,0 +1,122 @@
+const mockPut = jest.fn();
+
+import { handler } from "../src/handlers/createTask";
+import { v4 as uuidv4 } from "uuid";
+
+jest.mock("@aws-sdk/lib-dynamodb", () => ({
+  DynamoDBDocument: {
+    from: jest.fn(() => ({
+      put: mockPut,
+    })),
+  },
+}));
+jest.mock("uuid", () => ({
+  v4: jest.fn(),
+}));
+
+describe("createTask handler", () => {
+  afterAll(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("should create a new task and return 201 response", async () => {
+    const mockUUID = "mock-uuid";
+    (uuidv4 as jest.Mock).mockReturnValue(mockUUID);
+
+    const event = {
+      body: JSON.stringify({
+        title: "Test Task",
+        description: "This is a test task.",
+        status: "In Progress",
+        priority: "High",
+        tags: ["test", "jest"],
+        startDate: "2024-01-01",
+        dueDate: "2024-01-15",
+        points: 5,
+        projectId: "project_12345",
+        authorUserId: "user_abc",
+        assignedUserId: "user_xyz",
+      }),
+    };
+
+    mockPut.mockResolvedValue({});
+
+    const response = await handler(event);
+
+    expect(mockPut).toHaveBeenCalledWith({
+      TableName: "mock-task-table",
+      Item: {
+        category: "tasks",
+        taskId: `task_${mockUUID}`,
+        title: "Test Task",
+        description: "This is a test task.",
+        status: "In Progress",
+        priority: "High",
+        tags: ["test", "jest"],
+        startDate: "2024-01-01",
+        dueDate: "2024-01-15",
+        points: 5,
+        projectId: "project_12345",
+        authorUserId: "user_abc",
+        assignedUserId: "user_xyz",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 201,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        category: "tasks",
+        taskId: `task_${mockUUID}`,
+        title: "Test Task",
+        description: "This is a test task.",
+        status: "In Progress",
+        priority: "High",
+        tags: ["test", "jest"],
+        startDate: "2024-01-01",
+        dueDate: "2024-01-15",
+        points: 5,
+        projectId: "project_12345",
+        authorUserId: "user_abc",
+        assignedUserId: "user_xyz",
+      }),
+    });
+  });
+
+  it("should return 500 response on error", async () => {
+    const event = {
+      body: JSON.stringify({
+        title: "Test Task",
+        description: "This is a test task.",
+        status: "In Progress",
+        priority: "High",
+        tags: ["test", "jest"],
+        startDate: "2024-01-01",
+        dueDate: "2024-01-15",
+        points: 5,
+        projectId: "project_12345",
+        authorUserId: "user_abc",
+        assignedUserId: "user_xyz",
+      }),
+    };
+
+    const mockError = new Error("DynamoDB error");
+    mockPut.mockRejectedValue(mockError);
+
+    const response = await handler(event);
+
+    expect(response).toEqual({
+      statusCode: 500,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        message: `Error creating task: ${mockError.message}`,
+      }),
+    });
+  });
+});

tasker-server/tests/createUser.test.ts

@@ -0,0 +1,104 @@
+const mockPut = jest.fn();
+
+import { handler } from "../src/handlers/createUser";
+import { v4 as uuidv4 } from "uuid";
+import { fetchRandomTeamId } from "@/lib/util";
+
+jest.mock("@aws-sdk/lib-dynamodb", () => ({
+  DynamoDBDocument: {
+    from: jest.fn(() => ({
+      put: mockPut,
+    })),
+  },
+}));
+
+jest.mock("uuid", () => ({
+  v4: jest.fn(),
+}));
+
+jest.mock("@/lib/util", () => ({
+  fetchRandomTeamId: jest.fn(),
+}));
+
+describe("createUser handler", () => {
+  beforeAll(() => {
+    jest.spyOn(console, "info").mockImplementation(jest.fn());
+  });
+
+  afterAll(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("should create a new user and log a success message", async () => {
+    const mockUUID = "mock-uuid";
+    const mockTeamId = "team-123";
+    (uuidv4 as jest.Mock).mockReturnValue(mockUUID);
+    (fetchRandomTeamId as jest.Mock).mockResolvedValue(mockTeamId);
+
+    const event = {
+      request: {
+        userAttributes: {
+          preferred_username: "testUser",
+          sub: "cognito-123",
+        },
+      },
+      userName: "fallbackUser",
+    };
+
+    mockPut.mockResolvedValue({});
+
+    const response = await handler(event);
+
+    expect(fetchRandomTeamId).toHaveBeenCalled();
+    expect(mockPut).toHaveBeenCalledWith({
+      TableName: "mock-user-table",
+      Item: {
+        category: "users",
+        cognitoId: "cognito-123",
+        userId: `user_${mockUUID}`,
+        username: "testUser",
+        profilePictureUrl: "p0.jpeg",
+        teamId: mockTeamId,
+      },
+    });
+
+    expect(response).toEqual(event);
+  });
+
+  it("should throw an error if DynamoDB operation fails", async () => {
+    const mockUUID = "mock-uuid";
+    const mockTeamId = "team-123";
+    (uuidv4 as jest.Mock).mockReturnValue(mockUUID);
+    (fetchRandomTeamId as jest.Mock).mockResolvedValue(mockTeamId);
+
+    const event = {
+      request: {
+        userAttributes: {
+          preferred_username: "testUser",
+          sub: "cognito-123",
+        },
+      },
+      userName: "fallbackUser",
+    };
+
+    const mockError = new Error("DynamoDB error");
+    mockPut.mockRejectedValue(mockError);
+
+    await expect(handler(event)).rejects.toThrow(
+      "Error creating user: DynamoDB error"
+    );
+
+    expect(fetchRandomTeamId).toHaveBeenCalled();
+    expect(mockPut).toHaveBeenCalledWith({
+      TableName: "mock-user-table",
+      Item: {
+        category: "users",
+        cognitoId: "cognito-123",
+        userId: `user_${mockUUID}`,
+        username: "testUser",
+        profilePictureUrl: "p0.jpeg",
+        teamId: mockTeamId,
+      },
+    });
+  });
+});

tasker-server/tests/getProjects.test.ts

@@ -0,0 +1,73 @@
+const mockQuery = jest.fn();
+
+import { handler } from "../src/handlers/getProjects";
+
+jest.mock("@aws-sdk/lib-dynamodb", () => ({
+  DynamoDBDocument: {
+    from: jest.fn(() => ({
+      query: mockQuery,
+    })),
+  },
+}));
+
+describe("getProjects handler", () => {
+  afterAll(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("should retrieve projects and return a 200 response", async () => {
+    const mockProjects = [
+      { projectId: "project_1", name: "Project 1" },
+      { projectId: "project_2", name: "Project 2" },
+    ];
+
+    mockQuery.mockResolvedValue({
+      Items: mockProjects,
+    });
+
+    const response = await handler({});
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-project-table",
+      KeyConditionExpression: "category = :category",
+      ExpressionAttributeValues: {
+        ":category": "projects",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 200,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify(mockProjects),
+    });
+  });
+
+  it("should return a 500 response if the query fails", async () => {
+    const mockError = new Error("DynamoDB query error");
+    mockQuery.mockRejectedValue(mockError);
+
+    const response = await handler({});
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-project-table",
+      KeyConditionExpression: "category = :category",
+      ExpressionAttributeValues: {
+        ":category": "projects",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 500,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        message: `Error retrieving projects: ${mockError.message}`,
+      }),
+    });
+  });
+});

tasker-server/tests/getTasks.test.ts

@@ -0,0 +1,131 @@
+const mockQuery = jest.fn();
+const mockFetchUserWithUserId = jest.fn();
+const mockFetchComments = jest.fn();
+const mockFetchAttachments = jest.fn();
+
+import { handler } from "../src/handlers/getTasks";
+
+jest.mock("@aws-sdk/lib-dynamodb", () => ({
+  DynamoDBDocument: {
+    from: jest.fn(() => ({
+      query: mockQuery,
+    })),
+  },
+}));
+
+jest.mock("@/lib/util", () => ({
+  fetchUserWithUserId: mockFetchUserWithUserId,
+  fetchComments: mockFetchComments,
+  fetchAttachments: mockFetchAttachments,
+}));
+
+describe("getTasks handler", () => {
+  afterAll(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("should retrieve tasks with details and return a 200 response", async () => {
+    const mockTasks = [
+      {
+        taskId: "task_1",
+        title: "Task 1",
+        authorUserId: "user_1",
+        assignedUserId: "user_2",
+      },
+      {
+        taskId: "task_2",
+        title: "Task 2",
+      },
+    ];
+
+    const mockAuthor = { userId: "user_1", username: "AuthorUser" };
+    const mockAssignee = { userId: "user_2", username: "AssigneeUser" };
+    const mockComments = [{ commentId: "comment_1", content: "Nice work!" }];
+    const mockAttachments = [
+      { attachmentId: "attachment_1", name: "file.pdf" },
+    ];
+
+    mockQuery.mockResolvedValue({ Items: mockTasks });
+
+    mockFetchUserWithUserId.mockResolvedValueOnce(mockAuthor);
+    mockFetchUserWithUserId.mockResolvedValueOnce(mockAssignee);
+    mockFetchComments.mockResolvedValue(mockComments);
+    mockFetchAttachments.mockResolvedValue(mockAttachments);
+
+    const event = {
+      queryStringParameters: { projectId: "project_123" },
+    };
+
+    const response = await handler(event);
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-task-table",
+      KeyConditionExpression: "category = :category AND projectId = :projectId",
+      IndexName: "GSI-project-id",
+      ExpressionAttributeValues: {
+        ":category": "tasks",
+        ":projectId": "project_123",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 200,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify([
+        {
+          taskId: "task_1",
+          title: "Task 1",
+          authorUserId: "user_1",
+          assignedUserId: "user_2",
+          author: mockAuthor,
+          assignee: mockAssignee,
+          comments: mockComments,
+          attachments: mockAttachments,
+        },
+        {
+          taskId: "task_2",
+          title: "Task 2",
+          author: null,
+          assignee: null,
+          comments: mockComments,
+          attachments: mockAttachments,
+        },
+      ]),
+    });
+  });
+
+  it("should return a 500 response if there is an error", async () => {
+    const mockError = new Error("DynamoDB query error");
+    mockQuery.mockRejectedValue(mockError);
+
+    const event = {
+      queryStringParameters: { projectId: "project_123" },
+    };
+
+    const response = await handler(event);
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-task-table",
+      KeyConditionExpression: "category = :category AND projectId = :projectId",
+      IndexName: "GSI-project-id",
+      ExpressionAttributeValues: {
+        ":category": "tasks",
+        ":projectId": "project_123",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 500,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        message: `Error retrieving tasks: ${mockError.message}`,
+      }),
+    });
+  });
+});

tasker-server/tests/getTeams.test.ts

@@ -0,0 +1,113 @@
+const mockQuery = jest.fn();
+const mockFetchUserWithUserId = jest.fn();
+
+import { handler } from "../src/handlers/getTeams";
+
+jest.mock("@aws-sdk/lib-dynamodb", () => ({
+  DynamoDBDocument: {
+    from: jest.fn(() => ({
+      query: mockQuery,
+    })),
+  },
+}));
+
+jest.mock("@/lib/util", () => ({
+  fetchUserWithUserId: mockFetchUserWithUserId,
+}));
+
+describe("getTeams handler", () => {
+  afterAll(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("should retrieve teams with usernames and return a 200 response", async () => {
+    const mockTeams = [
+      {
+        teamId: "team_1",
+        name: "Team A",
+        productOwnerUserId: "user_1",
+        projectManagerUserId: "user_2",
+      },
+      {
+        teamId: "team_2",
+        name: "Team B",
+        productOwnerUserId: "user_3",
+      },
+    ];
+
+    const mockProductOwner1 = { userId: "user_1", username: "POUser1" };
+    const mockProjectManager1 = { userId: "user_2", username: "PMUser2" };
+    const mockProductOwner2 = { userId: "user_3", username: "POUser3" };
+
+    mockQuery.mockResolvedValue({ Items: mockTeams });
+
+    mockFetchUserWithUserId.mockImplementation((userId) => {
+      if (userId === "user_1") return Promise.resolve(mockProductOwner1);
+      if (userId === "user_2") return Promise.resolve(mockProjectManager1);
+      if (userId === "user_3") return Promise.resolve(mockProductOwner2);
+      return Promise.resolve(null);
+    });
+
+    const response = await handler({});
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-team-table",
+      KeyConditionExpression: "category = :category",
+      ExpressionAttributeValues: {
+        ":category": "teams",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 200,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify([
+        {
+          teamId: "team_1",
+          name: "Team A",
+          productOwnerUserId: "user_1",
+          projectManagerUserId: "user_2",
+          productOwnerUsername: "POUser1",
+          projectManagerUsername: "PMUser2",
+        },
+        {
+          teamId: "team_2",
+          name: "Team B",
+          productOwnerUserId: "user_3",
+          projectManagerUserId: undefined,
+          productOwnerUsername: "POUser3",
+          projectManagerUsername: null,
+        },
+      ]),
+    });
+  });
+
+  it("should return a 500 response if there is an error", async () => {
+    const mockError = new Error("DynamoDB query error");
+    mockQuery.mockRejectedValue(mockError);
+
+    const response = await handler({});
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-team-table",
+      KeyConditionExpression: "category = :category",
+      ExpressionAttributeValues: {
+        ":category": "teams",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 500,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        message: `Error retrieving teams: ${mockError.message}`,
+      }),
+    });
+  });
+});

tasker-server/tests/getUser.test.ts

@@ -0,0 +1,115 @@
+const mockQuery = jest.fn();
+
+import { handler } from "../src/handlers/getUser";
+
+jest.mock("@aws-sdk/lib-dynamodb", () => ({
+  DynamoDBDocument: {
+    from: jest.fn(() => ({
+      query: mockQuery,
+    })),
+  },
+}));
+
+describe("getUser handler", () => {
+  afterAll(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("should retrieve a user and return a 200 response", async () => {
+    const mockUser = {
+      cognitoId: "cognito_123",
+      userId: "user_1",
+      username: "TestUser",
+      category: "users",
+    };
+
+    mockQuery.mockResolvedValue({
+      Items: [mockUser],
+    });
+
+    const event = {
+      pathParameters: { cognitoId: "cognito_123" },
+    };
+
+    const response = await handler(event);
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-user-table",
+      KeyConditionExpression: "category = :category AND cognitoId = :cognitoId",
+      ExpressionAttributeValues: {
+        ":category": "users",
+        ":cognitoId": "cognito_123",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 200,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify(mockUser),
+    });
+  });
+
+  it("should return an empty object if no user is found", async () => {
+    mockQuery.mockResolvedValue({
+      Items: [],
+    });
+
+    const event = {
+      pathParameters: { cognitoId: "cognito_456" },
+    };
+
+    const response = await handler(event);
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-user-table",
+      KeyConditionExpression: "category = :category AND cognitoId = :cognitoId",
+      ExpressionAttributeValues: {
+        ":category": "users",
+        ":cognitoId": "cognito_456",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 200,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({}),
+    });
+  });
+
+  it("should return a 500 response if there is an error", async () => {
+    const mockError = new Error("DynamoDB query error");
+    mockQuery.mockRejectedValue(mockError);
+
+    const event = {
+      pathParameters: { cognitoId: "cognito_123" },
+    };
+
+    const response = await handler(event);
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-user-table",
+      KeyConditionExpression: "category = :category AND cognitoId = :cognitoId",
+      ExpressionAttributeValues: {
+        ":category": "users",
+        ":cognitoId": "cognito_123",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 500,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        message: `Error retrieving user: ${mockError.message}`,
+      }),
+    });
+  });
+});

tasker-server/tests/getUserTasks.test.ts

@@ -0,0 +1,120 @@
+const mockQueryTasks = jest.fn();
+
+import { handler } from "../src/handlers/getUserTasks";
+import { queryTasks } from "@/lib/util";
+
+jest.mock("@/lib/util", () => ({
+  queryTasks: mockQueryTasks,
+}));
+
+describe("getUserTasks handler", () => {
+  afterAll(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("should retrieve tasks authored and assigned to the user and return a 200 response", async () => {
+    const mockAuthorTasks = [
+      { taskId: "task_1", title: "Authored Task 1" },
+      { taskId: "task_2", title: "Authored Task 2" },
+    ];
+    const mockAssigneeTasks = [
+      { taskId: "task_2", title: "Authored Task 2" }, // Duplicate task
+      { taskId: "task_3", title: "Assigned Task 3" },
+    ];
+
+    const mockUniqueTasks = [
+      { taskId: "task_1", title: "Authored Task 1" },
+      { taskId: "task_2", title: "Authored Task 2" },
+      { taskId: "task_3", title: "Assigned Task 3" },
+    ];
+
+    mockQueryTasks
+      .mockResolvedValueOnce(mockAuthorTasks)
+      .mockResolvedValueOnce(mockAssigneeTasks);
+
+    const event = {
+      pathParameters: { userId: "user_123" },
+    };
+
+    const response = await handler(event);
+
+    expect(queryTasks).toHaveBeenCalledWith(
+      "user_123",
+      "GSI-author-user-id",
+      "authorUserId"
+    );
+    expect(queryTasks).toHaveBeenCalledWith(
+      "user_123",
+      "GSI-assigned-user-id",
+      "assignedUserId"
+    );
+
+    expect(response).toEqual({
+      statusCode: 200,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify(mockUniqueTasks),
+    });
+  });
+
+  it("should return a 500 response if queryTasks fails", async () => {
+    const mockError = new Error("Query failed");
+
+    mockQueryTasks.mockRejectedValueOnce(mockError);
+
+    const event = {
+      pathParameters: { userId: "user_123" },
+    };
+
+    const response = await handler(event);
+
+    expect(queryTasks).toHaveBeenCalledWith(
+      "user_123",
+      "GSI-author-user-id",
+      "authorUserId"
+    );
+
+    expect(response).toEqual({
+      statusCode: 500,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        message: `Error retrieving tasks for user: ${mockError.message}`,
+      }),
+    });
+  });
+
+  it("should handle empty author and assignee tasks gracefully", async () => {
+    mockQueryTasks.mockResolvedValueOnce([]).mockResolvedValueOnce([]);
+
+    const event = {
+      pathParameters: { userId: "user_123" },
+    };
+
+    const response = await handler(event);
+
+    expect(queryTasks).toHaveBeenCalledWith(
+      "user_123",
+      "GSI-author-user-id",
+      "authorUserId"
+    );
+    expect(queryTasks).toHaveBeenCalledWith(
+      "user_123",
+      "GSI-assigned-user-id",
+      "assignedUserId"
+    );
+
+    expect(response).toEqual({
+      statusCode: 200,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify([]),
+    });
+  });
+});

tasker-server/tests/getUsers.test.ts

@@ -0,0 +1,98 @@
+const mockQuery = jest.fn();
+
+import { handler } from "../src/handlers/getUsers";
+
+jest.mock("@aws-sdk/lib-dynamodb", () => ({
+  DynamoDBDocument: {
+    from: jest.fn(() => ({
+      query: mockQuery,
+    })),
+  },
+}));
+
+describe("getUsers handler", () => {
+  afterAll(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("should retrieve all users and return a 200 response", async () => {
+    const mockUsers = [
+      { userId: "user_1", username: "User1", category: "users" },
+      { userId: "user_2", username: "User2", category: "users" },
+    ];
+
+    mockQuery.mockResolvedValue({
+      Items: mockUsers,
+    });
+
+    const response = await handler({});
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-user-table",
+      KeyConditionExpression: "category = :category",
+      ExpressionAttributeValues: {
+        ":category": "users",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 200,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify(mockUsers),
+    });
+  });
+
+  it("should return an empty array if no users are found", async () => {
+    mockQuery.mockResolvedValue({
+      Items: [],
+    });
+
+    const response = await handler({});
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-user-table",
+      KeyConditionExpression: "category = :category",
+      ExpressionAttributeValues: {
+        ":category": "users",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 200,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify([]),
+    });
+  });
+
+  it("should return a 500 response if there is an error", async () => {
+    const mockError = new Error("DynamoDB query error");
+    mockQuery.mockRejectedValue(mockError);
+
+    const response = await handler({});
+
+    expect(mockQuery).toHaveBeenCalledWith({
+      TableName: "mock-user-table",
+      KeyConditionExpression: "category = :category",
+      ExpressionAttributeValues: {
+        ":category": "users",
+      },
+    });
+
+    expect(response).toEqual({
+      statusCode: 500,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        message: `Error retrieving users: ${mockError.message}`,
+      }),
+    });
+  });
+});

tasker-server/tests/updateTaskStatus.test.ts

@@ -0,0 +1,120 @@
+const mockUpdate = jest.fn();
+
+import { handler } from "../src/handlers/updateTaskStatus"; // Adjust the path as needed
+
+jest.mock("@aws-sdk/lib-dynamodb", () => ({
+  DynamoDBDocument: {
+    from: jest.fn(() => ({
+      update: mockUpdate,
+    })),
+  },
+}));
+
+describe("updateTaskStatus handler", () => {
+  afterAll(() => {
+    jest.restoreAllMocks();
+  });
+
+  it("should update the task status and return the updated task", async () => {
+    const mockUpdatedTask = {
+      category: "tasks",
+      taskId: "task_123",
+      status: "Completed",
+    };
+
+    mockUpdate.mockResolvedValue({
+      Attributes: mockUpdatedTask,
+    });
+
+    const event = {
+      pathParameters: { taskId: "task_123" },
+      body: JSON.stringify({ status: "Completed" }),
+    };
+
+    const response = await handler(event);
+
+    expect(mockUpdate).toHaveBeenCalledWith({
+      TableName: "mock-task-table",
+      Key: {
+        category: "tasks",
+        taskId: "task_123",
+      },
+      UpdateExpression: "set #status = :status",
+      ExpressionAttributeNames: {
+        "#status": "status",
+      },
+      ExpressionAttributeValues: {
+        ":status": "Completed",
+      },
+      ReturnValues: "ALL_NEW",
+    });
+
+    expect(response).toEqual({
+      statusCode: 200,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify(mockUpdatedTask),
+    });
+  });
+
+  it("should return a 500 response if the update fails", async () => {
+    const mockError = new Error("DynamoDB update error");
+    mockUpdate.mockRejectedValue(mockError);
+
+    const event = {
+      pathParameters: { taskId: "task_123" },
+      body: JSON.stringify({ status: "Completed" }),
+    };
+
+    const response = await handler(event);
+
+    expect(mockUpdate).toHaveBeenCalledWith({
+      TableName: "mock-task-table",
+      Key: {
+        category: "tasks",
+        taskId: "task_123",
+      },
+      UpdateExpression: "set #status = :status",
+      ExpressionAttributeNames: {
+        "#status": "status",
+      },
+      ExpressionAttributeValues: {
+        ":status": "Completed",
+      },
+      ReturnValues: "ALL_NEW",
+    });
+
+    expect(response).toEqual({
+      statusCode: 500,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        message: `Error updating task: ${mockError.message}`,
+      }),
+    });
+  });
+
+  it("should handle invalid input gracefully", async () => {
+    const event = {
+      pathParameters: { taskId: "task_123" },
+      body: JSON.stringify({}),
+    };
+
+    const response = await handler(event);
+
+    expect(response).toEqual({
+      statusCode: 500,
+      headers: {
+        "Content-Type": "application/json",
+        "Access-Control-Allow-Origin": "*",
+      },
+      body: JSON.stringify({
+        message: `Error updating task: DynamoDB update error`,
+      }),
+    });
+  });
+});

tasker-server/tsconfig.json

@@ -22,6 +22,6 @@
       "@/*": ["./src/*"]
     }
   },
-  "include": ["**/*.ts", "**/*.tsx"],
+  "include": ["**/*.ts", "**/*.tsx", "jest.config.js"],
   "exclude": ["node_modules"]
 }