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homePage.test.tsx
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homePage.test.tsx
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import { mount, ReactWrapper } from "enzyme";
import React from "react";
import { Provider } from "react-redux";
import { BrowserRouter as Router, Link } from "react-router-dom";
import { AnyAction, Store } from "redux";
import MockFactory from "../../../../common/mockFactory";
import { IApplicationState, IProject, AppError, ErrorCode } from "../../../../models/applicationState";
import IProjectActions, * as projectActions from "../../../../redux/actions/projectActions";
import createReduxStore from "../../../../redux/store/store";
import ProjectService from "../../../../services/projectService";
import CondensedList from "../../common/condensedList/condensedList";
import FilePicker, { IFilePickerProps } from "../../common/filePicker/filePicker";
import HomePage, { IHomePageProps, IHomePageState } from "./homePage";
jest.mock("../../common/cloudFilePicker/cloudFilePicker");
import { CloudFilePicker, ICloudFilePickerProps } from "../../common/cloudFilePicker/cloudFilePicker";
jest.mock("../../../../services/projectService");
describe("Homepage Component", () => {
let store: Store<IApplicationState> = null;
let props: IHomePageProps = null;
let wrapper: ReactWrapper = null;
let deleteProjectSpy: jest.SpyInstance = null;
let closeProjectSpy: jest.SpyInstance = null;
const recentProjects = MockFactory.createTestProjects(2);
function createComponent(store, props: IHomePageProps): ReactWrapper {
return mount(
<Provider store={store}>
<Router>
<HomePage {...props} />
</Router>
</Provider>,
);
}
beforeEach(() => {
const projectServiceMock = ProjectService as jest.Mocked<typeof ProjectService>;
projectServiceMock.prototype.load = jest.fn((project) => Promise.resolve(project));
projectServiceMock.prototype.delete = jest.fn(() => Promise.resolve());
store = createStore(recentProjects);
props = createProps();
deleteProjectSpy = jest.spyOn(props.actions, "deleteProject");
closeProjectSpy = jest.spyOn(props.actions, "closeProject");
wrapper = createComponent(store, props);
});
it("should render a New Project Link", () => {
expect(wrapper.find("a.new-project").exists()).toBe(true);
});
it("should not close projects when homepage loads", () => {
expect(closeProjectSpy).not.toBeCalled();
});
it("should call upload when 'Open Project' is clicked", () => {
const fileUpload = wrapper.find("a.file-upload").first();
const filePicker = wrapper.find(FilePicker);
const spy = jest.spyOn(filePicker.instance() as FilePicker, "upload");
fileUpload.simulate("click");
expect(spy).toBeCalled();
});
it("should show an error if the uploaded file is invalid", () => {
const genericError = new Error("Error parsing project file JSON");
const expectedError = new AppError(ErrorCode.ProjectUploadError, "Error uploading project file");
const filePicker = wrapper.find(FilePicker) as ReactWrapper<IFilePickerProps>;
expect(() => filePicker.props().onError(null, genericError)).toThrowError(expectedError);
});
it("should render a file picker", () => {
expect(wrapper).not.toBeNull();
expect(wrapper.find(FilePicker).exists()).toBeTruthy();
});
it("should render a list of recent projects", () => {
expect(wrapper).not.toBeNull();
const homePage = wrapper.find(HomePage).childAt(0) as ReactWrapper<IHomePageProps>;
if (homePage.props().recentProjects && homePage.props().recentProjects.length > 0) {
expect(wrapper.find(CondensedList).exists()).toBeTruthy();
}
});
it("should delete a project when clicking trash icon", async () => {
const store = createStore(recentProjects);
const props = createProps();
const wrapper = createComponent(store, props);
expect(wrapper.find(".recent-project-item").length).toEqual(recentProjects.length);
wrapper.find(".delete-btn").first().simulate("click");
// Accept the modal delete warning
wrapper.find(".modal-footer button").first().simulate("click");
await MockFactory.flushUi();
wrapper.update();
const homePage = wrapper.find(HomePage).childAt(0) as ReactWrapper<IHomePageProps>;
expect(deleteProjectSpy).toBeCalledWith(recentProjects[0]);
expect(homePage.props().recentProjects.length).toEqual(recentProjects.length - 1);
});
it("should call open project action after successful file upload", async () => {
const openProjectSpy = jest.spyOn(props.actions, "loadProject");
const testProject = recentProjects[0];
const testProjectJson = JSON.stringify(testProject);
const testBlob = new Blob([testProjectJson], { type: "application/json" });
const wrapper = createComponent(store, props);
const fileUpload = wrapper.find("a.file-upload").first();
const fileInput = wrapper.find(`input[type="file"]`);
const filePicker = wrapper.find(FilePicker);
const uploadSpy = jest.spyOn(filePicker.instance() as FilePicker, "upload");
fileUpload.simulate("click");
await MockFactory.flushUi(() => {
fileInput.simulate("change", ({ target: { files: [testBlob] } }));
});
await MockFactory.flushUi();
expect(uploadSpy).toBeCalled();
expect(openProjectSpy).toBeCalledWith(testProject);
});
it("opens the cloud picker when selecting the open cloud project button", () => {
const mockCloudFilePicker = CloudFilePicker as jest.Mocked<typeof CloudFilePicker>;
wrapper.find("a.cloud-open-project").first().simulate("click");
expect(mockCloudFilePicker.prototype.open).toBeCalled();
});
it("loads a cloud project after project file has been selected", () => {
const openProjectSpy = jest.spyOn(props.actions, "loadProject");
const testProject = MockFactory.createTestProject("TestProject");
const projectJson = JSON.stringify(testProject, null, 4);
const cloudFilePicker = wrapper.find(CloudFilePicker) as ReactWrapper<ICloudFilePickerProps>;
cloudFilePicker.props().onSubmit(projectJson);
expect(openProjectSpy).toBeCalledWith(testProject);
});
it("closes any open project and navigates to the new project screen", () => {
const eventMock = {
preventDefault: jest.fn(),
};
const homepage = wrapper.find(HomePage).childAt(0) as ReactWrapper<IHomePageProps, IHomePageState>;
homepage.find("a.new-project").simulate("click", eventMock);
expect(closeProjectSpy).toBeCalled();
expect(homepage.props().history.push).toBeCalledWith("/projects/create");
expect(eventMock.preventDefault).toBeCalled();
});
function createProps(): IHomePageProps {
return {
recentProjects: [],
connections: MockFactory.createTestConnections(),
history: {
length: 0,
action: null,
location: null,
push: jest.fn(),
replace: jest.fn(),
go: jest.fn(),
goBack: jest.fn(),
goForward: jest.fn(),
block: jest.fn(),
listen: jest.fn(),
createHref: jest.fn(),
},
location: {
hash: null,
pathname: null,
search: null,
state: null,
},
actions: (projectActions as any) as IProjectActions,
match: {
params: {},
isExact: true,
path: `https://localhost:3000/`,
url: `https://localhost:3000/`,
},
};
}
function createStore(recentProjects: IProject[]): Store<IApplicationState, AnyAction> {
const initialState: IApplicationState = {
currentProject: null,
appSettings: MockFactory.appSettings(),
connections: [],
recentProjects,
appError: null,
};
return createReduxStore(initialState);
}
});