BDCloud
A personal cloud storage solution, that fit what I need.
This project was bootstrapped with Create React App.
Table of Contents
- Data structure
- Available Scripts
- Supported Browsers
- Debugging in the Editor
- Formatting Code Automatically
- Running Tests
Data structure
This solution is database-free, in order to be easier to setup. All the datas are stored with JSON on the server. In the config.js you should edit the conf.staticUrl value. It is the value where your files, and data-structure informations are stored.
For example, we store all our data on a local server accessible via http://localhost:5000
(with cors enabled)
And the BDCloud project is accessible via http://localhost
Here is the example folder structure :
/
share/
essay.doc
photos/
monday-16/
photos/
IMG01.PNG
IMG02.PNG
IMG03.PNG
data.json
tuesday-17/
photos/
IMG04.PNG
IMG05.PNG
IMG06.PNG
data.json
my-weekend-with-bob/
photos/
IMG07.PNG
IMG08.PNG
IMG09.PNG
data.json
You can share each file alone. For example :
A file
http://localhost/share/essay.doc
An image
http://localhost/photos/monday-16/photos/IMG01.PNG
Or anythind else...
But if you want to share more than 1 file with a single URL, it is also possible. Currently only photos & audio files are supported.
In the example, there is 3 photos albums that can be shared : http://localhost/photos/monday-16
, http://localhost/photos/monday-17
and http://localhost/photos/my-weekend-with-bob
To enable this, you have to add a data.json
file well structured.
All the data.json
files should not be created manually but by a script. This script will be open-sourced shortly.
Photos
The data.json
file :
{
"type": "photos", // required
"title": "2011-03-02 Journée Chant Lit St Antoine", // the title of your album
"description": "lorem ipsum dolor sit amet", // a description if you want it
"rootURL": "http://localhost:5000/", // the root url where your files are stored
"files": [
{
"path": "photos/monday-16/photos/IMG01.PNG", // the path of your image on the server (full url : rootURL + path)
"author": "Bob", // the author of the photo to be displayed on the bottom of the photo
"src": {
"thumb": "thumb_200/IMG01.PNG", // the 200px thumb of the image
},
"size": 2.798389, // file size in MB
"birthtime": "2018-03-05T17:46:12.584Z",
"type": "PNG"
}
]
}
Records
TODO
Available Scripts
In the project directory, you can run:
npm start
Runs the app in the development mode.
Open http://localhost:3000 to view it in the browser.
The page will reload if you make edits.
You will also see any lint errors in the console.
npm test
Launches the test runner in the interactive watch mode.
See the section about running tests for more information.
npm run build
Builds the app for production to the build
folder.
It correctly bundles React in production mode and optimizes the build for the best performance.
The build is minified and the filenames include the hashes.
Your app is ready to be deployed!
See the section about deployment for more information.
Supported Browsers
By default, the generated project uses the latest version of React.
You can refer to the React documentation for more information about supported browsers.
Debugging in the Editor
This feature is currently only supported by Visual Studio Code and WebStorm.
Visual Studio Code and WebStorm support debugging out of the box with Create React App. This enables you as a developer to write and debug your React code without leaving the editor, and most importantly it enables you to have a continuous development workflow, where context switching is minimal, as you don’t have to switch between tools.
Visual Studio Code
You would need to have the latest version of VS Code and VS Code Chrome Debugger Extension installed.
Then add the block below to your launch.json
file and put it inside the .vscode
folder in your app’s root directory.
{
"version": "0.2.0",
"configurations": [{
"name": "Chrome",
"type": "chrome",
"request": "launch",
"url": "http://localhost:3000",
"webRoot": "${workspaceRoot}/src",
"sourceMapPathOverrides": {
"webpack:///src/*": "${webRoot}/*"
}
}]
}
Note: the URL may be different if you've made adjustments via the HOST or PORT environment variables.
Start your app by running npm start
, and start debugging in VS Code by pressing F5
or by clicking the green debug icon. You can now write code, set breakpoints, make changes to the code, and debug your newly modified code—all from your editor.
Having problems with VS Code Debugging? Please see their troubleshooting guide.
WebStorm
You would need to have WebStorm and JetBrains IDE Support Chrome extension installed.
In the WebStorm menu Run
select Edit Configurations...
. Then click +
and select JavaScript Debug
. Paste http://localhost:3000
into the URL field and save the configuration.
Note: the URL may be different if you've made adjustments via the HOST or PORT environment variables.
Start your app by running npm start
, then press ^D
on macOS or F9
on Windows and Linux or click the green debug icon to start debugging in WebStorm.
The same way you can debug your application in IntelliJ IDEA Ultimate, PhpStorm, PyCharm Pro, and RubyMine.
Formatting Code Automatically
Prettier is an opinionated code formatter with support for JavaScript, CSS and JSON. With Prettier we format the code you write automatically before each commit to ensure a code style within your project. See the Prettier's GitHub page for more information, and look at this page to see it in action.
You might want to integrate Prettier in your favorite editor. Read the section on Editor Integration on the Prettier GitHub page.
Running Tests
Note: this feature is available with
react-scripts@0.3.0
and higher.
Read the migration guide to learn how to enable it in older projects!
Create React App uses Jest as its test runner. To prepare for this integration, we did a major revamp of Jest so if you heard bad things about it years ago, give it another try.
Jest is a Node-based runner. This means that the tests always run in a Node environment and not in a real browser. This lets us enable fast iteration speed and prevent flakiness.
While Jest provides browser globals such as window
thanks to jsdom, they are only approximations of the real browser behavior. Jest is intended to be used for unit tests of your logic and your components rather than the DOM quirks.
We recommend that you use a separate tool for browser end-to-end tests if you need them. They are beyond the scope of Create React App.
Filename Conventions
Jest will look for test files with any of the following popular naming conventions:
- Files with
.js
suffix in__tests__
folders. - Files with
.test.js
suffix. - Files with
.spec.js
suffix.
The .test.js
/ .spec.js
files (or the __tests__
folders) can be located at any depth under the src
top level folder.
We recommend to put the test files (or __tests__
folders) next to the code they are testing so that relative imports appear shorter. For example, if App.test.js
and App.js
are in the same folder, the test just needs to import App from './App'
instead of a long relative path. Colocation also helps find tests more quickly in larger projects.
Command Line Interface
When you run npm test
, Jest will launch in the watch mode. Every time you save a file, it will re-run the tests, just like npm start
recompiles the code.
The watcher includes an interactive command-line interface with the ability to run all tests, or focus on a search pattern. It is designed this way so that you can keep it open and enjoy fast re-runs. You can learn the commands from the “Watch Usage” note that the watcher prints after every run:
Version Control Integration
By default, when you run npm test
, Jest will only run the tests related to files changed since the last commit. This is an optimization designed to make your tests run fast regardless of how many tests you have. However it assumes that you don’t often commit the code that doesn’t pass the tests.
Jest will always explicitly mention that it only ran tests related to the files changed since the last commit. You can also press a
in the watch mode to force Jest to run all tests.
Jest will always run all tests on a continuous integration server or if the project is not inside a Git or Mercurial repository.
Writing Tests
To create tests, add it()
(or test()
) blocks with the name of the test and its code. You may optionally wrap them in describe()
blocks for logical grouping but this is neither required nor recommended.
Jest provides a built-in expect()
global function for making assertions. A basic test could look like this:
import sum from './sum';
it('sums numbers', () => {
expect(sum(1, 2)).toEqual(3);
expect(sum(2, 2)).toEqual(4);
});
All expect()
matchers supported by Jest are extensively documented here.
You can also use jest.fn()
and expect(fn).toBeCalled()
to create “spies” or mock functions.
Testing Components
There is a broad spectrum of component testing techniques. They range from a “smoke test” verifying that a component renders without throwing, to shallow rendering and testing some of the output, to full rendering and testing component lifecycle and state changes.
Different projects choose different testing tradeoffs based on how often components change, and how much logic they contain. If you haven’t decided on a testing strategy yet, we recommend that you start with creating simple smoke tests for your components:
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
it('renders without crashing', () => {
const div = document.createElement('div');
ReactDOM.render(<App />, div);
});
This test mounts a component and makes sure that it didn’t throw during rendering. Tests like this provide a lot of value with very little effort so they are great as a starting point, and this is the test you will find in src/App.test.js
.
When you encounter bugs caused by changing components, you will gain a deeper insight into which parts of them are worth testing in your application. This might be a good time to introduce more specific tests asserting specific expected output or behavior.
If you’d like to test components in isolation from the child components they render, we recommend using shallow()
rendering API from Enzyme. To install it, run:
npm install --save enzyme enzyme-adapter-react-16 react-test-renderer
Alternatively you may use yarn
:
yarn add enzyme enzyme-adapter-react-16 react-test-renderer
As of Enzyme 3, you will need to install Enzyme along with an Adapter corresponding to the version of React you are using. (The examples above use the adapter for React 16.)
The adapter will also need to be configured in your global setup file:
src/setupTests.js
import { configure } from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';
configure({ adapter: new Adapter() });
Note: Keep in mind that if you decide to "eject" before creating
src/setupTests.js
, the resultingpackage.json
file won't contain any reference to it. Read here to learn how to add this after ejecting.
Now you can write a smoke test with it:
import React from 'react';
import { shallow } from 'enzyme';
import App from './App';
it('renders without crashing', () => {
shallow(<App />);
});
Unlike the previous smoke test using ReactDOM.render()
, this test only renders <App>
and doesn’t go deeper. For example, even if <App>
itself renders a <Button>
that throws, this test will pass. Shallow rendering is great for isolated unit tests, but you may still want to create some full rendering tests to ensure the components integrate correctly. Enzyme supports full rendering with mount()
, and you can also use it for testing state changes and component lifecycle.
You can read the Enzyme documentation for more testing techniques. Enzyme documentation uses Chai and Sinon for assertions but you don’t have to use them because Jest provides built-in expect()
and jest.fn()
for spies.
Here is an example from Enzyme documentation that asserts specific output, rewritten to use Jest matchers:
import React from 'react';
import { shallow } from 'enzyme';
import App from './App';
it('renders welcome message', () => {
const wrapper = shallow(<App />);
const welcome = <h2>Welcome to React</h2>;
// expect(wrapper.contains(welcome)).to.equal(true);
expect(wrapper.contains(welcome)).toEqual(true);
});
All Jest matchers are extensively documented here.
Nevertheless you can use a third-party assertion library like Chai if you want to, as described below.
Additionally, you might find jest-enzyme helpful to simplify your tests with readable matchers. The above contains
code can be written more simply with jest-enzyme.
expect(wrapper).toContainReact(welcome)
To enable this, install jest-enzyme
:
npm install --save jest-enzyme
Alternatively you may use yarn
:
yarn add jest-enzyme
Import it in src/setupTests.js
to make its matchers available in every test:
import 'jest-enzyme';
Using Third Party Assertion Libraries
We recommend that you use expect()
for assertions and jest.fn()
for spies. If you are having issues with them please file those against Jest, and we’ll fix them. We intend to keep making them better for React, supporting, for example, pretty-printing React elements as JSX.
However, if you are used to other libraries, such as Chai and Sinon, or if you have existing code using them that you’d like to port over, you can import them normally like this:
import sinon from 'sinon';
import { expect } from 'chai';
and then use them in your tests like you normally do.
Initializing Test Environment
Note: this feature is available with
react-scripts@0.4.0
and higher.
If your app uses a browser API that you need to mock in your tests or if you just need a global setup before running your tests, add a src/setupTests.js
to your project. It will be automatically executed before running your tests.
For example:
src/setupTests.js
const localStorageMock = {
getItem: jest.fn(),
setItem: jest.fn(),
clear: jest.fn()
};
global.localStorage = localStorageMock
Note: Keep in mind that if you decide to "eject" before creating
src/setupTests.js
, the resultingpackage.json
file won't contain any reference to it, so you should manually create the propertysetupTestFrameworkScriptFile
in the configuration for Jest, something like the following:
"jest": { // ... "setupTestFrameworkScriptFile": "<rootDir>/src/setupTests.js" }
Focusing and Excluding Tests
You can replace it()
with xit()
to temporarily exclude a test from being executed.
Similarly, fit()
lets you focus on a specific test without running any other tests.
Coverage Reporting
Jest has an integrated coverage reporter that works well with ES6 and requires no configuration.
Run npm test -- --coverage
(note extra --
in the middle) to include a coverage report like this:
Note that tests run much slower with coverage so it is recommended to run it separately from your normal workflow.
Configuration
The default Jest coverage configuration can be overriden by adding any of the following supported keys to a Jest config in your package.json.
Supported overrides:
Example package.json:
{
"name": "your-package",
"jest": {
"collectCoverageFrom" : [
"src/**/*.{js,jsx}",
"!<rootDir>/node_modules/",
"!<rootDir>/path/to/dir/"
],
"coverageThreshold": {
"global": {
"branches": 90,
"functions": 90,
"lines": 90,
"statements": 90
}
},
"coverageReporters": ["text"],
"snapshotSerializers": ["my-serializer-module"]
}
}
Continuous Integration
By default npm test
runs the watcher with interactive CLI. However, you can force it to run tests once and finish the process by setting an environment variable called CI
.
When creating a build of your application with npm run build
linter warnings are not checked by default. Like npm test
, you can force the build to perform a linter warning check by setting the environment variable CI
. If any warnings are encountered then the build fails.
Popular CI servers already set the environment variable CI
by default but you can do this yourself too: