Unit Test with Jasmine - Tuong-Nguyen/Angular-D3-Cometd GitHub Wiki

Jasmine is the testing framework used by Angular team. Therefore, it would be good to use it for testing our Angular project.

Jasmine

Structure

describe beforeAll/afterAll beforeEach/afterEach it expect Pending/Focus

• xit

• pending

• fit

• fdescribe

Matcher

expect(actual).toBe(matcher);

• String
• Existence
• Object
• Array
• Custom

Spy

• Track function invocation
• Parameter lists for all invocations
• Can call through
• Can call another function
• Can return arbitrary value
• Can throw Error

Mock the clock and Date

• setTimeout - setInterval
• Set Date

Asynchronous

• Default timeout = 5 seconds
• Done

Setup Jasmine

Server (Node)

Install

npm install jasmine --save

Create configuration file

"node_modules/.bin/jasmine" init

Run

Add a task test into package.json

"scripts": {
    "test": "jasmine"
  }

Run the tests with command: npm test

Combine with compile script for compiling typescript files:

"scripts": {
    "compile": "tsc -p .",
    "test": "jasmine"
  }

Continuous Testing

• Install nodemon which monitors file changes and restart the application when there are changes. ` npm install nodemon --save-dev '
• Configure nodemone nodemon.json json { "verbose": true, "ignore": ["*.ts", "node_modules/"] }
• Add npm script to run test when there are changes

"scripts": {
    "compile": "tsc -p .",
    "testwatch": "nodemon -x npm run test"
  }