Angular Test
- Unit Test – Single unit of code, Component, Service
- Integration Test – More than Unit Test, less than end to end test
- End to End Test – Frontend, WebServer, DB
Basic Tool
How to run test
ng test
This commands runs all spec.ts files (project test files)
If you see package.json, following command also defined
"scripts": {
"test": "ng test"
}
test as ng test, so we can use this
npm test
If you want to run only one file (test file)
ng test --include xxxx.spec.ts
First Test
Let’s write simple test.
app/first-test.spec.ts
describe('Hello Htest', () => {
let hello;
beforeEach(() => {
hello = {};
})
it('it should be true', () => {
hello.a = true;
expect(hello.a).toBe(true);
})
})
This is jasmine test sytle.
describe is test root. beforeEach is pre-preparation for test (call everytime to start test)
it indicates test function.
To run this, you can see result in browser (karma)
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