If a mocha test looks like this
describe("create a user") {
before("login to system") {}
it("execute assertion") {}
after("delete the user") {}
}
If either before or it block failed, does the after block still execute or no?
Yes, when test fails it will run after hook.
This code:
before("login to system", () => {
console.log("BEFORE")
throw new Error('error');
})
it('testing...', (done) => {
console.log("IT")
done();
});
after("delete the user", () => {
console.log("AFTER")
})
Output this:
BEFORE
1) "before all" hook: login to system for "testing..."
AFTER
0 passing (14ms)
1 failing
1) States Get
"before all" hook: login to system for "testing...":
Error: error
at Context.<anonymous> (test\index.js:22:11)
at processImmediate (node:internal/timers:463:21)
Also you can check this github discussion: #1612 where here says:
Please see the example below, showing that after is correctly invoked after the beforeEach failure
The code
// example.js
before(function() {
console.log('before');
});
after(function() {
console.log('after');
});
describe('suite', function() {
beforeEach(function() {
throw new Error('In beforeEach');
});
afterEach(function() {
console.log('afterEach');
});
it('test', function() {
// example
});
});
And the output.
// Test run
$ mocha example.js
before
․afterEach
after
0 passing (7ms)
1 failing
1) suite "before each" hook:
Error: In beforeEach
at Context.<anonymous> (/Users/dstjules/git/mocha/example.js:11:11)
at callFn (/usr/local/lib/node_modules/mocha/lib/runnable.js:251:21)
at Hook.Runnable.run (/usr/local/lib/node_modules/mocha/lib/runnable.js:244:7)
at next (/usr/local/lib/node_modules/mocha/lib/runner.js:259:10)
at Immediate._onImmediate (/usr/local/lib/node_modules/mocha/lib/runner.js:276:5)
at processImmediate [as _immediateCallback] (timers.js:358:17)