How to run async functions in before hook in mocha.js?
How to run async functions in before hook in mocha.js?
1 answer
by
haylee.mertz ,
2 months ago
@lew
To run async functions in a before hook in Mocha.js, you can use the async keyword in the before hook function and await the async function call inside the hook.
Here's an example of how to run an async function in a before hook in Mocha.js:
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const assert = require('assert');
describe('Async Function Example', () => {
let testData;
// Before hook with async keyword
before(async () => {
// Call your async function and assign the result to a variable
testData = await fetchData();
});
// Test case using the data fetched in the before hook
it('should have fetched data', () => {
assert.equal(testData, 'test data');
});
// Async function to fetch data
async function fetchData() {
return new Promise((resolve) => {
setTimeout(() => {
resolve('test data');
}, 1000);
});
}
});
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In this example, the before hook is defined with the async keyword, and an async function fetchData is called inside the hook using await. The fetched data is then stored in the testData variable, which can be accessed in the test cases.