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992 B
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Testing with Chaijs |
Chai is a testing library for Node.js.
Installation
You can install Chai in your project through npm.
npm install chai
Pro-tip
Add Chai in devDependencies of package.json, using * as version tag. In this way, you always have the most recent version.
"devDependencies": {
"chai": "*"
}
How to use
Assert
You can use assert to check if your tests are performing well.
var assert = require('chai').assert, foo = 'bar', beverages = { tea: [ 'chai', 'matcha', 'oolong' ] };
assert.typeOf(foo, 'string'); // without optional message
assert.typeOf(foo, 'string', 'foo is a string'); // with optional message
assert.equal(foo, 'bar', 'foo equal `bar`');
assert.lengthOf(foo, 3, 'foo`s value has a length of 3');
assert.lengthOf(beverages.tea, 3, 'beverages has 3 types of tea');
More info:
help chai assert
help chai expectations