Menu
I need to assert equality between two points in my JavaScript unit tests:
var pnt1 = {x: 2, y: 3};
and
var pnt2 = {x: 2, y: 3};
When I do
assert.equal(pnt1, pnt2);
It says the points are different. Can I exclude from the check the fact that the objects are different instances (so in fact they are "not equal")?
I'd like to avoid creating a list of assert, one for each field to test (in this case .x and .y)
508
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.
When you use equal , Chai uses a === comparision. So when comparing objects, Chai will check for reference. When you use deepEqual , Chai will go down the object hierarchy and compare every value of every property. Example: const a = {"a": "a"}; const b = {"a": "a"}; expect(a).
Chai is such an assertion library, which provides certain interfaces to implement assertions for any JavaScript-based framework. Chai's interfaces are broadly classified into two: TDD styles and BDD styles.
The assert. deepEqual() method tests if two objects, and their child objects, are equal, using the == operator. If the two objects are not equal, an assertion failure is being caused, and the program is terminated. To compare the objects using the === operator, use the assert.
Instead of .equal, use .deepEqual:
assert.deepEqual(pnt1, pnt2);
This will perform a deep comparison instead of simply checking for equality.
181
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
