to be empty

• <object> [not] to be empty

Asserts that an object is empty.

expect({}, 'to be empty');

In case of a failing expectation you get the following output:

expect({ a: 'a', b: 'b' }, 'to be empty');

expected { a: 'a', b: 'b' } to be empty
 
{
  
a: 'a', 
//
 
should be removed
  
b: 'b' 
//
 
should be removed
}

This assertion can be negated using the not flag:

expect({ a: 'a', b: 'b' }, 'not to be empty');

In case of a failing expectation you get the following output:

expect({}, 'not to be empty');

expected {} not to be empty