Test if a Variable or Function is Defined
Problem Explanation
To begin, locate the file “tests/1_unit_tests.js”.
This file contains multiple suites of tests for the project, and this challenge requires you to make the tests in /** 2 */
pass.
Hints
Hint 1
The lines in the test should be changed from assert.fail()
to either assert.isDefined()
or assert.isUndefined()
.
Solutions
Solution #1(Click to Show/Hide)
/** 2 - Use assert.isDefined() or assert.isUndefined() to make the tests pass. **/
test('#isDefined, #isUndefined', function() {
assert.isDefined(null, 'null is not undefined');
assert.isUndefined(undefined, 'undefined IS undefined');
assert.isDefined('hello', 'a string is not undefined');
});