Test if a Value is a String
To begin, locate the file “tests/1_unit_tests.js” and scroll to the suite of tests for ‘Strings’.
This file contains multiple suites of tests for the project, and this challenge requires you to make the tests in /** 13 */
pass.
Hints
Hint 1
Check the responses of the error messages if your tests fail, and make sure you understand the types of the parameters being checked by the assertion.
Hint 2
The lines in the test should be changed from assert.fail()
to either assert.isString()
or assert.isNotString()
.
Solutions
Solution 1 (Click to Show/Hide)
/** 13 - #isString asserts that the actual value is a string. **/
test('#isString, #isNotString', function() {
assert.isNotString(Math.sin(Math.PI / 4), 'a float is not a string');
assert.isString(process.env.PATH, 'env vars are strings (or undefined)');
assert.isString(JSON.stringify({ type: 'object' }), 'a JSON is a string');
});