Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- function minusLastItem(array) {
- return array.slice(0, array.length -1);
- }
- function copyFirstHalf(array) {
- return array.slice(0, array.length / 2);
- }
- /* From here down, you are not expected to
- understand.... for now :)
- Nothing to see here!
- */
- // tests
- function testFunctionWorks(fn, input, expected) {
- const result = fn(input);
- if (
- result &&
- result.length === expected.length &&
- result.every(function(item) {
- return expected.indexOf(item) > -1;
- })
- ) {
- console.log('SUCCESS: `' + fn.name + '` works!');
- return true;
- } else {
- console.error('FAILURE: `' + fn.name + '` is not working');
- return false;
- }
- }
- function runTests() {
- const list = [
- 'red bull',
- 'monster',
- 'amp',
- 'rockstar',
- 'full throttle',
- 'kickstart',
- ];
- const result1 = ['red bull', 'monster', 'amp', 'rockstar', 'full throttle'];
- const result2 = ['red bull', 'monster', 'amp'];
- const list2 = ['lions', 'tigers', 'bears'];
- const result3 = ['lions'];
- const testResults = [
- testFunctionWorks(minusLastItem, list, result1),
- testFunctionWorks(copyFirstHalf, list, result2),
- testFunctionWorks(copyFirstHalf, list2, result3)
- ];
- const numPassing = testResults.filter(function(result) {
- return result;
- }).length;
- console.log(numPassing + ' out of ' + testResults.length + ' tests passing.');
- }
Add Comment
Please, Sign In to add comment