-
-
Save dtstanley/11226c82ec0ee3532c8d68cc6a754cd9 to your computer and use it in GitHub Desktop.
squareMapJS created by dtstanley - https://repl.it/G9HI/139
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
function squares(array) { | |
return array.map(function(x){ | |
return Math.pow(x,2); | |
}) | |
} | |
/* From here down, you are not expected to | |
understand.... for now :) | |
Nothing to see here! | |
*/ | |
// tests | |
function testFunctionWorks(fn, input, expected) { | |
var 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 + '([' + input + '])` should be ' + expected + | |
' but was ' + fn(input)) | |
return false; | |
} | |
} | |
function runTests() { | |
var input1 = [1, 2, 3, 4, 5]; | |
var result1 = [1, 4, 9, 16, 25]; | |
var input2 = [2, 4, 6, 8]; | |
var result2 = [4, 16, 36, 64]; | |
var testResults = [ | |
testFunctionWorks(squares, input1, result1), | |
testFunctionWorks(squares, input2, result2), | |
]; | |
var numPassing = testResults.filter(function(result){ return result; }).length; | |
console.log(numPassing + ' out of ' + testResults.length + ' tests passing.'); | |
} | |
runTests(); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment