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findDrillJS created by dtstanley - https://repl.it/G9Hl/80
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function divisibleBy5(array) { | |
return array.find(function fiveDiv(x){ | |
return x % 5===0; | |
}); | |
} | |
/* From here down, you are not expected to | |
understand.... for now :) | |
Nothing to see here! | |
*/ | |
// tests | |
function testFunctionWorks(fn, input, expected) { | |
if (fn(input) === expected) { | |
console.log('SUCCESS: `' + fn.name + '` works on `[' + input + ']`'); | |
return true; | |
} | |
else { | |
console.error( | |
'FAILURE: `' + fn.name + '([' + input + '])` should be ' + expected + | |
' but was ' + fn(input) | |
); | |
return false; | |
} | |
} | |
function runTests() { | |
var input1 = [13, 22, 4, 47, 15, 35, 82]; | |
var result1 = 15; | |
var input2 = [25, 20, 15, 10, 5]; | |
var result2 = 25; | |
var testResults = [ | |
testFunctionWorks(divisibleBy5, input1, result1), | |
testFunctionWorks(divisibleBy5, input2, result2), | |
]; | |
var numPassing = testResults.filter(function(result){ return result; }).length; | |
console.log(numPassing + ' out of ' + testResults.length + ' tests passing.'); | |
} | |
runTests(); |
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