number drills

areaOfRectangle.js

// Area of a Rectangle

function computeArea(width, height) {
	return width * height;
}

function testComputeArea() {
	var width = 3;
	var height = 4;
	var expected = 12;
	if (computeArea(width, height) === expected) {
		console.log('SUCCESS: `computeArea` is working');
	}
	else {
		console.log('FAILURE: `computeArea` is not working');
	}
}
testComputeArea();

isDivisible.js

// Is Divisible
function isDivisible(divisee, divisor) {
	if (divisee % divisor === 0) {
		return true;
	}
	else {
		return false;
	}
}

// Tests
function testIsDivisible() {
  if (isDivisible(10, 2) && !isDivisible(11, 2)) {
    console.log('SUCCESS: `isDivisible` is working');
  }
  else {
    console.log('FAILURE: `isDivisible` is not working');
  }
}

testIsDivisible();

temperatureConversion.js

// Temperature Conversion

// C --> F
function celsToFahr(celsTemp) {
	return Math.floor(celsTemp * (9/5) + 32);
}

// F --> C
function fahrToCels(fahrTemp) {
	return Math.floor((fahrTemp - 32) * (5/9));
}

// Tests
function testConversion(fn, input, expected) {
  if (fn(input) === expected) {
    console.log('SUCCESS: `' + fn.name + '` is working');
    return true;
  }
  else {
    console.log('FAILURE: `' + fn.name + '` is not working');
    return false;
  }
}

function testConverters() {
  var cel2FahrInput = 100;
  var cel2FahrExpect = 212;
  var fahr2CelInput = 32;
  var fahr2CelExpect = 0;
  
  if (testConversion(celsToFahr, cel2FahrInput, cel2FahrExpect) &&
     testConversion(fahrToCels, fahr2CelInput, fahr2CelExpect)) {
    console.log('SUCCESS: All tests passing');
  }
  else {
    console.log('FAILURE: Some tests are failing');
  }
}

testConverters();