Code files

Chapter02/publishing-a-module/hsl-to-hex/test/index.js

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+var hsl = require('../')
+var test = require('tap').test
+
+test('pure white', function (assert) {
+  var expected = '#ffffff'
+  var actual = hsl(0, 100, 100)
+  var it = 'max saturation and luminosity should return pure white'
+  assert.is(actual, expected, it)
+  assert.end()
+})
+
+test('medium gray', function (assert) {
+  var expected = '#808080'
+  var actual = hsl(0, 0, 50)
+  var it = '0% saturation, 50% luminosity should be medium gray'
+  assert.is(actual, expected, it)
+  assert.end()
+})
+
+test('hue - red', function (assert) {
+  var expected = '#ff0000'
+  var actual = hsl(0, 100, 50)
+  var it = '0deg should be red'
+  assert.is(actual, expected, it)
+  assert.end()
+})
+
+test('hue - blue', function (assert) {
+  var expected = '#0000ff'
+  var actual = hsl(240, 100, 50)
+  var it = '240deg should be blue'
+  assert.is(actual, expected, it)
+  assert.end()
+})
+
+test('hue - cyan', function (assert) {
+  var expected = '#00ffff'
+  var actual = hsl(180, 100, 50)
+  var it = '180deg should be cyan'
+  assert.is(actual, expected, it)
+  assert.end()
+})
+
+test('degree overflow', function (assert) {
+  var expected = hsl(1, 100, 50)
+  var actual = hsl(361, 100, 50)
+  var it = '361deg should be the same as 1deg'
+  assert.is(actual, expected, it)
+  assert.end()
+})
+
+test('degree underflow', function (assert) {
+  var expected = hsl(-1, 100, 50)
+  var actual = hsl(359, 100, 50)
+  var it = '-1deg should be the same as 359deg'
+  assert.is(actual, expected, it)
+  assert.end()
+})
+
+test('max constraint', function (assert) {
+  var expected = hsl(0, 101, 50)
+  var actual = hsl(0, 100, 50)
+  var it = '101% should be the same as 100%'
+  assert.is(actual, expected, it)
+  assert.end()
+})
+
+test('min constraint', function (assert) {
+  var expected = hsl(0, -1, 50)
+  var actual = hsl(0, 0, 50)
+  var it = '-1% should be the same as 0%'
+  assert.is(actual, expected, it)
+  assert.end()
+})