test: add self-tests for rgb to hsl conversion algorithm

Author: piyushk77

Conversions/test/RgbHslConversion.test.js

@@ -0,0 +1,43 @@
+import { rgbToHsl } from '../RgbHslConversion'
+describe('RgbHslConversion', () => {
+  const testCases = [
+    [
+      [215, 19, 180],
+      [311, 84, 46]
+    ],
+    [
+      [21, 190, 18],
+      [119, 83, 41]
+    ],
+    [
+      [80, 100, 160],
+      [225, 33, 47]
+    ],
+    [
+      [80, 1, 16],
+      [349, 98, 16]
+    ],
+    [
+      [8, 20, 0],
+      [96, 100, 4]
+    ],
+    [
+      [0, 0, 0],
+      [0, 0, 0]
+    ],
+    [
+      [255, 255, 255],
+      [0, 0, 100]
+    ],
+    [[256, 180, 9], 'Input is not a valid RGB color.'],
+    [[-90, 46, 8], 'Input is not a valid RGB color.'],
+    [[1, 39, 900], 'Input is not a valid RGB color.']
+  ]
+
+  test.each(testCases)(
+    'Should return the color in HSL format.',
+    (colorRgb, expected) => {
+      expect(rgbToHsl(colorRgb)).toEqual(expected)
+    }
+  )
+})