1  // Copyright (c) Microsoft Corporation
 2  // The Microsoft Corporation licenses this file to you under the MIT license.
 3  // See the LICENSE file in the project root for more information.
 4  
 5  using AdvancedPaste.Converters;
 6  using Microsoft.VisualStudio.TestTools.UnitTesting;
 7  using Windows.UI;
 8  
 9  namespace AdvancedPaste.UnitTests.ConvertersTests;
10  
11  [TestClass]
12  public sealed class HexColorToColorConverterTests
13  {
14      [TestMethod]
15      public void TestConvert_ValidSixDigitHex_ReturnsColor()
16      {
17          Color? result = HexColorConverterHelper.ConvertHexColorToRgb("#FFBFAB");
18          Assert.IsNotNull(result);
19  
20          var color = (Windows.UI.Color)result;
21          Assert.AreEqual(255, color.R);
22          Assert.AreEqual(191, color.G);
23          Assert.AreEqual(171, color.B);
24          Assert.AreEqual(255, color.A);
25      }
26  
27      [TestMethod]
28      public void TestConvert_ValidThreeDigitHex_ReturnsColor()
29      {
30          Color? result = HexColorConverterHelper.ConvertHexColorToRgb("#abc");
31          Assert.IsNotNull(result);
32  
33          var color = (Windows.UI.Color)result;
34  
35          // #abc should expand to #aabbcc
36          Assert.AreEqual(170, color.R); // 0xaa
37          Assert.AreEqual(187, color.G); // 0xbb
38          Assert.AreEqual(204, color.B); // 0xcc
39          Assert.AreEqual(255, color.A);
40      }
41  
42      [TestMethod]
43      public void TestConvert_NullOrEmpty_ReturnsNull()
44      {
45          Assert.IsNull(HexColorConverterHelper.ConvertHexColorToRgb(null));
46          Assert.IsNull(HexColorConverterHelper.ConvertHexColorToRgb(string.Empty));
47          Assert.IsNull(HexColorConverterHelper.ConvertHexColorToRgb("   "));
48      }
49  
50      [TestMethod]
51      public void TestConvert_InvalidHex_ReturnsNull()
52      {
53          Assert.IsNull(HexColorConverterHelper.ConvertHexColorToRgb("#GGGGGG"));
54          Assert.IsNull(HexColorConverterHelper.ConvertHexColorToRgb("#12345"));
55      }
56  }