lightweight variant (#1)

Reviewed-on: #1 Co-authored-by: Aleksandr Neychev <alexnejchev73@gmail.com>
2026-08-12 13:37:30 +00:00
parent a0d3098fe4
commit 55ac8e6556
147 changed files with 4055 additions and 2349 deletions
@@ -0,0 +1,76 @@
+using System.Globalization;
+using CursorLang.Core.Models;
+
+namespace CursorLang.Core.Tests.Models;
+
+public sealed class KeyboardLayoutTests
+{
+    [Theory]
+    [InlineData(0x0409, "EN")]
+    [InlineData(0x0419, "RU")]
+    [InlineData(0x040C, "FR")]
+    [InlineData(0x0407, "DE")]
+    public void The_short_name_comes_from_the_language_code(int localeId, string expected)
+    {
+        KeyboardLayout layout = KeyboardLayout.FromLocaleId(localeId);
+
+        Assert.Equal(expected, layout.ShortName);
+        Assert.Equal(localeId, layout.LocaleId);
+    }
+
+    [Fact]
+    public void The_full_name_joins_the_short_name_and_the_native_language_name()
+    {
+        KeyboardLayout layout = KeyboardLayout.FromLocaleId(0x0419);
+
+        Assert.Equal($"RU — {new CultureInfo(0x0419).NativeName}", layout.DisplayName);
+    }
+
+    // A layout may belong to a language the system does not know — that is not an error
+    [Fact]
+    public void An_unknown_locale_is_shown_by_its_own_code()
+    {
+        int unknown = FindUnknownLocaleId();
+
+        KeyboardLayout layout = KeyboardLayout.FromLocaleId(unknown);
+
+        string expected = $"0x{unknown:X4}";
+        Assert.Equal(expected, layout.ShortName);
+        Assert.Equal(expected, layout.DisplayName);
+    }
+
+    [Fact]
+    public void Layouts_of_the_same_locale_are_equal()
+    {
+        Assert.Equal(KeyboardLayout.FromLocaleId(0x0409), KeyboardLayout.FromLocaleId(0x0409));
+        Assert.NotEqual(KeyboardLayout.FromLocaleId(0x0409), KeyboardLayout.FromLocaleId(0x0419));
+    }
+
+    [Fact]
+    public void A_layout_can_also_be_built_directly()
+    {
+        var layout = new KeyboardLayout(1, "XX", "XX — language");
+
+        Assert.Equal(1, layout.LocaleId);
+        Assert.Equal("XX", layout.ShortName);
+        Assert.Equal("XX — language", layout.DisplayName);
+    }
+
+    // An identifier with no culture behind it in Windows
+    private static int FindUnknownLocaleId()
+    {
+        for (int candidate = 0x1000; candidate <= 0xFFFF; candidate++)
+        {
+            try
+            {
+                _ = new CultureInfo(candidate);
+            }
+            catch (CultureNotFoundException)
+            {
+                return candidate;
+            }
+        }
+
+        throw new InvalidOperationException("The system knows every locale identifier");
+    }
+}