null&false

Author: v-chaowendy

src/System.Windows.Forms/tests/UnitTests/System/Windows/Forms/FocusableLabelTests.cs

@@ -3,20 +3,53 @@
 
 #nullable enable
 
+using System.Reflection;
+
 namespace System.Windows.Forms;
 
 public class FocusableLabelTests
 {
     [Fact]
-    public void UnderlineWhenFocused_DefaultValue_ShouldBeTrue()
+    public void UnderlineWhenFocused_ShouldBeTrue()
     {
         using FocusableLabel label = new();
 
         label.UnderlineWhenFocused.Should().BeTrue();
     }
 
     [Fact]
-    public void FocusableLabel_ShouldBeSelectableAndTabStop()
+    public void UnderlineWhenFocused_SetToFalse_ShouldBeFalse()
+    {
+        using FocusableLabel label = new();
+
+        label.UnderlineWhenFocused = false;
+
+        label.UnderlineWhenFocused.Should().BeFalse();
+    }
+
+    [Fact]
+    public void CreateParams_ClassName_ShouldBeNull()
+    {
+        using FocusableLabel label = new();
+
+        var createParams = GetCreateParams(label);
+
+        createParams.Should().NotBeNull();
+
+        var className = createParams?.GetType().GetProperty("ClassName")?.GetValue(createParams);
+
+        className.Should().BeNull();
+    }
+
+    private static object? GetCreateParams(Control control)
+    {
+        return typeof(Control)
+        .GetProperty("CreateParams", BindingFlags.NonPublic | BindingFlags.Instance)?
+        .GetValue(control);
+    }
+
+    [Fact]
+    public void TabStop_ShouldBeTrue()
     {
         using FocusableLabel label = new();