Update unit tests to reflect fixed behavior and enhance background rect width protection

Co-authored-by: PaulAndersonS <[email protected]>

Author: Copilot

maui/src/TextInputLayout/SfTextInputLayout.Methods.cs

@@ -1609,14 +1609,14 @@ void UpdateOutlineBackgroundRectF()
 			{
 				_backgroundRectF.X = (float)(_outlineRectF.X + (FocusedStrokeThickness / 2));
 				_backgroundRectF.Y = (float)(_outlineRectF.Y + (FocusedStrokeThickness / 2));
-				_backgroundRectF.Width = (float)(_outlineRectF.Width - (FocusedStrokeThickness));
+				_backgroundRectF.Width = (float)Math.Max(1, _outlineRectF.Width - FocusedStrokeThickness);
 				_backgroundRectF.Height = (float)(_outlineRectF.Height - (FocusedStrokeThickness));
 			}
 			else
 			{
 				_backgroundRectF.X = (float)(_outlineRectF.X + (UnfocusedStrokeThickness / 2));
 				_backgroundRectF.Y = (float)(_outlineRectF.Y + (UnfocusedStrokeThickness / 2));
-				_backgroundRectF.Width = (float)(_outlineRectF.Width - (UnfocusedStrokeThickness));
+				_backgroundRectF.Width = (float)Math.Max(1, _outlineRectF.Width - UnfocusedStrokeThickness);
 				_backgroundRectF.Height = (float)(_outlineRectF.Height - (UnfocusedStrokeThickness));
 			}
 

maui/tests/Syncfusion.Maui.Toolkit.UnitTest/Layout/SfTextInputLayoutUnitTests.cs

@@ -715,12 +715,12 @@ public void TestUpdateIconRectFMethod()
 				TrailingViewPosition = ViewPosition.Outside
 			};
 			InvokePrivateMethod(inputLayout, "UpdateIconRectF");
-			var outRectExpected = new RectF() { X = 21, Y = 2, Width = -43, Height = -24 };
+			var outRectExpected = new RectF() { X = 21, Y = 2, Width = 1, Height = -24 };
 			var resultOutRect = GetPrivateField(inputLayout, "_outlineRectF");
-			Assert.Equal(resultOutRect, outRectExpected);
-			var backgroundRectExpected = new RectF() { X = 19, Y = 0, Width = -39, Height = -22 };
+			Assert.Equal(outRectExpected, resultOutRect);
+			var backgroundRectExpected = new RectF() { X = 19, Y = 0, Width = 1, Height = -22 };
 			var resultBackgroundRect = GetPrivateField(inputLayout, "_backgroundRectF");
-			Assert.Equal(resultBackgroundRect, backgroundRectExpected);
+			Assert.Equal(backgroundRectExpected, resultBackgroundRect);
 			var _passwordToggleIconRectF = new RectF() { X = -83, Y = -27, Width = 32, Height = 32 };
 			var resultPassToggleRect = GetPrivateField(inputLayout, "_passwordToggleIconRectF");
 			Assert.Equal(resultPassToggleRect, _passwordToggleIconRectF);
@@ -816,7 +816,7 @@ public void TestUpdateHelperTextPositionMethod()
 				TrailingView = new Entry(),
 				TrailingViewPosition = ViewPosition.Outside
 			};
-			var expected = new RectF() { X = 60, Y = -18, Width = -96, Height = 16 };
+			var expected = new RectF() { X = 60, Y = -18, Width = 1, Height = 16 };
 			InvokePrivateMethod(inputLayout, "UpdateHelperTextPosition");
 			var result = GetPrivateField(inputLayout, "_helperTextRect");
 			Assert.Equal(expected, result);
@@ -873,7 +873,7 @@ public void TestUpdateErrorTextPositionMethod()
 		{
 			var inputLayout = new SfTextInputLayout();
 			InvokePrivateMethod(inputLayout, "UpdateErrorTextPosition");
-			RectF expectedRect = new RectF() { X = 16, Y = -18, Width = -33, Height = 16 };
+			RectF expectedRect = new RectF() { X = 16, Y = -18, Width = 1, Height = 16 };
 			var result = GetPrivateField(inputLayout, "_errorTextRect");
 			Assert.Equal(expectedRect, result);
 		}