test: add unit tests for controls and rendering helpers

Add comprehensive test coverage for 20+ Skia controls including ActivityIndicator, Border, CheckBox, CollectionView, DatePicker, Editor, Grid, Image, ImageButton, Label, NavigationPage, Page, Picker, ProgressBar, RadioButton, SearchBar, Stepper, Switch, and TimePicker. Include tests for TextRenderingHelper utility methods covering color conversion, font style mapping, and font family resolution.
2026-03-06 22:43:25 -05:00
parent 077abc2feb
commit c5221ba580
22 changed files with 2717 additions and 2 deletions
--- a/tests/Views/SkiaStepperTests.cs
+++ b/tests/Views/SkiaStepperTests.cs
@@ -0,0 +1,168 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using FluentAssertions;
+using Microsoft.Maui.Graphics;
+using Microsoft.Maui.Platform;
+using SkiaSharp;
+using Xunit;
+
+namespace Microsoft.Maui.Controls.Linux.Tests.Views;
+
+public class SkiaStepperTests
+{
+    [Fact]
+    public void Constructor_SetsDefaultValues()
+    {
+        // Arrange & Act
+        var stepper = new SkiaStepper();
+
+        // Assert
+        stepper.Value.Should().Be(0);
+        stepper.Minimum.Should().Be(0);
+        stepper.Maximum.Should().Be(100);
+        stepper.Increment.Should().Be(1);
+        stepper.IsEnabled.Should().BeTrue();
+        stepper.IsFocusable.Should().BeTrue();
+        stepper.IsMinusPressed.Should().BeFalse();
+        stepper.IsPlusPressed.Should().BeFalse();
+    }
+
+    [Fact]
+    public void Value_WhenSet_UpdatesProperty()
+    {
+        // Arrange
+        var stepper = new SkiaStepper();
+
+        // Act
+        stepper.Value = 50;
+
+        // Assert
+        stepper.Value.Should().Be(50);
+    }
+
+    [Fact]
+    public void Value_ClampsToMinimum()
+    {
+        // Arrange
+        var stepper = new SkiaStepper { Minimum = 0, Maximum = 100 };
+
+        // Act
+        stepper.Value = -10;
+
+        // Assert
+        stepper.Value.Should().Be(0);
+    }
+
+    [Fact]
+    public void Value_ClampsToMaximum()
+    {
+        // Arrange
+        var stepper = new SkiaStepper { Minimum = 0, Maximum = 100 };
+
+        // Act
+        stepper.Value = 150;
+
+        // Assert
+        stepper.Value.Should().Be(100);
+    }
+
+    [Fact]
+    public void Minimum_WhenSet_UpdatesProperty()
+    {
+        // Arrange
+        var stepper = new SkiaStepper();
+
+        // Act
+        stepper.Minimum = 10;
+
+        // Assert
+        stepper.Minimum.Should().Be(10);
+    }
+
+    [Fact]
+    public void Maximum_WhenSet_UpdatesProperty()
+    {
+        // Arrange
+        var stepper = new SkiaStepper();
+
+        // Act
+        stepper.Maximum = 200;
+
+        // Assert
+        stepper.Maximum.Should().Be(200);
+    }
+
+    [Fact]
+    public void Increment_WhenSet_UpdatesProperty()
+    {
+        // Arrange
+        var stepper = new SkiaStepper();
+
+        // Act
+        stepper.Increment = 5;
+
+        // Assert
+        stepper.Increment.Should().Be(5);
+    }
+
+    [Fact]
+    public void ValueChanged_EventCanBeSubscribed()
+    {
+        // Arrange
+        var stepper = new SkiaStepper();
+        var eventRaised = false;
+
+        // Act
+        stepper.ValueChanged += (s, e) => eventRaised = true;
+        stepper.Value = 50;
+
+        // Assert
+        eventRaised.Should().BeTrue();
+    }
+
+    [Fact]
+    public void ValueChanged_EventReportsCorrectValues()
+    {
+        // Arrange
+        var stepper = new SkiaStepper();
+        var eventCount = 0;
+
+        // Act
+        stepper.ValueChanged += (s, e) => eventCount++;
+        stepper.Value = 25;
+        stepper.Value = 75;
+
+        // Assert
+        eventCount.Should().Be(2);
+    }
+
+    [Fact]
+    public void Draw_DoesNotThrow()
+    {
+        // Arrange
+        var stepper = new SkiaStepper { Value = 50 };
+        stepper.Bounds = new Rect(0, 0, 81, 32);
+
+        using var surface = SKSurface.Create(new SKImageInfo(200, 100));
+        var canvas = surface.Canvas;
+
+        // Act & Assert
+        var exception = Record.Exception(() => stepper.Draw(canvas));
+        exception.Should().BeNull();
+    }
+
+    [Fact]
+    public void Measure_ReturnsPositiveSize()
+    {
+        // Arrange
+        var stepper = new SkiaStepper();
+
+        // Act
+        var size = stepper.Measure(new Size(1000, 1000));
+
+        // Assert
+        size.Width.Should().BeGreaterThan(0);
+        size.Height.Should().BeGreaterThan(0);
+    }
+}