Fix LinearGradientMode parameter validation to match corefx (#5672)

[mono.git] / mcs / class / System.Drawing / Test / System.Drawing.Drawing2D / LinearGradientBrushTest.cs

diff --git a/mcs/class/System.Drawing/Test/System.Drawing.Drawing2D/LinearGradientBrushTest.cs b/mcs/class/System.Drawing/Test/System.Drawing.Drawing2D/LinearGradientBrushTest.cs
index 937c9ebbc792cae616e995b0e53c62cfb8248d3d..ebf1f86e98c011afcb83248fff95483c59b9ce40 100644 (file)
--- a/mcs/class/System.Drawing/Test/System.Drawing.Drawing2D/LinearGradientBrushTest.cs
+++ b/mcs/class/System.Drawing/Test/System.Drawing.Drawing2D/LinearGradientBrushTest.cs
@@ -324,6 +324,42 @@ namespace MonoTests.System.Drawing.Drawing2D {
                        Assert.AreEqual (32, elements[5], 0.0001, "matrix.5");
                }
 
+               [Test]
+               public void Constructor_Rectangle_InvalidWidthHeight ()
+               {
+                       var emptyWidth = new Rectangle (0, 0, 0, 1);
+                       var emptyHeight = new Rectangle (0, 0, 0, 1);
+
+                       Assert.Throws<ArgumentException>(() => new LinearGradientBrush (emptyWidth, Color.Empty, Color.Empty, 1));
+                       Assert.Throws<ArgumentException>(() => new LinearGradientBrush (emptyHeight, Color.Empty, Color.Empty, 1));
+                       Assert.Throws<ArgumentException>(() => new LinearGradientBrush (emptyWidth, Color.Empty, Color.Empty, LinearGradientMode.BackwardDiagonal));
+                       Assert.Throws<ArgumentException>(() => new LinearGradientBrush (emptyHeight, Color.Empty, Color.Empty, LinearGradientMode.BackwardDiagonal));
+               }
+
+               [Test]
+               public void Constructor_RectangleF_InvalidWidthHeight ()
+               {
+                       var emptyWidth = new RectangleF (0, 0, 0, 1);
+                       var emptyHeight = new RectangleF (0, 0, 0, 1);
+
+                       Assert.Throws<ArgumentException>(() => new LinearGradientBrush (emptyWidth, Color.Empty, Color.Empty, 1));
+                       Assert.Throws<ArgumentException>(() => new LinearGradientBrush (emptyHeight, Color.Empty, Color.Empty, 1));
+                       Assert.Throws<ArgumentException>(() => new LinearGradientBrush (emptyWidth, Color.Empty, Color.Empty, LinearGradientMode.BackwardDiagonal));
+                       Assert.Throws<ArgumentException>(() => new LinearGradientBrush (emptyHeight, Color.Empty, Color.Empty, LinearGradientMode.BackwardDiagonal));
+               }
+
+               [Test]
+               public void Constructor_LinearGradientMode_InvalidMode ()
+               {
+                       var rect = new Rectangle (0, 0, 1, 1);
+                       var rectf = new RectangleF (0, 0, 1, 1);
+
+                       Assert.Throws<InvalidEnumArgumentException>(() => new LinearGradientBrush (rect, Color.Empty, Color.Empty, LinearGradientMode.Horizontal - 1));
+                       Assert.Throws<InvalidEnumArgumentException>(() => new LinearGradientBrush (rectf, Color.Empty, Color.Empty, LinearGradientMode.Horizontal - 1));
+                       Assert.Throws<InvalidEnumArgumentException>(() => new LinearGradientBrush (rect, Color.Empty, Color.Empty, LinearGradientMode.BackwardDiagonal + 1));
+                       Assert.Throws<InvalidEnumArgumentException>(() => new LinearGradientBrush (rectf, Color.Empty, Color.Empty, LinearGradientMode.BackwardDiagonal + 1));
+               }
+
                [Test]
                public void InterpolationColors_Colors_InvalidBlend ()
                {