SizeTests.cs

using NUnit.Framework;


namespace Xamarin.Forms.Core.UnitTests
{
	[TestFixture]
	public class SizeTests : BaseTestFixture
	{
		[Test]
		public void TestSizeIsZero ()
		{
			var size = new Size ();

			Assert.True (size.IsZero);

			size = new Size (10, 10);

			Assert.False (size.IsZero);
		}

		[Test]
		public void TestSizeAdd ()
		{
			var size1 = new Size (10, 10);
			var size2 = new Size (20, 20);

			var result = size1 + size2;

			Assert.AreEqual (new Size (30, 30), result);
		}

		[Test]
		public void TestSizeSubtract ()
		{
			var size1 = new Size (10, 10);
			var size2 = new Size (2, 2);

			var result = size1 - size2;

			Assert.AreEqual (new Size (8, 8), result);
		}

		[Test]
		public void TestPointFromSize ([Range(0, 2)] double x, [Range(0, 2)] double y)
		{
			var size = new Size (x, y);
			var point = (Point) size;

			Assert.AreEqual (x, point.X);
			Assert.AreEqual (y, point.Y);
		}

		[Test]
		public void HashCode ([Range(3, 5)] double w1, [Range(3, 5)] double h1, [Range(3, 5)] double w2, [Range(3, 5)] double h2)
		{
			bool result = new Size (w1, h1).GetHashCode () == new Size (w2, h2).GetHashCode ();

			if (w1 == w2 && h1 == h2)
				Assert.True (result);
			else
				Assert.False (result);
		}

		[Test]
		public void Equality ()
		{
			Assert.False (new Size ().Equals (null));
			Assert.False (new Size ().Equals ("Size"));
			Assert.True (new Size (2, 3).Equals (new Size (2, 3)));

			Assert.True (new Size (2, 3) == new Size (2, 3));
			Assert.True (new Size (2, 3) != new Size (3, 2));
		}

		[Test]
		[TestCase(0, 0, ExpectedResult = "{Width=0 Height=0}")]
		[TestCase(1, 5, ExpectedResult = "{Width=1 Height=5}")]
		public string TestToString (double w, double h)
		{
			return new Size (w, h).ToString ();
		}

		[Test]
		public void MultiplyByScalar ([Range (12, 15)] int w, [Range (12, 15)] int h, [Values (0.0, 2.0, 7.0, 0.25)] double scalar)
		{
			var size = new Size (w, h);
			var result = size * scalar;

			Assert.AreEqual (w * scalar, result.Width);
			Assert.AreEqual (h * scalar, result.Height);
		}
	}
}