Initial import

1 files changed, 114 insertions, 0 deletions

diff --git a/Xamarin.Forms.Core.UnitTests/FormattedStringTests.cs b/Xamarin.Forms.Core.UnitTests/FormattedStringTests.cs
new file mode 100644
index 00000000..7c247bda
--- /dev/null
+++ b/Xamarin.Forms.Core.UnitTests/FormattedStringTests.cs
@@ -0,0 +1,114 @@
+using System;
+using System.Collections.ObjectModel;
+using NUnit.Framework;
+
+namespace Xamarin.Forms.Core.UnitTests
+{
+	[TestFixture]
+	public class FormattedStringTests : BaseTestFixture
+	{
+		[SetUp]
+		public override void Setup ()
+		{
+			base.Setup ();
+			Device.PlatformServices = new MockPlatformServices ();
+		}
+
+		[TearDown]
+		public override void TearDown ()
+		{
+			base.Setup ();
+			Device.PlatformServices = null;
+		}
+
+		[Test]
+		public void NullSpansNotAllowed()
+		{
+			var fs = new FormattedString();
+			Assert.That (() => fs.Spans.Add (null), Throws.InstanceOf<ArgumentNullException>());
+
+			fs = new FormattedString();
+			fs.Spans.Add (new Span());
+
+			Assert.That (() => {
+				fs.Spans[0] = null;
+			}, Throws.InstanceOf<ArgumentNullException>());
+		}
+
+		[Test]
+		public void SpanChangeTriggersSpansPropertyChange()
+		{
+			var span = new Span();
+			var fs = new FormattedString();
+			fs.Spans.Add (span);
+
+			bool spansChanged = false;
+			fs.PropertyChanged += (s, e) => {
+				if (e.PropertyName == "Spans")
+					spansChanged = true;
+			};
+
+			span.Text = "New text";
+
+			Assert.That (spansChanged, Is.True);
+		}
+
+		[Test]
+		public void SpanChangesUnsubscribes()
+		{
+			var span = new Span();
+			var fs = new FormattedString();
+			fs.Spans.Add (span);
+			fs.Spans.Remove (span);
+
+			bool spansChanged = false;
+			fs.PropertyChanged += (s, e) => {
+				if (e.PropertyName == "Spans")
+					spansChanged = true;
+			};
+
+			span.Text = "New text";
+
+			Assert.That (spansChanged, Is.False);
+		}
+
+		[Test]
+		public void AddingSpanTriggersSpansPropertyChange()
+		{
+			var span = new Span();
+			var fs = new FormattedString();
+			
+			bool spansChanged = false;
+			fs.PropertyChanged += (s, e) => {
+				if (e.PropertyName == "Spans")
+					spansChanged = true;
+			};
+
+			fs.Spans.Add (span);
+
+			Assert.That (spansChanged, Is.True);
+		}
+
+		[Test]
+		public void ImplicitStringConversion()
+		{
+			string original = "fubar";
+			FormattedString fs = original;
+			Assert.That (fs, Is.Not.Null);
+			Assert.That (fs.Spans.Count, Is.EqualTo (1));
+			Assert.That (fs.Spans[0], Is.Not.Null);
+			Assert.That (fs.Spans[0].Text, Is.EqualTo (original));
+		}
+
+		[Test]
+		public void ImplicitStringConversionNull()
+		{
+			string original = null;
+			FormattedString fs = original;
+			Assert.That (fs, Is.Not.Null);
+			Assert.That (fs.Spans.Count, Is.EqualTo (1));
+			Assert.That (fs.Spans[0], Is.Not.Null);
+			Assert.That (fs.Spans[0].Text, Is.EqualTo (original));
+		}
+	}
+}
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