Initial import

1 files changed, 194 insertions, 0 deletions

diff --git a/Xamarin.Forms.Core.UnitTests/ToolbarTrackerTests.cs b/Xamarin.Forms.Core.UnitTests/ToolbarTrackerTests.cs
new file mode 100644
index 00000000..32155be3
--- /dev/null
+++ b/Xamarin.Forms.Core.UnitTests/ToolbarTrackerTests.cs
@@ -0,0 +1,194 @@
+using System.Linq;
+using System.Threading.Tasks;
+using NUnit.Framework;
+
+namespace Xamarin.Forms.Core.UnitTests
+{
+	[TestFixture]
+	internal class ToolbarTrackerTests : BaseTestFixture
+	{
+		[Test]
+		public void Constructor ()
+		{
+			var tracker = new ToolbarTracker ();
+			Assert.Null (tracker.Target);
+			Assert.False (tracker.ToolbarItems.Any ());
+		}
+
+		[Test]
+		public void SimpleTrackEmpty ()
+		{
+			var tracker = new ToolbarTracker ();
+
+			var page = new ContentPage ();
+			tracker.Target = page;
+
+			Assert.False (tracker.ToolbarItems.Any ());
+		}
+
+		[Test]
+		public void SimpleTrackWithItems ()
+		{
+			var tracker = new ToolbarTracker ();
+
+			ToolbarItem item1, item2;
+			var page = new ContentPage {
+				ToolbarItems = {
+					new ToolbarItem ("Foo", "Foo.png", () => {}),
+					new ToolbarItem ("Bar", "Bar.png", () => {})
+				}
+			};
+			tracker.Target = page;
+
+			Assert.True (tracker.ToolbarItems.Contains (page.ToolbarItems[0]));
+			Assert.True (tracker.ToolbarItems.Contains (page.ToolbarItems[1]));
+		}
+
+		[Test]
+		public void TrackPreConstructedTabbedPage ()
+		{
+			var tracker = new ToolbarTracker ();
+
+			var toolbarItem1 = new ToolbarItem ("Foo", "Foo.png", () => { });
+			var toolbarItem2 = new ToolbarItem ("Foo", "Foo.png", () => { });
+			var toolbarItem3 = new ToolbarItem ("Foo", "Foo.png", () => { });
+
+			var subPage1 = new ContentPage {
+				ToolbarItems = {toolbarItem1}
+			};
+
+			var subPage2 = new ContentPage {
+				ToolbarItems = {toolbarItem2, toolbarItem3}
+			};
+
+			var tabbedpage = new TabbedPage {
+				Children = {
+					subPage1,
+					subPage2
+				}
+			};
+
+			tabbedpage.CurrentPage = subPage1;
+
+			tracker.Target = tabbedpage;
+
+			Assert.True (tracker.ToolbarItems.Count () == 1);
+			Assert.True (tracker.ToolbarItems.First () == subPage1.ToolbarItems[0]);
+
+			bool changed = false;
+			tracker.CollectionChanged += (sender, args) => changed = true;
+
+			tabbedpage.CurrentPage = subPage2;
+
+			Assert.True (tracker.ToolbarItems.Count () == 2);
+			Assert.True (tracker.ToolbarItems.First () == subPage2.ToolbarItems[0]);
+			Assert.True (tracker.ToolbarItems.Last () == subPage2.ToolbarItems[1]);
+		}
+
+		[Test]
+		public void AdditionalTargets ()
+		{
+			var tracker = new ToolbarTracker ();
+
+			var toolbarItem1 = new ToolbarItem ("Foo", "Foo.png", () => { });
+			var toolbarItem2 = new ToolbarItem ("Foo", "Foo.png", () => { });
+
+			var page = new ContentPage {
+				ToolbarItems = {
+					toolbarItem1
+				}
+			};
+
+			var additionalPage = new ContentPage {
+				ToolbarItems = {toolbarItem2}
+			};
+
+			tracker.Target = page;
+			tracker.AdditionalTargets = new[] {additionalPage};
+
+			Assert.True (tracker.ToolbarItems.Contains (toolbarItem1));
+			Assert.True (tracker.ToolbarItems.Contains (toolbarItem2));
+		}
+
+		[Test]
+		public async Task PushAfterTrackingStarted ()
+		{
+			var tracker = new ToolbarTracker ();
+
+			var toolbarItem1 = new ToolbarItem ("Foo", "Foo.png", () => { });
+			var toolbarItem2 = new ToolbarItem ("Foo", "Foo.png", () => { });
+
+			var page = new NavigationPage {
+				ToolbarItems = {
+					toolbarItem1
+				}
+			};
+
+			var firstPage = new ContentPage {
+				ToolbarItems = { toolbarItem2 }
+			};
+
+			tracker.Target = page;
+
+			Assert.True (tracker.ToolbarItems.Contains (toolbarItem1));
+			Assert.False (tracker.ToolbarItems.Contains (toolbarItem2));
+
+			await page.Navigation.PushAsync (firstPage);
+
+			Assert.True (tracker.ToolbarItems.Contains (toolbarItem1));
+			Assert.True (tracker.ToolbarItems.Contains (toolbarItem2));
+		}
+
+		[Test]
+		public async Task PopAfterTrackingStarted ()
+		{
+			var tracker = new ToolbarTracker ();
+
+			var toolbarItem1 = new ToolbarItem ("Foo", "Foo.png", () => { });
+			var toolbarItem2 = new ToolbarItem ("Foo", "Foo.png", () => { });
+
+			var page = new NavigationPage (new ContentPage ()) {
+				ToolbarItems = {
+					toolbarItem1
+				}
+			};
+
+			var firstPage = new ContentPage {
+				ToolbarItems = { toolbarItem2 }
+			};
+
+			tracker.Target = page;
+
+			await page.Navigation.PushAsync (firstPage);
+
+			Assert.True (tracker.ToolbarItems.Contains (toolbarItem1));
+			Assert.True (tracker.ToolbarItems.Contains (toolbarItem2));
+
+			await page.Navigation.PopAsync ();
+
+			Assert.True (tracker.ToolbarItems.Contains (toolbarItem1));
+			Assert.False (tracker.ToolbarItems.Contains (toolbarItem2));
+		}
+
+		[Test]
+		public void UnsetTarget ()
+		{
+			var tracker = new ToolbarTracker ();
+
+			ToolbarItem item1, item2;
+			var page = new ContentPage {
+				ToolbarItems = {
+					new ToolbarItem ("Foo", "Foo.png", () => {}),
+					new ToolbarItem ("Bar", "Bar.png", () => {})
+				}
+			};
+			tracker.Target = page;
+
+			Assert.True (tracker.ToolbarItems.Count () == 2);
+
+			tracker.Target = null;
+
+			Assert.False (tracker.ToolbarItems.Any ());
+		}
+	}
+}