Commit ac14219

@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using gorilla.utility;
+using solidware.financials.infrastructure.eventing;
+using solidware.financials.messages;
+
+namespace solidware.financials.windows.ui.presenters
+{
+    public class SingleStockPresenter : TabPresenter, EventSubscriber<CurrentStockPrice>
+    {
+        string symbol_to_watch;
+
+        public SingleStockPresenter(string symbol_to_watch)
+        {
+            this.symbol_to_watch = symbol_to_watch;
+            Chart = new ObservableCollection<KeyValuePair<DateTime, decimal>>();
+        }
+
+        public ICollection<KeyValuePair<DateTime, decimal>> Chart { get; set; }
+
+        public string Header
+        {
+            get { return symbol_to_watch; }
+        }
+
+        public void present()
+        {
+        }
+
+        public void notify(CurrentStockPrice message)
+        {
+            if (symbol_to_watch.Equals(message.Symbol))
+                Chart.Add(new KeyValuePair<DateTime, decimal>(Clock.now(), message.Price));
+        }
+    }
+}
\ No newline at end of file

@@ -114,6 +114,7 @@
     <Compile Include="bootstrappers\ComposeShell.cs" />
     <Compile Include="bootstrappers\ConfigureMappings.cs" />
     <Compile Include="bootstrappers\DefaultMapper.cs" />
+    <Compile Include="presenters\SingleStockPresenter.cs" />
     <Compile Include="RunInBackgroundInterceptor.cs" />
     <Compile Include="bootstrappers\StopEssentialServices.cs" />
     <Compile Include="bootstrappers\WireUpSubscribers.cs" />

@@ -0,0 +1,87 @@
+using System;
+using gorilla.utility;
+using Machine.Specifications;
+using solidware.financials.messages;
+using solidware.financials.windows.ui.presenters;
+
+namespace specs.unit.ui.presenters
+{
+    public class SingleStockPresenterSpecs
+    {
+        [Subject(typeof (SingleStockPresenter))]
+        public abstract class concern
+        {
+            Establish context = () =>
+            {
+                Clock.change_time_provider_to(() => now);
+                sut = new SingleStockPresenter("ARX.TO");
+            };
+
+            Cleanup clean = () =>
+            {
+                Clock.reset();
+            };
+
+            static protected SingleStockPresenter sut;
+            static protected DateTime now = new DateTime(2011, 01, 01);
+        }
+
+        public class when_a_new_price_is_received_for_the_stock_this_chart_is_for : concern
+        {
+            Establish context = () =>
+            {
+                current_price = new CurrentStockPrice
+                                {
+                                    Symbol = "ARX.TO",
+                                    Price = 29.00m
+                                };
+            };
+
+            Because of = () =>
+            {
+                sut.present();
+                sut.notify(current_price);
+            };
+
+            It should_update_the_chart_with_the_new_data_point = () =>
+            {
+                sut.Chart.should_contain(x => x.Key.Equals(now) && x.Value.Equals(29.00m));
+            };
+
+            static CurrentStockPrice current_price;
+        }
+
+        public class when_a_new_price_is_received_for_another_stock : concern
+        {
+            Establish context = () =>
+            {
+                current_price = new CurrentStockPrice
+                                {
+                                    Symbol = "TD.TO",
+                                    Price = 90.00m
+                                };
+            };
+
+            Because of = () =>
+            {
+                sut.present();
+                sut.notify(current_price);
+            };
+
+            It should_not_update_the_chart = () =>
+            {
+                sut.Chart.Count.should_be_equal_to(0);
+            };
+
+            static CurrentStockPrice current_price;
+        }
+
+        public class when_displaying_the_header_for_this_tab : concern
+        {
+            It should_describe_the_stock_that_it_is_for = () =>
+            {
+                sut.Header.should_be_equal_to("ARX.TO");
+            };
+        }
+    }
+}
\ No newline at end of file

@@ -111,6 +111,7 @@
     <Compile Include="unit\ui\presenters\AddNewStockSymbolPresenterSpecs.cs" />
     <Compile Include="IllegalExtensions.cs" />
     <Compile Include="unit\ui\presenters\specifications\IfFamilyMemberIsSelectedSpecs.cs" />
+    <Compile Include="unit\ui\presenters\SingleStockPresenterSpecs.cs" />
     <Compile Include="unit\ui\presenters\StockWatchPresenterSpecs.cs" />
     <Compile Include="unit\ui\RunInBackgroundInterceptorSpecs.cs" />
   </ItemGroup>