start flowing a well into a facility.

7 files changed, 249 insertions, 160 deletions

diff --git a/src/domain/GasPlant.cs b/src/domain/GasPlant.cs
index f8b2b00..30587d5 100644
--- a/src/domain/GasPlant.cs
+++ b/src/domain/GasPlant.cs
@@ -5,7 +5,12 @@ namespace domain
   using System.Collections.Generic;
   using utility;
 
-  public class GasPlant
+  public interface IFacility 
+  {
+    void AcceptFlowFrom(IWell well);
+  }
+
+  public class GasPlant : IFacility
   {
     IList<IWell> wells;
     Capacity capacity;
diff --git a/src/domain/TypeCurve.cs b/src/domain/TypeCurve.cs
index ba3d954..c5c0f52 100644
--- a/src/domain/TypeCurve.cs
+++ b/src/domain/TypeCurve.cs
@@ -7,6 +7,8 @@ namespace domain
   {
     IEnumerable<Production> production;
 
+    protected TypeCurve() { }
+
     public TypeCurve(IEnumerable<Production> production)
     {
       this.production = production.ToList();
diff --git a/src/domain/Well.cs b/src/domain/Well.cs
index 498a3f9..835e8b2 100644
--- a/src/domain/Well.cs
+++ b/src/domain/Well.cs
@@ -10,6 +10,7 @@ namespace domain
     Month initialProductionMonth;
     Percent workingInterest;
     TypeCurve curve;
+    IFacility facility;
 
     public Well(Month initialProductionMonth, Percent workingInterest, TypeCurve curve)
     {
@@ -27,11 +28,24 @@ namespace domain
     {
       return workingInterest.Reduce(GrossProductionFor<Commodity>(month));
     }
+
+    public void FlowInto(IFacility facility)
+    {
+      ensure_that_this_well_is_not_already_flowing_into_a_plant();
+      this.facility = facility;
+      facility.AcceptFlowFrom(this);
+    }
+
+    void ensure_that_this_well_is_not_already_flowing_into_a_plant()
+    {
+      if(null != this.facility) throw new Exception();
+    }
   }
 
   public interface IWell
   {
     IQuantity GrossProductionFor<Commodity>(Month month) where Commodity : ICommodity, new();
     IQuantity NetProductionFor<Commodity>(Month month) where Commodity : ICommodity, new();
+    void FlowInto(IFacility facility);
   }
 }
diff --git a/src/domain/domain.csproj b/src/domain/domain.csproj
index 21727d3..29ff5e2 100755
--- a/src/domain/domain.csproj
+++ b/src/domain/domain.csproj
@@ -1,79 +1,79 @@
-<?xml version="1.0" encoding="utf-8"?>

-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

-  <PropertyGroup>

-    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>

-    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>

-    <ProductVersion>8.0.30703</ProductVersion>

-    <SchemaVersion>2.0</SchemaVersion>

-    <ProjectGuid>{4E400E9B-C985-49D3-BD7F-2C1D1022ECED}</ProjectGuid>

-    <OutputType>Library</OutputType>

-    <AppDesignerFolder>Properties</AppDesignerFolder>

-    <RootNamespace>domain</RootNamespace>

-    <AssemblyName>domain</AssemblyName>

-    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>

-    <FileAlignment>512</FileAlignment>

-  </PropertyGroup>

-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

-    <DebugSymbols>true</DebugSymbols>

-    <DebugType>full</DebugType>

-    <Optimize>false</Optimize>

-    <OutputPath>bin\Debug\</OutputPath>

-    <DefineConstants>DEBUG;TRACE</DefineConstants>

-    <ErrorReport>prompt</ErrorReport>

-    <WarningLevel>4</WarningLevel>

-  </PropertyGroup>

-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

-    <DebugType>pdbonly</DebugType>

-    <Optimize>true</Optimize>

-    <OutputPath>bin\Release\</OutputPath>

-    <DefineConstants>TRACE</DefineConstants>

-    <ErrorReport>prompt</ErrorReport>

-    <WarningLevel>4</WarningLevel>

-  </PropertyGroup>

-  <ItemGroup>

-    <Reference Include="System" />

-    <Reference Include="System.Core" />

-    <Reference Include="System.Xml.Linq" />

-    <Reference Include="System.Data.DataSetExtensions" Condition=" '$(OS)' == 'Windows_NT' " />

-    <Reference Include="Microsoft.CSharp" Condition=" '$(OS)' == 'Windows_NT' " />

-    <Reference Include="System.Data" />

-    <Reference Include="System.Xml" />

-  </ItemGroup>

-  <ItemGroup>

-    <Compile Include="Greeting.cs" />

-    <Compile Include="BOED.cs" />

-    <Compile Include="Clock.cs" />

-    <Compile Include="Capacity.cs" />

-    <Compile Include="Commodity.cs" />

-    <Compile Include="CommoditySplits.cs" />

-    <Compile Include="DeclineCurve.cs" />

-    <Compile Include="EstimatedNetProductionFor.cs" />

-    <Compile Include="GasPlant.cs" />

-    <Compile Include="MCF.cs" />

-    <Compile Include="Month.cs" />

-    <Compile Include="Months.cs" />

-    <Compile Include="Oppurtunity.cs" />

-    <Compile Include="Percent.cs" />

-    <Compile Include="Production.cs" />

-    <Compile Include="ProductionSchedule.cs" />

-    <Compile Include="Quantity.cs" />

-    <Compile Include="Range.cs" />

-    <Compile Include="Summation.cs" />

-    <Compile Include="TypeCurve.cs" />

-    <Compile Include="Units.cs" />

-    <Compile Include="Well.cs" />

-    <Compile Include="IUnitOfMeasure.cs" />

-    <Compile Include="utility\IVisitor.cs" />

-    <Compile Include="utility\iterating.cs" />

-    <Compile Include="Properties\AssemblyInfo.cs" />

-  </ItemGroup>

-  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" Condition=" '$(OS)' == 'Windows_NT' " />

-  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets"/>

-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

-       Other similar extension points exist, see Microsoft.Common.targets.

-  <Target Name="BeforeBuild">

-  </Target>

-  <Target Name="AfterBuild">

-  </Target>

-  -->

-</Project>

+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{4E400E9B-C985-49D3-BD7F-2C1D1022ECED}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>domain</RootNamespace>
+    <AssemblyName>domain</AssemblyName>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" Condition=" '$(OS)' == 'Windows_NT' " />
+    <Reference Include="Microsoft.CSharp" Condition=" '$(OS)' == 'Windows_NT' " />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Greeting.cs" />
+    <Compile Include="BOED.cs" />
+    <Compile Include="Clock.cs" />
+    <Compile Include="Capacity.cs" />
+    <Compile Include="Commodity.cs" />
+    <Compile Include="CommoditySplits.cs" />
+    <Compile Include="DeclineCurve.cs" />
+    <Compile Include="EstimatedNetProductionFor.cs" />
+    <Compile Include="GasPlant.cs" />
+    <Compile Include="MCF.cs" />
+    <Compile Include="Month.cs" />
+    <Compile Include="Months.cs" />
+    <Compile Include="Oppurtunity.cs" />
+    <Compile Include="Percent.cs" />
+    <Compile Include="Production.cs" />
+    <Compile Include="ProductionSchedule.cs" />
+    <Compile Include="Quantity.cs" />
+    <Compile Include="Range.cs" />
+    <Compile Include="Summation.cs" />
+    <Compile Include="TypeCurve.cs" />
+    <Compile Include="Units.cs" />
+    <Compile Include="Well.cs" />
+    <Compile Include="IUnitOfMeasure.cs" />
+    <Compile Include="utility\IVisitor.cs" />
+    <Compile Include="utility\iterating.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" Condition=" '$(OS)' == 'Windows_NT' " />
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets"/>
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>
diff --git a/src/test/Mock.cs b/src/test/Mock.cs
index bcee615..b4caf04 100644
--- a/src/test/Mock.cs
+++ b/src/test/Mock.cs
@@ -9,4 +9,11 @@ namespace test
       return MockRepository.GenerateMock<T>();
     }
   }
+  public static class Assertsions
+  {
+    public static void received<T>(this T mock,System.Action<T> action)
+    {
+      mock.AssertWasCalled(action);
+    }
+  }
 }
diff --git a/src/test/WellSpecs.cs b/src/test/WellSpecs.cs
new file mode 100644
index 0000000..4b22d59
--- /dev/null
+++ b/src/test/WellSpecs.cs
@@ -0,0 +1,60 @@
+namespace test
+{
+  using Machine.Specifications;
+  using domain;
+  using System;
+
+  public class WellSpecs
+  {
+    Establish context = () =>
+    {
+      var typeCurve = Mock.An<TypeCurve>();
+      sut = new Well(Month.Now(), 100m.Percent(), typeCurve );
+    };
+    static IWell sut;
+
+    public class when_flowing_a_gas_well_into_a_gas_plant
+    {
+      Establish context = ()=>
+      {
+        gasPlant = Mock.An<IFacility>();
+      };
+
+      static IFacility gasPlant;
+
+      public class when_the_plant_has_enough_capacity_to_accept_flow
+      {
+        It should_attempt_to_flow_in_to_the_plant=()=>
+        {
+          gasPlant.received(x => x.AcceptFlowFrom(sut));
+        };
+
+        Because of = ()=>
+        {
+          sut.FlowInto(gasPlant);
+        };
+      }
+
+      public class when_a_well_is_already_flowing_into_a_facility 
+      {
+        It should_not_allow_you_to_flow_into_another_plant=()=>
+        {
+          exception.ShouldNotBeNull();
+        };
+        Establish context = ()=>
+        {
+          otherFacility = Mock.An<IFacility>();
+        };
+
+        Because of = ()=>
+        {
+          sut.FlowInto(gasPlant);
+          exception = Catch.Exception(()=> sut.FlowInto(otherFacility));
+        };
+
+        static IFacility otherFacility;
+        static Exception exception;
+      }
+    }
+  }
+}
diff --git a/src/test/test.csproj b/src/test/test.csproj
index 1a0edec..093b20e 100755
--- a/src/test/test.csproj
+++ b/src/test/test.csproj
@@ -1,80 +1,81 @@
-<?xml version="1.0" encoding="utf-8"?>

-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

-  <PropertyGroup>

-    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>

-    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>

-    <ProductVersion>8.0.30703</ProductVersion>

-    <SchemaVersion>2.0</SchemaVersion>

-    <ProjectGuid>{243D66C3-5F67-4B54-86B5-B6B76009B7FF}</ProjectGuid>

-    <OutputType>Library</OutputType>

-    <AppDesignerFolder>Properties</AppDesignerFolder>

-    <RootNamespace>test</RootNamespace>

-    <AssemblyName>test</AssemblyName>

-    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>

-    <FileAlignment>512</FileAlignment>

-  </PropertyGroup>

-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">

-    <DebugSymbols>true</DebugSymbols>

-    <DebugType>full</DebugType>

-    <Optimize>false</Optimize>

-    <OutputPath>bin\Debug\</OutputPath>

-    <DefineConstants>DEBUG;TRACE</DefineConstants>

-    <ErrorReport>prompt</ErrorReport>

-    <WarningLevel>4</WarningLevel>

-  </PropertyGroup>

-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">

-    <DebugType>pdbonly</DebugType>

-    <Optimize>true</Optimize>

-    <OutputPath>bin\Release\</OutputPath>

-    <DefineConstants>TRACE</DefineConstants>

-    <ErrorReport>prompt</ErrorReport>

-    <WarningLevel>4</WarningLevel>

-  </PropertyGroup>

-  <ItemGroup>

-    <Reference Include="Machine.Specifications">

-      <HintPath>..\..\packages\Machine.Specifications.0.5.3.0\lib\Machine.Specifications.dll</HintPath>

-    </Reference>

-    <Reference Include="Rhino.Mocks">

-      <HintPath>..\..\packages\RhinoMocks.3.6\lib\Rhino.Mocks.dll</HintPath>

-    </Reference>

-    <Reference Include="System" />

-    <Reference Include="System.Core" />

-    <Reference Include="System.Xml.Linq" />

-    <Reference Include="System.Data.DataSetExtensions" Condition=" '$(OS)' == 'Windows_NT' " />

-    <Reference Include="Microsoft.CSharp" Condition=" '$(OS)' == 'Windows_NT' " />

-    <Reference Include="System.Data" />

-    <Reference Include="System.Xml" />

-  </ItemGroup>

-  <ItemGroup>

-    <Compile Include="Properties\AssemblyInfo.cs" />

-    <Compile Include="GreetingSpecs.cs" />

-    <Compile Include="BOEDSpecs.cs" />

-    <Compile Include="CalculatorSpecs.cs" />

-    <Compile Include="CapacitySpecs.cs" />

-    <Compile Include="GasPlantSpecs.cs" />

-    <Compile Include="MCFSpecs.cs" />

-    <Compile Include="Mock.cs" />

-    <Compile Include="MonthSpecs.cs" />

-    <Compile Include="ProductionScheduleSpecs.cs" />

-    <Compile Include="QuantitySpecs.cs" />

-    <Compile Include="RangeSpecs.cs" />

-  </ItemGroup>

-  <ItemGroup>

-    <None Include="packages.config" />

-  </ItemGroup>

-  <ItemGroup>

-    <ProjectReference Include="..\domain\domain.csproj">

-      <Project>{4E400E9B-C985-49D3-BD7F-2C1D1022ECED}</Project>

-      <Name>domain</Name>

-    </ProjectReference>

-  </ItemGroup>

-  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets"  Condition=" '$(OS)' == 'Windows_NT' " />

-  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets"/>

-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 

-       Other similar extension points exist, see Microsoft.Common.targets.

-  <Target Name="BeforeBuild">

-  </Target>

-  <Target Name="AfterBuild">

-  </Target>

-  -->

-</Project>

+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{243D66C3-5F67-4B54-86B5-B6B76009B7FF}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>test</RootNamespace>
+    <AssemblyName>test</AssemblyName>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="Machine.Specifications">
+      <HintPath>..\..\packages\Machine.Specifications.0.5.3.0\lib\Machine.Specifications.dll</HintPath>
+    </Reference>
+    <Reference Include="Rhino.Mocks">
+      <HintPath>..\..\packages\RhinoMocks.3.6\lib\Rhino.Mocks.dll</HintPath>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" Condition=" '$(OS)' == 'Windows_NT' " />
+    <Reference Include="Microsoft.CSharp" Condition=" '$(OS)' == 'Windows_NT' " />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="GreetingSpecs.cs" />
+    <Compile Include="BOEDSpecs.cs" />
+    <Compile Include="CalculatorSpecs.cs" />
+    <Compile Include="CapacitySpecs.cs" />
+    <Compile Include="GasPlantSpecs.cs" />
+    <Compile Include="MCFSpecs.cs" />
+    <Compile Include="Mock.cs" />
+    <Compile Include="MonthSpecs.cs" />
+    <Compile Include="ProductionScheduleSpecs.cs" />
+    <Compile Include="QuantitySpecs.cs" />
+    <Compile Include="RangeSpecs.cs" />
+    <Compile Include="WellSpecs.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\domain\domain.csproj">
+      <Project>{4E400E9B-C985-49D3-BD7F-2C1D1022ECED}</Project>
+      <Name>domain</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets"  Condition=" '$(OS)' == 'Windows_NT' " />
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets"/>
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>