Generate unit test placeholder if not exist

To automatically create compile errors for new unit classes, to not
forget to implement tests for the units.

Author: angularsen

Src/Scripts/GenerateUnits.ps1

@@ -73,12 +73,26 @@ function GenerateUnitClass($unitClass)
 
 function GenerateUnitTestBaseClass($unitClass)
 {
-    Write-Host "Generate test for: " + $unitClass.Name;    
+    Write-Host "Generate test base for: " + $unitClass.Name;    
 
     $outFileName = "$PSScriptRoot/../../Tests/GeneratedCode/$($unitClass.Name)TestsBase.g.cs";
     GenerateUnitTestBaseClassSourceCode $unitClass | Out-File -Encoding "UTF8" $outFileName
 }
 
+function GenerateUnitTestClassIfNotExists($unitClass)
+{
+    $outFileName = "$PSScriptRoot/../../Tests/CustomCode/$($unitClass.Name)Tests.cs";
+    if (Test-Path $outFileName) 
+    {
+        return;
+    } 
+    else 
+    {
+        Write-Host "Generate test placeholder for: " + $unitClass.Name;
+        GenerateUnitTestPlaceholderSourceCode $unitClass | Out-File -Encoding "UTF8" $outFileName
+    }
+}
+
 function GenerateUnitEnum($unitClass)
 {
     Write-Host "Generate unit enum for: " + $unitClass.Name;
@@ -112,6 +126,7 @@ function GenerateUnitSystemDefault($unitClasses)
 . "$PSScriptRoot/Include-GenerateUnitClassSourceCode.ps1"
 . "$PSScriptRoot/Include-GenerateUnitEnumSourceCode.ps1"
 . "$PSScriptRoot/Include-GenerateUnitTestBaseClassSourceCode.ps1"
+. "$PSScriptRoot/Include-GenerateUnitTestPlaceholderSourceCode.ps1"
 
 $templatesDir = "$PSScriptRoot/UnitDefinitions";
 $unitClasses = @();
@@ -127,6 +142,7 @@ get-childitem -path $templatesDir -filter "*.json" | % {
     GenerateUnitClass $unitClass
     GenerateUnitEnum $unitClass
     GenerateUnitTestBaseClass $unitClass
+    GenerateUnitTestClassIfNotExists $unitClass
 
     $unitClasses += $unitClass;
 }

Src/Scripts/Include-GenerateUnitTestPlaceholderSourceCode.ps1

@@ -0,0 +1,37 @@
+function GenerateUnitTestPlaceholderSourceCode($unitClass)
+{
+    $className = $unitClass.Name;
+@"
+// Copyright © 2007 by Initial Force AS.  All rights reserved.
+// https://github.com/InitialForce/UnitsNet
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+
+using System;
+
+namespace UnitsNet.Tests.CustomCode
+{
+    public class $($className)Tests : $($className)TestsBase
+    {
+        // TODO Override properties in base class here
+    }
+}
+"@;
+}