OS X: Add handling for XCTest bundles

An XCTest bundle is a CFBundle with a special product-type and bundle
extension.  For more information about XCTest visit the Mac Developer
library at:

  http://developer.apple.com/library/mac/documentation/DeveloperTools/Conceptual/testing_with_xcode/

Signed-off-by: Gregor Jasny <gjasny@googlemail.com>

Help/manual/cmake-properties.7.rst

@@ -243,6 +243,7 @@ Properties on Targets
    /prop_tgt/VS_WINRT_REFERENCES
    /prop_tgt/WIN32_EXECUTABLE
    /prop_tgt/XCODE_ATTRIBUTE_an-attribute
+   /prop_tgt/XCTEST
 
 Properties on Tests
 ===================

Help/prop_tgt/XCTEST.rst

@@ -0,0 +1,13 @@
+XCTEST
+------
+
+This target is a XCTest CFBundle on the Mac.
+
+This property will usually get set via the :command:`xctest_add_bundle`
+macro in :module:`FindXCTest` module.
+
+If a module library target has this property set to true it will be
+built as a CFBundle when built on the Mac.  It will have the directory
+structure required for a CFBundle.
+
+This property depends on :prop_tgt:`BUNDLE` to be effective.

Source/cmGlobalXCodeGenerator.cxx

@@ -804,6 +804,10 @@ GetSourcecodeValueFromFileExtension(const std::string& _ext,
     {
     sourcecode = "compiled.mach-o.objfile";
     }
+  else if(ext == "xctest")
+    {
+    sourcecode = "wrapper.cfbundle";
+    }
   else if(ext == "xib")
     {
     keepLastKnownFileType = true;
@@ -2598,7 +2602,9 @@ const char* cmGlobalXCodeGenerator::GetTargetFileType(cmTarget& cmtarget)
     case cmTarget::STATIC_LIBRARY:
       return "archive.ar";
     case cmTarget::MODULE_LIBRARY:
-      if (cmtarget.IsCFBundleOnApple())
+      if (cmtarget.IsXCTestOnApple())
+        return "wrapper.cfbundle";
+      else if (cmtarget.IsCFBundleOnApple())
         return "wrapper.plug-in";
       else
         return ((this->XcodeVersion >= 22)?
@@ -2622,7 +2628,9 @@ const char* cmGlobalXCodeGenerator::GetTargetProductType(cmTarget& cmtarget)
     case cmTarget::STATIC_LIBRARY:
       return "com.apple.product-type.library.static";
     case cmTarget::MODULE_LIBRARY:
-      if (cmtarget.IsCFBundleOnApple())
+      if (cmtarget.IsXCTestOnApple())
+        return "com.apple.product-type.bundle.unit-test";
+      else if (cmtarget.IsCFBundleOnApple())
         return "com.apple.product-type.bundle";
       else
         return ((this->XcodeVersion >= 22)?

Source/cmTarget.cxx

@@ -615,6 +615,13 @@ bool cmTarget::IsCFBundleOnApple() const
           this->GetPropertyAsBool("BUNDLE"));
 }
 
+//----------------------------------------------------------------------------
+bool cmTarget::IsXCTestOnApple() const
+{
+  return (this->IsCFBundleOnApple() &&
+          this->GetPropertyAsBool("XCTEST"));
+}
+
 //----------------------------------------------------------------------------
 bool cmTarget::IsBundleOnApple() const
 {
@@ -6791,7 +6798,14 @@ std::string cmTarget::GetCFBundleDirectory(const std::string& config,
   const char *ext = this->GetProperty("BUNDLE_EXTENSION");
   if (!ext)
     {
-    ext = "bundle";
+    if (this->IsXCTestOnApple())
+      {
+      ext = "xctest";
+      }
+    else
+      {
+      ext = "bundle";
+      }
     }
   fpath += ext;
   fpath += "/Contents";

Source/cmTarget.h

@@ -527,6 +527,9 @@ public:
   /** Return whether this target is a CFBundle (plugin) on Apple.  */
   bool IsCFBundleOnApple() const;
 
+  /** Return whether this target is a XCTest on Apple.  */
+  bool IsXCTestOnApple() const;
+
   /** Return whether this target is an executable Bundle on Apple.  */
   bool IsAppBundleOnApple() const;