[CodeSign] Improve cert finding by only checking codesign identities.

Also move the logic out into a separate util module.

Fixes http://hipbyte.myjetbrains.com/youtrack/issue/RM-399.

test/external/unit/project/xcode_config_spec.rb

@@ -0,0 +1,49 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require 'motion/project/xcode_config'
+
+require 'tempfile'
+
+module Motion; module Project
+
+  describe XcodeConfig do
+    describe "concerning codesign certificates" do
+      before do
+        Util::CodeSign.stubs(:identity_names).with(false).returns([
+          'iPhone Developer: Eloy Duran (K5B8YH2WD5)',
+          'Mac Developer Self-Signed for Eloy Durán',
+          'Mac Developer: Eloy Duran (K5B8YH2WD5)',
+        ])
+        App.stubs(:warn)
+        @config = XcodeConfig.new(Dir.tmpdir, :development)
+      end
+
+      it "selects an identity meant for codesigning iPhone apps" do
+        @config.codesign_certificate('iPhone').should == 'iPhone Developer: Eloy Duran (K5B8YH2WD5)'
+      end
+
+      it "selects an identity meant for codesigning Mac apps" do
+        @config.codesign_certificate('Mac').should == 'Mac Developer Self-Signed for Eloy Durán'
+      end
+
+      it "warns when there are multiple matching identities" do
+        App.expects(:warn)
+        @config.codesign_certificate('Mac')
+      end
+
+      it "fails when there no identities could be found" do
+        App.expects(:fail)
+        @config.codesign_certificate('Android')
+      end
+
+      it "limits identities to valid ones in release mode" do
+        Util::CodeSign.stubs(:identity_names).with(true).returns([
+          'iPhone Developer: Eloy Duran (K5B8YH2WD5)',
+          'Mac Developer: Eloy Duran (K5B8YH2WD5)',
+        ])
+        @config.instance_variable_set(:@build_mode, :release)
+        @config.codesign_certificate('Mac').should == 'Mac Developer: Eloy Duran (K5B8YH2WD5)'
+      end
+    end
+  end
+
+end; end