Cleaned up CA exceptions. Integrated free-standing handle class.

installer/src/installer-lib/test/exception_test.cpp

Index: installer/src/installer-lib/test/exception_test.cpp
===================================================================
new file mode 100644
--- /dev/null
+++ b/installer/src/installer-lib/test/exception_test.cpp
@@ -0,0 +1,58 @@
+/**
+ * \file exception_test.cpp Unit tests for the library-wide exception classes in installer-lib.h
+ */
+
+#include <gtest/gtest.h>
+
+#include <Windows.h>
+
+#include "../installer-lib.h"
+
+TEST( Exception_Test, empty_two )
+{
+  ::SetLastError( 0 ) ;
+  windows_api_error e( "", "" ) ;
+  ASSERT_STREQ( "<unspecified> returned <unknown> with last error code 0", e.what() ) ;
+}
+
+TEST( Exception_Test, empty_three )
+{
+  ::SetLastError( 1 ) ;
+  windows_api_error e( "", "", "" ) ;
+  ASSERT_STREQ( "<unspecified> returned <unknown> with last error code 1", e.what() ) ;
+}
+
+TEST( Exception_Test, empty_empty_message )
+{
+  ::SetLastError( 2 ) ;
+  windows_api_error e( "", "", "message" ) ;
+  ASSERT_STREQ( "<unspecified> returned <unknown> with last error code 2: message", e.what() ) ;
+}
+
+TEST( Exception_Test, string_number )
+{
+  ::SetLastError( 3 ) ;
+  windows_api_error e( "Beep", 1 ) ;
+  ASSERT_STREQ( "Beep returned 1 with last error code 3", e.what() ) ;
+}
+
+TEST( Exception_Test, string_number_message )
+{
+  ::SetLastError( 4 ) ;
+  windows_api_error e( "Beep", 1, "message" ) ;
+  ASSERT_STREQ( "Beep returned 1 with last error code 4: message", e.what() ) ;
+}
+
+TEST( Exception_Test, string_string )
+{
+  ::SetLastError( 5 ) ;
+  windows_api_error e( "GetErrorMode", "SEM_FAILCRITICALERRORS" ) ;
+  ASSERT_STREQ( "GetErrorMode returned SEM_FAILCRITICALERRORS with last error code 5", e.what() ) ;
+}
+
+TEST( Exception_Test, string_string_message )
+{
+  ::SetLastError( 6 ) ;
+  windows_api_error e( "GetErrorMode", "SEM_FAILCRITICALERRORS", "message" ) ;
+  ASSERT_STREQ( "GetErrorMode returned SEM_FAILCRITICALERRORS with last error code 6: message", e.what() ) ;
+}