+ clean-up, fix and new methods added in unit test module

src/Mod/Test/Gui/UnitTestImp.cpp

@@ -244,6 +244,14 @@ void UnitTestDialog::setUnitTest(const QString& unit)
     }
 }
 
+/**
+ * Clears the unit tests.
+ */
+void UnitTestDialog::clearUnitTests()
+{
+    this->comboTests->clear();
+}
+
 /**
  * Returns the unit test.
  */