McuSupport: basic test & required refactoring

Introduced Package interface for mocking purposes.
Made some functions visible in headers for testing.
Added basic test skeleton for mcu plugin.

run cmd: `qtcreator -test McuSupport`

Change-Id: I1011d49052bd8c894da393d8a285b241682f1f94
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/mcusupport/mcusupportplugin.cpp

@@ -31,6 +31,10 @@
 #include "mcusupportoptionspage.h"
 #include "mcusupportrunconfiguration.h"
 
+#if defined(WITH_TESTS) && defined(GOOGLE_TEST_IS_FOUND)
+#include "test/unittest.h"
+#endif
+
 #include <coreplugin/coreconstants.h>
 #include <coreplugin/icontext.h>
 #include <coreplugin/icore.h>
@@ -61,14 +65,9 @@ public:
     };
     McuSupportOptionsPage optionsPage;
     McuDependenciesKitAspect environmentPathsKitAspect;
-};
+}; // class McuSupportPluginPrivate
 
-static McuSupportPluginPrivate *dd = nullptr;
-
-McuSupportPlugin::McuSupportPlugin()
-{
-    setObjectName("McuSupportPlugin");
-}
+static McuSupportPluginPrivate* dd{nullptr};
 
 McuSupportPlugin::~McuSupportPlugin()
 {
@@ -76,11 +75,12 @@ McuSupportPlugin::~McuSupportPlugin()
     dd = nullptr;
 }
 
-bool McuSupportPlugin::initialize(const QStringList& arguments, QString* errorString)
+bool McuSupportPlugin::initialize(const QStringList &arguments, QString *errorString)
 {
     Q_UNUSED(arguments)
     Q_UNUSED(errorString)
 
+    setObjectName("McuSupportPlugin");
     dd = new McuSupportPluginPrivate;
 
     McuSupportOptions::registerQchFiles();
@@ -150,5 +150,14 @@ void McuSupportPlugin::askUserAboutMcuSupportKitsUpgrade()
     ICore::infoBar()->addInfo(info);
 }
 
+QVector<QObject *> McuSupportPlugin::createTestObjects() const
+{
+    QVector<QObject *> tests;
+#if defined(WITH_TESTS) && defined(GOOGLE_TEST_IS_FOUND)
+    tests << new Test::McuSupportTest;
+#endif
+    return tests;
+}
+
 } // namespace Internal
 } // namespace McuSupport