AutoTest: Improve finding executables for cmake based projects

Depending on the structure of a project we might end up inside a
library and will not find the correct executable for running a
test. This patch improves finding the correct executable, but
depending on the complexity of the project it will not be able
to fix all circumstances.

Task-number: QTCREATORBUG-17882
Change-Id: I847bb40426bc1b874c2dc6a2a6880b11fe048bda
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/autotest/gtest/gtesttreeitem.cpp

@@ -327,5 +327,17 @@ QString GTestTreeItem::nameSuffix() const
     return suffix;
 }
 
+QSet<QString> GTestTreeItem::internalTargets() const
+{
+    QSet<QString> result;
+    const auto cppMM = CppTools::CppModelManager::instance();
+    const auto projectInfo = cppMM->projectInfo(ProjectExplorer::SessionManager::startupProject());
+    for (const CppTools::ProjectPart::Ptr projectPart : projectInfo.projectParts()) {
+        if (projectPart->projectFile == proFile())
+            result.insert(projectPart->buildSystemTarget);
+    }
+    return result;
+}
+
 } // namespace Internal
 } // namespace Autotest

src/plugins/autotest/gtest/gtesttreeitem.h

@@ -67,6 +67,7 @@ public:
                                               GTestTreeItem::TestStates state,
                                               const QString &proFile) const;
     QString nameSuffix() const;
+    QSet<QString> internalTargets() const override;
 
 private:
     GTestTreeItem::TestStates m_state;