Fix FadeTest and TranslucencyTest when started without install

Summary: Search in build dir for the effects.

Reviewers: #kwin

Differential Revision: https://phabricator.kde.org/D16683

autotests/integration/effects/fade_test.cpp

@@ -55,6 +55,7 @@ private:
 
 void FadeTest::initTestCase()
 {
+    qputenv("XDG_DATA_DIRS", QCoreApplication::applicationDirPath().toUtf8());
     qRegisterMetaType<KWin::ShellClient*>();
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Effect*>();

autotests/integration/effects/translucency_test.cpp

@@ -54,6 +54,7 @@ private:
 
 void TranslucencyTest::initTestCase()
 {
+    qputenv("XDG_DATA_DIRS", QCoreApplication::applicationDirPath().toUtf8());
     qRegisterMetaType<KWin::ShellClient*>();
     qRegisterMetaType<KWin::AbstractClient*>();
     qRegisterMetaType<KWin::Effect*>();