[labeling] Initial python unittest setup and some tests

- Note: some tests will fail until differences in platform dpi are worked out

Author: dakcarto

tests/src/python/CMakeLists.txt

@@ -22,7 +22,10 @@ ADD_PYTHON_TEST(PyQgsPoint test_qgspoint.py)
 ADD_PYTHON_TEST(PyQgsAtlasComposition test_qgsatlascomposition.py)
 ADD_PYTHON_TEST(PyQgsComposerLabel test_qgscomposerlabel.py)
 ADD_PYTHON_TEST(PyQgsExpression test_qgsexpression.py)
-#ADD_PYTHON_TEST(PyQgsPalLabeling test_qgspallabeling.py)
+ADD_PYTHON_TEST(PyQgsPalLabelingBase test_qgspallabeling_base.py)
+ADD_PYTHON_TEST(PyQgsPalLabelingCanvas test_qgspallabeling_canvas.py)
+#ADD_PYTHON_TEST(PyQgsPalLabelingCanvas test_qgspallabeling_composer.py)
+#ADD_PYTHON_TEST(PyQgsPalLabelingCanvas test_qgspallabeling_server.py)
 ADD_PYTHON_TEST(PyQgsVectorFileWriter test_qgsvectorfilewriter.py)
 ADD_PYTHON_TEST(PyQgsSpatialiteProvider test_qgsspatialiteprovider.py)
 ADD_PYTHON_TEST(PyQgsZonalStatistics test_qgszonalstatistics.py)