Create unit test for function QEasingCuver.setCustomType.

Reviewer: Marcelo Lira <marcelo.lira@openbossa.org>
          Hugo Parente Lima <hugo.pl@gmail.com>

tests/QtCore/qeasingcurve_test.py

@@ -0,0 +1,26 @@
+import unittest
+
+from PySide.QtCore import QEasingCurve
+
+def myFunction(progress):
+    if progress == 1.0:
+        return 100.0
+    else:
+        return -100.0
+
+class TestQEasingCurve(unittest.TestCase):
+    def testCustomType(self):
+        ec = QEasingCurve()
+        ec.setCustomType(myFunction)
+        self.assertEqual(ec.valueForProgress(1.0), 100.0)
+        self.assertEqual(ec.valueForProgress(0.5), -100.0)
+
+    def testObjectCleanup(self):
+        for i in range(100):
+            ec = QEasingCurve()
+            ec.setCustomType(myFunction)
+            self.assertEqual(ec.valueForProgress(1.0), 100.0)
+            self.assertEqual(ec.valueForProgress(0.5), -100.0)
+
+if __name__ == '__main__':
+    unittest.main()