override doesn't pass default parameter values to super method (PY-1332)

python/src/com/jetbrains/python/codeInsight/override/PyOverrideImplementUtil.java

@@ -154,6 +154,10 @@ public class PyOverrideImplementUtil {
     String[] paramTexts = ContainerUtil.map(baseParams, new Function<PyParameter, String>() {
       @Override
       public String fun(PyParameter pyParameter) {
+        final PyNamedParameter pyNamedParameter = pyParameter.getAsNamed();
+        if (pyNamedParameter != null) {
+          return pyNamedParameter.getRepr(false);
+        }
         return pyParameter.getText();
       }
     }, ArrayUtil.EMPTY_STRING_ARRAY);

python/testData/override/simple.py

@@ -1,5 +1,5 @@
 class A:
-    def doStuff(self, foo): pass
+    def doStuff(self, foo=True): pass
 
 class B(A):
     def otherMethod(self, foo, bar):

python/testData/override/simple_after.py

@@ -1,8 +1,8 @@
 class A:
-    def doStuff(self, foo): pass
+    def doStuff(self, foo=True): pass
 
 class B(A):
-    def doStuff(self, foo):
+    def doStuff(self, foo=True):
         <selection>A.doStuff(self, foo)</selection>
 
     def otherMethod(self, foo, bar):