rvalue reference outputs

Document rvalue reference outputs behaviour
Test rvalue reference outputs

Examples/test-suite/python/cpp11_rvalue_reference_move_runme.py

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+from cpp11_rvalue_reference_move import *
+
+# Function containing rvalue reference parameter
+Counter.reset_counts()
+mo = MovableCopyable(222)
+Counter.check_counts(1, 0, 0, 0, 0, 0)
+MovableCopyable.movein(mo)
+Counter.check_counts(1, 0, 0, 1, 0, 2)
+if not MovableCopyable.is_nullptr(mo):
+    raise RuntimeError("is_nullptr check")
+del mo
+Counter.check_counts(1, 0, 0, 1, 0, 2)
+
+# Move constructor test
+Counter.reset_counts()
+mo = MovableCopyable(222)
+Counter.check_counts(1, 0, 0, 0, 0, 0)
+mo_moved = MovableCopyable(mo)
+Counter.check_counts(1, 0, 0, 1, 0, 1)
+if not MovableCopyable.is_nullptr(mo):
+    raise RuntimeError("is_nullptr check")
+del mo
+Counter.check_counts(1, 0, 0, 1, 0, 1)
+del mo_moved
+Counter.check_counts(1, 0, 0, 1, 0, 2)
+
+# Move assignment operator test
+Counter.reset_counts()
+mo111 = MovableCopyable(111)
+mo222 = MovableCopyable(222)
+Counter.check_counts(2, 0, 0, 0, 0, 0)
+mo111.MoveAssign(mo222)
+Counter.check_counts(2, 0, 0, 0, 1, 1)
+if not MovableCopyable.is_nullptr(mo222):
+    raise RuntimeError("is_nullptr check")
+del mo222
+Counter.check_counts(2, 0, 0, 0, 1, 1)
+del mo111
+Counter.check_counts(2, 0, 0, 0, 1, 2)
+
+# null check
+Counter.reset_counts()
+exception_thrown = False
+try:
+    MovableCopyable.movein(None)
+except ValueError as e:
+    if "invalid null reference" not in str(e):
+        raise RuntimeError("incorrect exception message:" + str(e))
+    exception_thrown = True
+if not exception_thrown:
+    raise RuntimeError("Should have thrown null error")
+Counter.check_counts(0, 0, 0, 0, 0, 0)
+
+# output
+Counter.reset_counts()
+mc = MovableCopyable.moveout(1234)
+Counter.check_counts(2, 0, 0, 0, 1, 1)
+MovableCopyable.check_numbers_match(mc, 1234)
+
+exception_thrown = False
+try:
+    MovableCopyable.movein(mc)
+except RuntimeError as e:
+    if "cannot release ownership as memory is not owned" not in str(e):
+        raise RuntimeError("incorrect exception message:" + str(e))
+    exception_thrown = True
+if not exception_thrown:
+    raise RuntimeError("Should have thrown 'Cannot release ownership as memory is not owned' error")
+Counter.check_counts(2, 0, 0, 0, 1, 1)