tests/class_dict_order: Add tests for class attribute ordering.

Author: pi-anl

ports/unix/variants/coverage/mpconfigvariant.h

@@ -44,6 +44,7 @@
 #define MICROPY_WARNINGS_CATEGORY      (1)
 #undef MICROPY_VFS_ROM_IOCTL
 #define MICROPY_VFS_ROM_IOCTL          (1)
+#define MICROPY_PY_CLASS_ORDERED_LOCALS (1)
 #define MICROPY_PY_CRYPTOLIB_CTR       (1)
 #define MICROPY_SCHEDULER_STATIC_NODES (1)
 

tests/basics/class_dict_order.py

@@ -0,0 +1,26 @@
+# test __dict__ attribute ordering of a class
+
+if not hasattr(int, "__dict__"):
+    print("SKIP")
+    raise SystemExit
+
+from collections import OrderedDict
+
+# dict of a user class
+class Foo:
+    abcd = 1
+    efgh = 2
+    ijkl = 3
+
+# dict of a user class
+class Foo2:
+    ijkl = 3
+    abcd = 1
+    efgh = 2
+
+print([k for k in Foo.__dict__.keys() if not k.startswith('_')])
+print([k for k in Foo2.__dict__.keys() if not k.startswith('_')])
+
+
+Foo3 = type('Foo3', (object,), OrderedDict(abcd=1, efgh=2, ijkl=3))
+print([k for k in Foo3.__dict__.keys() if not k.startswith('_')])

tests/run-tests.py

@@ -1001,6 +1001,7 @@ def run_tests(pyb, tests, args, result_dir, num_threads=1):
         skip_tests.add("cmdline/cmd_parsetree.py")
         skip_tests.add("cmdline/repl_sys_ps1_ps2.py")
         skip_tests.add("extmod/ssl_poll.py")
+        skip_tests.add("basics/class_dict_order.py")
 
     # Skip thread mutation tests on targets that have unsafe threading behaviour.
     if args.thread == "unsafe":