tests/cpydiff: Add difference-test for second arg of builtin next().

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/cpydiff/builtin_next_arg2.py b/tests/cpydiff/builtin_next_arg2.py
new file mode 100644
index 000000000..cbde773f9
--- /dev/null
+++ b/tests/cpydiff/builtin_next_arg2.py
@@ -0,0 +1,12 @@
+"""
+categories: Modules,builtins
+description: Second argument to next() is not implemented
+cause: MicroPython is optimised for code space.
+workaround: Instead of `val = next(it, deflt)` use::
+
+    try:
+        val = next(it)
+    except StopIteration:
+        val = deflt
+"""
+print(next(iter(range(0)), 42))