Add bad-exception-context warning for checking that `raise ... from ...` sets a proper exception context.

2 files changed, 19 insertions, 0 deletions

diff --git a/test/input/func_bad_exception_context_py30.py b/test/input/func_bad_exception_context_py30.py
new file mode 100644
index 0000000..b520e68
--- /dev/null
+++ b/test/input/func_bad_exception_context_py30.py
@@ -0,0 +1,17 @@
+"""Check that raise ... from .. uses a proper exception context """
+
+# pylint: disable=unreachable
+
+__revision__ = 0
+
+class ExceptionSubclass(Exception):
+    """ subclass """
+
+def test():
+    """ docstring """
+    raise IndexError from 1
+    raise IndexError from None
+    raise IndexError from ZeroDivisionError
+    raise IndexError from object()
+    raise IndexError from ExceptionSubclass
+
diff --git a/test/messages/func_bad_exception_context_py30.txt b/test/messages/func_bad_exception_context_py30.txt
new file mode 100644
index 0000000..0a4b3ec
--- /dev/null
+++ b/test/messages/func_bad_exception_context_py30.txt
@@ -0,0 +1,2 @@
+E: 12:test: Exception context set to something which is not an exception, nor None

+E: 15:test: Exception context set to something which is not an exception, nor None
\ No newline at end of file