1 files changed, 51 insertions, 0 deletions
diff --git a/tests/functional/r/raise/raising_format_tuple.py b/tests/functional/r/raise/raising_format_tuple.py
new file mode 100644
index 000000000..0f3a3349a
--- /dev/null
+++ b/tests/functional/r/raise/raising_format_tuple.py
@@ -0,0 +1,51 @@
+'''
+Complain about multi-argument exception constructors where the first argument
+contains a percent sign, thus suggesting a % string formatting was intended
+instead.  The same holds for a string containing {...} suggesting str.format()
+was intended.
+'''
+
+def bad_percent(arg):
+    '''Raising a percent-formatted string and an argument'''
+    raise KeyError('Bad key: %r', arg)  # [raising-format-tuple]
+
+def good_percent(arg):
+    '''Instead of passing multiple arguments, format the message'''
+    raise KeyError('Bad key: %r' % arg)
+
+def bad_multiarg(name, value):
+    '''Raising a formatted string and multiple additional arguments'''
+    raise ValueError('%s measures %.2f', name, value)  # [raising-format-tuple]
+
+def good_multiarg(name, value):
+    '''The arguments have to be written as a tuple for formatting'''
+    raise ValueError('%s measures %.2f' % (name, value))
+
+def bad_braces(arg):
+    '''Curly braces as placeholders'''
+    raise KeyError('Bad key: {:r}', arg)  # [raising-format-tuple]
+
+def good_braces(arg):
+    '''Call str.format() instead'''
+    raise KeyError('Bad key: {:r}'.format(arg))
+
+def bad_multistring(arg):
+    '''Multiple adjacent string literals'''
+    raise AssertionError(  # [raising-format-tuple]
+        'Long message about %s '
+        "split over several adjacent literals", arg)
+
+def bad_triplequote(arg):
+    '''String literals with triple quotes'''
+    raise AssertionError(  # [raising-format-tuple]
+        '''Long message about %s
+        split over several adjacent literals''', arg)
+
+def bad_unicode(arg):
+    '''Unicode string literal'''
+    raise ValueError(u'Bad %s', arg)  # [raising-format-tuple]
+
+def raise_something_without_name(arg):
+    '''Regression test for nodes without .node attribute'''
+    import standard_exceptions  # pylint: disable=import-error,import-outside-toplevel
+    raise standard_exceptions.MyException(u'An %s', arg)  # [raising-format-tuple]