Add testcases for tab indentation

Author: Andreas Freimuth

pylint/test/functional/bad_continuation_tabs.py

@@ -0,0 +1,45 @@
+"""Regression test case for bad-continuation with tabs"""
+# pylint: disable=too-few-public-methods,missing-docstring,invalid-name,unused-variable
+# Various alignment for brackets
+
+# Issue 638
+TEST1 = ["foo",
+         "bar",
+         "baz"
+         ]
+
+MY_LIST = [
+	1, 2, 3,
+	4, 5, 6
+	]
+
+# Issue 1148
+class Abc(object):
+	def b(self, c):
+		self.d(
+			c)
+
+	def d(self, e):
+		self.b(
+		       e)  # [bad-continuation]
+
+	def f(self):
+		return [
+			self.b,
+			self.d
+		]
+
+	def g(self):
+		return [self.b,
+		        self.d
+		]  # [bad-continuation]
+
+	def h(self):
+		return [self.b,
+		        self.d
+		        ]
+
+	def i(self):
+		return [self.b,
+		        self.d
+		       ]

pylint/test/functional/bad_continuation_tabs.rc

@@ -0,0 +1,3 @@
+[FORMAT]
+indent-string='\t'
+indent-after-paren=1

pylint/test/functional/bad_continuation_tabs.txt

@@ -0,0 +1,6 @@
+bad-continuation:24::"Wrong hanging indentation (add 1 space).
+		       e)  # [bad-continuation]
+                       ^|"
+bad-continuation:35::"Wrong continued indentation.
+		]  # [bad-continuation]
+                ^      ||"