Add regression test for future statements. This adds eight files, but

seven are not tests in their own right; these files are mentioned in
regrtest.

Lib/test/output/test_future

+test_future
+6
+6
+SyntaxError test_future3 3
+SyntaxError test_future4 3
+SyntaxError test_future5 4
+SyntaxError test_future6 3
+SyntaxError test_future7 3

Lib/test/regrtest.py

@@ -197,6 +197,13 @@ NOTTESTS = [
     'test_support',
     'test_b1',
     'test_b2',
+    'test_future1',
+    'test_future2',
+    'test_future3',
+    'test_future4',
+    'test_future5',
+    'test_future6',
+    'test_future7',
     ]
 
 def findtests(testdir=None, stdtests=STDTESTS, nottests=NOTTESTS):

Lib/test/test_future.py

+# Test various flavors of legal and illegal future statements
+
+from test_support import unload
+import re
+
+rx = re.compile('\((\S+).py, line (\d+)')
+
+def check_error_location(msg):
+    mo = rx.search(msg)
+    print "SyntaxError %s %s" % mo.group(1, 2)
+
+# The first two tests should work
+
+unload('test_future1')
+import test_future1
+
+unload('test_future2')
+import test_future2
+
+# The remaining tests should fail
+try:
+    import test_future3
+except SyntaxError, msg:
+    check_error_location(str(msg))
+
+try:
+    import test_future4
+except SyntaxError, msg:
+    check_error_location(str(msg))
+
+try:
+    import test_future5
+except SyntaxError, msg:
+    check_error_location(str(msg))
+
+try:
+    import test_future6
+except SyntaxError, msg:
+    check_error_location(str(msg))
+
+try:
+    import test_future7
+except SyntaxError, msg:
+    check_error_location(str(msg))
+

Lib/test/test_future1.py

+"""This is a test"""
+from __future__ import nested_scopes
+
+def f(x):
+    def g(y):
+        return x + y
+    return g
+
+print f(2)(4)

Lib/test/test_future2.py

+"""This is a test"""
+
+from __future__ import nested_scopes; import string
+
+def f(x):
+    def g(y):
+        return x + y
+    return g
+
+print f(2)(4)

Lib/test/test_future3.py

+"""This is a test"""
+from __future__ import nested_scopes
+from __future__ import rested_snopes
+
+def f(x):
+    def g(y):
+        return x + y
+    return g
+
+print f(2)(4)

Lib/test/test_future4.py

+"""This is a test"""
+import __future__
+from __future__ import nested_scopes
+
+def f(x):
+    def g(y):
+        return x + y
+    return g
+
+print f(2)(4)

Lib/test/test_future5.py

+"""This is a test"""
+from __future__ import nested_scopes
+import foo
+from __future__ import nested_scopes
+
+
+def f(x):
+    def g(y):
+        return x + y
+    return g
+
+print f(2)(4)

Lib/test/test_future6.py

+"""This is a test"""
+"this isn't a doc string"
+from __future__ import nested_scopes
+
+def f(x):
+    def g(y):
+        return x + y
+    return g
+
+print f(2)(4)

Lib/test/test_future7.py

+"""This is a test"""
+
+from __future__ import nested_scopes; import string; from __future__ import \
+     nested_scopes
+
+def f(x):
+    def g(y):
+        return x + y
+    return g
+
+print f(2)(4)