1 files changed, 88 insertions, 0 deletions
diff --git a/test/subclassing.py b/test/subclassing.py
new file mode 100644
index 0000000..b621bf5
--- /dev/null
+++ b/test/subclassing.py
@@ -0,0 +1,88 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that we can trivially subclass our "public" classes.  Also
+verify that we can use a trivial subclass of new-style str classes
+as well as UserString as Builder input.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons()
+
+test.write('SConstruct', """
+copy_action = Copy('$TARGET', '$SOURCE')
+
+# Some day, we'd probably like people to be able to subclass Action and
+# Builder, but that's going to take some serious class-hackery to turn
+# our factory function into the class itself.
+#class my_Action(Action):
+#    pass
+#class my_Builder(Builder):
+#    pass
+class my_Scanner(Scanner):
+    pass
+class my_Environment(Environment):
+    pass
+env = my_Environment()
+env.Command('f0.out', 'f0.in', copy_action)
+
+try:
+    from collections import UserString
+except ImportError:
+    exec('from UserString import UserString')
+try:
+    class mystr(str):
+        pass
+except TypeError:
+    class mystr(UserString):
+        pass
+
+Command(mystr('f1.out'),        mystr('f1.in'), copy_action)
+Command(UserString('f2.out'),   UserString('f2.in'),    copy_action)
+
+Install(mystr('install'),       mystr('f1.out'))
+Install(mystr('install'),       UserString('f2.out'))
+""")
+
+test.write('f0.in', "f0.in\n")
+test.write('f1.in', "f1.in\n")
+test.write('f2.in', "f2.in\n")
+
+test.run(arguments = '.')
+
+test.must_match('f0.out',              "f0.in\n")
+test.must_match(['install', 'f1.out'], "f1.in\n")
+test.must_match(['install', 'f2.out'], "f2.in\n")
+
+test.pass_test()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4: