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diff --git a/test/CacheDir/up-to-date-q.py b/test/CacheDir/up-to-date-q.py
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+++ b/test/CacheDir/up-to-date-q.py
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+#!/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 targets retrieved from CacheDir() are reported as
+up-to-date by the -q option.
+
+Thanks to dvitek for the test case.
+"""
+
+# Demonstrate a regression between 0.96.1 and 0.96.93.
+#
+# SCons would incorrectly believe files are stale if they were retrieved
+# from the cache in a previous invocation.
+#
+# What this script does:
+# 1. Set up two identical C project directories called 'alpha' and
+#    'beta', which use the same cache
+# 2. Invoke scons on 'alpha'
+# 3. Invoke scons on 'beta', which successfully draws output 
+#    files from the cache
+# 4. Invoke scons again, asserting (with -q) that 'beta' is up to date
+#
+# Step 4 failed in 0.96.93.  In practice, this problem would lead to
+# lots of unecessary fetches from the cache during incremental 
+# builds (because they behaved like non-incremental builds).
+
+import TestSCons
+
+test = TestSCons.TestSCons()
+
+test.subdir('cache', 'alpha', 'beta')
+
+foo_c = """
+int main(){ return 0; }
+"""
+
+sconstruct = """
+import os
+CacheDir('%s')
+Program('foo', 'foo.c')
+""" % test.workpath('cache')
+
+test.write('alpha/foo.c', foo_c)
+test.write('alpha/SConstruct', sconstruct)
+
+test.write('beta/foo.c', foo_c)
+test.write('beta/SConstruct', sconstruct)
+
+# First build, populates the cache
+test.run(chdir = 'alpha', arguments = '.')
+
+# Second build, everything is a cache hit
+test.run(chdir = 'beta', arguments = '.')
+
+# Since we just built 'beta', it ought to be up to date.
+test.run(chdir = 'beta', arguments = '. -q')
+
+test.pass_test()