1 files changed, 103 insertions, 0 deletions
diff --git a/test/Configure/implicit-cache.py b/test/Configure/implicit-cache.py
new file mode 100644
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+++ b/test/Configure/implicit-cache.py
@@ -0,0 +1,103 @@
+#!/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 use of --implicit-cache with the Python Value Nodes
+used by the Configure subsystem generate the same .sconsign file
+and don't cause it to grow without limit.
+
+This was reported as issue 2033 in the tigris.org bug tracker, by the
+Ardour project.  Prior to 0.98.4, the Value implementation would actually
+return the repr() of its value as the str().  This was done because
+it made saving a Value in a file and reading it back in kind of work,
+because a print a string Value into a file (for example) would in fact
+put quotes around it and be assignable in that file.
+
+The problem is that this would get stored in a .sconsign file as its
+repr(), with the specific problem being that Values with embedded newlines
+would get stored as strings containing backslash+n digraphs *and* the
+quotes at beginning and end of the string::
+
+    '\n#include <math.h>\n\n': {<.sconsign info>}
+
+Then, when we read that back in from the .sconsign file, we would store
+that repr() as a string Value itself, escaping the backslashes and
+including the quotes, so when we stored it the second time it would end
+up looking like:
+
+    "'\\n#include <math.h>\\n\\n'": {<.sconsign info>}
+
+Every time that we would read this value and store it again (because
+something else changed in the .sconf_temp directory), the string would
+get longer and longer until it blew out the users's memory.
+"""
+
+import TestSConsign
+
+test = TestSConsign.TestSConsign()
+
+test.write('SConstruct', """
+env = Environment(CPPPATH=['.'])
+conf = Configure(env)
+conf.CheckHeader( 'math.h' )
+if ARGUMENTS.get('USE_FOO'):
+    conf.CheckHeader( 'foo.h' )
+env = conf.Finish()
+""")
+
+test.write('foo.h', "#define FOO 1\n")
+
+# First run:  Have the configure subsystem only look for math.h, and
+# squirrel away the .sconsign info for the conftest_0.c file that's
+# generated from the Python Value Node that we're using for our test.
+
+test.run(arguments = '.')
+
+test.run_sconsign('-d .sconf_temp -e conftest_0.c --raw .sconsign.dblite')
+old_sconsign_dblite = test.stdout()
+
+# Second run:  Have the configure subsystem also look for foo.h, so
+# that there's a change in the .sconf_temp directory that will cause its
+# .sconsign information to get rewritten from disk.  Squirrel away the
+# .sconsign info for the conftest_0.c file.  The now-fixed bug would show
+# up because the entry would change with the additional string-escaping
+# described above.  The now-correct behavior is that the re-stored value
+# for conftest_0.c doesn't change.
+
+test.run(arguments = '--implicit-cache USE_FOO=1 .')
+
+test.run_sconsign('-d .sconf_temp -e conftest_0.c --raw .sconsign.dblite')
+new_sconsign_dblite = test.stdout()
+
+if old_sconsign_dblite != new_sconsign_dblite:
+    print ".sconsign.dblite did not match:"
+    print "FIRST RUN =========="
+    print old_sconsign_dblite
+    print "SECOND RUN =========="
+    print new_sconsign_dblite
+    test.fail_test()
+
+test.pass_test()