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99 lines
3.1 KiB
Python
99 lines
3.1 KiB
Python
#!/usr/bin/env python
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#
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# __COPYRIGHT__
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
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"""
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Verify expected behavior when an implicit dependency is modified
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asynchronously (that is, mid-build and without our knowledge).
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Test case courtesy Greg Noel.
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"""
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import TestSCons
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_python_ = TestSCons._python_
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test = TestSCons.TestSCons()
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test.write(['SConstruct'], """\
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import SCons.Defaults
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DefaultEnvironment(tools=[])
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env = Environment(tools=[])
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env['BUILDERS']['C'] = Builder(action = Copy('$TARGET', '$SOURCE'),
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source_scanner = SCons.Defaults.CScan)
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env['BUILDERS']['Mod'] = Builder(action = r'%(_python_)s mod.py')
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Alias('seq', env.C('one.c'))
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Alias('seq', env.Mod('mod', 'mod.py'))
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Alias('seq', env.C('two.c'))
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Default('seq')
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""" % locals())
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test.write(['hdr.h'], """\
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/* empty header */
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""")
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test.write(['mod.py'], """\
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with open('mod', 'w') as f, open('mod.py', 'r') as ifp:
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f.write(ifp.read())
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with open('hdr.h', 'w') as f:
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f.write("/* modified */\\n")
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""")
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test.write(['one.c'], """\
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#include "hdr.h"
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""")
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test.write(['two.c'], """\
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#include "hdr.h"
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""")
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# The first run builds the file 'one', then runs the 'mod' script
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# (which update modifies the 'hdr.h' file) then builds the file 'two'.
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test.run(arguments = 'seq')
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# The 'hdr.h' file had its original contents when 'one' was built,
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# and modified contents when 'two' was built. Because we took a
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# look at 'hdr.h' once, up front, we think both files are out of
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# date and will rebuild both (even though 'two' is really up to date).
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#
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# A future enhancement might add some sort of verification mode that
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# would examine 'hdr.h' again when 'two' was built, thereby avoiding
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# the unnecessary rebuild. In that case, the second line below
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# will need to change to "test.up_to_date(...)".
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test.not_up_to_date(arguments = 'one')
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test.not_up_to_date(arguments = 'two')
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# Regardless of what happened on the middle run(s), both files should
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# be up to date now.
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test.up_to_date(arguments = 'seq')
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test.pass_test()
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# Local Variables:
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# tab-width:4
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# indent-tabs-mode:nil
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# End:
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# vim: set expandtab tabstop=4 shiftwidth=4:
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