#!/usr/bin/env python
#
# MIT License
#
# Copyright The SCons Foundation
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
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# without limitation the rights to use, copy, modify, merge, publish,
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# 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
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

"""
Verify behavior of the MD5-timestamp Decider() setting.
"""

import os
import stat

import TestSCons

test = TestSCons.TestSCons()

test.write('SConstruct', """\
DefaultEnvironment(tools=[])
m = Environment(tools=[])
m.Decider('MD5-timestamp')
m.Command('content1.out', 'content1.in', Copy('$TARGET', '$SOURCE'))
m.Command('content2.out', 'content2.in', Copy('$TARGET', '$SOURCE'))
m.Command('content3.out', 'content3.in', Copy('$TARGET', '$SOURCE'))
""")

test.write('content1.in', "content1.in 1\n")
test.write('content2.in', "content2.in 1\n")
test.write('content3.in', "content3.in 1\n")

test.run(arguments = '.')
test.up_to_date(arguments = '.')

test.sleep()  # delay for timestamps
test.write('content1.in', "content1.in 2\n")
test.touch('content2.in')

time_content = os.stat('content3.in')[stat.ST_MTIME]
test.write('content3.in', "content3.in 2\n")
test.touch('content3.in', time_content)

# We should only see content1.out rebuilt.  The timestamp of content2.in
# has changed, but its content hasn't, so the follow-on content check says
# to not rebuild it.  The content of content3.in has changed, but that's
# masked by the fact that its timestamp is the same as the last run.

expect = test.wrap_stdout("""\
Copy("content1.out", "content1.in")
""")

test.run(arguments='.', stdout=expect)
test.up_to_date(arguments='.')

test.pass_test()

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