#!/usr/bin/env python
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"""
Verify that use of a VariantDir works when the -n option is used (and
the VariantDir, therefore, isn't actually created) when both duplicate=0
and duplicate=1 are used.
"""

import os

import TestSCons

test = TestSCons.TestSCons()

a_file_in = os.path.join('a', 'file.in')
build0_a_file_out = os.path.join('build0', 'a', 'file.out')
build1_file_out = os.path.join('build1', 'file.out')
build1_file_in = os.path.join('build1', 'file.in')

test.subdir('a')

test.write('SConstruct', """\
env = Environment()
Export('env')
env.SConscript('SConscript',
               exported=['env'],
               variant_dir='build0',
               duplicate=0)
env.SConscript('a/SConscript',
               exported=['env'],
               variant_dir='build1',
               duplicate=1)
""")

test.write('SConscript', """\
Import(['env'])
env.SConscript('a/SConscript', exports=['env'], duplicate=0)
""")

test.write(['a', 'SConscript'], """\
Import(['env'])
env.Command('file.out', 'file.in', Copy('$TARGET', '$SOURCE'))
""")

test.write(['a', 'file.in'], "a/file.in\n")

expect = """\
scons: building associated VariantDir targets: build0
Copy("%(build0_a_file_out)s", "%(a_file_in)s")
Copy("%(build1_file_out)s", "%(build1_file_in)s")
""" % locals()

test.run(arguments = '-Q -n', stdout=expect)

test.must_not_exist('build0')
test.must_not_exist('build1')

# Sanity check that the right thing happens when we *do* build it, just
# to make sure that the expected -n behavior above isn't a side effect
# of doing something wrong without -n.
test.run()

test.must_match(['build0', 'a', 'file.out'], "a/file.in\n")
test.must_match(['build1', 'file.out'], "a/file.in\n")

test.pass_test()

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