#!/usr/bin/env python
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"""
Test VariantDir handling of removal of source files.

A C++ Program is created and compiled. First, a header is missing. Then
the header is added and the compilation should succeed, then the header
is removed and the compilation should fail again.

Previous versions of SCons did not remove the header from the build
directory after the source directory's header was removed, which caused
the compilation to succeed even after the source file was removed.

Test case supplied by Patrick Mezard--many thanks.
"""

import TestSCons

test = TestSCons.TestSCons()

#-------------------------------------------------------------------------------
#1- Create dep.cpp and the SConstruct. dep.h is missing and the build is
#expected to fail with 2.
#-------------------------------------------------------------------------------

test.subdir('src')

test.write(['src', 'dep.cpp'], """\
#include "dep.h"

int main(int argc, char* argv[])
{
        return test_dep();
}
""")

test.write('SConstruct', """
env = Environment()
env.VariantDir('bin', 'src')
o = env.Object('bin/dep', 'bin/dep.cpp')
env.Program('bin/dep', o)
""")

test.run(arguments = '.', stderr=None, status=2)


#-------------------------------------------------------------------------------
#2- Add dep.h and check the build is OK.
#-------------------------------------------------------------------------------

test.write(['src', 'dep.h'], """\
#ifndef DEP_H
#define DEP_H

inline int test_dep()
{
        return 1;
}

#endif //DEP_H
""")

test.run(arguments = '.')


#-------------------------------------------------------------------------------
#3- Remove dep.h. The build is expected to fail again like in [1].
#-------------------------------------------------------------------------------

test.unlink(['src', 'dep.h'])

test.run(arguments = '.', stderr=None, status=2)


test.pass_test()

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