SCons / test / VariantDir / reflect.py

#!/usr/bin/env python
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__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

"""
This test validates the correct operation of a VariantDir specification
in avoiding reflection: reflection is the case where the variant_dir is
located under the corresponding source dir, and trying to use elements
in the variant_dir as sources for that same build dir.

Test based on bug #1055521 filed by Gary Oberbrunner.
"""

import os.path
import re

import TestSCons

test = TestSCons.TestSCons()

_python_ = TestSCons._python_
re_python = re.escape(TestSCons._python_)

test.write("mycc.py", """
print 'Compile'
""")

test.write("mylink.py", """
print 'Link'
""")

sconstruct = """
env = Environment(CC = r'%(_python_)s mycc.py',
                  LINK = r'%(_python_)s mylink.py',
                  INCPREFIX = 'INC_',
                  INCSUFFIX = '_CNI',
                  CPPPATH='%(cpppath)s')  # note no leading '#'
Export("env")
SConscript('SConscript', variant_dir="dir1/dir2", src_dir=".")
"""

test.write('SConscript', """\
Import("env")
env.Program("foo", "src1/foo.c")
Default(".")
""")

test.write('foo.h', '#define HI_STR "hello, there!"\n')

test.subdir('src1')

test.write(['src1', 'foo.c'], """\
#include <stdio.h>
#include "foo.h"
main() { printf(HI_STR);}
""")

# Test the bad cpppath; make sure it doesn't reflect dir1/dir2/foo.h
# into dir1/dir2/dir1/dir2/foo.h, and make sure the target/message for
# builds is correct.

cpppath = 'dir1/dir2'   # note, no leading '#'
test.write('SConstruct', sconstruct % locals() )

targets = re.escape(os.path.join('dir1', 'dir2'))
INC_CNI = re.escape(os.path.join('INC_dir1', 'dir2', 'dir1', 'dir2_CNI'))

# The .+ after mycc\\.py below handles /nologo flags from Visual C/C++.
expect = test.wrap_stdout("""\
scons: building associated VariantDir targets: %(targets)s
%(re_python)s mycc\\.py.* %(INC_CNI)s.*
Compile
%(re_python)s mylink\\.py .+
Link
""" % locals())

test.run(arguments = '', match=TestSCons.match_re, stdout=expect)

# Note that we don't check for the existence of dir1/dir2/foo.h, because
# this bad cpppath will expand to dir1/dir2/dir1/dir2, which means it
# won't pick up the srcdir copy of dir/dir2/foo.h.  That's all right,
# we just need to make sure it doesn't create dir1/dir2/dir1/dir2/foo.h.
test.must_exist(['dir1', 'dir2', 'src1', 'foo.c'])
test.must_not_exist(['dir1', 'dir2', 'dir1', 'dir2', 'foo.h'])

import shutil
shutil.rmtree('dir1', ignore_errors=1)
test.must_not_exist('dir1')

# Now test the good cpppath and make sure everything looks right.

cpppath = '#dir1/dir2'   # note leading '#'
test.write('SConstruct', sconstruct % locals() )

INC_CNI = re.escape(os.path.join('INC_dir1', 'dir2_CNI'))

# The .* after mycc\\.py below handles /nologo flags from Visual C/C++.
test.run(arguments = '',
         stdout=test.wrap_stdout("""\
scons: building associated VariantDir targets: %(targets)s
%(re_python)s mycc\\.py.* %(INC_CNI)s.*
Compile
%(re_python)s mylink\\.py .+
Link
""" % locals()),
         match=TestSCons.match_re,
         )

test.must_exist(['dir1', 'dir2', 'foo.h'])
test.must_exist(['dir1', 'dir2', 'src1', 'foo.c'])
test.must_not_exist(['dir1', 'dir2', 'dir1', 'dir2', 'foo.h'])


test.pass_test()

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