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

"""
Verify that SWIG include directives produce the correct dependencies
in cases of recursive inclusion.
"""

import os
import TestSCons
from SCons.Defaults import DefaultEnvironment

DefaultEnvironment( tools = [ 'swig' ] )

test = TestSCons.TestSCons()

# Check for prerequisites of this test.
for pre_req in ['swig', 'python']:
    if not test.where_is(pre_req):
        test.skip_test('Can not find installed "' + pre_req + '", skipping test.%s' % os.linesep)

test.write("recursive.h", """\
/* An empty header file. */
""")

test.write("main.h", """\
#include "recursive.h"
""")

test.write("main.c", """\
#include "main.h"
""")

test.write("mod.i", """\
%module mod

%include "main.h"

#include "main.h"
""")

test.write('SConstruct', """\
import distutils.sysconfig
import sys

DefaultEnvironment( tools = [ 'swig' ] )

env = Environment(
    SWIGFLAGS = [
        '-python'
    ],
    CPPPATH = [ 
        distutils.sysconfig.get_python_inc()
    ],
    SHLIBPREFIX = ""
)

if sys.platform == 'darwin':
    env['LIBS']=['python%d.%d'%(sys.version_info[0],sys.version_info[1])]

env.SharedLibrary(
    'mod.so',
    [
        "mod.i",
        "main.c",
    ]
)
""")

expectMain = """\
+-main.os
  +-main.c
  +-main.h
  +-recursive.h"""

expectMod = """\
+-mod_wrap.os
  +-mod_wrap.c
  | +-mod.i
  | +-main.h
  | +-recursive.h"""

# Validate that the recursive dependencies are found with SWIG scanning first.
test.run( arguments = '--tree=all mod_wrap.os main.os' )

test.must_contain_all( test.stdout(), expectMain )
test.must_contain_all( test.stdout(), expectMod )

# Validate that the recursive dependencies are found consistently.
test.run( arguments = '--tree=all main.os mod_wrap.os' )

test.must_contain_all( test.stdout(), expectMain )
test.must_contain_all( test.stdout(), expectMod )

test.run()
test.up_to_date()

test.pass_test()

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