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

"""
Verify that two different environments can be used for the same target,
so long as the actions have the same signature; a warning is generated.
"""

import TestSCons

test = TestSCons.TestSCons(match=TestSCons.match_re)

test.write('SConstruct', """\
def build(env, target, source):
    file = open(str(target[0]), 'wb')
    for s in source:
        file.write(open(str(s), 'rb').read())

B = Builder(action=build, multi=1)
env = Environment(BUILDERS = { 'B' : B })
env2 = env.Clone(DIFFERENT_VARIABLE = 'true')
env.B(target = 'file5.out', source = 'file5a.in')
env2.B(target = 'file5.out', source = 'file5b.in')
""")

test.write('file5a.in', 'file5a.in\n')
test.write('file5b.in', 'file5b.in\n')

expect = TestSCons.re_escape("""
scons: warning: Two different environments were specified for target file5.out,
\tbut they appear to have the same action: build(target, source, env)
""") + TestSCons.file_expr

test.run(arguments='file5.out', stderr=expect)

test.must_match('file5.out', "file5a.in\nfile5b.in\n")

test.pass_test()