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

"""
Verify that --debug=explain correctly handles changes to actions
that contain a list of function Actions.
"""

import TestSCons

_python_ = TestSCons._python_

test = TestSCons.TestSCons()



test.write('SConstruct', """\
import shutil

env = Environment()
mode = int(ARGUMENTS.get('mode'))
if mode:
    def DifferentCopy(target, source, env):
        tgt = str(target[0])
        src = str(source[0])
        shutil.copy(src, tgt)
    def AltCopyStage2(target, source, env):
        pass
    MyCopy = Builder(action = [DifferentCopy, AltCopyStage2])

    def ChangingCopy(target, source, env):
        tgt = str(target[0])
        src = str(source[0])
        shutil.copy(src, tgt)
    ChangingCopy = Builder(action = ChangingCopy)
else:
    MyCopy = Builder(action = Copy('$TARGET', '$SOURCE'))
    def ChangingCopy(target, source, env):
        tgt = str(target[0].get_abspath())
        src = str(source[0].get_abspath())
        shutil.copy(src, tgt)
    ChangingCopy = Builder(action = ChangingCopy)

env['BUILDERS']['MyCopy'] = MyCopy
env['BUILDERS']['ChangingCopy'] = ChangingCopy

env.MyCopy('f1.out', 'f1.in')
env.ChangingCopy('f2.out', 'f2.in')
""")

test.write('f1.in', "f1.in\n")
test.write('f2.in', "f2.in\n")

test.run(arguments = "mode=0 .")

test.must_match('f1.out', "f1.in\n")
test.must_match('f2.out', "f2.in\n")

test.run(arguments = "--debug=explain mode=1 .",
         stdout = test.wrap_stdout("""\
scons: rebuilding `f1.out' because the build action changed:
               old: Copy("$TARGET", "$SOURCE")
               new: DifferentCopy(target, source, env)
                    AltCopyStage2(target, source, env)
DifferentCopy(["f1.out"], ["f1.in"])
AltCopyStage2(["f1.out"], ["f1.in"])
scons: rebuilding `f2.out' because the contents of the build action changed
               action: ChangingCopy(target, source, env)
ChangingCopy(["f2.out"], ["f2.in"])
"""))



test.pass_test()

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