#!/usr/bin/env python
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"""
Verify the behavior of the "help" subcommand (and its "h" and "?" aliases).
"""

import TestSCons

test = TestSCons.TestSCons()

test.write('SConstruct', """\
Command('foo.out', 'foo.in', Copy('$TARGET', '$SOURCE'))
Command('1', [], Touch('$TARGET'))
""")

test.write('foo.in', "foo.in 1\n")



scons = test.start(arguments = '-Q --interactive')

scons.send("build foo.out 1\n")

test.wait_for(test.workpath('1'))

test.must_match(test.workpath('foo.out'), "foo.in 1\n")



scons.send('help\n')

scons.send('h\n')

scons.send('?\n')

help_text = """\

build [TARGETS]         Build the specified TARGETS and their dependencies. 'b' is a synonym.
clean [TARGETS]         Clean (remove) the specified TARGETS and their dependencies.  'c' is a synonym.
exit                    Exit SCons interactive mode.
help [COMMAND]          Prints help for the specified COMMAND.  'h' and '?' are synonyms.
shell [COMMANDLINE]     Execute COMMANDLINE in a subshell.  'sh' and '!' are synonyms.
version                 Prints SCons version information.
"""

expect_stdout = """\
scons>>> Copy("foo.out", "foo.in")
Touch("1")
scons>>> %(help_text)s
scons>>> %(help_text)s
scons>>> %(help_text)s
scons>>> 
""" % locals()

test.finish(scons, stdout = expect_stdout)



test.pass_test()

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