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

"""
Test the --cache-disable option when retrieving derived files from a
CacheDir.
"""

import os.path
import shutil

import TestSCons

test = TestSCons.TestSCons()

test.subdir('cache', 'src')

test.write(['src', 'SConstruct'], """
def cat(env, source, target):
    target = str(target[0])
    open('cat.out', 'ab').write(target + "\\n")
    source = map(str, source)
    f = open(target, "wb")
    for src in source:
        f.write(open(src, "rb").read())
    f.close()
env = Environment(BUILDERS={'Cat':Builder(action=cat)})
env.Cat('aaa.out', 'aaa.in')
env.Cat('bbb.out', 'bbb.in')
env.Cat('ccc.out', 'ccc.in')
env.Cat('all', ['aaa.out', 'bbb.out', 'ccc.out'])
CacheDir(r'%s')
""" % test.workpath('cache'))

test.write(['src', 'aaa.in'], "aaa.in\n")
test.write(['src', 'bbb.in'], "bbb.in\n")
test.write(['src', 'ccc.in'], "ccc.in\n")

# Verify that a normal build works correctly, and clean up.
# This should populate the cache with our derived files.
test.run(chdir = 'src', arguments = '.')

test.fail_test(test.read(['src', 'all']) != "aaa.in\nbbb.in\nccc.in\n")
test.fail_test(test.read(['src', 'cat.out']) != "aaa.out\nbbb.out\nccc.out\nall\n")

test.up_to_date(chdir = 'src', arguments = '.')

test.run(chdir = 'src', arguments = '-c .')
test.unlink(['src', 'cat.out'])

# Verify that we now retrieve the derived files from cache,
# not rebuild them.  Then clean up.
test.run(chdir = 'src', arguments = '.', stdout = test.wrap_stdout("""\
Retrieved `aaa.out' from cache
Retrieved `bbb.out' from cache
Retrieved `ccc.out' from cache
Retrieved `all' from cache
"""))

test.fail_test(test.read(['src', 'all']) != "aaa.in\nbbb.in\nccc.in\n")
test.fail_test(os.path.exists(test.workpath('src', 'cat.out')))

test.up_to_date(chdir = 'src', arguments = '.')

test.run(chdir = 'src', arguments = '-c .')

# Verify that when run with --cache-disable, we rebuild the files even
# though they're available from the cache.  Then clean up.
test.run(chdir = 'src',
         arguments = '--cache-disable .',
         stdout = test.wrap_stdout("""\
cat("aaa.out", "aaa.in")
cat("bbb.out", "bbb.in")
cat("ccc.out", "ccc.in")
cat("all", ["aaa.out", "bbb.out", "ccc.out"])
"""))

test.fail_test(test.read(['src', 'all']) != "aaa.in\nbbb.in\nccc.in\n")
test.fail_test(test.read(['src', 'cat.out']) != "aaa.out\nbbb.out\nccc.out\nall\n")

test.up_to_date(chdir = 'src', arguments = '.')

test.run(chdir = 'src', arguments = '-c .')
test.unlink(['src', 'cat.out'])

# Verify that when run with --no-cache, we rebuild the files even
# though they're available from the cache.  Then clean up.
test.run(chdir = 'src',
         arguments = '--no-cache .',
         stdout = test.wrap_stdout("""\
cat("aaa.out", "aaa.in")
cat("bbb.out", "bbb.in")
cat("ccc.out", "ccc.in")
cat("all", ["aaa.out", "bbb.out", "ccc.out"])
"""))

test.fail_test(test.read(['src', 'all']) != "aaa.in\nbbb.in\nccc.in\n")
test.fail_test(test.read(['src', 'cat.out']) != "aaa.out\nbbb.out\nccc.out\nall\n")

test.up_to_date(chdir = 'src', arguments = '.')

test.run(chdir = 'src', arguments = '-c .')
test.unlink(['src', 'cat.out'])

# All done.
test.pass_test()