SCons / test / CacheDir / debug.py

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

"""
Test the --cache-debug option to see if it prints the expected messages.

Note that we don't check for the "race condition" message when someone
else's build populates the CacheDir with a file in between the time we
to build it because it doesn't exist in the CacheDir, and the time our
build of the file completes and we push it out.
"""

import os

import TestSCons

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

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

cache = test.workpath('cache')
debug_out = test.workpath('cache-debug.out')



test.write(['src', 'SConstruct'], """\
CacheDir(r'%(cache)s')
SConscript('SConscript')
""" % locals())

test.write(['src', 'SConscript'], """\
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'])
""")

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



# Test for messages about files not being in CacheDir, with -n (don't
# actually build or push) and sendinig the message to a file.

expect = \
r"""cat\(\["aaa.out"\], \["aaa.in"\]\)
cat\(\["bbb.out"\], \["bbb.in"\]\)
cat\(\["ccc.out"\], \["ccc.in"\]\)
cat\(\["all"\], \["aaa.out", "bbb.out", "ccc.out"\]\)
"""

test.run(chdir='src',
         arguments='-n -Q --cache-debug=%s .' % debug_out,
         stdout=expect)

expect = \
r"""CacheRetrieve\(aaa.out\):  [0-9a-fA-F]+ not in cache
CacheRetrieve\(bbb.out\):  [0-9a-fA-F]+ not in cache
CacheRetrieve\(ccc.out\):  [0-9a-fA-F]+ not in cache
CacheRetrieve\(all\):  [0-9a-fA-F]+ not in cache
"""

test.must_match(debug_out, expect, mode='r')



# Test for messages about actually pushing to the cache, without -n
# and to standard ouput.

expect = \
r"""CacheRetrieve\(aaa.out\):  [0-9a-fA-F]+ not in cache
cat\(\["aaa.out"\], \["aaa.in"\]\)
CachePush\(aaa.out\):  pushing to [0-9a-fA-F]+
CacheRetrieve\(bbb.out\):  [0-9a-fA-F]+ not in cache
cat\(\["bbb.out"\], \["bbb.in"\]\)
CachePush\(bbb.out\):  pushing to [0-9a-fA-F]+
CacheRetrieve\(ccc.out\):  [0-9a-fA-F]+ not in cache
cat\(\["ccc.out"\], \["ccc.in"\]\)
CachePush\(ccc.out\):  pushing to [0-9a-fA-F]+
CacheRetrieve\(all\):  [0-9a-fA-F]+ not in cache
cat\(\["all"\], \["aaa.out", "bbb.out", "ccc.out"\]\)
CachePush\(all\):  pushing to [0-9a-fA-F]+
"""

test.run(chdir='src',
         arguments='-Q --cache-debug=- .',
         stdout=expect)



# Clean up the local targets.

test.run(chdir='src', arguments='-c --cache-debug=%s .' % debug_out)
test.unlink(['src', 'cat.out'])



# Test for messages about retrieving files from CacheDir, with -n
# and sending the messages to standard output.

expect = \
r"""Retrieved `aaa.out' from cache
CacheRetrieve\(aaa.out\):  retrieving from [0-9a-fA-F]+
Retrieved `bbb.out' from cache
CacheRetrieve\(bbb.out\):  retrieving from [0-9a-fA-F]+
Retrieved `ccc.out' from cache
CacheRetrieve\(ccc.out\):  retrieving from [0-9a-fA-F]+
Retrieved `all' from cache
CacheRetrieve\(all\):  retrieving from [0-9a-fA-F]+
"""

test.run(chdir='src',
         arguments='-n -Q --cache-debug=- .',
         stdout=expect)



# And finally test for message about retrieving file from CacheDir
# *without* -n and sending the message to a file.

expect = \
r"""Retrieved `aaa.out' from cache
Retrieved `bbb.out' from cache
Retrieved `ccc.out' from cache
Retrieved `all' from cache
"""

test.run(chdir='src',
         arguments='-Q --cache-debug=%s .' % debug_out,
         stdout=expect)

expect = \
r"""CacheRetrieve\(aaa.out\):  retrieving from [0-9a-fA-F]+
CacheRetrieve\(bbb.out\):  retrieving from [0-9a-fA-F]+
CacheRetrieve\(ccc.out\):  retrieving from [0-9a-fA-F]+
CacheRetrieve\(all\):  retrieving from [0-9a-fA-F]+
"""

test.must_match(debug_out, expect, mode='r')



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