Source

SCons / test / CacheDir / NoCache.py

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

"""
Verify that the NoCache environment method works.
"""

import TestSCons, os.path

test = TestSCons.TestSCons()

test.subdir('cache', 'alpha', 'beta')

sconstruct = """
import os
CacheDir(r'%s')


# This is bad form, but the easiest way to produce a test case.
# Obviously, this could be cached if the inputs were passed in a
# reasonable fashion.
g = '%s'

def ActionWithUndeclaredInputs(target,source,env):
    open(target[0].abspath,'w').write(g)

Command('foo_cached', [], ActionWithUndeclaredInputs)
NoCache(Command('foo_notcached', [], ActionWithUndeclaredInputs))
Command('bar_cached', [], ActionWithUndeclaredInputs)
Command('bar_notcached', [], ActionWithUndeclaredInputs)
NoCache('bar_notcached')

# Make sure NoCache doesn't vomit when applied to a Dir
NoCache(Command(Dir('aoeu'), [], Mkdir('$TARGET')))
"""

test.write('alpha/SConstruct', sconstruct % (test.workpath('cache'), 'alpha'))

test.write('beta/SConstruct', sconstruct % (test.workpath('cache'), 'beta'))

# First build, would populate the cache without NoCache
test.run(chdir = 'alpha', arguments = '.')

# Second build, without NoCache there would be a cache hit
test.run(chdir = 'beta', arguments = '.')

test.must_match(['beta','foo_cached'],      'alpha')
test.must_match(['beta','foo_notcached'],   'beta')
test.must_match(['beta','bar_cached'],      'alpha')
test.must_match(['beta','bar_notcached'],   'beta')

test.pass_test()
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