test/timestamp-fallback.py

   1 #!/usr/bin/env python
   2 #
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  22 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23 #
  24
  25 __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
  26
  27 """
  28 Verify falling back to 'timestamp' behavior if there is no md5
  29 module. Formerly checked for hashlib first, but that has been
  30 standard library since 2.5; test is kept in case one of those
  31 rare no-md5 Pythons comes into play (some entities ban the use
  32 of md5 as unsafe, although SCons does not use it in a security context.
  33 """
  34
  35 import os
  36
  37 import TestSCons
  38
  39 test = TestSCons.TestSCons()
  40
  41 try:
  42     from hashlib import md5
  43 except ImportError:
  44     pass
  45 else:
  46     msg = "The 'md5' algorithm is built in to hashlib in this version of Python.\n" + \
  47           "Cannot test falling back to timestamps.\n"
  48     test.skip_test(msg)
  49
  50 test.write('md5.py', r"""
  51 raise ImportError
  52 """)
  53
  54 os.environ['PYTHONPATH'] = test.workpath('.')
  55
  56 test.write('SConstruct', """
  57 DefaultEnvironment(tools=[])
  58
  59 def build(env, target, source):
  60     with open(str(target[0]), 'wt') as ofp, open(str(source[0]), 'rt') as ifp:
  61         ofp.write(ifp.read())
  62
  63 B = Builder(action = build)
  64 env = Environment(tools = [], BUILDERS = { 'B' : B })
  65 env.B(target = 'f1.out', source = 'f1.in')
  66 env.B(target = 'f2.out', source = 'f2.in')
  67 env.B(target = 'f3.out', source = 'f3.in')
  68 env.B(target = 'f4.out', source = 'f4.in')
  69 """)
  70
  71 test.write('f1.in', "f1.in\n")
  72 test.write('f2.in', "f2.in\n")
  73 test.write('f3.in', "f3.in\n")
  74 test.write('f4.in', "f4.in\n")
  75
  76 test.run(arguments = 'f1.out f3.out',
  77          stderr = None)
  78
  79 test.run(arguments = 'f1.out f2.out f3.out f4.out',
  80          stdout = test.wrap_stdout("""\
  81 scons: `f1.out' is up to date.
  82 build(["f2.out"], ["f2.in"])
  83 scons: `f3.out' is up to date.
  84 build(["f4.out"], ["f4.in"])
  85 """),
  86          stderr = None)
  87
  88 os.utime(test.workpath('f1.in'),
  89          (os.path.getatime(test.workpath('f1.in')),
  90           os.path.getmtime(test.workpath('f1.in'))+10))
  91 os.utime(test.workpath('f3.in'),
  92          (os.path.getatime(test.workpath('f3.in')),
  93           os.path.getmtime(test.workpath('f3.in'))+10))
  94
  95 test.run(arguments = 'f1.out f2.out f3.out f4.out',
  96          stdout = test.wrap_stdout("""\
  97 build(["f1.out"], ["f1.in"])
  98 scons: `f2.out' is up to date.
  99 build(["f3.out"], ["f3.in"])
 100 scons: `f4.out' is up to date.
 101 """),
 102          stderr = None)
 103
 104
 105 test.pass_test()
 106
 107 # Local Variables:
 108 # tab-width:4
 109 # indent-tabs-mode:nil
 110 # End:
 111 # vim: set expandtab tabstop=4 shiftwidth=4: