test/Requires/eval-order.py

   1 #!/usr/bin/env python
   2 #
   3 # __COPYRIGHT__
   4 #
   5 # Permission is hereby granted, free of charge, to any person obtaining
   6 # a copy of this software and associated documentation files (the
   7 # "Software"), to deal in the Software without restriction, including
   8 # without limitation the rights to use, copy, modify, merge, publish,
   9 # distribute, sublicense, and/or sell copies of the Software, and to
  10 # permit persons to whom the Software is furnished to do so, subject to
  11 # the following conditions:
  12 #
  13 # The above copyright notice and this permission notice shall be included
  14 # in all copies or substantial portions of the Software.
  15 #
  16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  17 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  18 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  20 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  21 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  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 that env.Requires() nodes are evaluated before other children.
  29 """
  30
  31 import TestSCons
  32
  33 test = TestSCons.TestSCons()
  34
  35 test.write('SConstruct', """
  36 def copy_and_create_func(target, source, env):
  37     with open(str(target[0]), 'w') as ofp:
  38         for s in source:
  39             with open(str(s), 'r') as ifp:
  40                 ofp.write(ifp.read())
  41     with open('file.in', 'w') as f:
  42         f.write("file.in 1\\n")
  43     return None
  44 copy_and_create = Action(copy_and_create_func)
  45 env = Environment()
  46 env.Requires('file.out', 'prereq.out')
  47 env.Command('file.out', 'file.in', Copy('$TARGET', '$SOURCES'))
  48 env.Command('prereq.out', 'prereq.in', copy_and_create)
  49 """)
  50
  51 test.write('prereq.in', "prereq.in 1\n")
  52
  53 # First:  build file.out.  prereq.out should be built first, and if
  54 # not, we'll get an error when the build action tries to use it to
  55 # build file.out.
  56
  57 test.run(arguments='file.out')
  58
  59 test.must_match('prereq.out', "prereq.in 1\n", mode='r')
  60 test.must_match('file.out', "file.in 1\n", mode='r')
  61
  62 test.pass_test()
  63
  64 # Local Variables:
  65 # tab-width:4
  66 # indent-tabs-mode:nil
  67 # End:
  68 # vim: set expandtab tabstop=4 shiftwidth=4: