test/Batch/action-changed.py

   1 #!/usr/bin/env python
   2 #
   3 # MIT License
   4 #
   5 # Copyright The SCons Foundation
   6 #
   7 # Permission is hereby granted, free of charge, to any person obtaining
   8 # a copy of this software and associated documentation files (the
   9 # "Software"), to deal in the Software without restriction, including
  10 # without limitation the rights to use, copy, modify, merge, publish,
  11 # distribute, sublicense, and/or sell copies of the Software, and to
  12 # permit persons to whom the Software is furnished to do so, subject to
  13 # the following conditions:
  14 #
  15 # The above copyright notice and this permission notice shall be included
  16 # in all copies or substantial portions of the Software.
  17 #
  18 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  19 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  20 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  21 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  22 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26 """
  27 Verify that targets in a batch builder are rebuilt when the
  28 build action changes.
  29 """
  30
  31 import os
  32
  33 import TestSCons
  34
  35 # swap slashes because on py3 on win32 inside the generated build.py
  36 # the backslashes are getting interpretted as unicode which is
  37 # invalid.
  38 python = TestSCons.python.replace('\\','//')
  39 _python_ = TestSCons._python_
  40
  41 test = TestSCons.TestSCons()
  42
  43 build_py_contents = """\
  44 #!/usr/bin/env %s
  45 import sys
  46 sep = sys.argv.index('--')
  47 targets = sys.argv[1:sep]
  48 sources = sys.argv[sep+1:]
  49 for t, s in zip(targets, sources):
  50     with open(t, 'wb') as ofp, open(s, 'rb') as ifp:
  51         ofp.write(bytearray('%s\\n', 'utf-8'))
  52         ofp.write(ifp.read())
  53 sys.exit(0)
  54 """
  55
  56 test.write('build.py', build_py_contents % (python, 'one'))
  57 os.chmod(test.workpath('build.py'), 0o755)
  58
  59 build_py_workpath = test.workpath('build.py')
  60
  61 # Provide IMPLICIT_COMMAND_DEPENDENCIES=2 so we take a dependency on build.py.
  62 # Without that, we only scan the first entry in the action string.
  63 test.write('SConstruct', """
  64 DefaultEnvironment(tools=[])
  65 env = Environment(tools=[],
  66                   IMPLICIT_COMMAND_DEPENDENCIES=2)
  67 env.PrependENVPath('PATHEXT', '.PY')
  68 bb = Action(r'%(_python_)s "%(build_py_workpath)s" $CHANGED_TARGETS -- $CHANGED_SOURCES',
  69             batch_key=True,
  70             targets='CHANGED_TARGETS')
  71 env['BUILDERS']['Batch'] = Builder(action=bb)
  72 env.Batch('f1.out', 'f1.in')
  73 env.Batch('f2.out', 'f2.in')
  74 env.Batch('f3.out', 'f3.in')
  75 """ % locals())
  76
  77 test.write('f1.in', "f1.in\n")
  78 test.write('f2.in', "f2.in\n")
  79 test.write('f3.in', "f3.in\n")
  80
  81 test.run(arguments = '.')
  82
  83 test.must_match('f1.out', "one\nf1.in\n")
  84 test.must_match('f2.out', "one\nf2.in\n")
  85 test.must_match('f3.out', "one\nf3.in\n")
  86
  87 test.up_to_date(arguments = '.')
  88
  89 test.write('build.py', build_py_contents % (python, 'two'))
  90 os.chmod(test.workpath('build.py'), 0o755)
  91
  92 test.not_up_to_date(arguments = '.')
  93
  94 test.must_match('f1.out', "two\nf1.in\n")
  95 test.must_match('f2.out', "two\nf2.in\n")
  96 test.must_match('f3.out', "two\nf3.in\n")
  97
  98 test.pass_test()
  99
 100 # Local Variables:
 101 # tab-width:4
 102 # indent-tabs-mode:nil
 103 # End:
 104 # vim: set expandtab tabstop=4 shiftwidth=4: