test/chained-build.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 import TestSCons
  27
  28 test = TestSCons.TestSCons()
  29
  30 # During the development of 0.96, there was a --save-explain-info
  31 # option for a brief moment that would surpress storing extra
  32 # info in the .sconsign file(s).  At that time, this test used two
  33 # working subdirectories to test both with and without the saved info.
  34 # We eliminated the --save-explain-info option and the second working
  35 # subdirectory here, but didn't go back and change all the filenames.
  36 test.subdir('w1')
  37
  38 SConstruct1_contents = """\
  39 def build(env, target, source):
  40     with open(str(target[0]), 'wt') as fo, open(str(source[0]), 'rt') as fi:
  41         fo.write(fi.read())
  42
  43 env=Environment(BUILDERS={'B' : Builder(action=build)})
  44 env.B('foo.mid', 'foo.in')
  45 """
  46
  47 SConstruct2_contents = """\
  48 def build(env, target, source):
  49     with open(str(target[0]), 'wt') as fo, open(str(source[0]), 'rt') as fi:
  50         fo.write(fi.read())
  51
  52 env=Environment(BUILDERS={'B' : Builder(action=build)})
  53 env.B('foo.out', 'foo.mid')
  54 """
  55
  56 test.write(['w1', 'SConstruct1'], SConstruct1_contents)
  57 test.write(['w1', 'SConstruct2'], SConstruct2_contents)
  58 test.write(['w1', 'foo.in'], "foo.in 1")
  59
  60 test.run(
  61     chdir='w1',
  62     arguments="--max-drift=0 -f SConstruct1 foo.mid",
  63     stdout=test.wrap_stdout('build(["foo.mid"], ["foo.in"])\n'),
  64 )
  65 test.run(
  66     chdir='w1',
  67     arguments="--max-drift=0 -f SConstruct2 foo.out",
  68     stdout=test.wrap_stdout('build(["foo.out"], ["foo.mid"])\n'),
  69 )
  70 test.up_to_date(chdir='w1', options="--max-drift=0 -f SConstruct1", arguments="foo.mid")
  71 test.up_to_date(chdir='w1', options="--max-drift=0 -f SConstruct2", arguments="foo.out")
  72
  73 test.sleep()  # delay for timestamps
  74 test.write(['w1', 'foo.in'], "foo.in 2")
  75
  76 # Because we're using --max-drift=0, we use the cached csig value
  77 # and think that foo.in hasn't changed even though it has on disk.
  78 test.up_to_date(chdir='w1',
  79          options="--max-drift=0 -f SConstruct1",
  80          arguments="foo.mid")
  81
  82 # Now try with --max-drift disabled.  The build of foo.out should still
  83 # be considered up-to-date, but the build of foo.mid now detects the
  84 # change and rebuilds, too, which then causes a rebuild of foo.out.
  85 test.up_to_date(
  86     chdir='w1', options="--max-drift=-1 -f SConstruct2", arguments="foo.out"
  87 )
  88 test.run(
  89     chdir='w1',
  90     arguments="--max-drift=-1 -f SConstruct1 foo.mid",
  91     stdout=test.wrap_stdout('build(["foo.mid"], ["foo.in"])\n'),
  92 )
  93 test.run(
  94     chdir='w1',
  95     arguments="--max-drift=-1 -f SConstruct2 foo.out",
  96     stdout=test.wrap_stdout('build(["foo.out"], ["foo.mid"])\n'),
  97 )
  98
  99 test.pass_test()
 100
 101 # Local Variables:
 102 # tab-width:4
 103 # indent-tabs-mode:nil
 104 # End:
 105 # vim: set expandtab tabstop=4 shiftwidth=4: