Clear out dependent-child caches when a node is rebuilt. (Kevin Quick)

1 files changed, 110 insertions, 0 deletions

diff --git a/test/srcchange.py b/test/srcchange.py
new file mode 100644
index 00000000..2188bcc5
--- /dev/null
+++ b/test/srcchange.py
@@ -0,0 +1,110 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Test changing the C source files based on an always-executed revision
+extraction and substitution.
+"""
+
+import os.path
+
+import TestSCons
+
+test = TestSCons.TestSCons()
+
+test.write('getrevision', """
+#!/usr/bin/env python
+import string
+print string.strip(open('revnum.in','rb').read())
+""")
+
+test.write('SConstruct', """
+import re
+import string
+
+def subrevision(target, source ,env):
+    orig = target[0].get_contents()
+    new = re.sub('\$REV.*?\$',
+                 '$REV: %%s$'%%string.strip(source[0].get_contents()),
+                 target[0].get_contents())
+    outf = open(str(target[0]),'wb')
+    outf.write(new)
+    outf.close()
+
+SubRevision = Action(subrevision)
+
+env=Environment()
+content_env=env.Copy()
+content_env.TargetSignatures('content')
+content_env.Command('revision.in', [], '%(python)s getrevision > $TARGET')
+content_env.AlwaysBuild('revision.in')
+env.Precious('main.cpp')
+env.Command('main.cpp', 'revision.in', SubRevision)
+exe = env.Program('main.cpp')
+env.Default(exe)
+""" % {'python':TestSCons.python})
+
+test.write('main.cpp', """\
+#include <iostream>
+int
+main(int argc, char *argv[])
+{
+    std::cout << "Revision $REV$" << std::endl;
+}
+""")
+
+test.write('revnum.in', '3.2\n')
+
+prog = 'main' + TestSCons._exe
+
+full_build=test.wrap_stdout("""\
+%(python)s getrevision > revision.in
+subrevision(["main.cpp"], ["revision.in"])
+g++ -c -o main.o main.cpp
+g++ -o main main.o
+""" % {'python':TestSCons.python})
+
+light_build=test.wrap_stdout("""\
+%(python)s getrevision > revision.in
+""" % {'python':TestSCons.python})
+
+test.run(arguments='.', stdout=full_build)
+test.must_exist(prog)
+test.run(program=test.workpath(prog), stdout='Revision $REV: 3.2$\n')
+
+test.run(arguments='.', stdout=light_build)
+test.must_exist(prog)
+
+test.run(arguments='.', stdout=light_build)
+test.must_exist(prog)
+
+test.write('revnum.in', '3.3\n')
+
+test.run(arguments='.', stdout=full_build)
+test.must_exist(prog)
+test.run(program=test.workpath(prog), stdout='Revision $REV: 3.3$\n')
+
+test.pass_test()