1 files changed, 95 insertions, 0 deletions
diff --git a/test/Requires/basic.py b/test/Requires/basic.py
new file mode 100644
index 0000000..59cdd37
--- /dev/null
+++ b/test/Requires/basic.py
@@ -0,0 +1,95 @@
+#!/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__"
+
+"""
+Verify basic operation of the env.Requires() method for specifying
+order-only prerequisites.
+"""
+
+import TestSCons
+
+test = TestSCons.TestSCons()
+
+test.write('SConstruct', """
+def append_prereq_func(target, source, env):
+    fp = open(str(target[0]), 'wb')
+    for s in map(str, source):
+        fp.write(open(s, 'rb').read())
+    fp.write(open('prereq.out', 'rb').read())
+    fp.close()
+    return None
+append_prereq = Action(append_prereq_func)
+env = Environment()
+env.Requires('file.out', 'prereq.out')
+env.Command('file.out', 'file.in', append_prereq)
+env.Command('prereq.out', 'prereq.in', Copy('$TARGET', '$SOURCES'))
+""")
+
+test.write('file.in', "file.in 1\n")
+test.write('prereq.in', "prereq.in 1\n")
+
+# First:  build file.out.  prereq.out should be built first, and if
+# not, we'll get an error when the build action tries to use it to
+# build file.out.
+
+test.run(arguments = 'file.out')
+
+test.must_match('prereq.out', "prereq.in 1\n")
+test.must_match('file.out', "file.in 1\nprereq.in 1\n")
+
+# Update the prereq.out file.  file.out should still be up to date because
+# prereq.out is not actually a dependency, so we don't detect the
+# underlying change.
+
+test.write('prereq.out', "prereq.out 2\n")
+
+test.up_to_date(arguments = 'file.out')
+
+# Now update the prereq.in file.  Trying to rebuild file.out should
+# cause prereq.out to be updated because of the change, but file.out
+# should *not* be rebuilt because, again, prereq.out isn't actually
+# a dependency that causes rebuilds.
+
+test.write('prereq.in', "prereq.in 3\n")
+
+test.run(arguments = 'file.out')
+
+test.must_match('prereq.out', "prereq.in 3\n")
+test.must_match('file.out', "file.in 1\nprereq.in 1\n")
+
+# Now update file.in, which will cause file.out to be rebuilt, picking
+# up the change(s) to prereq.out of which we were previously oblivious.
+
+test.write('file.in', 'file.in 4\n')
+
+test.run(arguments = 'file.out')
+
+test.must_match('prereq.out', "prereq.in 3\n")
+test.must_match('file.out', "file.in 4\nprereq.in 3\n")
+
+
+
+test.pass_test()