1 files changed, 227 insertions, 0 deletions
diff --git a/test/option-j.py b/test/option-j.py
new file mode 100644
index 000000000..3eb7bd32d
--- /dev/null
+++ b/test/option-j.py
@@ -0,0 +1,227 @@
+#!/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.
+#
+
+"""
+This tests the -j command line option, and the num_jobs
+SConscript settable option.
+"""
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+import os.path
+
+import TestSCons
+
+_python_ = TestSCons._python_
+
+try:
+    import threading
+except ImportError:
+    # if threads are not supported, then
+    # there is nothing to test
+    TestCmd.no_result()
+    sys.exit()
+
+
+test = TestSCons.TestSCons()
+
+test.write('build.py', r"""
+import time
+import sys
+file = open(sys.argv[1], 'wb')
+file.write(str(time.time()) + '\n')
+time.sleep(1)
+file.write(str(time.time()))
+file.close()
+""")
+
+test.subdir('foo')
+
+test.write(['foo','foo.in'], r"""
+foo you
+""")
+
+test.write('SConstruct', """
+MyBuild = Builder(action = r'%(_python_)s build.py $TARGETS')
+env = Environment(BUILDERS = { 'MyBuild' : MyBuild })
+env.Tool('install')
+env.MyBuild(target = 'f1', source = 'f1.in')
+env.MyBuild(target = 'f2', source = 'f2.in')
+
+def copyn(env, target, source):
+    import shutil
+    import time
+    time.sleep(1)
+    for t in target:
+        shutil.copy(str(source[0]), str(t))
+
+t = env.Command(target=['foo/foo1.out', 'foo/foo2.out'],
+                source='foo/foo.in',
+                action=copyn)
+env.Install('out', t)
+""" % locals())
+
+def RunTest(args, extra):
+    """extra is used to make scons rebuild the output file"""
+    test.write('f1.in', 'f1.in'+extra)
+    test.write('f2.in', 'f2.in'+extra)
+
+    test.run(arguments = args)
+
+    str = test.read("f1")
+    start1,finish1 = list(map(float, str.split("\n")))
+
+    str = test.read("f2")
+    start2,finish2 = list(map(float, str.split("\n")))
+
+    return start2, finish1
+
+# Test 2 parallel jobs.
+# fail if the second file was not started
+# before the first one was finished.
+start2, finish1 = RunTest('-j 2 f1 f2', "first")
+test.fail_test(not (start2 < finish1))
+
+# re-run the test with the same input, fail if we don't
+# get back the same times, which would indicate that
+# SCons rebuilt the files even though nothing changed
+s2, f1 = RunTest('-j 2 f1 f2', "first")
+test.fail_test(start2 != s2)
+test.fail_test(finish1 != f1)
+
+# Test a single serial job.
+# fail if the second file was started
+# before the first one was finished
+start2, finish1 = RunTest('f1 f2', "second")
+test.fail_test(start2 < finish1)
+
+# Make sure that a parallel build using a list builder
+# succeeds.
+test.run(arguments='-j 2 out')
+
+
+# Test that we fall back and warn properly if there's no threading.py
+# module (simulated), which is the case if this version of Python wasn't
+# built with threading support.
+
+test.subdir('pythonlib')
+
+test.write(['pythonlib', 'threading.py'], """\
+raise ImportError
+""")
+
+save_pythonpath = os.environ.get('PYTHONPATH', '')
+os.environ['PYTHONPATH'] = test.workpath('pythonlib')
+
+#start2, finish1 = RunTest('-j 2 f1, f2', "fifth")
+
+test.write('f1.in', 'f1.in pythonlib\n')
+test.write('f2.in', 'f2.in pythonlib\n')
+
+test.run(arguments = "-j 2 f1 f2", stderr=None)
+
+warn = \
+"""scons: warning: parallel builds are unsupported by this version of Python;
+\tignoring -j or num_jobs option.
+"""
+test.must_contain_all_lines(test.stderr(), [warn])
+
+str = test.read("f1")
+start1,finish1 = list(map(float, str.split("\n")))
+
+str = test.read("f2")
+start2,finish2 = list(map(float, str.split("\n")))
+
+test.fail_test(start2 < finish1)
+
+os.environ['PYTHONPATH'] = save_pythonpath
+
+
+# Test SetJobs() with no -j:
+test.write('SConstruct', """
+MyBuild = Builder(action = r'%(_python_)s build.py $TARGETS')
+env = Environment(BUILDERS = { 'MyBuild' : MyBuild })
+env.Tool('install')
+env.MyBuild(target = 'f1', source = 'f1.in')
+env.MyBuild(target = 'f2', source = 'f2.in')
+
+def copyn(env, target, source):
+    import shutil
+    import time
+    time.sleep(1)
+    for t in target:
+        shutil.copy(str(source[0]), str(t))
+
+t = env.Command(target=['foo/foo1.out', 'foo/foo2.out'], source='foo/foo.in', action=copyn)
+env.Install('out', t)
+
+assert GetOption('num_jobs') == 1
+SetOption('num_jobs', 2)
+assert GetOption('num_jobs') == 2
+""" % locals())
+
+# This should be a parallel build because the SConscript sets jobs to 2.
+# fail if the second file was not started
+# before the first one was finished
+start2, finish1 = RunTest('f1 f2', "third")
+test.fail_test(not (start2 < finish1))
+
+# Test SetJobs() with -j:
+test.write('SConstruct', """
+MyBuild = Builder(action = r'%(_python_)s build.py $TARGETS')
+env = Environment(BUILDERS = { 'MyBuild' : MyBuild })
+env.Tool('install')
+env.MyBuild(target = 'f1', source = 'f1.in')
+env.MyBuild(target = 'f2', source = 'f2.in')
+
+def copyn(env, target, source):
+    import shutil
+    import time
+    time.sleep(1)
+    for t in target:
+        shutil.copy(str(source[0]), str(t))
+
+t = env.Command(target=['foo/foo1.out', 'foo/foo2.out'], source='foo/foo.in', action=copyn)
+env.Install('out', t)
+
+assert GetOption('num_jobs') == 1
+SetOption('num_jobs', 2)
+assert GetOption('num_jobs') == 1
+""" % locals())
+
+# This should be a serial build since -j 1 overrides the call to SetJobs().
+# fail if the second file was started
+# before the first one was finished
+start2, finish1 = RunTest('-j 1 f1 f2', "fourth")
+test.fail_test(start2 < finish1)
+
+
+
+test.pass_test()
+
+# Local Variables:
+# tab-width:4
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=4 shiftwidth=4: