Make writing a .sconsign more robust by writing to a temporary file first and renaming it.

1 files changed, 75 insertions, 0 deletions

diff --git a/test/sconsign.py b/test/sconsign.py
new file mode 100644
index 0000000..ac6bf2f
--- /dev/null
+++ b/test/sconsign.py
@@ -0,0 +1,75 @@
+#!/usr/bin/env python
+#
+# Copyright (c) 2001, 2002 Steven Knight
+#
+# 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__"
+
+import os
+import TestSCons
+
+test = TestSCons.TestSCons()
+
+test.subdir('sub1', 'sub2')
+
+test.write('SConstruct', """
+def build1(target, source, env):
+    open(str(target), 'wb').write(open(str(source[0]), 'rb').read())
+    return None
+
+def build2(target, source, env):
+    import os
+    import os.path
+    open(str(target), 'wb').write(open(str(source[0]), 'rb').read())
+    dir, file = os.path.split(target)
+    os.chmod(dir, 0555)
+    return None
+
+B1 = Builder(name = "B1", action = build1)
+B2 = Builder(name = "B2", action = build2)
+env = Environment(BUILDERS = [B1, B2])
+env.B1(target = 'sub1/foo.out', source = 'foo.in')
+env.B2(target = 'sub2/foo.out', source = 'foo.in')
+""")
+
+test.write('foo.in', "foo.in\n")
+
+sub1__sconsign = test.workpath('sub1', '.sconsign')
+sub2__sconsign = test.workpath('sub2', '.sconsign')
+
+test.write(sub1__sconsign, "")
+test.write(sub2__sconsign, "")
+
+# For *NIX systems, make .sconsign not writable.
+# For Win32 systems, open it to lock it.
+os.chmod(sub1__sconsign, 0444)
+f = open(sub1__sconsign, 'r')
+
+test.run(arguments = '.')
+
+test.fail_test(test.read(sub1__sconsign) == "")
+test.fail_test(test.read(sub2__sconsign) == "")
+
+os.chmod(sub1__sconsign, 0666)
+f.close()
+
+test.pass_test()