FileTest module not compliant with MRI when given filename is empty
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Key: JRUBY-1363
URL: http://jira.codehaus.org/browse/JRUBY-1363
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.0.2
Environment: Linux 2.6, JRuby from trunk (r4329) compared against MRI
1.8.6
Reporter: Luke Monahan
Attachments: fix-file-test-with-empty-filename.diff
The behaviour of methods in the FileTest module are inconsistent with the
behaviour within the MRI when the filename is empty.
Example:
{{FileTest.exists?("")}}
returns {{false}} in MRI, but {{true}} in JRuby.
Ultimately comes from the fact that canonical filenames are used in
{{src/org/jruby/util/JRubyFile.java}} which causes an empty filename to be
interpreted as the current working directory.
Attached is a fairly naive patch that intercepts empty pathnames in
{{JRubyFile.create}} and processes differently, but I have no idea whether this
has flow on effects (all tests pass correctly). Also included are extra tests
in {{test/testFileTest.rb}} for this. Patch is against r4329.
Note: Found this whilst running Rails Edge under JRuby, and is the reason why
there may be problems finding rjs and possibly other templates as the routing
code makes use of {{FileTest.exists?}} with the expectation of correct
behaviour for an empty filename.
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