Pyfakefs doesn't support relative paths

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Pyfakefs doesn't seem to support using relative paths with operations in the os 
module, such as "mkdir", "remove" or "rename".  The documentation for "mkdir" 
even notes that relative paths are relative to root.

This makes it impossible to do something like 

fake_os.mkdir("foo")  # works
fake_os.rename("foo", "bar") # fails as os.rename doesn't recognize foo as 
relative to root

Or:
fake_os.mkdir("foo")
fake_os.mkdir("foo/bar")  # works
fake_os.chdir("foo")  # works
fake_os.remove("bar") # remove looks for "bar" at the root

When testing code that interacts with the it's helpful to write tests that 
exercise both relative and absolute paths.

Is there a reason this functionality is not implemented to match a real file 
system?

Original issue reported on code.google.com by londinop on 6 May 2013 at 4:13

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Original comment by [email protected] on 8 May 2013 at 6:18

• Changed state: Accepted

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Original comment by [email protected] on 8 May 2013 at 11:41

• Changed state: Started

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[deleted comment]

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This issue was closed by revision b14b755537a2.

Original comment by [email protected] on 13 May 2013 at 8:04