doctests.test_GitVfs module documentation

Create a repository

Methods tested:
     - L{gbp.git.GitVfs.open}
     - L{gbp.git.GitVfs._File.readline}
     - L{gbp.git.GitVfs._File.readlines}
     - L{gbp.git.GitVfs._File.read}
     - L{gbp.git.GitVfs._File.close}

>>> import gbp.git.vfs
>>> (repo, content) = setup_repo()
>>> vfs = gbp.git.vfs.GitVfs(repo, 'HEAD')
>>> gf = vfs.open('foo.txt')
>>> gf.readline()
'al pha\n'
>>> gf.readline()
'a\n'
>>> gf.readlines()
['b\n', 'c']
>>> gf.readlines()
[]
>>> gf.readline()
''
>>> gf.readline()
''
>>> gf.close()
>>> gbp.git.vfs.GitVfs(repo, 'HEAD').open('foo.txt').read() == content.decode()
True
>>> gf = vfs.open('doesnotexist')
Traceback (most recent call last):
...
OSError: can't get HEAD:doesnotexist: fatal: Path 'doesnotexist' does not exist in 'HEAD'
>>> context.teardown()

Create a repository

Methods tested:
     - L{gbp.git.GitVfs.open}
     - L{gbp.git.GitVfs._File.readline}
     - L{gbp.git.GitVfs._File.readlines}
     - L{gbp.git.GitVfs._File.read}
     - L{gbp.git.GitVfs._File.close}

>>> import gbp.git.vfs
>>> (repo, content) = setup_repo()
>>> vfs = gbp.git.vfs.GitVfs(repo, 'HEAD')
>>> gf = vfs.open('foo.txt', 'rb')
>>> gf.readline()
b'al pha\n'
>>> gf.readline()
b'a\n'
>>> gf.readlines()
[b'b\n', b'c']
>>> gf.readlines()
[]
>>> gf.readline()
b''
>>> gf.readline()
b''
>>> gf.close()
>>> gbp.git.vfs.GitVfs(repo, 'HEAD').open('foo.txt', 'rb').read() == content
True
>>> gf = vfs.open('doesnotexist')
Traceback (most recent call last):
...
OSError: can't get HEAD:doesnotexist: fatal: Path 'doesnotexist' does not exist in 'HEAD'
>>> context.teardown()

Create a repository

Methods tested:
     - L{gbp.git.GitVfs.open}

>>> import gbp.git.vfs
>>> (repo, content) = setup_repo()
>>> vfs = gbp.git.vfs.GitVfs(repo, 'HEAD')
>>> with vfs.open('foo.txt') as gf:
...   data = gf.readlines()
>>> data
['al pha\n', 'a\n', 'b\n', 'c']