branchcache: add a "pure topological head" fast path
In a narrow but actually quick common case, all topological heads are all on
the same branch and all open. In this case, computing the branch map is very
simple. We can quickly detect situation where this situation will not change.
So we update the V3 format to be able to express this situation and upgrade the
update code to detect we remains in that mode.
The branch cache is populated with the actual value when the branch map is
accessed, but the update_disk method can do the update without needing to
populate it.
*** Test in-uri schemes
CFG: {b'x.prefix': b'http://example.org'}
URI: http://example.org/foo
('x', 'x')
URI: http://example.org/foo/bar
('x', 'x')
URI: http://example.org/bar
('x', 'x')
URI: https://example.org/foo
abort
URI: https://example.org/foo/bar
abort
URI: https://example.org/bar
abort
URI: https://x@example.org/bar
abort
URI: https://y@example.org/bar
abort
CFG: {b'x.prefix': b'https://example.org'}
URI: http://example.org/foo
abort
URI: http://example.org/foo/bar
abort
URI: http://example.org/bar
abort
URI: https://example.org/foo
('x', 'x')
URI: https://example.org/foo/bar
('x', 'x')
URI: https://example.org/bar
('x', 'x')
URI: https://x@example.org/bar
('x', 'x')
URI: https://y@example.org/bar
abort
CFG: {b'x.prefix': b'http://example.org', b'x.schemes': b'https'}
URI: http://example.org/foo
('x', 'x')
URI: http://example.org/foo/bar
('x', 'x')
URI: http://example.org/bar
('x', 'x')
URI: https://example.org/foo
abort
URI: https://example.org/foo/bar
abort
URI: https://example.org/bar
abort
URI: https://x@example.org/bar
abort
URI: https://y@example.org/bar
abort
CFG: {b'x.prefix': b'https://example.org', b'x.schemes': b'http'}
URI: http://example.org/foo
abort
URI: http://example.org/foo/bar
abort
URI: http://example.org/bar
abort
URI: https://example.org/foo
('x', 'x')
URI: https://example.org/foo/bar
('x', 'x')
URI: https://example.org/bar
('x', 'x')
URI: https://x@example.org/bar
('x', 'x')
URI: https://y@example.org/bar
abort
*** Test separately configured schemes
CFG: {b'x.prefix': b'example.org', b'x.schemes': b'http'}
URI: http://example.org/foo
('x', 'x')
URI: http://example.org/foo/bar
('x', 'x')
URI: http://example.org/bar
('x', 'x')
URI: https://example.org/foo
abort
URI: https://example.org/foo/bar
abort
URI: https://example.org/bar
abort
URI: https://x@example.org/bar
abort
URI: https://y@example.org/bar
abort
CFG: {b'x.prefix': b'example.org', b'x.schemes': b'https'}
URI: http://example.org/foo
abort
URI: http://example.org/foo/bar
abort
URI: http://example.org/bar
abort
URI: https://example.org/foo
('x', 'x')
URI: https://example.org/foo/bar
('x', 'x')
URI: https://example.org/bar
('x', 'x')
URI: https://x@example.org/bar
('x', 'x')
URI: https://y@example.org/bar
abort
CFG: {b'x.prefix': b'example.org', b'x.schemes': b'http https'}
URI: http://example.org/foo
('x', 'x')
URI: http://example.org/foo/bar
('x', 'x')
URI: http://example.org/bar
('x', 'x')
URI: https://example.org/foo
('x', 'x')
URI: https://example.org/foo/bar
('x', 'x')
URI: https://example.org/bar
('x', 'x')
URI: https://x@example.org/bar
('x', 'x')
URI: https://y@example.org/bar
abort
*** Test prefix matching
CFG: {b'x.prefix': b'http://example.org/foo', b'y.prefix': b'http://example.org/bar'}
URI: http://example.org/foo
('x', 'x')
URI: http://example.org/foo/bar
('x', 'x')
URI: http://example.org/bar
('y', 'y')
URI: https://example.org/foo
abort
URI: https://example.org/foo/bar
abort
URI: https://example.org/bar
abort
URI: https://x@example.org/bar
abort
URI: https://y@example.org/bar
abort
CFG: {b'x.prefix': b'http://example.org/foo', b'y.prefix': b'http://example.org/foo/bar'}
URI: http://example.org/foo
('x', 'x')
URI: http://example.org/foo/bar
('y', 'y')
URI: http://example.org/bar
abort
URI: https://example.org/foo
abort
URI: https://example.org/foo/bar
abort
URI: https://example.org/bar
abort
URI: https://x@example.org/bar
abort
URI: https://y@example.org/bar
abort
CFG: {b'x.prefix': b'*', b'y.prefix': b'https://example.org/bar'}
URI: http://example.org/foo
abort
URI: http://example.org/foo/bar
abort
URI: http://example.org/bar
abort
URI: https://example.org/foo
('x', 'x')
URI: https://example.org/foo/bar
('x', 'x')
URI: https://example.org/bar
('y', 'y')
URI: https://x@example.org/bar
('x', 'x')
URI: https://y@example.org/bar
('y', 'y')
*** Test user matching
CFG: {b'x.password': b'xpassword', b'x.prefix': b'http://example.org/foo', b'x.username': None}
URI: http://y@example.org/foo
('y', 'xpassword')
CFG: {b'x.password': b'xpassword', b'x.prefix': b'http://example.org/foo', b'x.username': None, b'y.password': b'ypassword', b'y.prefix': b'http://example.org/foo', b'y.username': b'y'}
URI: http://y@example.org/foo
('y', 'ypassword')
CFG: {b'x.password': b'xpassword', b'x.prefix': b'http://example.org/foo/bar', b'x.username': None, b'y.password': b'ypassword', b'y.prefix': b'http://example.org/foo', b'y.username': b'y'}
URI: http://y@example.org/foo/bar
('y', 'xpassword')
*** Test user matching with name in prefix
CFG: {b'x.password': b'xpassword', b'x.prefix': b'https://example.org/foo', b'x.username': None, b'y.password': b'ypassword', b'y.prefix': b'http://y@example.org/foo', b'y.username': b'y'}
URI: http://y@example.org/foo
('y', 'ypassword')
CFG: {b'y.password': b'ypassword', b'y.prefix': b'http://z@example.org/foo', b'y.username': b'y'}
URI: http://y@example.org/foo
abort
CFG: {b'y.password': b'ypassword', b'y.prefix': b'http://z@example.org/foo'}
URI: http://y@example.org/foo
abort
CFG: {b'y.password': b'ypassword', b'y.prefix': b'http://y@example.org/foo', b'y.username': b'z'}
URI: http://y@example.org/foo
abort
CFG: {b'y.password': b'ypassword', b'y.prefix': b'http://y@example.org/foo'}
URI: http://y@example.org/foo
('y', 'ypassword')
CFG: {b'y.password': b'ypassword', b'y.prefix': b'http://y@example.org/foo'}
URI: http://example.org/foo
abort
*** Test urllib2 and urlutil.url
URIs: http://user@example.com:8080/foo http://example.com:8080/foo
('user', '')