view tests/test-issue522 @ 11541:ab9fa7a85dd9 stable

filelog: cmp: don't read data if hashes are identical (issue2273)

filelog.renamed() is an expensive call as it reads the filelog if p1 == nullid.
It's more efficient to first compute the hash, and to bail early if
the computed hash is the same as the stored nodeid.

'samehashes' variable is not strictly necessary, but helps for comprehension.

#!/bin/sh

# In the merge below, the file "foo" has the same contents in both
# parents, but if we look at the file-level history, we'll notice that
# the version in p1 is an ancestor of the version in p2.  This test
# makes sure that we'll use the version from p2 in the manifest of the
# merge revision.

hg init repo
cd repo

echo foo > foo
hg ci -qAm 'add foo'

echo bar >> foo
hg ci -m 'change foo'

hg backout -r tip -m 'backout changed foo'

hg up -C 0
touch bar
hg ci -qAm 'add bar'

hg merge --debug
hg debugstate | grep foo
hg st -A foo
hg ci -m 'merge'

hg manifest --debug | grep foo
hg debugindex .hg/store/data/foo.i