upstream/mercurial-mirror Files · tests/test-filebranch.t

show: use consistent (and possibly shorter) node lengths...

show: use consistent (and possibly shorter) node lengths `hg show` makes heavy use of shortest() to limit the length of the node hash. For the "stack" and "work" views, you are often looking at multiple lines of similar output for "lines" of work. It is visually appeasing for things to vertically align. A naive use of {shortest(node, N)} could result in variable length nodes and for the first character of the description to vary by a column or two. We implement a function to determine the longest shortest prefix for a set of revisions. The new function is used to determine the printed node length for all `hg show` views. .. feature:: show: use consistent node length in views Our previous shortest node length of 5 was arbitrarily chosen. shortest() already does the work of ensuring that a partial node isn't ambiguous with an integer revision, which is our primary risk of a collision for very short nodes. It should be safe to go with the shortest node possible. Existing code is also optimized to handle nodes as short as 4. So, we decrease the minimum hash length from 5 to 4. We also add a test demonstrating that prefix collisions increase the node length. .. feature:: show: decrease minimum displayed hash length from 5 to 4 Differential Revision: https://phab.mercurial-scm.org/D558

Augie Fackler - - Load All Authors

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      This test makes sure that we don't mark a file as merged with its ancestor

      when we do a merge.

        $ cat <<EOF > merge

        > from __future__ import print_function

        > import sys, os

        > print("merging for", os.path.basename(sys.argv[1]))

        > EOF

        $ HGMERGE="$PYTHON ../merge"; export HGMERGE

      Creating base:

        $ hg init a

        $ cd a

        $ echo 1 > foo

        $ echo 1 > bar

        $ echo 1 > baz

        $ echo 1 > quux

        $ hg add foo bar baz quux

        $ hg commit -m "base"

        $ cd ..

        $ hg clone a b

        updating to branch default

        4 files updated, 0 files merged, 0 files removed, 0 files unresolved

      Creating branch a:

        $ cd a

        $ echo 2a > foo

        $ echo 2a > bar

        $ hg commit -m "branch a"

      Creating branch b:

        $ cd ..

        $ cd b

        $ echo 2b > foo

        $ echo 2b > baz

        $ hg commit -m "branch b"

      We shouldn't have anything but n state here:

        $ hg debugstate --nodates | grep -v "^n"

        [1]

      Merging:

        $ hg pull ../a

        pulling from ../a

        searching for changes

        adding changesets

        adding manifests

        adding file changes

        added 1 changesets with 2 changes to 2 files (+1 heads)

        (run 'hg heads' to see heads, 'hg merge' to merge)

        $ hg merge -v

        resolving manifests

        getting bar

        merging foo

        merging for foo

        1 files updated, 1 files merged, 0 files removed, 0 files unresolved

        (branch merge, don't forget to commit)

        $ echo 2m > foo

        $ echo 2b > baz

        $ echo new > quux

        $ hg ci -m "merge"

      main: we should have a merge here:

        $ hg debugindex --changelog

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0      73  .....       0 cdca01651b96 000000000000 000000000000 (re)

             1        73      68  .....       1 f6718a9cb7f3 cdca01651b96 000000000000 (re)

             2       141      68  .....       2 bdd988058d16 cdca01651b96 000000000000 (re)

             3       209      66  .....       3 d8a521142a3c f6718a9cb7f3 bdd988058d16 (re)

      log should show foo and quux changed:

        $ hg log -v -r tip

        changeset:   3:d8a521142a3c

        tag:         tip

        parent:      1:f6718a9cb7f3

        parent:      2:bdd988058d16

        user:        test

        date:        Thu Jan 01 00:00:00 1970 +0000

        files:       foo quux

        description:

        merge

      foo: we should have a merge here:

        $ hg debugindex foo

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0       3  .....       0 b8e02f643373 000000000000 000000000000 (re)

             1         3       4  .....       1 2ffeddde1b65 b8e02f643373 000000000000 (re)

             2         7       4  .....       2 33d1fb69067a b8e02f643373 000000000000 (re)

             3        11       4  .....       3 aa27919ee430 2ffeddde1b65 33d1fb69067a (re)

      bar: we should not have a merge here:

        $ hg debugindex bar

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0       3  .....       0 b8e02f643373 000000000000 000000000000 (re)

             1         3       4  .....       2 33d1fb69067a b8e02f643373 000000000000 (re)

      baz: we should not have a merge here:

        $ hg debugindex baz

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0       3  .....       0 b8e02f643373 000000000000 000000000000 (re)

             1         3       4  .....       1 2ffeddde1b65 b8e02f643373 000000000000 (re)

      quux: we should not have a merge here:

        $ hg debugindex quux

           rev    offset  length  ..... linkrev nodeid       p1           p2 (re)

             0         0       3  .....       0 b8e02f643373 000000000000 000000000000 (re)

             1         3       5  .....       3 6128c0f33108 b8e02f643373 000000000000 (re)

      Manifest entries should match tips of all files:

        $ hg manifest --debug

        33d1fb69067a0139622a3fa3b7ba1cdb1367972e 644   bar

        2ffeddde1b65b4827f6746174a145474129fa2ce 644   baz

        aa27919ee4303cfd575e1fb932dd64d75aa08be4 644   foo

        6128c0f33108e8cfbb4e0824d13ae48b466d7280 644   quux

      Everything should be clean now:

        $ hg status

        $ hg verify

        checking changesets

        checking manifests

        crosschecking files in changesets and manifests

        checking files

        4 files, 4 changesets, 10 total revisions

        $ cd ..

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				This test makes sure that we don't mark a file as merged with its ancestor
				when we do a merge.

				$ cat <<EOF > merge
				> from __future__ import print_function
				> import sys, os
				> print("merging for", os.path.basename(sys.argv[1]))
				> EOF
				$ HGMERGE="$PYTHON ../merge"; export HGMERGE

				Creating base:

				$ hg init a
				$ cd a
				$ echo 1 > foo
				$ echo 1 > bar
				$ echo 1 > baz
				$ echo 1 > quux
				$ hg add foo bar baz quux
				$ hg commit -m "base"

				$ cd ..
				$ hg clone a b
				updating to branch default
				4 files updated, 0 files merged, 0 files removed, 0 files unresolved

				Creating branch a:

				$ cd a
				$ echo 2a > foo
				$ echo 2a > bar
				$ hg commit -m "branch a"

				Creating branch b:

				$ cd ..
				$ cd b
				$ echo 2b > foo
				$ echo 2b > baz
				$ hg commit -m "branch b"

				We shouldn't have anything but n state here:

				$ hg debugstate --nodates \| grep -v "^n"
				[1]

				Merging:

				$ hg pull ../a
				pulling from ../a
				searching for changes
				adding changesets
				adding manifests
				adding file changes
				added 1 changesets with 2 changes to 2 files (+1 heads)
				(run 'hg heads' to see heads, 'hg merge' to merge)

				$ hg merge -v
				resolving manifests
				getting bar
				merging foo
				merging for foo
				1 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ echo 2m > foo
				$ echo 2b > baz
				$ echo new > quux

				$ hg ci -m "merge"

				main: we should have a merge here:

				$ hg debugindex --changelog
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 73 ..... 0 cdca01651b96 000000000000 000000000000 (re)
				1 73 68 ..... 1 f6718a9cb7f3 cdca01651b96 000000000000 (re)
				2 141 68 ..... 2 bdd988058d16 cdca01651b96 000000000000 (re)
				3 209 66 ..... 3 d8a521142a3c f6718a9cb7f3 bdd988058d16 (re)

				log should show foo and quux changed:

				$ hg log -v -r tip
				changeset: 3:d8a521142a3c
				tag: tip
				parent: 1:f6718a9cb7f3
				parent: 2:bdd988058d16
				user: test
				date: Thu Jan 01 00:00:00 1970 +0000
				files: foo quux
				description:
				merge



				foo: we should have a merge here:

				$ hg debugindex foo
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
				1 3 4 ..... 1 2ffeddde1b65 b8e02f643373 000000000000 (re)
				2 7 4 ..... 2 33d1fb69067a b8e02f643373 000000000000 (re)
				3 11 4 ..... 3 aa27919ee430 2ffeddde1b65 33d1fb69067a (re)

				bar: we should not have a merge here:

				$ hg debugindex bar
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
				1 3 4 ..... 2 33d1fb69067a b8e02f643373 000000000000 (re)

				baz: we should not have a merge here:

				$ hg debugindex baz
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
				1 3 4 ..... 1 2ffeddde1b65 b8e02f643373 000000000000 (re)

				quux: we should not have a merge here:

				$ hg debugindex quux
				rev offset length ..... linkrev nodeid p1 p2 (re)
				0 0 3 ..... 0 b8e02f643373 000000000000 000000000000 (re)
				1 3 5 ..... 3 6128c0f33108 b8e02f643373 000000000000 (re)

				Manifest entries should match tips of all files:

				$ hg manifest --debug
				33d1fb69067a0139622a3fa3b7ba1cdb1367972e 644 bar
				2ffeddde1b65b4827f6746174a145474129fa2ce 644 baz
				aa27919ee4303cfd575e1fb932dd64d75aa08be4 644 foo
				6128c0f33108e8cfbb4e0824d13ae48b466d7280 644 quux

				Everything should be clean now:

				$ hg status

				$ hg verify
				checking changesets
				checking manifests
				crosschecking files in changesets and manifests
				checking files
				4 files, 4 changesets, 10 total revisions

				$ cd ..