Mercurial > hg
view tests/test-bheads.t @ 29859:a1092e2d70a3
help: internals topic for wire protocol
The Mercurial wire protocol is under-documented. This includes a lack
of source docstrings and comments as well as pages on the official
wiki.
This patch adds the beginnings of "internals" documentation on the
wire protocol.
The documentation should have nearly complete coverage on the
lower-level parts of the protocol, such as the different transport
mechanims, how commands and arguments are sent, capabilities, and,
of course, the commands themselves.
As part of writing this documentation, I discovered a number of
deficiencies in the protocol and bugs in the implementation. I've
started sending patches for some of the issues. I hope to send a lot
more.
This patch starts with the scaffolding for a new internals page.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Mon, 22 Aug 2016 19:46:39 -0700 |
parents | 701df761aa94 |
children | 95c4cca641f6 |
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$ heads() > { > hg heads --template '{rev}: {desc|firstline|strip} ({branches})\n' "$@" > } $ hg init a $ cd a $ echo 'root' >root $ hg add root $ hg commit -m "Adding root node" $ heads 0: Adding root node () ------- $ heads . 0: Adding root node () ======= $ echo 'a' >a $ hg add a $ hg branch a marked working directory as branch a (branches are permanent and global, did you want a bookmark?) $ hg commit -m "Adding a branch" $ heads 1: Adding a branch (a) 0: Adding root node () ------- $ heads . 1: Adding a branch (a) ======= $ hg update -C 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo 'b' >b $ hg add b $ hg branch b marked working directory as branch b $ hg commit -m "Adding b branch" $ heads 2: Adding b branch (b) 1: Adding a branch (a) 0: Adding root node () ------- $ heads . 2: Adding b branch (b) ======= $ echo 'bh1' >bh1 $ hg add bh1 $ hg commit -m "Adding b branch head 1" $ heads 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- $ heads . 3: Adding b branch head 1 (b) ======= $ hg update -C 2 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo 'bh2' >bh2 $ hg add bh2 $ hg commit -m "Adding b branch head 2" created new head $ heads 4: Adding b branch head 2 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () $ heads . 4: Adding b branch head 2 (b) 3: Adding b branch head 1 (b) ======= $ hg update -C 2 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo 'bh3' >bh3 $ hg add bh3 $ hg commit -m "Adding b branch head 3" created new head $ heads 5: Adding b branch head 3 (b) 4: Adding b branch head 2 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- $ heads . 5: Adding b branch head 3 (b) 4: Adding b branch head 2 (b) 3: Adding b branch head 1 (b) ======= $ hg merge 4 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg commit -m "Merging b branch head 2 and b branch head 3" $ heads 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- $ heads . 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) ======= $ echo 'c' >c $ hg add c $ hg branch c marked working directory as branch c $ hg commit -m "Adding c branch" $ heads 7: Adding c branch (c) 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- $ heads . 7: Adding c branch (c) ======= $ heads -r 3 . no open branch heads found on branches c (started at 3) [1] $ heads -r 2 . 7: Adding c branch (c) ------- $ hg update -C 4 0 files updated, 0 files merged, 2 files removed, 0 files unresolved ------- $ heads -r 3 . 3: Adding b branch head 1 (b) ------- $ heads -r 2 . 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) ------- $ heads -r 7 . no open branch heads found on branches b (started at 7) [1] ======= $ for i in 0 1 2 3 4 5 6 7; do > hg update -C "$i" > heads > echo '-------' > heads . > echo '-------' > done 0 files updated, 0 files merged, 2 files removed, 0 files unresolved 7: Adding c branch (c) 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- 0: Adding root node () ------- 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 7: Adding c branch (c) 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- 1: Adding a branch (a) ------- 1 files updated, 0 files merged, 1 files removed, 0 files unresolved 7: Adding c branch (c) 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) ------- 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 7: Adding c branch (c) 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) ------- 1 files updated, 0 files merged, 1 files removed, 0 files unresolved 7: Adding c branch (c) 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) ------- 1 files updated, 0 files merged, 1 files removed, 0 files unresolved 7: Adding c branch (c) 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) ------- 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 7: Adding c branch (c) 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) ------- 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 7: Adding c branch (c) 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () ------- 7: Adding c branch (c) ------- ======= $ for i in a b c z; do > heads "$i" > echo '-------' > done 1: Adding a branch (a) ------- 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) ------- 7: Adding c branch (c) ------- abort: unknown revision 'z'! ------- ======= $ heads 0 1 2 3 4 5 6 7 7: Adding c branch (c) 6: Merging b branch head 2 and b branch head 3 (b) 3: Adding b branch head 1 (b) 1: Adding a branch (a) 0: Adding root node () Topological heads: $ heads -t 7: Adding c branch (c) 3: Adding b branch head 1 (b) 1: Adding a branch (a) $ cd .. ______________ "created new head" message tests $ hg init newheadmsg $ cd newheadmsg Init: no msg $ echo 1 > a $ hg ci -Am "a0: Initial root" adding a $ echo 2 >> a $ hg ci -m "a1 (HN)" $ hg branch b marked working directory as branch b (branches are permanent and global, did you want a bookmark?) $ echo 1 > b $ hg ci -Am "b2: Initial root for branch b" adding b $ echo 2 >> b $ hg ci -m "b3 (HN)" Case NN: msg $ hg up -q null $ hg branch -f b marked working directory as branch b $ echo 1 > bb $ hg ci -Am "b4 (NN): new topo root for branch b" adding bb created new head Case HN: no msg $ echo 2 >> bb $ hg ci -m "b5 (HN)" Case BN: msg $ hg branch -f default marked working directory as branch default $ echo 1 > aa $ hg ci -Am "a6 (BN): new branch root" adding aa created new head Case CN: msg $ hg up -q 4 $ echo 3 >> bbb $ hg ci -Am "b7 (CN): regular new head" adding bbb created new head Case BB: msg $ hg up -q 4 $ hg merge -q 3 $ hg branch -f default marked working directory as branch default $ hg ci -m "a8 (BB): weird new branch root" created new head Case CB: msg $ hg up -q 4 $ hg merge -q 1 $ hg ci -m "b9 (CB): new head from branch merge" created new head Case HB: no msg $ hg up -q 7 $ hg merge -q 6 $ hg ci -m "b10 (HB): continuing head from branch merge" Case CC: msg $ hg up -q 4 $ hg merge -q 2 $ hg ci -m "b11 (CC): new head from merge" created new head Case CH: no msg $ hg up -q 2 $ hg merge -q 10 $ hg ci -m "b12 (CH): continuing head from merge" Case HH: no msg $ hg merge -q 3 $ hg ci -m "b12 (HH): merging two heads" $ cd ..