fastannotate: add a simple test

Summary: This diff adds a simple test for the `fastannotate` command.

Test Plan: Run the newly added test.

Reviewers: #sourcecontrol, stash

Reviewed By: stash

Subscribers: mjpieters

Differential Revision: https://phabricator.intern.facebook.com/D3836677

Signature: t1:3836677:1475076179:fa8b8ff3711a8dad9410a15f77e23adaeb676d5e

tests/test-fastannotate.t

@@ -0,0 +1,138 @@
+  $ extpath=`dirname $TESTDIR`
+  $ PYTHONPATH=$extpath:$TESTDIR/../:$PYTHONPATH
+  $ export PYTHONPATH
+
+  $ cat >> $HGRCPATH << EOF
+  > [extensions]
+  > fastannotate=
+  > EOF
+
+  $ HGMERGE=true; export HGMERGE
+
+  $ hg init repo
+  $ cd repo
+
+a simple merge case
+
+  $ echo 1 > a
+  $ hg commit -qAm 'append 1'
+  $ echo 2 >> a
+  $ hg commit -m 'append 2'
+  $ echo 3 >> a
+  $ hg commit -m 'append 3'
+  $ hg up 1 -q
+  $ cat > a << EOF
+  > 0
+  > 1
+  > 2
+  > EOF
+  $ hg commit -qm 'insert 0'
+  $ hg merge 2 -q
+  $ echo 4 >> a
+  $ hg commit -m merge
+  $ hg log -G -T '{rev}: {desc}'
+  @    4: merge
+  |\
+  | o  3: insert 0
+  | |
+  o |  2: append 3
+  |/
+  o  1: append 2
+  |
+  o  0: append 1
+  
+  $ hg fastannotate a
+  3: 0
+  0: 1
+  1: 2
+  2: 3
+  4: 4
+  $ hg fastannotate -r 0 a
+  0: 1
+  $ hg fastannotate -r 1 a
+  0: 1
+  1: 2
+  $ hg fastannotate -udnclf a
+  test 3 d641cb51f61e Thu Jan 01 00:00:00 1970 +0000 a:1: 0
+  test 0 4994017376d3 Thu Jan 01 00:00:00 1970 +0000 a:1: 1
+  test 1 e940cb6d9a06 Thu Jan 01 00:00:00 1970 +0000 a:2: 2
+  test 2 26162a884ba6 Thu Jan 01 00:00:00 1970 +0000 a:3: 3
+  test 4 3ad7bcd2815f Thu Jan 01 00:00:00 1970 +0000 a:5: 4
+  $ hg fastannotate --linear a
+  3: 0
+  0: 1
+  1: 2
+  4: 3
+  4: 4
+
+incrementally updating
+
+  $ hg fastannotate -r 0 a --debug
+  fastannotate: a: no need to update linelog
+  0: 1
+  $ hg fastannotate -r 0 a --debug --rebuild
+  fastannotate: a: 1 new changesets in the main branch
+  0: 1
+  $ hg fastannotate -r 1 a --debug
+  fastannotate: a: 1 new changesets in the main branch
+  0: 1
+  1: 2
+  $ hg fastannotate -r 3 a --debug
+  fastannotate: a: 1 new changesets in the main branch
+  3: 0
+  0: 1
+  1: 2
+  $ hg fastannotate -r 4 a --debug
+  fastannotate: a: 1 new changesets in the main branch
+  3: 0
+  0: 1
+  1: 2
+  2: 3
+  4: 4
+  $ hg fastannotate -r 1 a --debug
+  fastannotate: a: no need to update linelog
+  0: 1
+  1: 2
+
+rebuild happens automatically if unable to update
+
+  $ hg fastannotate -r 2 a --debug
+  fastannotate: a: cache broken and deleted
+  fastannotate: a: 3 new changesets in the main branch
+  0: 1
+  1: 2
+  2: 3
+
+config option "fastannotate.mainbranch"
+
+  $ hg fastannotate -r 1 --rebuild --config fastannotate.mainbranch=tip a --debug
+  fastannotate: a: 4 new changesets in the main branch
+  0: 1
+  1: 2
+  $ hg fastannotate -r 4 a --debug
+  fastannotate: a: no need to update linelog
+  3: 0
+  0: 1
+  1: 2
+  2: 3
+  4: 4
+
+rename
+
+  $ hg mv a b
+  $ cat > b << EOF
+  > 0
+  > 11
+  > 3
+  > 44
+  > EOF
+  $ hg commit -m b -q
+  $ hg fastannotate -ncf --long-hash b
+  3 d641cb51f61e331c44654104301f8154d7865c89 a: 0
+  5 d44dade239915bc82b91e4556b1257323f8e5824 b: 11
+  2 26162a884ba60e8c87bf4e0d6bb8efcc6f711a4e a: 3
+  5 d44dade239915bc82b91e4556b1257323f8e5824 b: 44
+  $ hg fastannotate -r 26162a884ba60e8c87bf4e0d6bb8efcc6f711a4e a
+  0: 1
+  1: 2
+  2: 3