convert: update source shamap when using filemap, just as when not using filemap

The reverse mapping was introduced in 2147a734dcf9 to make roundtrip
conversions possible ... but it did not work when using filemap.

Roundtrips with filemaps will of course only work flawlessly if inverse
mappings are used.

Especially, if a lossy convert mapping is used in one direction, then only
linear lines of development can be converted in the other direction. With this
constraint convert will do the right thing by assuming that excluded files
haven't been changed.)

A test case with general coverage of hg-hg roundtrips with filemap is added.

(There a cases where adding records of converted revisions to the shamap in the
source repository doesn't work - especially when converting the same repo to
several other repos and back. It would arguably be better if convert only
updated the shamaps in the target repo but read shamaps from both the source
and and target repo ... but that is a different story. Making the stuff we have
work consistently is step forward no matter what.)

hgext/convert/filemap.py

@@ -409,3 +409,6 b' class filemap_source(converter_source):'
 
     def getbookmarks(self):
         return self.base.getbookmarks()
+
+    def converted(self, rev, sinkrev):
+        self.base.converted(rev, sinkrev)

tests/test-convert-hg-sink.t

@@ -122,3 +122,271 b' test tag rewriting'
   tip                                2:6f4fd1df87fb
   some-tag                           0:ba8636729451
   $ cd ..
+
+
+Test cases for hg-hg roundtrip
+
+Helper
+
+  $ glog()
+  > {
+  >     hg log -G --template '{rev} {node|short} "{desc}" files: {files}\n' $*
+  > }
+
+Create a tricky source repo
+
+  $ hg init source
+  $ cd source
+
+  $ echo 0 > 0
+  $ hg ci -Aqm '0: add 0'
+  $ echo a > a
+  $ mkdir dir
+  $ echo b > dir/b
+  $ hg ci -qAm '1: add a and dir/b'
+  $ echo c > dir/c
+  $ hg ci -qAm '2: add dir/c'
+  $ hg copy a e
+  $ echo b >> b
+  $ hg ci -qAm '3: copy a to e, change b'
+  $ hg up -qr -3
+  $ echo a >> a
+  $ hg ci -qAm '4: change a'
+  $ hg merge
+  merging a and e to e
+  2 files updated, 1 files merged, 0 files removed, 0 files unresolved
+  (branch merge, don't forget to commit)
+  $ hg copy b dir/d
+  $ hg ci -qAm '5: merge 2 and 3, copy b to dir/d'
+  $ echo a >> a
+  $ hg ci -qAm '6: change a'
+
+  $ hg mani
+  0
+  a
+  b
+  dir/b
+  dir/c
+  dir/d
+  e
+  $ glog
+  @  6 0613c8e59a3d "6: change a" files: a
+  |
+  o    5 717e9b37cdb7 "5: merge 2 and 3, copy b to dir/d" files: dir/d e
+  |\
+  | o  4 86a55cb968d5 "4: change a" files: a
+  | |
+  o |  3 0e6e235919dd "3: copy a to e, change b" files: b e
+  | |
+  o |  2 0394b0d5e4f7 "2: add dir/c" files: dir/c
+  |/
+  o  1 333546584845 "1: add a and dir/b" files: a dir/b
+  |
+  o  0 d1a24e2ebd23 "0: add 0" files: 0
+  
+  $ cd ..
+
+Convert excluding rev 0 and dir/ (and thus rev2):
+
+  $ cat << EOF > filemap
+  > exclude dir
+  > EOF
+
+  $ hg convert --filemap filemap source dest --config convert.hg.revs=1::
+  initializing destination dest repository
+  scanning source...
+  sorting...
+  converting...
+  5 1: add a and dir/b
+  4 2: add dir/c
+  3 3: copy a to e, change b
+  2 4: change a
+  1 5: merge 2 and 3, copy b to dir/d
+  0 6: change a
+
+Verify that conversion skipped rev 2:
+
+  $ glog -R dest
+  o  4 78814e84a217 "6: change a" files: a
+  |
+  o    3 f7cff662c5e5 "5: merge 2 and 3, copy b to dir/d" files: e
+  |\
+  | o  2 ab40a95b0072 "4: change a" files: a
+  | |
+  o |  1 bd51f17597bf "3: copy a to e, change b" files: b e
+  |/
+  o  0 a4a1dae0fe35 "1: add a and dir/b" files: 0 a
+  
+
+Verify mapping correct in both directions:
+
+  $ cat source/.hg/shamap
+  a4a1dae0fe3514cefd9b8541b7abbc8f44f946d5 333546584845f70c4cfecb992341aaef0e708166
+  bd51f17597bf32268e68a560b206898c3960cda2 0e6e235919dd8e9285ba8eb5adf703af9ad99378
+  ab40a95b00725307e79c2fd271000aa8af9759f4 86a55cb968d51770cba2a1630d6cc637b574580a
+  f7cff662c5e581e6f3f1a85ffdd2bcb35825f6ba 717e9b37cdb7eb9917ca8e30aa3f986e6d5b177d
+  78814e84a217894517c2de392b903ed05e6871a4 0613c8e59a3ddb9789072ef52f1ed13496489bb4
+  $ cat dest/.hg/shamap
+  333546584845f70c4cfecb992341aaef0e708166 a4a1dae0fe3514cefd9b8541b7abbc8f44f946d5
+  0394b0d5e4f761ced559fd0bbdc6afc16cb3f7d1 a4a1dae0fe3514cefd9b8541b7abbc8f44f946d5
+  0e6e235919dd8e9285ba8eb5adf703af9ad99378 bd51f17597bf32268e68a560b206898c3960cda2
+  86a55cb968d51770cba2a1630d6cc637b574580a ab40a95b00725307e79c2fd271000aa8af9759f4
+  717e9b37cdb7eb9917ca8e30aa3f986e6d5b177d f7cff662c5e581e6f3f1a85ffdd2bcb35825f6ba
+  0613c8e59a3ddb9789072ef52f1ed13496489bb4 78814e84a217894517c2de392b903ed05e6871a4
+
+Verify meta data converted correctly:
+
+  $ hg -R dest log -r 1 --debug -p --git
+  changeset:   1:bd51f17597bf32268e68a560b206898c3960cda2
+  phase:       draft
+  parent:      0:a4a1dae0fe3514cefd9b8541b7abbc8f44f946d5
+  parent:      -1:0000000000000000000000000000000000000000
+  manifest:    1:040c72ed9b101773c24ac314776bfc846943781f
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  files+:      b e
+  extra:       branch=default
+  description:
+  3: copy a to e, change b
+  
+  
+  diff --git a/b b/b
+  new file mode 100644
+  --- /dev/null
+  +++ b/b
+  @@ -0,0 +1,1 @@
+  +b
+  diff --git a/a b/e
+  copy from a
+  copy to e
+  
+Verify files included and excluded correctly:
+
+  $ hg -R dest manifest -r tip
+  0
+  a
+  b
+  e
+
+
+Make changes in dest and convert back:
+
+  $ hg -R dest up -q
+  $ echo dest > dest/dest
+  $ hg -R dest ci -Aqm 'change in dest'
+  $ hg -R dest tip
+  changeset:   5:a2e0e3cc6d1d
+  tag:         tip
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  summary:     change in dest
+  
+
+(converting merges back after using a filemap will probably cause chaos so we
+exclude merges.)
+
+  $ hg convert dest source --config convert.hg.revs='!merge()'
+  scanning source...
+  sorting...
+  converting...
+  0 change in dest
+
+Verify the conversion back:
+
+  $ hg -R source log --debug -r tip
+  changeset:   7:e6d364a69ff1248b2099e603b0c145504cade6f0
+  tag:         tip
+  phase:       draft
+  parent:      6:0613c8e59a3ddb9789072ef52f1ed13496489bb4
+  parent:      -1:0000000000000000000000000000000000000000
+  manifest:    7:aa3e9542f3b76d4f1f1b2e9c7ce9dbb48b6a95ec
+  user:        test
+  date:        Thu Jan 01 00:00:00 1970 +0000
+  files+:      dest
+  extra:       branch=default
+  description:
+  change in dest
+  
+  
+Files that had been excluded are still present:
+
+  $ hg -R source manifest -r tip
+  0
+  a
+  b
+  dest
+  dir/b
+  dir/c
+  dir/d
+  e
+
+More source changes
+
+  $ cd source
+  $ echo 1 >> a
+  $ hg ci -m '8: source first branch'
+  created new head
+  $ hg up -qr -2
+  $ echo 2 >> a
+  $ hg ci -m '9: source second branch'
+  $ hg merge -q --tool internal:local
+  $ hg ci -m '10: source merge'
+  $ echo >> a
+  $ hg ci -m '11: source change'
+
+  $ hg mani
+  0
+  a
+  b
+  dest
+  dir/b
+  dir/c
+  dir/d
+  e
+
+  $ glog -r 6:
+  @  11 0c8927d1f7f4 "11: source change" files: a
+  |
+  o    10 9ccb7ee8d261 "10: source merge" files: a
+  |\
+  | o  9 f131b1518dba "9: source second branch" files: a
+  | |
+  o |  8 669cf0e74b50 "8: source first branch" files: a
+  | |
+  | o  7 e6d364a69ff1 "change in dest" files: dest
+  |/
+  o  6 0613c8e59a3d "6: change a" files: a
+  |
+  $ cd ..
+
+  $ hg convert --filemap filemap source dest --config convert.hg.revs=3:
+  scanning source...
+  sorting...
+  converting...
+  3 8: source first branch
+  2 9: source second branch
+  1 10: source merge
+  0 11: source change
+
+  $ glog -R dest
+  o  9 8432d597b263 "11: source change" files: a
+  |
+  o    8 632ffacdcd6f "10: source merge" files: a
+  |\
+  | o  7 049cfee90ee6 "9: source second branch" files: a
+  | |
+  o |  6 9b6845e036e5 "8: source first branch" files: a
+  | |
+  | @  5 a2e0e3cc6d1d "change in dest" files: dest
+  |/
+  o  4 78814e84a217 "6: change a" files: a
+  |
+  o    3 f7cff662c5e5 "5: merge 2 and 3, copy b to dir/d" files: e
+  |\
+  | o  2 ab40a95b0072 "4: change a" files: a
+  | |
+  o |  1 bd51f17597bf "3: copy a to e, change b" files: b e
+  |/
+  o  0 a4a1dae0fe35 "1: add a and dir/b" files: 0 a
+  
+  $ cd ..