tests: add test for widening from an empty clone

Narrow clones that track no paths currently don't even include the
root manifest (which is the only manifest when using flat
manifests). That means that when we widen from such a clone, we need
to make sure that we send the root manifest (and other manifests if
using tree manifests). That currently works because we always resend
all manifest that match the new narrowspec. However, we're about to
stop resending manifests that the client already has and there's a
risk of this breaking then, so let's add a test.

Differential Revision: https://phab.mercurial-scm.org/D5143

tests/test-narrow-widen-no-ellipsis.t

@@ -1,406 +1,419 b''
 #testcases tree flat
   $ . "$TESTDIR/narrow-library.sh"
 
 #if tree
   $ cat << EOF >> $HGRCPATH
   > [experimental]
   > treemanifest = 1
   > EOF
 #endif
 
   $ hg init master
   $ cd master
 
   $ mkdir inside
   $ echo 'inside' > inside/f
   $ hg add inside/f
   $ hg commit -m 'add inside'
 
   $ mkdir widest
   $ echo 'widest' > widest/f
   $ hg add widest/f
   $ hg commit -m 'add widest'
 
   $ mkdir outside
   $ echo 'outside' > outside/f
   $ hg add outside/f
   $ hg commit -m 'add outside'
 
   $ cd ..
 
 narrow clone the inside file
 
-  $ hg clone --narrow ssh://user@dummy/master narrow --include inside
+  $ hg clone --narrow ssh://user@dummy/master narrow
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
-  added 3 changesets with 1 changes to 1 files
+  added 3 changesets with 0 changes to 0 files
   new changesets *:* (glob)
   updating to branch default
-  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd narrow
   $ hg tracked
+  $ hg files
+  [1]
+
+widen from an empty clone
+
+  $ hg tracked --addinclude inside
+  comparing with ssh://user@dummy/master
+  searching for changes
+  adding changesets
+  adding manifests
+  adding file changes
+  added 0 changesets with 1 changes to 1 files
+  $ hg tracked
   I path:inside
   $ ls
   inside
   $ cat inside/f
   inside
   $ cd ..
 
 add more upstream files which we will include in a wider narrow spec
 
   $ cd master
 
   $ mkdir wider
   $ echo 'wider' > wider/f
   $ hg add wider/f
   $ echo 'widest v2' > widest/f
   $ hg commit -m 'add wider, update widest'
 
   $ echo 'widest v3' > widest/f
   $ hg commit -m 'update widest v3'
 
   $ echo 'inside v2' > inside/f
   $ hg commit -m 'update inside'
 
   $ mkdir outside2
   $ echo 'outside2' > outside2/f
   $ hg add outside2/f
   $ hg commit -m 'add outside2'
 
   $ echo 'widest v4' > widest/f
   $ hg commit -m 'update widest v4'
 
   $ hg log -T "{if(ellipsis, '...')}{rev}: {desc}\n"
   7: update widest v4
   6: add outside2
   5: update inside
   4: update widest v3
   3: add wider, update widest
   2: add outside
   1: add widest
   0: add inside
 
   $ cd ..
 
 Widen the narrow spec to see the widest file. This should not get the newly
 added upstream revisions.
 
   $ cd narrow
   $ hg id -n
   2
 
   $ hg tracked --addinclude widest/f --debug
   comparing with ssh://user@dummy/master
   running python "*dummyssh" *user@dummy* *hg -R master serve --stdio* (glob)
   sending hello command
   sending between command
   remote: * (glob)
   remote: capabilities: * (glob)
   remote: 1
   sending protocaps command
   query 1; heads
   sending batch command
   searching for changes
   all local heads known remotely
   sending narrow_widen command
   bundle2-input-bundle: with-transaction
   bundle2-input-part: "changegroup" (params: * mandatory) supported (glob)
   adding changesets
   adding manifests
   adding widest/ revisions (tree !)
   adding file changes
   adding widest/f revisions (tree !)
   added 0 changesets with 1 changes to 1 files
   bundle2-input-part: total payload size * (glob)
   bundle2-input-bundle: 0 parts total
    widest/f: add from widened narrow clone -> g
   getting widest/f
   $ hg tracked
   I path:inside
   I path:widest/f
 
   $ cat widest/f
   widest
 
   $ hg id -n
   2
 
 Pull down the newly added upstream revision.
 
   $ hg pull
   pulling from ssh://user@dummy/master
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 5 changesets with 4 changes to 2 files
   new changesets *:* (glob)
   (run 'hg update' to get a working copy)
   $ hg update -r 'desc("add wider")'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
   $ cat widest/f
   widest v2
 
   $ hg update -r 'desc("update inside")'
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat widest/f
   widest v3
   $ cat inside/f
   inside v2
 
   $ hg log -T "{if(ellipsis, '...')}{rev}: {desc}\n"
   7: update widest v4
   6: add outside2
   5: update inside
   4: update widest v3
   3: add wider, update widest
   2: add outside
   1: add widest
   0: add inside
 
 Check that widening with a newline fails
 
   $ hg tracked --addinclude 'widest
   > '
   abort: newlines are not allowed in narrowspec paths
   [255]
 
 widen the narrow spec to include the wider file
 
   $ hg tracked --addinclude wider
   comparing with ssh://user@dummy/master
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 0 changesets with 1 changes to 1 files
   $ hg tracked
   I path:inside
   I path:wider
   I path:widest/f
   $ hg update 'desc("add widest")'
   2 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ cat widest/f
   widest
   $ hg update 'desc("add wider, update widest")'
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat wider/f
   wider
   $ cat widest/f
   widest v2
   $ hg update 'desc("update widest v3")'
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat widest/f
   widest v3
   $ hg update 'desc("update widest v4")'
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cat widest/f
   widest v4
 
   $ hg log -T "{if(ellipsis, '...')}{rev}: {desc}\n"
   7: update widest v4
   6: add outside2
   5: update inside
   4: update widest v3
   3: add wider, update widest
   2: add outside
   1: add widest
   0: add inside
 
 separate suite of tests: files from 0-10 modified in changes 0-10. This allows
 more obvious precise tests tickling particular corner cases.
 
   $ cd ..
   $ hg init upstream
   $ cd upstream
   $ for x in `$TESTDIR/seq.py 0 10`
   > do
   >   mkdir d$x
   >   echo $x > d$x/f
   >   hg add d$x/f
   >   hg commit -m "add d$x/f"
   > done
   $ hg log -T "{rev}: {desc}\n"
   10: add d10/f
   9: add d9/f
   8: add d8/f
   7: add d7/f
   6: add d6/f
   5: add d5/f
   4: add d4/f
   3: add d3/f
   2: add d2/f
   1: add d1/f
   0: add d0/f
 
 make narrow clone with every third node.
 
   $ cd ..
   $ hg clone --narrow ssh://user@dummy/upstream narrow2 --include d0 --include d3 --include d6 --include d9
   requesting all changes
   adding changesets
   adding manifests
   adding file changes
   added 11 changesets with 4 changes to 4 files
   new changesets *:* (glob)
   updating to branch default
   4 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd narrow2
   $ hg tracked
   I path:d0
   I path:d3
   I path:d6
   I path:d9
   $ hg verify
   checking changesets
   checking manifests
   checking directory manifests (tree !)
   crosschecking files in changesets and manifests
   checking files
   checked 11 changesets with 4 changes to 4 files
   $ hg log -T "{if(ellipsis, '...')}{rev}: {desc}\n"
   10: add d10/f
   9: add d9/f
   8: add d8/f
   7: add d7/f
   6: add d6/f
   5: add d5/f
   4: add d4/f
   3: add d3/f
   2: add d2/f
   1: add d1/f
   0: add d0/f
   $ hg tracked --addinclude d1
   comparing with ssh://user@dummy/upstream
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 0 changesets with 1 changes to 1 files
   $ hg tracked
   I path:d0
   I path:d1
   I path:d3
   I path:d6
   I path:d9
   $ hg log -T "{if(ellipsis, '...')}{rev}: {desc}\n"
   10: add d10/f
   9: add d9/f
   8: add d8/f
   7: add d7/f
   6: add d6/f
   5: add d5/f
   4: add d4/f
   3: add d3/f
   2: add d2/f
   1: add d1/f
   0: add d0/f
 
 Verify shouldn't claim the repo is corrupt after a widen.
 
   $ hg verify
   checking changesets
   checking manifests
   checking directory manifests (tree !)
   crosschecking files in changesets and manifests
   checking files
   checked 11 changesets with 5 changes to 5 files
 
 Widening preserves parent of local commit
 
   $ cd ..
   $ hg clone -q --narrow ssh://user@dummy/upstream narrow3 --include d2 -r 2
   $ cd narrow3
   $ hg log -T "{if(ellipsis, '...')}{rev}: {desc}\n"
   2: add d2/f
   1: add d1/f
   0: add d0/f
   $ hg pull -q -r 3
   $ hg co -q tip
   $ hg pull -q -r 4
   $ echo local > d2/f
   $ hg ci -m local
   created new head
   $ hg tracked -q --addinclude d0 --addinclude d9
 
 Widening preserves bookmarks
 
   $ cd ..
   $ hg clone -q --narrow ssh://user@dummy/upstream narrow-bookmarks --include d4
   $ cd narrow-bookmarks
   $ echo local > d4/f
   $ hg ci -m local
   $ hg bookmarks bookmark
   $ hg bookmarks
    * bookmark                  11:* (glob)
   $ hg -q tracked --addinclude d2
   $ hg bookmarks
    * bookmark                  11:* (glob)
   $ hg log -r bookmark -T '{desc}\n'
   local
 
 Widening that fails can be recovered from
 
   $ cd ..
   $ hg clone -q --narrow ssh://user@dummy/upstream interrupted --include d0
   $ cd interrupted
   $ echo local > d0/f
   $ hg ci -m local
   $ hg log -T "{if(ellipsis, '...')}{rev}: {desc}\n"
   11: local
   10: add d10/f
   9: add d9/f
   8: add d8/f
   7: add d7/f
   6: add d6/f
   5: add d5/f
   4: add d4/f
   3: add d3/f
   2: add d2/f
   1: add d1/f
   0: add d0/f
   $ hg bookmarks bookmark
   $ hg --config hooks.pretxnchangegroup.bad=false tracked --addinclude d1
   comparing with ssh://user@dummy/upstream
   searching for changes
   adding changesets
   adding manifests
   adding file changes
   added 0 changesets with 1 changes to 1 files
   $ hg log -T "{if(ellipsis, '...')}{rev}: {desc}\n"
   11: local
   10: add d10/f
   9: add d9/f
   8: add d8/f
   7: add d7/f
   6: add d6/f
   5: add d5/f
   4: add d4/f
   3: add d3/f
   2: add d2/f
   1: add d1/f
   0: add d0/f
   $ hg bookmarks
    * bookmark                  11:* (glob)
   $ hg unbundle .hg/strip-backup/*-widen.hg
   abort: .hg/strip-backup/*-widen.hg: $ENOTDIR$ (windows !)
   abort: $ENOENT$: .hg/strip-backup/*-widen.hg (no-windows !)
   [255]
   $ hg log -T "{if(ellipsis, '...')}{rev}: {desc}\n"
   11: local
   10: add d10/f
   9: add d9/f
   8: add d8/f
   7: add d7/f
   6: add d6/f
   5: add d5/f
   4: add d4/f
   3: add d3/f
   2: add d2/f
   1: add d1/f
   0: add d0/f
   $ hg bookmarks
    * bookmark                  11:* (glob)