--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-grab.t	Thu Jan 11 20:03:20 2018 +0530
@@ -0,0 +1,243 @@
+Test for the grab command
+
+  $ cat >> $HGRCPATH <<EOF
+  > [alias]
+  > glog = log -G -T "{rev}:{node|short} {desc}\n"
+  > [extensions]
+  > EOF
+  $ echo "evolve=$(echo $(dirname $TESTDIR))/hgext3rd/evolve/" >> $HGRCPATH
+
+  $ mkcommit() {
+  >    echo "$1" > "$1"
+  >    hg add "$1"
+  >    hg ci -m "add $1"
+  > }
+
+  $ hg init repo
+  $ cd repo
+  $ hg help grab
+  hg grab [-r] rev
+  
+  grabs a commit, move it on the top of working directory parent and
+      updates to it.
+  
+  options:
+  
+   -r --rev VALUE revision to grab
+      --continue  continue interrupted grab
+      --abort     abort interrupted grab
+  
+  (some details hidden, use --verbose to show complete help)
+
+  $ mkcommit a
+  $ mkcommit b
+  $ mkcommit c
+
+  $ hg glog
+  @  2:4538525df7e2 add c
+  |
+  o  1:7c3bad9141dc add b
+  |
+  o  0:1f0dee641bb7 add a
+  
+
+Grabbing an ancestor
+
+  $ hg grab -r 7c3bad9141dc
+  abort: cannot grab an ancestor revision
+  [255]
+
+Specifying multiple revisions to grab
+
+  $ hg grab 1f0dee641bb7 -r 7c3bad9141dc
+  abort: specify just one revision
+  [255]
+
+Specifying no revisions to grab
+
+  $ hg grab
+  abort: empty revision set
+  [255]
+
+Continuing without interrupted grab
+
+  $ hg grab --continue
+  abort: no interrupted grab state exists
+  [255]
+
+Aborting without interrupted grab
+
+  $ hg grab --abort
+  abort: no interrupted grab state exists
+  [255]
+
+Specifying both continue and revs
+
+  $ hg up 1f0dee641bb7
+  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
+  $ hg grab -r 4538525df7e2 --continue
+  abort: cannot specify both --continue and revision
+  [255]
+
+Making new branch heads
+
+  $ mkcommit x
+  created new head
+  $ mkcommit y
+
+  $ hg glog
+  @  4:d46dc301d92f add y
+  |
+  o  3:8e224524cd09 add x
+  |
+  | o  2:4538525df7e2 add c
+  | |
+  | o  1:7c3bad9141dc add b
+  |/
+  o  0:1f0dee641bb7 add a
+  
+Grabbing a revision
+
+  $ hg grab 7c3bad9141dc
+  grabbing 1:7c3bad9141dc "add b"
+  1 new orphan changesets
+  $ hg glog
+  @  5:7c15c05db6fa add b
+  |
+  o  4:d46dc301d92f add y
+  |
+  o  3:8e224524cd09 add x
+  |
+  | *  2:4538525df7e2 add c
+  | |
+  | x  1:7c3bad9141dc add b
+  |/
+  o  0:1f0dee641bb7 add a
+  
+
+When grab does not create any changes
+
+  $ hg graft -r 4538525df7e2
+  grafting 2:4538525df7e2 "add c"
+
+  $ hg glog
+  @  6:c4636a81ebeb add c
+  |
+  o  5:7c15c05db6fa add b
+  |
+  o  4:d46dc301d92f add y
+  |
+  o  3:8e224524cd09 add x
+  |
+  | *  2:4538525df7e2 add c
+  | |
+  | x  1:7c3bad9141dc add b
+  |/
+  o  0:1f0dee641bb7 add a
+  
+  $ hg grab -r 4538525df7e2
+  grabbing 2:4538525df7e2 "add c"
+  note: grab of 2:4538525df7e2 created no changes to commit
+
+  $ hg glog
+  @  6:c4636a81ebeb add c
+  |
+  o  5:7c15c05db6fa add b
+  |
+  o  4:d46dc301d92f add y
+  |
+  o  3:8e224524cd09 add x
+  |
+  o  0:1f0dee641bb7 add a
+  
+interrupted grab
+
+  $ hg up d46dc301d92f
+  0 files updated, 0 files merged, 2 files removed, 0 files unresolved
+  $ echo foo > c
+  $ hg ci -Aqm "foo to c"
+  $ hg grab -r c4636a81ebeb
+  grabbing 6:c4636a81ebeb "add c"
+  merging c
+  warning: conflicts while merging c! (edit, then use 'hg resolve --mark')
+  unresolved merge conflicts (see hg help resolve)
+  [1]
+
+  $ echo foobar > c
+  $ hg resolve --all --mark
+  (no more unresolved files)
+  $ hg grab --continue
+  $ hg glog
+  @  8:44e155eb95c7 add c
+  |
+  o  7:2ccc03d1d096 foo to c
+  |
+  | o  5:7c15c05db6fa add b
+  |/
+  o  4:d46dc301d92f add y
+  |
+  o  3:8e224524cd09 add x
+  |
+  o  0:1f0dee641bb7 add a
+  
+Testing the abort functionality of hg grab
+
+  $ echo foo > b
+  $ hg ci -Aqm "foo to b"
+  $ hg glog -r .^::
+  @  9:902d4f4602bb foo to b
+  |
+  o  8:44e155eb95c7 add c
+  |
+  ~
+
+  $ hg grab -r 7c15c05db6fa
+  grabbing 5:7c15c05db6fa "add b"
+  merging b
+  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
+  unresolved merge conflicts (see hg help resolve)
+  [1]
+
+  $ hg grab --abort
+  aborting grab, updating to 902d4f4602bb
+
+  $ hg glog
+  @  9:902d4f4602bb foo to b
+  |
+  o  8:44e155eb95c7 add c
+  |
+  o  7:2ccc03d1d096 foo to c
+  |
+  | o  5:7c15c05db6fa add b
+  |/
+  o  4:d46dc301d92f add y
+  |
+  o  3:8e224524cd09 add x
+  |
+  o  0:1f0dee641bb7 add a
+  
+
+Trying to grab a public changeset
+
+  $ hg phase -r 7c15c05db6fa -p
+
+  $ hg grab -r 7c15c05db6fa
+  abort: cannot grab public changesets: 7c15c05db6fa
+  (see 'hg help phases' for details)
+  [255]
+
+  $ hg glog
+  @  9:902d4f4602bb foo to b
+  |
+  o  8:44e155eb95c7 add c
+  |
+  o  7:2ccc03d1d096 foo to c
+  |
+  | o  5:7c15c05db6fa add b
+  |/
+  o  4:d46dc301d92f add y
+  |
+  o  3:8e224524cd09 add x
+  |
+  o  0:1f0dee641bb7 add a
+