diff -r 60896df503ba -r 5c8d5f980f49 tests/test-topic-change.t
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-topic-change.t	Thu Oct 05 18:13:52 2017 +0530
@@ -0,0 +1,370 @@
+Tests for changing and clearing topics
+======================================
+
+  $ . "$TESTDIR/testlib/topic_setup.sh"
+  $ cat <<EOF >> $HGRCPATH
+  > [experimental]
+  > # disable the new graph style until we drop 3.7 support
+  > graphstyle.missing = |
+  > evolution=createmarkers, allowunstable
+  > [phases]
+  > publish=false
+  > [alias]
+  > glog = log -G -T "{rev}:{node|short} \{{topics}}\n{desc}  ({bookmarks})\n\n"
+  > EOF
+
+About the glog output: {} contains the topic name and () will contain the bookmark
+
+Setting up a repo
+----------------
+
+  $ hg init topics
+  $ cd topics
+  $ for ch in {a..h}; do touch $ch; echo "foo" >> $ch; hg ci -Aqm "Added "$ch; done
+
+  $ hg glog
+  @  7:ec2426147f0e {}
+  |  Added h  ()
+  |
+  o  6:87d6d6676308 {}
+  |  Added g  ()
+  |
+  o  5:825660c69f0c {}
+  |  Added f  ()
+  |
+  o  4:aa98ab95a928 {}
+  |  Added e  ()
+  |
+  o  3:62615734edd5 {}
+  |  Added d  ()
+  |
+  o  2:28ad74487de9 {}
+  |  Added c  ()
+  |
+  o  1:29becc82797a {}
+  |  Added b  ()
+  |
+  o  0:18d04c59bb5d {}
+     Added a  ()
+  
+
+Clearing topic from revision without topic
+
+  $ hg topic -r . --clear
+  changed topic on 0 changes
+
+Clearing current topic when no active topic is not error
+
+  $ hg topic
+  $ hg topic --clear
+
+Setting topics to all the revisions
+
+  $ hg topic -r 0:: foo
+  switching to topic foo
+  changed topic on 8 changes
+  $ hg glog
+  @  15:05095f607171 {foo}
+  |  Added h  ()
+  |
+  o  14:97505b53ab0d {foo}
+  |  Added g  ()
+  |
+  o  13:75a8360fe626 {foo}
+  |  Added f  ()
+  |
+  o  12:abcedffeae90 {foo}
+  |  Added e  ()
+  |
+  o  11:1315a3808ed0 {foo}
+  |  Added d  ()
+  |
+  o  10:1fa891977a22 {foo}
+  |  Added c  ()
+  |
+  o  9:a53ba98dd6b8 {foo}
+  |  Added b  ()
+  |
+  o  8:86a186070af2 {foo}
+     Added a  ()
+  
+
+Clearing the active topic using --clear
+
+  $ hg topic
+   * foo
+  $ hg topic --clear
+  $ hg topic
+     foo
+Changing topics on some revisions (also testing issue 5441)
+
+  $ hg topic -r 12:: bar
+  switching to topic bar
+  changed topic on 4 changes
+  $ hg glog
+  @  19:d7d36e193ea7 {bar}
+  |  Added h  ()
+  |
+  o  18:e7b418d79a05 {bar}
+  |  Added g  ()
+  |
+  o  17:82e0b14f4d9e {bar}
+  |  Added f  ()
+  |
+  o  16:edc4a6b9ea60 {bar}
+  |  Added e  ()
+  |
+  o  11:1315a3808ed0 {foo}
+  |  Added d  ()
+  |
+  o  10:1fa891977a22 {foo}
+  |  Added c  ()
+  |
+  o  9:a53ba98dd6b8 {foo}
+  |  Added b  ()
+  |
+  o  8:86a186070af2 {foo}
+     Added a  ()
+  
+
+Changing topics without passing topic name and clear
+
+  $ hg topic -r .
+  abort: changing topic requires a topic name or --clear
+  [255]
+
+Changing topic using --current flag
+
+  $ hg topic foobar
+  $ hg topic -r . --current
+  active topic 'foobar' grew its first changeset
+  changed topic on 1 changes
+  $ hg glog -r .
+  @  20:c2d6b7df5dcf {foobar}
+  |  Added h  ()
+  |
+
+Changing topic in between the stack
+
+  $ hg topic -r 9::10 --current
+  changed topic on 2 changes
+  $ hg glog
+  o  22:1b88140feefe {foobar}
+  |  Added c  ()
+  |
+  o  21:c39cabfcbbf7 {foobar}
+  |  Added b  ()
+  |
+  | @  20:c2d6b7df5dcf {foobar}
+  | |  Added h  ()
+  | |
+  | o  18:e7b418d79a05 {bar}
+  | |  Added g  ()
+  | |
+  | o  17:82e0b14f4d9e {bar}
+  | |  Added f  ()
+  | |
+  | o  16:edc4a6b9ea60 {bar}
+  | |  Added e  ()
+  | |
+  | o  11:1315a3808ed0 {foo}
+  | |  Added d  ()
+  | |
+  | x  10:1fa891977a22 {foo}
+  | |  Added c  ()
+  | |
+  | x  9:a53ba98dd6b8 {foo}
+  |/   Added b  ()
+  |
+  o  8:86a186070af2 {foo}
+     Added a  ()
+  
+  $ hg rebase -s 11 -d 22
+  rebasing 11:1315a3808ed0 "Added d" (foo)
+  switching to topic foo
+  rebasing 16:edc4a6b9ea60 "Added e" (bar)
+  switching to topic bar
+  rebasing 17:82e0b14f4d9e "Added f" (bar)
+  rebasing 18:e7b418d79a05 "Added g" (bar)
+  rebasing 20:c2d6b7df5dcf "Added h" (foobar)
+  switching to topic foobar
+
+  $ hg glog
+  @  27:a1a9465da59b {foobar}
+  |  Added h  ()
+  |
+  o  26:7c76c271395f {bar}
+  |  Added g  ()
+  |
+  o  25:7f26084dfaf1 {bar}
+  |  Added f  ()
+  |
+  o  24:b1f05e9ba0b5 {bar}
+  |  Added e  ()
+  |
+  o  23:f9869da2286e {foo}
+  |  Added d  ()
+  |
+  o  22:1b88140feefe {foobar}
+  |  Added c  ()
+  |
+  o  21:c39cabfcbbf7 {foobar}
+  |  Added b  ()
+  |
+  o  8:86a186070af2 {foo}
+     Added a  ()
+  
+Amending a topic
+----------------
+
+When the changeset has a topic and we have different active topic
+
+  $ hg topic wat
+  $ hg ci --amend
+  active topic 'wat' grew its first changeset
+  $ hg glog -r .
+  @  28:61470c956807 {wat}
+  |  Added h  ()
+  |
+
+Clear the current topic and amending
+
+  $ hg topic --clear
+  $ hg ci --amend
+  $ hg glog -r .
+  @  29:b584fa49f42e {}
+  |  Added h  ()
+  |
+
+When the changeset does not has a topic but we have an active topic
+
+  $ hg topic watwat
+  marked working directory as topic: watwat
+  $ hg ci --amend
+  active topic 'watwat' grew its first changeset
+  $ hg glog -r .
+  @  30:a24c31c35013 {watwat}
+  |  Added h  ()
+  |
+
+Testing changing topics on public changeset
+-------------------------------------------
+
+  $ hg phase -r 8 -p
+
+Clearing the topic
+
+  $ hg topic -r 8 --clear
+  abort: can't change topic of a public change
+  [255]
+
+Changing the topic
+
+  $ hg topic -r 8 foobarboo
+  abort: can't change topic of a public change
+  [255]
+
+Testing the bookmark movement
+-----------------------------
+
+  $ hg bookmark book
+  $ hg glog
+  @  30:a24c31c35013 {watwat}
+  |  Added h  (book)
+  |
+  o  26:7c76c271395f {bar}
+  |  Added g  ()
+  |
+  o  25:7f26084dfaf1 {bar}
+  |  Added f  ()
+  |
+  o  24:b1f05e9ba0b5 {bar}
+  |  Added e  ()
+  |
+  o  23:f9869da2286e {foo}
+  |  Added d  ()
+  |
+  o  22:1b88140feefe {foobar}
+  |  Added c  ()
+  |
+  o  21:c39cabfcbbf7 {foobar}
+  |  Added b  ()
+  |
+  o  8:86a186070af2 {}
+     Added a  ()
+  
+On clearing the topic
+XXX: the bookmark must have moved
+
+  $ hg topic -r . --clear
+  clearing empty topic "watwat"
+  active topic 'watwat' is now empty
+  changed topic on 1 changes
+
+  $ hg glog
+  @  31:c48d6d71b2d9 {}
+  |  Added h  ()
+  |
+  | x  30:a24c31c35013 {watwat}
+  |/   Added h  (book)
+  |
+  o  26:7c76c271395f {bar}
+  |  Added g  ()
+  |
+  o  25:7f26084dfaf1 {bar}
+  |  Added f  ()
+  |
+  o  24:b1f05e9ba0b5 {bar}
+  |  Added e  ()
+  |
+  o  23:f9869da2286e {foo}
+  |  Added d  ()
+  |
+  o  22:1b88140feefe {foobar}
+  |  Added c  ()
+  |
+  o  21:c39cabfcbbf7 {foobar}
+  |  Added b  ()
+  |
+  o  8:86a186070af2 {}
+     Added a  ()
+  
+
+On changing the topic
+XXX: the bookmark must have moved
+
+  $ hg bookmark bookboo
+  $ hg topic -r . movebook
+  switching to topic movebook
+  changed topic on 1 changes
+  $ hg glog
+  @  32:1b83d11095b9 {movebook}
+  |  Added h  ()
+  |
+  | x  31:c48d6d71b2d9 {}
+  |/   Added h  (bookboo)
+  |
+  | x  30:a24c31c35013 {watwat}
+  |/   Added h  (book)
+  |
+  o  26:7c76c271395f {bar}
+  |  Added g  ()
+  |
+  o  25:7f26084dfaf1 {bar}
+  |  Added f  ()
+  |
+  o  24:b1f05e9ba0b5 {bar}
+  |  Added e  ()
+  |
+  o  23:f9869da2286e {foo}
+  |  Added d  ()
+  |
+  o  22:1b88140feefe {foobar}
+  |  Added c  ()
+  |
+  o  21:c39cabfcbbf7 {foobar}
+  |  Added b  ()
+  |
+  o  8:86a186070af2 {}
+     Added a  ()
+