$ . "$TESTDIR/testlib"

Initial setup

  $ cat << EOF >> $HGRCPATH

  > [ui]

  > logtemplate = {rev} {branch} \{{get(namespaces, "topics")}} {phase} {desc|firstline}\n

  > [experimental]

  > evolution=createmarkers,exchange,allowunstable

  > EOF

(new head warning seems buggy)

  $ hg init main

  $ cd main

  $ echo aaa > aaa

  $ hg add aaa

  $ hg commit -m c_a

  $ echo aaa > bbb

  $ hg add bbb

  $ hg commit -m c_b

  $ hg topic foo

  $ echo aaa > ccc

  $ hg add ccc

  $ hg commit -m c_c

  $ echo aaa > ddd

  $ hg add ddd

  $ hg commit -m c_d

  created new head

  $ echo aaa > eee

  $ hg add eee

  $ hg commit -m c_e

  created new head

  $ echo aaa > fff

  $ hg add fff

  $ hg commit -m c_f

  created new head

  $ hg log -G

  @  5 default {foo} draft c_f

  |

  o  4 default {foo} draft c_e

  |

  o  3 default {foo} draft c_d

  |

  o  2 default {foo} draft c_c

  |

  o  1 default {} draft c_b

  |

  o  0 default {} draft c_a

Simple test

-----------

hg topic -l list all changeset in the topic

  $ hg topic

   * foo

  $ hg topic --list

  t0: c_c

  t1: c_d

  t2: c_e

error case, nothing to list

  $ hg topic --clear

  $ hg topic --list

  abort: no active topic to list

  [255]

Test "t#" reference

-------------------

  $ hg up t1

  abort: cannot resolve "t1": no active topic

  [255]

  $ hg topic foo

  $ hg up t42

  abort: cannot resolve "t42": topic "foo" has only 4 changesets

  [255]

  $ hg up t1

  0 files updated, 0 files merged, 2 files removed, 0 files unresolved

Case with some of the topic unstable

------------------------------------

  $ echo bbb > ddd

  $ hg commit --amend

  $ hg log -G

  @  7 default {foo} draft c_d

  |

  | o  5 default {foo} draft c_f

  | |

  | o  4 default {foo} draft c_e

  | |

  | x  3 default {foo} draft c_d

  |/

  o  2 default {foo} draft c_c

  |

  o  1 default {} draft c_b

  |

  o  0 default {} draft c_a

  $ hg topic --list

  t0: c_c