$ hg init debugrevlog

  $ cd debugrevlog

  $ echo a > a

  $ hg ci -Am adda

  adding a

  $ hg debugrevlog -m

  format : 1

  flags  : inline

  revisions     :  1

      merges    :  0 ( 0.00%)

      normal    :  1 (100.00%)

  revisions     :  1

      full      :  1 (100.00%)

      deltas    :  0 ( 0.00%)

  revision size : 44

      full      : 44 (100.00%)

      deltas    :  0 ( 0.00%)

  avg chain length  : 0

  compression ratio : 0

  uncompressed data size (min/max/avg) : 43 / 43 / 43

  full revision size (min/max/avg)     : 44 / 44 / 44

  delta size (min/max/avg)             : 0 / 0 / 0

Test max chain len

  $ cat >> $HGRCPATH << EOF

  > [format]

  > maxchainlen=4

  > EOF

  $ printf "This test checks if maxchainlen config value is respected also it can serve as basic test for debugrevlog -d <file>.\n" >> a

  $ hg ci -m a

  $ printf "b\n" >> a

  $ hg ci -m a

  $ printf "c\n" >> a

  $ hg ci -m a

  $ printf "d\n" >> a

  $ hg ci -m a

  $ printf "e\n" >> a

  $ hg ci -m a

  $ printf "f\n" >> a

  $ hg ci -m a

  $ printf 'g\n' >> a

  $ hg ci -m a

  $ printf 'h\n' >> a

  $ hg ci -m a

  $ hg debugrevlog -d a

  # rev p1rev p2rev start   end deltastart base   p1   p2 rawsize totalsize compression heads chainlen

      0    -1    -1     0   ???          0    0    0    0     ???      ????           ?     1        0 (glob)

      1     0    -1   ???   ???          0    0    0    0     ???      ????           ?     1        1 (glob)

      2     1    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        2 (glob)

      3     2    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        3 (glob)

      4     3    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        4 (glob)

      5     4    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        0 (glob)

      6     5    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        1 (glob)

      7     6    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        2 (glob)

      8     7    -1   ???   ???        ???  ???  ???    0     ???      ????           ?     1        3 (glob)

  $ cd ..

Test internal debugstacktrace command

  $ cat > debugstacktrace.py << EOF

  > from mercurial.util import debugstacktrace, dst, sys

  > def f():

  >     dst('hello world')

  > def g():

  >     f()

  >     debugstacktrace(skip=-5, f=sys.stdout)

  > g()

  > EOF

  $ python debugstacktrace.py

  hello world at:

   debugstacktrace.py:7 in * (glob)

   debugstacktrace.py:5 in g

   debugstacktrace.py:3 in f

  stacktrace at:

   debugstacktrace.py:7 *in * (glob)

   debugstacktrace.py:6 *in g (glob)

   */util.py:* in debugstacktrace (glob)