tests/test-rhg.t

copies: add a HASCOPIESINFO flag to highlight rev with useful data

If some files changes that may impact copy tracing are detected, we set this
flag. This helps the copy tracing algorithm to skip fetching possibly expensive
data when unnecessary.

Differential Revision: https://phab.mercurial-scm.org/D9139

#require rust

Define an rhg function that will only run if rhg exists
  $ rhg() {
  > if [ -f "$RUNTESTDIR/../rust/target/debug/rhg" ]; then
  >   "$RUNTESTDIR/../rust/target/debug/rhg" "$@"
  > else
  >   echo "skipped: Cannot find rhg. Try to run cargo build in rust/rhg."
  >   exit 80
  > fi
  > }

Unimplemented command
  $ rhg unimplemented-command
  error: Found argument 'unimplemented-command' which wasn't expected, or isn't valid in this context
  
  USAGE:
      rhg <SUBCOMMAND>
  
  For more information try --help
  [252]

Finding root
  $ rhg root
  abort: no repository found in '$TESTTMP' (.hg not found)!
  [255]

  $ hg init repository
  $ cd repository
  $ rhg root
  $TESTTMP/repository

Unwritable file descriptor
  $ rhg root > /dev/full
  abort: No space left on device (os error 28)
  [255]

Deleted repository
  $ rm -rf `pwd`
  $ rhg root
  abort: error getting current working directory: $ENOENT$
  [255]

Listing tracked files
  $ cd $TESTTMP
  $ hg init repository
  $ cd repository
  $ for i in 1 2 3; do
  >   echo $i >> file$i
  >   hg add file$i
  > done
  > hg commit -m "commit $i" -q

Listing tracked files from root
  $ rhg files
  file1
  file2
  file3

Listing tracked files from subdirectory
  $ mkdir -p path/to/directory
  $ cd path/to/directory
  $ rhg files
  ../../../file1
  ../../../file2
  ../../../file3

Listing tracked files through broken pipe
  $ rhg files | head -n 1
  ../../../file1

Debuging data in inline index
  $ cd $TESTTMP
  $ rm -rf repository
  $ hg init repository
  $ cd repository
  $ for i in 1 2 3; do
  >   echo $i >> file$i
  >   hg add file$i
  >   hg commit -m "commit $i" -q
  > done
  $ rhg debugdata -c 2
  e36fa63d37a576b27a69057598351db6ee5746bd
  test
  0 0
  file3
  
  commit 3 (no-eol)
  $ rhg debugdata -m 2
  file1\x00b8e02f6433738021a065f94175c7cd23db5f05be (esc)
  file2\x005d9299349fc01ddd25d0070d149b124d8f10411e (esc)
  file3\x002661d26c649684b482d10f91960cc3db683c38b4 (esc)