view tests/test-eol-patch.t @ 27917:97e0dc6d248c stable

repoview: fix corrupted hiddencache crash Mercurial (issue5042)

Before this patch if the hiddencache existed but was empty, it would crash
mercurial. This patch adds exception handling when reading the hiddencache to
avoid the issue.
When encountering a corrupted cache file we print a devel warning. There would
be no point in issuing a normal warning as the user wouldn't be able to do
anything about the situation.

The warning looks like:

devel-warn: corrupted hidden cache, removing it at: /path/to/repoview.py

Test EOL patching

  $ cat >> $HGRCPATH <<EOF
  > [diff]
  > git = 1
  > EOF

Set up helpers

  $ seteol () {
  >     if [ $1 = "LF" ]; then
  >         EOL='\n'
  >     else
  >         EOL='\r\n'
  >     fi
  > }

  $ makerepo () {
  >     seteol $1
  >     echo
  >     echo "# ==== setup $1 repository ===="
  >     echo '% hg init'
  >     hg init repo
  >     cd repo
  >     cat > .hgeol <<EOF
  > [repository]
  > native = $1
  > [patterns]
  > unix.txt = LF
  > win.txt = CRLF
  > **.txt = native
  > EOF
  >     printf "first\r\nsecond\r\nthird\r\n" > win.txt
  >     printf "first\nsecond\nthird\n" > unix.txt
  >     printf "first${EOL}second${EOL}third${EOL}" > native.txt
  >     hg commit --addremove -m 'checkin'
  >     cd ..
  > }

  $ dotest () {
  >     seteol $1
  >     echo
  >     echo "% hg clone repo repo-$1"
  >     hg clone --noupdate repo repo-$1
  >     cd repo-$1
  >     cat > .hg/hgrc <<EOF
  > [extensions]
  > eol =
  > [eol]
  > native = $1
  > EOF
  >     hg update
  >     echo '% native.txt'
  >     cat native.txt
  >     echo '% unix.txt'
  >     cat unix.txt
  >     echo '% win.txt'
  >     cat win.txt
  >     printf "first${EOL}third${EOL}" > native.txt
  >     printf "first\r\nthird\r\n" > win.txt
  >     printf "first\nthird\n" > unix.txt
  >     echo '% hg diff'
  >     hg diff > p
  >     cat p
  >     echo '% hg revert'
  >     hg revert --all
  >     echo '% hg import'
  >     hg import -m 'patch' p
  >     echo '% native.txt'
  >     cat native.txt
  >     echo '% unix.txt'
  >     cat unix.txt
  >     echo '% win.txt'
  >     cat win.txt
  >     echo '% hg diff -c tip'
  >     hg diff -c tip
  >     cd ..
  >     rm -r repo-$1
  > }

Run tests

  $ makerepo LF
  
  # ==== setup LF repository ====
  % hg init
  adding .hgeol
  adding native.txt
  adding unix.txt
  adding win.txt
  $ dotest LF
  
  % hg clone repo repo-LF
  4 files updated, 0 files merged, 0 files removed, 0 files unresolved
  % native.txt
  first
  second
  third
  % unix.txt
  first
  second
  third
  % win.txt
  first\r (esc)
  second\r (esc)
  third\r (esc)
  % hg diff
  diff --git a/native.txt b/native.txt
  --- a/native.txt
  +++ b/native.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/unix.txt b/unix.txt
  --- a/unix.txt
  +++ b/unix.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/win.txt b/win.txt
  --- a/win.txt
  +++ b/win.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  % hg revert
  reverting native.txt
  reverting unix.txt
  reverting win.txt
  % hg import
  applying p
  % native.txt
  first
  third
  % unix.txt
  first
  third
  % win.txt
  first\r (esc)
  third\r (esc)
  % hg diff -c tip
  diff --git a/native.txt b/native.txt
  --- a/native.txt
  +++ b/native.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/unix.txt b/unix.txt
  --- a/unix.txt
  +++ b/unix.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/win.txt b/win.txt
  --- a/win.txt
  +++ b/win.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  $ dotest CRLF
  
  % hg clone repo repo-CRLF
  4 files updated, 0 files merged, 0 files removed, 0 files unresolved
  % native.txt
  first\r (esc)
  second\r (esc)
  third\r (esc)
  % unix.txt
  first
  second
  third
  % win.txt
  first\r (esc)
  second\r (esc)
  third\r (esc)
  % hg diff
  diff --git a/native.txt b/native.txt
  --- a/native.txt
  +++ b/native.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/unix.txt b/unix.txt
  --- a/unix.txt
  +++ b/unix.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/win.txt b/win.txt
  --- a/win.txt
  +++ b/win.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  % hg revert
  reverting native.txt
  reverting unix.txt
  reverting win.txt
  % hg import
  applying p
  % native.txt
  first\r (esc)
  third\r (esc)
  % unix.txt
  first
  third
  % win.txt
  first\r (esc)
  third\r (esc)
  % hg diff -c tip
  diff --git a/native.txt b/native.txt
  --- a/native.txt
  +++ b/native.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/unix.txt b/unix.txt
  --- a/unix.txt
  +++ b/unix.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/win.txt b/win.txt
  --- a/win.txt
  +++ b/win.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  $ rm -r repo
  $ makerepo CRLF
  
  # ==== setup CRLF repository ====
  % hg init
  adding .hgeol
  adding native.txt
  adding unix.txt
  adding win.txt
  $ dotest LF
  
  % hg clone repo repo-LF
  4 files updated, 0 files merged, 0 files removed, 0 files unresolved
  % native.txt
  first
  second
  third
  % unix.txt
  first
  second
  third
  % win.txt
  first\r (esc)
  second\r (esc)
  third\r (esc)
  % hg diff
  diff --git a/native.txt b/native.txt
  --- a/native.txt
  +++ b/native.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  diff --git a/unix.txt b/unix.txt
  --- a/unix.txt
  +++ b/unix.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/win.txt b/win.txt
  --- a/win.txt
  +++ b/win.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  % hg revert
  reverting native.txt
  reverting unix.txt
  reverting win.txt
  % hg import
  applying p
  % native.txt
  first
  third
  % unix.txt
  first
  third
  % win.txt
  first\r (esc)
  third\r (esc)
  % hg diff -c tip
  diff --git a/native.txt b/native.txt
  --- a/native.txt
  +++ b/native.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  diff --git a/unix.txt b/unix.txt
  --- a/unix.txt
  +++ b/unix.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/win.txt b/win.txt
  --- a/win.txt
  +++ b/win.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  $ dotest CRLF
  
  % hg clone repo repo-CRLF
  4 files updated, 0 files merged, 0 files removed, 0 files unresolved
  % native.txt
  first\r (esc)
  second\r (esc)
  third\r (esc)
  % unix.txt
  first
  second
  third
  % win.txt
  first\r (esc)
  second\r (esc)
  third\r (esc)
  % hg diff
  diff --git a/native.txt b/native.txt
  --- a/native.txt
  +++ b/native.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  diff --git a/unix.txt b/unix.txt
  --- a/unix.txt
  +++ b/unix.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/win.txt b/win.txt
  --- a/win.txt
  +++ b/win.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  % hg revert
  reverting native.txt
  reverting unix.txt
  reverting win.txt
  % hg import
  applying p
  % native.txt
  first\r (esc)
  third\r (esc)
  % unix.txt
  first
  third
  % win.txt
  first\r (esc)
  third\r (esc)
  % hg diff -c tip
  diff --git a/native.txt b/native.txt
  --- a/native.txt
  +++ b/native.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  diff --git a/unix.txt b/unix.txt
  --- a/unix.txt
  +++ b/unix.txt
  @@ -1,3 +1,2 @@
   first
  -second
   third
  diff --git a/win.txt b/win.txt
  --- a/win.txt
  +++ b/win.txt
  @@ -1,3 +1,2 @@
   first\r (esc)
  -second\r (esc)
   third\r (esc)
  $ rm -r repo