test: update test-logtoprocess.t to not requires less

The test previously assumed that a working pager was present in the test
environment. Update it to use the fakepager instead.

Differential Revision: https://phab.mercurial-scm.org/D5399

tests/test-logtoprocess.t

@@ -1,118 +1,130 b''
 #require no-windows
 
 ATTENTION: logtoprocess runs commands asynchronously. Be sure to append "| cat"
 to hg commands, to wait for the output, if you want to test its output.
 Otherwise the test will be flaky.
 
 Test if logtoprocess correctly captures command-related log calls.
 
   $ hg init
   $ cat > $TESTTMP/foocommand.py << EOF
   > from __future__ import absolute_import
   > from mercurial import registrar
   > cmdtable = {}
   > command = registrar.command(cmdtable)
   > configtable = {}
   > configitem = registrar.configitem(configtable)
   > configitem(b'logtoprocess', b'foo',
   >     default=None,
   > )
   > @command(b'foobar', [])
   > def foo(ui, repo):
   >     ui.log(b'foo', b'a message: %s\n', b'spam')
   > EOF
   $ cp $HGRCPATH $HGRCPATH.bak
   $ cat >> $HGRCPATH << EOF
   > [extensions]
   > logtoprocess=
   > foocommand=$TESTTMP/foocommand.py
   > [logtoprocess]
   > command=(echo 'logtoprocess command output:';
   >     echo "\$EVENT";
   >     echo "\$MSG1") > $TESTTMP/command.log
   > commandfinish=(echo 'logtoprocess commandfinish output:';
   >     echo "\$EVENT";
   >     echo "\$MSG1";
   >     echo "canonical: \$OPT_CANONICAL_COMMAND") > $TESTTMP/commandfinish.log
   > foo=(echo 'logtoprocess foo output:';
   >     echo "\$EVENT";
   >     echo "\$MSG1") > $TESTTMP/foo.log
   > EOF
 
 Running a command triggers both a ui.log('command') and a
 ui.log('commandfinish') call. The foo command also uses ui.log.
 
 Use sort to avoid ordering issues between the various processes we spawn:
   $ hg fooba
   $ sleep 1
   $ cat $TESTTMP/command.log | sort
   
   command
   fooba
   logtoprocess command output:
 
 #if no-chg
   $ cat $TESTTMP/commandfinish.log | sort
   
   canonical: foobar
   commandfinish
   fooba exited 0 after * seconds (glob)
   logtoprocess commandfinish output:
   $ cat $TESTTMP/foo.log | sort
   
   a message: spam
   foo
   logtoprocess foo output:
 #endif
 
 Confirm that logging blocked time catches stdio properly:
   $ cp $HGRCPATH.bak $HGRCPATH
   $ cat >> $HGRCPATH << EOF
   > [extensions]
   > logtoprocess=
   > pager=
   > [logtoprocess]
   > uiblocked=echo "\$EVENT stdio \$OPT_STDIO_BLOCKED ms command \$OPT_COMMAND_DURATION ms" > $TESTTMP/uiblocked.log
   > [ui]
   > logblockedtimes=True
   > EOF
 
   $ hg log
   $ sleep 1
   $ cat $TESTTMP/uiblocked.log
   uiblocked stdio [0-9]+.[0-9]* ms command [0-9]+.[0-9]* ms (re)
 
 Try to confirm that pager wait on logtoprocess:
 
 Add a script that wait on a file to appears for 5 seconds, if it sees it touch
 another file or die after 5 seconds. If the scripts is awaited by hg, the
 script will die after the timeout before we could touch the file and the
 resulting file will not exists. If not, we will touch the file and see it.
 
+  $ cat >> fakepager.py <<EOF
+  > import sys
+  > printed = False
+  > for line in sys.stdin:
+  >     sys.stdout.write(line)
+  >     printed = True
+  > if not printed:
+  >     sys.stdout.write('paged empty output!\n')
+  > EOF
+
   $ cat > $TESTTMP/wait-output.sh << EOF
   > #!/bin/sh
   > for i in \`$TESTDIR/seq.py 50\`; do
   >   if [ -f "$TESTTMP/wait-for-touched" ];
   >   then
   >     touch "$TESTTMP/touched";
   >     break;
   >   else
   >     sleep 0.1;
   >   fi
   > done
   > EOF
   $ chmod +x $TESTTMP/wait-output.sh
 
   $ cat >> $HGRCPATH << EOF
   > [extensions]
   > logtoprocess=
   > pager=
+  > [pager]
+  > pager = "$PYTHON" $TESTTMP/fakepager.py
   > [logtoprocess]
   > commandfinish=$TESTTMP/wait-output.sh
   > EOF
   $ hg version -q --pager=always
   Mercurial Distributed SCM (version *) (glob)
   $ touch $TESTTMP/wait-for-touched
   $ sleep 0.2
   $ test -f $TESTTMP/touched && echo "SUCCESS Pager is not waiting on ltp" || echo "FAIL Pager is waiting on ltp"
   SUCCESS Pager is not waiting on ltp