Add test for progress extension stable

Add test for progress extension

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-progress	Sun Feb 14 15:45:12 2010 +0100
@@ -0,0 +1,60 @@
+#!/bin/sh
+
+cat > loop.py <<EOF
+from mercurial import commands
+
+def loop(ui, loops, **opts):
+    loops = int(loops)
+    total = None
+    if loops >= 0:
+        total = loops
+    loops = abs(loops)
+
+    for i in range(loops):
+        ui.progress('loop', i, 'loop.%d' % i, 'loopnum', total)
+    ui.progress('loop', None, 'loop.done', 'loopnum', total)
+
+commands.norepo += " loop"
+
+cmdtable = {
+    "loop": (loop, [], 'hg loop LOOPS'),
+}
+EOF
+
+cat > filtercr.py <<EOF
+import sys, re
+for line in sys.stdin:
+    line = re.sub(r'\r+[^\n]', lambda m: '\n' + m.group()[-1:], line)
+    sys.stdout.write(line)
+EOF
+
+echo "[extensions]" >> $HGRCPATH
+echo "progress=" >> $HGRCPATH
+echo "loop=" `pwd`/loop.py >> $HGRCPATH
+echo "[ui]" >> $HGRCPATH
+echo "interactive=1" >> $HGRCPATH
+
+echo '% test default params, display nothing because of delay'
+hg -y loop 3 | python filtercr.py
+
+echo "[progress]" >> $HGRCPATH
+echo "delay=0" >> $HGRCPATH
+echo "refresh=0" >> $HGRCPATH
+
+echo '% test with delay=0, refresh=0'
+hg -y loop 3 | python filtercr.py
+
+echo '% test refresh is taken in account'
+hg -y --config progress.refresh=100 loop 3 | python filtercr.py
+
+echo '% test format options 1'
+hg -y --config 'progress.format=number topic item+2' loop 2 | python filtercr.py
+
+echo '% test format options 2'
+hg -y --config 'progress.format=number item-3 bar' loop 2 | python filtercr.py
+
+echo '% test format options and indeterminate progress'
+hg -y --config 'progress.format=number item bar' loop -- -2 | python filtercr.py
+
+echo '% test immediate progress completion'
+hg -y loop 0 | python filtercr.py

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-progress.out	Sun Feb 14 15:45:12 2010 +0100
@@ -0,0 +1,20 @@
+% test default params, display nothing because of delay
+% test with delay=0, refresh=0
+
+loop [                                                                    ] 0/3
+loop [=====================>                                              ] 1/3
+loop [============================================>                       ] 2/3
+                                                                                
% test refresh is taken in account
+% test format options 1
+
+0/2 loop lo
+1/2 loop lo
+                                                                                
% test format options 2
+
+0/2 p.0 [                                                                     ]
+1/2 p.1 [=================================>                                   ]
+                                                                                
% test format options and indeterminate progress
+
+0 loop.0               [ <=>                                                  ]
+1 loop.1               [  <=>                                                 ]
+                                                                                
% test immediate progress completion