tests: easier error diagnostics for test-serve

tests/test-serve

@@ -2,9 +2,11 b''
 
 hgserve()
 {
-    hg serve -a localhost -p $HGPORT1 -d --pid-file=hg.pid -v $@ \
+    hg serve -a localhost -p $HGPORT1 -d --pid-file=hg.pid -E errors.log -v $@ \
         | sed -e 's/:[0-9][0-9]*//g' -e 's/http:\/\/[^/]*\//http:\/\/localhost\//'
     cat hg.pid >> "$DAEMON_PIDS"
+    echo % errors
+    cat errors.log
     sleep 1
     kill `cat hg.pid`
     sleep 1
@@ -17,11 +19,13 b" echo '[web]' > .hg/hgrc"
 echo 'accesslog = access.log' >> .hg/hgrc
 
 echo % Without -v
-hg serve -a localhost -p $HGPORT -d --pid-file=hg.pid
+hg serve -a localhost -p $HGPORT -d --pid-file=hg.pid -E errors.log
 cat hg.pid >> "$DAEMON_PIDS"
 if [ -f access.log ]; then
     echo 'access log created - .hg/hgrc respected'
 fi
+echo % errors
+cat errors.log
 
 echo % With -v
 hgserve

tests/test-serve.out

@@ -1,12 +1,18 b''
 % Without -v
 access log created - .hg/hgrc respected
+% errors
 % With -v
 listening at http://localhost/ (bound to 127.0.0.1)
+% errors
 % With --prefix foo
 listening at http://localhost/foo/ (bound to 127.0.0.1)
+% errors
 % With --prefix /foo
 listening at http://localhost/foo/ (bound to 127.0.0.1)
+% errors
 % With --prefix foo/
 listening at http://localhost/foo/ (bound to 127.0.0.1)
+% errors
 % With --prefix /foo/
 listening at http://localhost/foo/ (bound to 127.0.0.1)
+% errors