change tests that need series flag to be series

tests/Exit on fail if -e is passed.

@@ -1,5 +1,5 @@
 tmp=$(mktemp)
-../urchin -e -f ./.die-on-fail > $tmp
+../urchin -e -b -f ./.die-on-fail > $tmp
 result=$?
 
 grep '1 should run.' $tmp

tests/TAP/Running with -t should produce TAP output.

@@ -1,4 +1,4 @@
 tmp=$(mktemp)
 
-../../urchin -t .testsuite/ | sed 1d > $tmp
+../../urchin -b -t .testsuite/ | sed 1d > $tmp
 diff $tmp .expected-output

urchin

@@ -67,17 +67,23 @@ recurse() {
         [ -f setup ] && [ -x setup ] && ./setup >> "$stdout_file"
 
         # $2 instead of $indent_level so it doesn't clash
-        recurse "${test}" $(( $2 + 1 )) "$shell_for_sh_tests"
-        exit_code=$?
-
-        if $exit_on_fail && test $exit_code -ne 0; then
+        (
+          recurse "${test}" $(( $2 + 1 )) "$shell_for_sh_tests"
+          exit_code=$?
           [ -f teardown ] && [ -x teardown ] && ./teardown >> "$stdout_file"
-          [ -f teardown_dir ] && [ -x teardown_dir ] && ./teardown_dir >> "$stdout_file"
-          return 1
-        fi
+          exit $exit_code
+        ) &
 
-        [ -f teardown ] && [ -x teardown ] && ./teardown >> "$stdout_file"
+        if $single_process; then
+          wait $!
+          exit_code=$?
+          if $exit_on_fail && test $exit_code -ne 0; then
+            [ -f teardown_dir ] && [ -x teardown_dir ] && ./teardown_dir >> "$stdout_file"
+            return 1
+          fi
+        fi
       done
+      wait
       [ -f teardown_dir ] && [ -x teardown_dir ] && ./teardown_dir >> "$stdout_file"
     )
     if $tap_format; then
@@ -98,6 +104,7 @@ recurse() {
       else
         TEST_SHELL="$TEST_SHELL" ./"$potential_test" > "$stdout_file" 2>&1
       fi
+
       exit_code="$?"
 
       [ -f teardown ] && [ -x teardown ] && ./teardown >> "$stdout_file"
@@ -182,6 +189,8 @@ $USAGE
 
 -s <shell>  Invoke test scripts that either have no shebang line at all or
             have shebang line "#!/bin/sh" with the specified shell.
+-b, --series   Run all tests in series in a single process. The default
+               is to run tests from the same directory in parallel.
 -e          Stop running if any single test fails. This is helpful if you want
             to use Urchin to run things other than tests, such as a set of
             configuration scripts.
@@ -267,6 +276,7 @@ urchin_molly_guard() {
   exit 1
 }
 
+single_process=false
 shell_for_sh_tests=
 force=false
 exit_on_fail=false
@@ -274,6 +284,7 @@ tap_format=false
 while [ $# -gt 0 ]
 do
     case "$1" in
+        -b|--series) single_process=true;;
         -e) exit_on_fail=true;;
         -f) force=true;;
         -s)
@@ -282,7 +293,7 @@ do
           which "$shell_for_sh_tests" > /dev/null || {
             echo "Cannot find specified shell: '$shell_for_sh_tests'" >&2
             urchin_help >&2
-            exit 2
+            exit 3
           } ;;
         -t) tap_format=true;;
         -h|--help) urchin_help
@@ -301,7 +312,12 @@ if [ "$#" != '1' ] || [ ! -d "$1" ]
   then
   [ -n "$1" ] && [ ! -d "$1" ] && echo "Not a directory: '$1'" >&2
   echo "$USAGE" >&2
-  exit 2
+  exit 3
+fi
+
+if $exit_on_fail && ! $single_process; then
+  echo 'You must specify -b/--series in order to use -e.' >&2
+  exit 3
 fi
 
 # Constants