half-way implementation of error on no found tests

tests/Errors/1 when no tests are found/exit code

@@ -0,0 +1,3 @@
+#!/bin/sh
+../../../urchin $testdir
+test 1 -eq $?

tests/Errors/1 when no tests are found/setup

@@ -0,0 +1,4 @@
+tmp=$(mktemp -d)
+export testdir=$tmp/tests
+mkdir -p $testdir
+touch $testdir/.urchin

tests/Errors/1 when no tests are found/stderr

@@ -0,0 +1,2 @@
+#!/bin/sh
+../../../urchin $testdir 2>&1 | grep -i 'no.*found'

tests/Errors/1 when no tests are found/teardown

@@ -0,0 +1 @@
+rm -R $tmp

tests/Single-file test suites/empty testsuite

@@ -1,14 +0,0 @@
-#!/bin/sh
-set -e
-
-tmp=$(mktemp -d)
-testdir=$tmp/tests
-mkdir -p $testdir
-
-set +e
-../../urchin -n -t $testdir
-e=$?
-set -e
-
-rm -R $tmp
-exit $e

urchin

@@ -56,10 +56,6 @@ if [ -n "${ZSH_VERSION}" ]; then
 fi
 
 
-# Make sure that CDPATH isn't set, as it causes `cd` to behave unpredictably -
-# notably, it can produce output.
-unset CDPATH
-
 # All temporary files go here
 urchin_tmp=$(mktemp -d)
 > "${urchin_tmp}/log"
@@ -146,7 +142,7 @@ recurse() {
 
   if [ -d "${potential_test}" ]; then
     (
-      cd -- "${potential_test}" > /dev/null
+      cd -- "${potential_test}"
       if test -f setup_dir; then . ./setup_dir; fi
 
       for test in *; do
@@ -568,6 +564,11 @@ main() {
   recurse "$(fullpath "${1}")" "${root}" "${cycle_shell}" "${TEST_SHELL}" || :
   finish=$(date +%s)
 
+  test $(cat "${urchin_tmp}"/log | wc -l) -gt 0 || {
+    echo 'No tests found' > /dev/stderr
+    urchin_exit 1
+  }
+    
   report_outcome "${root}" "${tap_format}" "${urchin_tmp}"/log "${start}" \
     "${finish}"
   urchin_exit "${?}"