run-spec will now set wd to spec dir

This removes sourcing complications

src/run-spec

@@ -24,6 +24,8 @@ source spec
 declare -r tcase="${1?Missing test case path}"
 
 _begin-spec
-  source "$tcase" || exit $?
+  cd "$( dirname "$tcase" )" \
+    && source "$tcase" \
+    || exit $?
 _end-spec
 

test/test-spec

@@ -34,7 +34,7 @@
 # This will take an arbitrary script from stdin and execute it
 test-run()
 {
-  ../src/run-spec <( cat )
+  ( cd ../src && ./run-spec <( cat ) )
 }