--- a/tests/test-run-tests.t Mon Jul 06 23:23:22 2015 -0400
+++ b/tests/test-run-tests.t Fri Jul 03 06:56:03 2015 +0900
@@ -566,3 +566,20 @@
$ rm -f test-glob-backslash.t
+Test reusability for third party tools
+======================================
+
+ $ mkdir "$TESTTMP"/anothertests
+ $ cd "$TESTTMP"/anothertests
+
+test that `run-tests.py` can execute hghave, even if it runs not in
+Mercurial source tree.
+
+ $ cat > test-hghave.t <<EOF
+ > #require true
+ > $ echo foo
+ > foo
+ > EOF
+ $ run-tests.py test-hghave.t
+ .
+ # Ran 1 tests, 0 skipped, 0 warned, 0 failed.