nicer overriding of various executables w/ testing

* run-tests.py now takes a `--d8-executable` flag
* Added a `TOOL` directive to tests to reduce boilerplate
* Change all tests to use the new `TOOL` directive
* Factor out executable searching with fallback to find_exe.py

This fixes issue #43.

1 files changed, 19 insertions, 0 deletions

diff --git a/test/utils.py b/test/utils.py
new file mode 100644
index 00000000..47aa30ba
--- /dev/null
+++ b/test/utils.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+#
+# Copyright 2016 WebAssembly Community Group participants
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+class Error(Exception):
+  pass