Add a simple automated test runner for all the .wasm files in the test directory

ml-proto/runtests.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python
+
+import os.path
+import unittest
+import subprocess
+import glob
+
+class RunTests(unittest.TestCase):
+  def _runTestFile(self, shortName, fileName, interpreterPath):
+    print("\n// %s" % shortName)
+    exitCode = subprocess.call([interpreterPath, fileName])
+    self.assertEqual(0, exitCode, "test runner failed with exit code %i" % exitCode)
+
+def generate_test_cases(cls, interpreterPath, files):
+  for fileName in files:
+    absFileName = os.path.abspath(fileName)
+    attrName = fileName
+    testCase = lambda self : self._runTestFile(attrName, absFileName, interpreterPath)
+    setattr(cls, attrName, testCase)
+
+def rebuild_interpreter():
+  interpreterPath = os.path.abspath("src/main.native")
+
+  print("// building main.native")
+  exitCode = subprocess.call(["ocamlbuild", "-libs", "bigarray", "main.native"], cwd=os.path.abspath("src"))
+  if (exitCode != 0):
+    raise Exception("ocamlbuild failed with exit code %i" % exitCode)
+
+  return interpreterPath
+
+if __name__ == "__main__":  
+  interpreterPath = rebuild_interpreter()
+  generate_test_cases(RunTests, interpreterPath, glob.glob("test/*.wasm"))
+  unittest.main()