diff --git a/tools/versioner/run_tests.py b/tools/versioner/run_tests.py
new file mode 100644
index 0000000..f5a31f2
--- /dev/null
+++ b/tools/versioner/run_tests.py
@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+
+import os
+import subprocess
+import sys
+
+red = '\033[91m'
+green = '\033[92m'
+bold = '\033[1m'
+reset = '\033[0m'
+prefix_pass = bold + "[" + green + "PASS" + reset + bold + "]" + reset
+prefix_fail = bold + "[" + red + "FAIL" + reset + bold + "]" + reset
+
+
+def indent(text, spaces=4):
+    prefix = "    "
+    return "\n".join([prefix + line for line in text.split("\n")])
+
+
+def run_test(test_name, path):
+    os.chdir(path)
+    process = subprocess.Popen(
+        ["/bin/sh", "run.sh"], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    (output, error) = process.communicate()
+
+    if os.path.exists("expected_fail"):
+        with open("expected_fail") as f:
+            expected_output = f.read()
+            if output != expected_output:
+                print("{} {}: expected output mismatch".format(
+                    prefix_fail, test_name))
+                print("")
+                print("  Expected:")
+                print(indent(expected_output))
+                print("  Actual:")
+                print(indent(output))
+                return False
+    elif process.returncode != 0:
+        print("{} {}: unexpected failure:".format(prefix_fail, test_name))
+        print("")
+        print(indent(output))
+        return False
+
+    print("{} {}".format(prefix_pass, test_name))
+    return True
+
+root_dir = os.path.dirname(os.path.realpath(__file__))
+test_dir = os.path.join(root_dir, "tests")
+tests = os.listdir(test_dir)
+
+success = True
+for test in sorted(tests):
+    if not run_test(test, os.path.join(test_dir, test)):
+        success = False
+
+sys.exit(0 if success else 1)