tests: Start test to run all tools on all data

In another branch I missed a bug that occurred in one of our test samples.
Avoid this by running all tools over all data

tests/test_on_all.py

@@ -0,0 +1,62 @@
+"""
+Run all tools on all test data to check for regressions.
+"""
+
+import unittest
+
+# Directory with test data, independent of current working directory
+from tests.test_utils import loop_and_extract, call_and_capture, DATA_BASE_DIR
+
+
+class TestOnAll(unittest.TestCase):
+    """Run all tools on all test data."""
+
+    def do_test(self, module, skip_list_arg=None):
+        """Helper for the tests that does the actual work."""
+        if skip_list_arg is None:
+            skip_list = []
+        else:
+            skip_list = skip_list_arg
+
+        for full_path, rel_path in loop_and_extract():
+            if rel_path in skip_list:
+                print('Run {0} on all test data: skip {1}'
+                      .format(module, rel_path))
+                continue
+
+            output, return_code = call_and_capture(module, [full_path,],
+                                                   accept_nonzero_exit=True)
+            if return_code == 0:
+                continue
+
+            error = '{0} returned {1} for sample {2}' \
+                    .format(module, return_code, rel_path)
+            print(error)
+            for line in output.splitlines():
+                print(line.rstrip())
+            self.fail(error)
+
+    def test_olevba(self):
+        """Run olevba on all test data"""
+        skip_list = ('rtfobj/issue_185.rtf.zip',
+                     'rtfobj/issue_251.rtf',
+                     'msodde/RTF-Spec-1.7.rtf',
+                     'basic/encrypted.docx',
+                     'encrypted/encrypted.doc',
+                     'encrypted/encrypted.docm',
+                     'encrypted/encrypted.docx',
+                     'encrypted/encrypted.ppt',
+                     'encrypted/encrypted.pptm',
+                     'encrypted/encrypted.pptx',
+                     'encrypted/encrypted.xls',
+                     'encrypted/encrypted.xlsm',
+                     'encrypted/encrypted.xlsx',
+                     'encrypted/encrypted.xlsb',
+                     )
+        self.do_test('olevba', skip_list)
+
+    # todo: add all the others as well
+
+# just in case somebody calls this file as a script
+if __name__ == '__main__':
+    unittest.main()