Add timeout for PyLint and PyUnit Adapter

lib/py_unit_adapter.rb

@@ -14,16 +14,22 @@ class PyUnitAdapter < TestingFrameworkAdapter
     failed = failures_matches ? failures_matches.captures.try(:first).to_i : 0
     error_matches = ERRORS_REGEXP.match(output[:stderr])
     errors = error_matches ? error_matches.captures.try(:first).to_i : 0
-    assertion_error_matches = output[:stderr].scan(ASSERTION_ERROR_REGEXP).map { |match|
-      testname = match[1]
-      error = match[3].strip
+    begin
+      Timeout.timeout(2.seconds) do
+        assertion_error_matches = output[:stderr].scan(ASSERTION_ERROR_REGEXP).map { |match|
+          testname = match[1]
+          error = match[3].strip
 
-      if testname == 'test_assess'
-        error
-      else
-        "#{testname}: #{error}"
+          if testname == 'test_assess'
+            error
+          else
+            "#{testname}: #{error}"
+          end
+        }.flatten || []
       end
-    }.flatten || []
+    rescue Timeout::Error
+      assertion_error_matches = []
+    end
     {count: count, failed: failed + errors, error_messages: assertion_error_matches}
   end
 end