private static String getTestFilterForNamedParameters()

in python/src/com/google/idea/blaze/python/run/producers/PyTestContextProvider.java [125:171]
44 lines of code
17 McCabe index (conditional complexity)

    private static String getTestFilterForNamedParameters(
        String testBase, PyDecorator decorator, boolean useUnderscores) {
      PyExpression[] arguments = getParameterizedDecoratorArgumentList(decorator);
      if (arguments == null) {
        return null;
      }

      ArrayList<String> parameterizedFilters = new ArrayList<>();
      for (PyExpression argument : arguments) {
        if (argument instanceof PyDictLiteralExpression) {
          // can be defined as a dict, use the name from element 'testcase_name'
          PyDictLiteralExpression dictArgument = (PyDictLiteralExpression) argument;
          for (PyKeyValueExpression keyValueExpression : dictArgument.getElements()) {
            PyExpression key = keyValueExpression.getKey();
            PyExpression value = keyValueExpression.getValue();
            if (key instanceof PyStringLiteralExpression
                && value instanceof PyStringLiteralExpression) {
              PyStringLiteralExpression keyString = (PyStringLiteralExpression) key;
              PyStringLiteralExpression valueString = (PyStringLiteralExpression) value;
              if (keyString.getStringValue().equals("testcase_name")) {
                String testCaseName = valueString.getStringValue();
                String separator = useUnderscores && !testCaseName.startsWith("_") ? "_" : "";
                parameterizedFilters.add(testBase + separator + testCaseName);
              }
            }
          }
        } else if (argument instanceof PyParenthesizedExpression) {
          // can be defined as a tuple, use the name from the 0th element
          PyExpression contained = ((PyParenthesizedExpression) argument).getContainedExpression();
          if (contained instanceof PyTupleExpression) {
            PyTupleExpression tupleArgument = (PyTupleExpression) contained;
            PyExpression[] tupleElements = tupleArgument.getElements();
            if (tupleElements.length > 0 && tupleElements[0] instanceof PyStringLiteralExpression) {
              PyStringLiteralExpression testCaseLiteral =
                  (PyStringLiteralExpression) tupleElements[0];
              String testCaseName = testCaseLiteral.getStringValue();
              String separator = useUnderscores && !testCaseName.startsWith("_") ? "_" : "";
              parameterizedFilters.add(testBase + separator + testCaseName);
            }
          }
        }
      }
      if (parameterizedFilters.isEmpty()) {
        return testBase;
      }
      return Joiner.on(" ").join(parameterizedFilters);
    }