protected void validateFields()

in src/main/java/org/junit/runners/parameterized/BlockJUnit4ClassRunnerWithParameters.java [115:144]

• 30 lines of code
• 7 McCabe index (conditional complexity)

    protected void validateFields(List<Throwable> errors) {
        super.validateFields(errors);
        if (getInjectionType() == InjectionType.FIELD) {
            List<FrameworkField> annotatedFieldsByParameter = getAnnotatedFieldsByParameter();
            int[] usedIndices = new int[annotatedFieldsByParameter.size()];
            for (FrameworkField each : annotatedFieldsByParameter) {
                int index = each.getField().getAnnotation(Parameter.class)
                        .value();
                if (index < 0 || index > annotatedFieldsByParameter.size() - 1) {
                    errors.add(new Exception("Invalid @Parameter value: "
                            + index + ". @Parameter fields counted: "
                            + annotatedFieldsByParameter.size()
                            + ". Please use an index between 0 and "
                            + (annotatedFieldsByParameter.size() - 1) + "."));
                } else {
                    usedIndices[index]++;
                }
            }
            for (int index = 0; index < usedIndices.length; index++) {
                int numberOfUse = usedIndices[index];
                if (numberOfUse == 0) {
                    errors.add(new Exception("@Parameter(" + index
                            + ") is never used."));
                } else if (numberOfUse > 1) {
                    errors.add(new Exception("@Parameter(" + index
                            + ") is used more than once (" + numberOfUse + ")."));
                }
            }
        }
    }