Java 类org.springframework.test.context.junit4.rules.SpringMethodRule 实例源码

private static void ensureSpringRulesAreNotPresent(Class<?> testClass) {
    for (Field field : testClass.getFields()) {
        if (SpringClassRule.class.isAssignableFrom(field.getType())) {
            throw new IllegalStateException(String.format("Detected SpringClassRule field in test class [%s], " +
                    "but SpringClassRule cannot be used with the SpringJUnit4ClassRunner.", testClass.getName()));
        }
        if (SpringMethodRule.class.isAssignableFrom(field.getType())) {
            throw new IllegalStateException(String.format("Detected SpringMethodRule field in test class [%s], " +
                    "but SpringMethodRule cannot be used with the SpringJUnit4ClassRunner.", testClass.getName()));
        }
    }
}