测试可能会抛出IllegalArgumentException异常的方法，使用哪种断言方法比较好

Question

测试可能会抛出IllegalArgumentException异常的方法，使用哪种断言方法比较好

Answer 1

用异常状态断言
llegalState

    /**
     * Assert a boolean expression, throwing <code>IllegalStateException</code>
     * if the test result is <code>false</code>. Call isTrue if you wish to
     * throw IllegalArgumentException on an assertion failure.
     * <pre class="code">Assert.state(id == null, "The id property must not already be initialized");</pre>
     * @param expression a boolean expression
     * @param message the exception message to use if the assertion fails
     * @throws IllegalStateException if expression is <code>false</code>
     */
    public static void state(boolean expression, String message) {
        if (!expression) {
            throw new IllegalStateException(message);
        }
    }