java - 在 JUnit 中测试 CharSequences 是否相等

Question

以下测试运行成功:

assertEquals(a.toString(), b.toString());

以下不是:

assertEquals(a, b);

a 是一个 StringBuilder，而 b 是一个不同类型的 CharSequence。

有没有什么方法可以测试 CharSequence 是否相等，而无需先将它们转换为 String？

Answer 1

您可以通过使用 CharBuffers:

assertEquals(CharBuffer.wrap(a), CharBuffer.wrap(b));

CharBuffer 的 .equals 的 javadoc 保证了这一点:

Tells whether or not this buffer is equal to another object.

Two char buffers are equal if, and only if,

    They have the same element type,

    They have the same number of remaining elements, and

    The two sequences of remaining elements, considered independently of their starting positions, are pointwise equal.