java assertion_error ai_generated true

java.lang.AssertionError: 期望值:<X> 但实际值:<Y>

java.lang.AssertionError: expected:<X> but was:<Y>

ID: java/assertion-error

其他格式: JSON · Markdown 中文 · English
90%修复率
85%置信度
1证据数
2023-04-05首次发现

版本兼容性

版本状态引入弃用备注
Java 8 active — — —
Java 11 active — — —
Java 17 active — — —
JUnit 4.13 active — — —
JUnit 5.9 active — — —

根因分析

AssertionError 在 Java 断言（assert 语句）失败时抛出，通常用于调试或测试以验证不变量，或当测试框架（如 JUnit）检测到断言失败时。

English

AssertionError is thrown when a Java assertion (assert statement) fails, typically used for debugging or testing to verify invariants, or when a test framework like JUnit detects a failed assertion.

generic

官方文档

https://docs.oracle.com/javase/8/docs/api/java/lang/AssertionError.html

解决方案

  1. Fix the code logic to ensure the assertion condition is true. For example, if the assertion is 'assert x == 10', correct the variable x to equal 10 before the assertion.
  2. Use a proper testing framework like JUnit with assertEquals(expected, actual) instead of assert statements, which provides better error messages and is always enabled.

无效尝试

常见但无效的做法:

  1. 80% 失败

    AssertionError indicates a programming error; ignoring it allows the bug to persist and may cause unpredictable behavior later.

  2. 90% 失败

    Assertions are a development-time tool; disabling them does not fix the underlying issue and can lead to silent failures.