使用assertEquals测试hasEnded时预期true却返回false问题排查

开发者阿泽

2026-8-13

问题排查：assertEquals断言hasEnded为true但实际返回false

问题场景

使用assertEquals断言游戏类的hasEnded属性应为true，但测试结果返回false，报错信息：

AssertionFailedError: expected: "true" but was: "false"

游戏类定义

class Schwimmen(
    var hasEnded: Boolean = false
)

回合推进方法

fun nextTurn() {
    val game = rootService.currentGame
    game.hasEnded= checkForEnd()
}

结束条件判断方法

private fun checkForEnd(): Boolean {
    val game = rootService.currentGame
    return (game.cards.size < 3 && game.playerPassCounter >= game.players.size) ||
            (game.activePlayer == game.endGamePlayer)
}

测试方法

fun testNextTurn(){
    testRootService.schwimmenService.startSchwimmen(players)
    testRootService.currentGame?.cards?.clear()
    testRootService.currentGame?.playerPassCounter = 5

    assertEquals(true, testRootService.currentGame?.hasEnded)
}

核心原因排查

未触发状态更新逻辑
hasEnded属性的赋值仅在nextTurn()方法中执行，测试代码只修改了cards和playerPassCounter，但没有调用nextTurn()，导致hasEnded始终保持初始默认值false。
结束条件可能未满足
即使调用nextTurn()，需确认：
- game.players.size是否小于等于5：如果玩家数量大于5，playerPassCounter >= game.players.size条件不成立
- activePlayer == endGamePlayer是否为true：该分支也可能未触发，导致整个判断表达式返回false

修复建议

在测试中添加nextTurn()调用，触发hasEnded状态更新：

fun testNextTurn(){
    testRootService.schwimmenService.startSchwimmen(players)
    testRootService.currentGame?.cards?.clear()
    testRootService.currentGame?.playerPassCounter = 5
    // 调用方法更新hasEnded状态
    testRootService.schwimmenService.nextTurn()

    assertEquals(true, testRootService.currentGame?.hasEnded)
}