Kotlin类实例assertEqual

我是新来的java / kotlin。 我想在下面的课堂上坚持平等：

class PlaceCommand(vararg args: String) : ICommand { var direction: Direction = Direction.valueOf(args[1].toUpperCase()) var x: Int = args[2].toInt() var y: Int = args[3].toInt() // ... } 

需要改变什么：

 class FactoryTest { @Test fun testFactorySuccess() { val args = arrayOf("place", "WEST", "1", "1") val a = PlaceCommand(*args) val b = Factory(args) as PlaceCommand Assert.assertTrue(axequals(bx)) Assert.assertTrue(ayequals(by)) Assert.assertTrue(a.direction.equals(b.direction)) } // ... } 

像这样的东西：

 class FactoryTest { @Test fun testFactorySuccess() { val args = arrayOf("place", "WEST", "1", "1") Assert.assertEqual(PlaceCommand(*args), Factory(args) as PlaceCommand) # or Assert.assertTrue(PlaceCommand(*args).equal(Factory(args) as PlaceCommand)) } // ... } 

谢谢。

Answer 1

您可以在PlaceCommand上覆盖equals方法

 override fun equals(other: Any?): Boolean{ if (this === other) return true if (other?.javaClass != javaClass) return false other as PlaceCommand if (x != other.x) return false if (y != other.y) return false return true } 

如果您使用Intellij Idea，则可以按Alt+Insert来生成它。

然后使用==运算符来测试是否相等

Assert.assertTrue(PlaceCommand(*args) == (Factory(args) as PlaceCommand))

在kotlin ==相当于a?.equals(b) ?: b === null 。 ===是参考平等