Question

我有一个测试，我想测试一个特定的结果是一种类。使用 instanceof 关键字断言。遗憾的是，我没有想出如何在数据表中实际提供数据值 expectedClass ，而没有使用 instanceof 实际调用它的问题。我认为关键字 instanceof 是这里的问题，因为它只接受类/接口名称。知道如何以其他方式测试我想测试的内容吗？

class BattleResolverFactoryTest extends Specification {

    def uut = new BattleResolverFactory()

    @Unroll
    def "should return proper BattleResolver for given ConflictType"(Conflict.ConflictType conflictType, Class<? extends BattleResolver> expectedInstance) {
        when:
        def battleResolver = BattleResolverFactory.getResolver(conflictType)
        then:
        battleResolver instanceof expectedClass
        where:
        conflictType                            | expectedClass
        Conflict.ConflictType.INFANTRY_CONFLICT | TestInfantryResolver
        Conflict.ConflictType.ARMOR_CONFLICT    | TestArmorResolver

    }
}

Answer 1

你可以这样使用isCase：

class BattleResolverFactoryTest extends Specification {

    def uut = new BattleResolverFactory()

    @Unroll
    def "should return proper BattleResolver for given ConflictType"(Conflict.ConflictType conflictType, Class<? extends BattleResolver> expectedInstance) {
        when:
        def battleResolver = BattleResolverFactory.getResolver(conflictType)

        then:
        expectedClass.isCase(battleResolver)

        where:
        conflictType                            | expectedClass
        Conflict.ConflictType.INFANTRY_CONFLICT | TestInfantryResolver
        Conflict.ConflictType.ARMOR_CONFLICT    | TestArmorResolver

    }
}

Answer 2

正如tim_yates所说，你可以使用groovy函数isCase或java函数isAssignableFrom，或者你可以使用groovy in关键字（委托给isCase）。

expectedClass.isCase(battleResolver)
expectedClass.isAssignableFrom(battleResolver)
expectedClass in battleResolver

Spock数据驱动测试用类来测试“instanceof”断言

2 个答案: