如何在 Kotlin 中实现 Android 中领域数据库的简单测试?
我尝试改编来自java领域的片段在github上测试 https://github.com/realm/realm-java/blob/master/examples/unitTestExample/src/test/java/io/realm/examples/unittesting/ExampleRealmTest.java到 kotlin 并得到下一个代码:
import io.realm.Realm
import io.realm.log.RealmLog
import org.hamcrest.CoreMatchers
import org.junit.Assert
import org.junit.Test import org.junit.Before import org.junit.Rule
import org.mockito.Mockito.`when`
import org.powermock.api.mockito.PowerMockito
import org.powermock.modules.junit4.rule.PowerMockRule
class DBTest {
@Rule
var rule = PowerMockRule()
lateinit internal var mockRealm: Realm
@Before
fun setup() {
PowerMockito.mockStatic(RealmLog::class.java)
PowerMockito.mockStatic(Realm::class.java)
val mockRealm = PowerMockito.mock(Realm::class.java)
`when`(Realm.getDefaultInstance()).thenReturn(mockRealm)
this.mockRealm = mockRealm
}
@Test
fun shouldBeAbleToGetDefaultInstance() {
Assert.assertThat(Realm.getDefaultInstance(), CoreMatchers.`is`(mockRealm))
}
}
但是当我执行测试时我得到:
org.junit.internal.runners.rules.ValidationError: The @Rule 'rule' must be public.
您可以像这样公开规则的 getter:
@get: Rule
var rule = PowerMockRule()
或者您可以使用以下命令将其标记为 Java 样式字段@JvmField
注解:
@JvmField @Rule
var rule = PowerMockRule()
您可以在此答案中找到更多详细信息:https://stackoverflow.com/a/32827600/4465208 https://stackoverflow.com/a/32827600/4465208
诗。您还应该考虑将其设为val
如果您不打算在任何地方改变它的值。
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