在领域的Kotlin中进行Android测试 [英] Android test in kotlin of realm

问题描述

如何通过在Kotlin中实施测试来对Android中的领域数据库进行简单测试?

How can be done a simple test of a realm database in Android implementing the test in Kotlin?

我试图改写Java领域的片段

I attempted to adapt a fragment from java realm test on github to kotlin and got the next code:

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，我得到了:

But when I execute the test I get:

org.junit.internal.runners.rules.ValidationError: The @Rule 'rule' must be public.

推荐答案

您可以像这样将规则的获取者公开:

You can make the getter of the rule public like so:

@get: Rule
var rule = PowerMockRule()

或者您可以使用@JvmField批注将其标记为Java样式字段:

Or you can mark it as a Java style field with the @JvmField annotation:

@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

You can find more details in this answer: https://stackoverflow.com/a/32827600/4465208

Ps.如果您不打算在任何地方更改其值，也应该考虑将其设为val.

Ps. You should also consider making it a val if you don't intend on changing its value anywhere.

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