Somewhere Over the Rainbow

1. Warning Msg:

- 'instrumentationRegistry' is deprecated. Deprecated in Java

- 'AndroidUnit4' is deprecated. Deprecated in Java

2. solve : 

1) build.gradle (module) 파일 > 

1.1) testImplementation 'junit:junit:4.12'  -> androidTestImplementation 'androidx.test.ext:junit:1.1.0' 대체

1.2) Gradle files have changed since last project sync. A project sync ... Sync Now 클릭

android {
    ...
    defaultConfig {
        ...        
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    ...
}

dependencies {
    ...
//    testImplementation 'junit:junit:4.12' 제거
    androidTestImplementation 'androidx.test.ext:junit:1.1.0' // 추가 : junit:junit 대체
    androidTestImplementation 'androidx.test:runner:1.1.2-alpha02'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0-alpha02'
}

2) ExampleInstrumentedTest.kt >

2.1) InstrumentationRegistry.getTargetContext() -> InstrumentationRegistry.getInstrumentation().targetContext 대체

2.2) import 변경

//import android.support.test.InstrumentationRegistry -> androidx.test.platform.app.InstrumentationRegistry 대체

//import android.support.test.runner.AndroidJUnit4 -> androidx.test.ext.junit.runners.AndroidJUnit4 대체

package com.example.com

//import android.support.test.InstrumentationRegistry // deprecated
//import android.support.test.runner.AndroidJUnit4 // deprecated
import androidx.test.ext.junit.runners.AndroidJUnit4 // 추가 : deprecated 대체
import androidx.test.platform.app.InstrumentationRegistry //추가 : deprecated 대체

import org.junit.Test
import org.junit.runner.RunWith

import org.junit.Assert.*

/**
 * Instrumented test, which will execute on an Android device.
 *
 * See [testing documentation](http://d.android.com/tools/testing).
 */
@RunWith(AndroidJUnit4::class)
class ExampleInstrumentedTest {
    @Test
    fun useAppContext() {
        // Context of the app under test.
//        val appContext = InstrumentationRegistry.getTargetContext() // 제거
        val appContext = InstrumentationRegistry.getInstrumentation().targetContext // 추가 : deprecated 대체
        assertEquals("com.example.com", appContext.packageName)
    }
}

Error Message : (Lint message)

Library should be updated to be compatible with Kotlin 1.3 less... (Ctrl+F1) 

Inspection info: This inspection reports kotlinx.coroutines libraries dependencies in Gradle that should be updated in order to be compatible with Kotlin 1.3+

물론 build 는 completed successfully 이지만, 수정하자.

solution :

step1. coroutines 선언 부분 삭제

kotlin {
    experimental {
        coroutines "enable"
    }
}

step2. coroutines 버전 상향 1.1.1 (2019년 3월 11일 기준)

// Coroutines
api "org.jetbrains.kotlinx:kotlinx-coroutines-core:$rootProject.coroutines"
api "org.jetbrains.kotlinx:kotlinx-coroutines-android:$rootProject.coroutines"

ext {
    coroutines = '0.26.1'
    coroutines = '1.1.1'
}

comments : kotlin 1.3. 버전이 출시되면서 마이그레이션 됨.

링크 참조

https://github.com/Kotlin/kotlinx.coroutines 

https://blog.jetbrains.com/kotlin/2018/09/kotlin-1-3-rc-is-here-migrate-your-coroutines/