Android Unit Test problem : No instrumentation registered! Must run under a registering instrumentation

I followed Android Developer doc and try to make a simple unit test in a Android Project.

But I try to run the unit test with ApplicationProvider.getApplicationContext<Context>() than I got a exception:

java.lang.IllegalStateException: No instrumentation registered! Must run under a registering instrumentation.

It seen like I do not registered instrumentation. but the doc dose not mention any thing about this.

It works normal if I do implement Robolectric Library and use @RunWith(Robolectrictestrunner::class.java)(and also I need to endure long time setting at first run.). But it's pretty strange because the doc says include the Robolectric environment in androidx.test:core

I want to know did missing something to setting or other right way to unit test with something like SparseArray or the other thing belong Android SDK.

Here is my build.gradle：

plugins {
    id 'com.android.application'
    id 'kotlin-android'
}

android {
    compileSdkVersion 30
    buildToolsVersion "30.0.2"

    defaultConfig {
        applicationId "com.example.myapplication2"
        minSdkVersion 23
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
    testOptions {
        unitTests.includeAndroidResources = true
    }
}

dependencies {

    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    implementation 'androidx.core:core-ktx:1.3.2'
    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'com.google.android.material:material:1.2.1'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'

    // Required -- JUnit 4 framework
    testImplementation 'junit:junit:4.13.1'
    // Optional -- Robolectric environment
    testImplementation 'androidx.test:core:1.3.0'
    // Optional -- Mockito framework
    testImplementation 'org.mockito:mockito-core:2.19.1'

    testImplementation 'org.robolectric:robolectric:4.4'

    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}