Roboelctric compose example

test.kt

package com.sal7one.testingrobo

import android.app.Application
import android.content.pm.ActivityInfo
import androidx.activity.ComponentActivity
import androidx.compose.ui.test.junit4.createComposeRule
import androidx.compose.ui.test.onNodeWithTag
import androidx.compose.ui.test.onNodeWithText
import androidx.compose.ui.test.performClick
import androidx.test.core.app.ApplicationProvider
import org.junit.Rule
import org.junit.Test
import org.junit.rules.TestWatcher
import org.junit.runner.Description
import org.junit.runner.RunWith
import org.robolectric.RobolectricTestRunner
import org.robolectric.Shadows.shadowOf
import org.robolectric.annotation.Config

@RunWith(RobolectricTestRunner::class)
@Config(manifest = Config.NONE)
class MainActivityTest {
    @get:Rule(order = 1)
    val addActivityToRobolectricRule = object : TestWatcher() {
        override fun starting(description: Description?) {
            super.starting(description)
            val appContext: Application = ApplicationProvider.getApplicationContext()
            val activityInfo = ActivityInfo().apply {
                name = ComponentActivity::class.java.name
                packageName = appContext.packageName
            }
            shadowOf(appContext.packageManager).addOrUpdateActivity(activityInfo)
        }
    }

    @get:Rule(order = 2)
    val composeTestRule = createComposeRule()

    @Test
    fun testComposeWithRobolectric() {

        composeTestRule.setContent {
            Greeting("")
        }

        composeTestRule.onNodeWithTag("ClickableButton").performClick()
        composeTestRule.onNodeWithTag("ClickableButton").performClick()
        composeTestRule.onNodeWithText("Clicked 2 times").assertExists()
        composeTestRule.onNodeWithTag("ClickableButton").performClick()
        composeTestRule.onNodeWithText("Clicked 3 times").assertExists()
        composeTestRule.onNodeWithTag("ClickableButton").performClick()
        composeTestRule.onNodeWithText("Clicked 3 times").assertDoesNotExist()

    }
}


@Composable
fun Greeting(name: String, modifier: Modifier = Modifier) {
    var count by remember { mutableStateOf(0) }

    Button(onClick = { count++ }, modifier=Modifier.testTag("ClickableButton")) {
        Text("Clicked $count times", modifier = Modifier.testTag("TextCounter"))
    }
}

[versions]
agp = "8.7.1"
kotlin = "2.0.0"
coreKtx = "1.15.0"
junit = "4.13.2"
robolectric = "4.14"
junitVersion = "1.2.1"
espressoCore = "3.6.1"
lifecycleRuntimeKtx = "2.8.7"
activityCompose = "1.9.3"
composeBom = "2024.04.01"
uiTestJunit4Android = "1.7.5"

[libraries]
androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
junit = { group = "junit", name = "junit", version.ref = "junit" }
roboelctric = { group = "org.robolectric", name = "robolectric", version.ref = "robolectric" }
androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" }
androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activityCompose" }
androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" }
androidx-ui = { group = "androidx.compose.ui", name = "ui" }
androidx-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
androidx-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
androidx-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
androidx-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
androidx-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
androidx-material3 = { group = "androidx.compose.material3", name = "material3" }
androidx-ui-test-junit4-android = { group = "androidx.compose.ui", name = "ui-test-junit4-android", version.ref = "uiTestJunit4Android" }

[plugins]
android-application = { id = "com.android.application", version.ref = "agp" }
kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }




    implementation(libs.androidx.core.ktx)
    implementation(libs.androidx.lifecycle.runtime.ktx)
    implementation(libs.androidx.activity.compose)
    implementation(platform(libs.androidx.compose.bom))
    implementation(libs.androidx.ui)
    implementation(libs.androidx.ui.graphics)
    implementation(libs.androidx.ui.tooling.preview)
    implementation(libs.androidx.material3)
    implementation(libs.androidx.ui.test.junit4.android)
    testImplementation(libs.junit)
    testImplementation("androidx.compose.ui:ui-test-junit4:1.7.5")
    debugImplementation("androidx.compose.ui:ui-test-manifest:1.7.5")
    testImplementation(libs.roboelctric)
    androidTestImplementation(libs.androidx.junit)
    androidTestImplementation(libs.androidx.espresso.core)
    androidTestImplementation(platform(libs.androidx.compose.bom))
    androidTestImplementation(libs.androidx.ui.test.junit4)
    debugImplementation(libs.androidx.ui.tooling)
    debugImplementation(libs.androidx.ui.test.manifest)
    
    
    // Gradle properties
testOptions.unitTests.isIncludeAndroidResources = true