Jetpack Compose: CustomViewTest

CustomViewTest.kt

import androidx.compose.ui.test.assertIsDisplayed
import androidx.compose.ui.test.junit4.createComposeRule
import androidx.compose.ui.test.onNodeWithText
import androidx.compose.ui.test.performClick
import androidx.test.ext.junit.runners.AndroidJUnit4
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith
import kotlin.test.assertTrue

//https://developer.android.com/jetpack/compose/testing
@RunWith(AndroidJUnit4::class)
class CustomViewTest {
    @get:Rule
    val composeTestRule = createComposeRule()
    // createAndroidComposeRule<MainActivity>() if you need access to the activityTestRule
    // createComposeRule() if you don't need access to the activityTestRule

    @Test
    fun MyTest() {
        // Start the app

        var isClicked = false

        composeTestRule.setContent {
            MyTheme {
                val data = DataCustomView("my title", "my description")
                MyCustomView(data, object: MyInterface {
                    override fun onButtonAClicked() {
                        isClicked = true
                    }

                    override fun onButtonBClicked() {
                        TODO("Not yet implemented")
                    }

                    override fun onUserSwipe(coordinate: List<Double>) {
                        TODO("Not yet implemented")
                    }
                })
            }
        }

        composeTestRule.onNodeWithText("my title").assertIsDisplayed()
        composeTestRule.onNodeWithText("my description").assertIsDisplayed()
        composeTestRule.onNodeWithText("my title").performClick()
        assertTrue(isClicked, "click was performed")

    }
}