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DetailsActivityTest.kt
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DetailsActivityTest.kt
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/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.compose.samples.crane.details
import androidx.compose.samples.crane.R
import androidx.compose.samples.crane.data.ExploreModel
import androidx.compose.samples.crane.data.MADRID
import androidx.test.espresso.Espresso.onView
import androidx.test.espresso.assertion.ViewAssertions.matches
import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
import androidx.test.espresso.matcher.ViewMatchers.withId
import androidx.test.ext.junit.rules.ActivityScenarioRule
import androidx.test.platform.app.InstrumentationRegistry
import androidx.ui.test.AndroidComposeTestRule
import androidx.ui.test.assertIsDisplayed
import androidx.ui.test.onNodeWithText
import com.google.android.libraries.maps.MapView
import com.google.android.libraries.maps.model.CameraPosition
import com.google.android.libraries.maps.model.LatLng
import org.junit.Rule
import org.junit.Test
import java.util.concurrent.CountDownLatch
class DetailsActivityTest {
private val expectedDescription = "description"
private val testExploreModel = ExploreModel(MADRID, expectedDescription, "imageUrl")
@get:Rule
val composeTestRule = AndroidComposeTestRule(
ActivityScenarioRule<DetailsActivity>(
createDetailsActivityIntent(
InstrumentationRegistry.getInstrumentation().targetContext,
testExploreModel
)
)
)
@Test
fun mapView_cameraPositioned() {
composeTestRule.onNodeWithText(MADRID.nameToDisplay).assertIsDisplayed()
composeTestRule.onNodeWithText(expectedDescription).assertIsDisplayed()
onView(withId(R.id.map)).check(matches(isDisplayed()))
var cameraPosition: CameraPosition? = null
waitForMap(onCameraPosition = { cameraPosition = it })
val expected = LatLng(
testExploreModel.city.latitude.toDouble(),
testExploreModel.city.longitude.toDouble()
)
assert(expected.latitude == cameraPosition?.target?.latitude?.round(6))
assert(expected.longitude == cameraPosition?.target?.longitude?.round(6))
}
/**
* As the MapView is included using the AndroidView API, it cannot be referenced using Compose
* testing APIs. Therefore, we use the activityRule to get an instance of the DetailsActivity
* an findViewById using MapView's id.
*
* As obtaining the map is an asynchronous call, we use a CountDownLatch to make this
* call synchronous in the test.
*/
private fun waitForMap(onCameraPosition: (CameraPosition) -> Unit) {
val countDownLatch = CountDownLatch(1)
composeTestRule.activityRule.scenario.onActivity {
it.findViewById<MapView>(R.id.map).getMapAsync { map ->
onCameraPosition(map.cameraPosition)
countDownLatch.countDown()
}
}
countDownLatch.await()
}
}
private fun Double.round(decimals: Int = 2): Double = "%.${decimals}f".format(this).toDouble()