fix: added test

Author: kikoso

maps-app/src/androidTest/java/com/google/maps/android/compose/ScaleBarTests.kt

@@ -0,0 +1,64 @@
+// Copyright 2023 Google LLC
+//
+// 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
+//
+//      http://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 com.google.maps.android.compose
+
+import androidx.compose.ui.test.junit4.createComposeRule
+import androidx.compose.ui.test.onNodeWithText
+import com.google.android.gms.maps.model.CameraPosition
+import com.google.android.gms.maps.model.LatLng
+import com.google.maps.android.compose.widgets.ScaleBar
+import org.junit.Rule
+import org.junit.Test
+import java.util.concurrent.CountDownLatch
+
+class ScaleBarTests {
+
+    @get:Rule
+    val composeTestRule = createComposeRule()
+
+    private lateinit var cameraPositionState: CameraPositionState
+
+    private fun initScaleBar(initialZoom: Float, initialPosition: LatLng) {
+        check(hasValidApiKey) { "Maps API key not specified" }
+
+        cameraPositionState = CameraPositionState(
+            position = CameraPosition.fromLatLngZoom(initialPosition, initialZoom)
+        )
+
+        composeTestRule.setContent {
+            ScaleBar(cameraPositionState = cameraPositionState)
+        }
+    }
+
+    @Test
+    fun testScaleBarInitialState() {
+        val initialZoom = 15f
+        val initialPosition = LatLng(37.7749, -122.4194) // San Francisco
+        initScaleBar(initialZoom, initialPosition)
+
+        composeTestRule.waitForIdle()
+
+        composeTestRule.onNodeWithText(
+            text = "ft",
+            substring = true,
+            ignoreCase = false
+        ).assertExists()
+        composeTestRule.onNodeWithText(
+            text = "m",
+            substring = true,
+            ignoreCase = false
+        ).assertExists()
+    }
+}