Add Main Activity Unit Tests (#4171)

app/src/test/kotlin/fr/free/nrw/commons/contributions/MainActivityUnitTests.kt

@@ -0,0 +1,124 @@
+package fr.free.nrw.commons.contributions
+
+import android.content.Context
+import fr.free.nrw.commons.TestCommonsApplication
+import fr.free.nrw.commons.navtab.NavTabLayout
+import fr.free.nrw.commons.nearby.Place
+import fr.free.nrw.commons.nearby.fragments.NearbyParentFragment
+import org.junit.Assert
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mock
+import org.mockito.MockitoAnnotations
+import org.robolectric.Robolectric
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.RuntimeEnvironment
+import org.robolectric.annotation.Config
+import org.robolectric.fakes.RoboMenuItem
+import java.lang.reflect.Field
+
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [21], application = TestCommonsApplication::class)
+class MainActivityUnitTests {
+
+    private lateinit var activity: MainActivity
+
+    private lateinit var context: Context
+
+    private lateinit var menuItem: RoboMenuItem
+
+    @Mock
+    private lateinit var place: Place
+
+    @Mock
+    private lateinit var tabLayout: NavTabLayout
+
+    @Mock
+    private lateinit var nearbyParentFragment: NearbyParentFragment
+
+
+    @Before
+    fun setUp() {
+
+        MockitoAnnotations.initMocks(this)
+
+        activity = Robolectric.buildActivity(MainActivity::class.java).get()
+
+        context = RuntimeEnvironment.application.applicationContext
+
+        menuItem = RoboMenuItem(context)
+
+        val fieldNavTabLayout: Field =
+            MainActivity::class.java.getDeclaredField("tabLayout")
+        fieldNavTabLayout.isAccessible = true
+        fieldNavTabLayout.set(activity, tabLayout)
+
+        val fieldNearbyParentFragment: Field =
+            MainActivity::class.java.getDeclaredField("nearbyParentFragment")
+        fieldNearbyParentFragment.isAccessible = true
+        fieldNearbyParentFragment.set(activity, nearbyParentFragment)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun checkActivityNotNull() {
+        Assert.assertNotNull(activity)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnSupportNavigateUp() {
+        activity.onSupportNavigateUp()
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testCenterMapToPlace() {
+        activity.centerMapToPlace(place)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnOptionsItemSelected() {
+        activity.onOptionsItemSelected(menuItem)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnBackStackChanged() {
+        activity.onBackStackChanged()
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnBackPressed() {
+        activity.onBackPressed()
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testSetNumOfUploads() {
+        activity.setNumOfUploads(0)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testShowTabs() {
+        activity.showTabs()
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testHideTabs() {
+        activity.hideTabs()
+    }
+
+
+    @Test
+    @Throws(Exception::class)
+    fun testSetSelectedItemId() {
+        activity.setSelectedItemId(0)
+    }
+
+}