Add Category Details Activity Unit Tests (#4169)

app/src/test/kotlin/fr/free/nrw/commons/category/CategoryDetailsActivityUnitTests.kt

@@ -0,0 +1,114 @@
+package fr.free.nrw.commons.category
+
+import android.content.Context
+import android.view.Menu
+import android.view.MenuItem
+import fr.free.nrw.commons.TestAppAdapter
+import fr.free.nrw.commons.TestCommonsApplication
+import fr.free.nrw.commons.explore.categories.media.CategoriesMediaFragment
+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.RoboMenu
+import org.robolectric.fakes.RoboMenuItem
+import org.wikipedia.AppAdapter
+import java.lang.reflect.Field
+
+@RunWith(RobolectricTestRunner::class)
+@Config(sdk = [21], application = TestCommonsApplication::class)
+class CategoryDetailsActivityUnitTests {
+
+    private lateinit var activity: CategoryDetailsActivity
+
+    private lateinit var context: Context
+
+    private lateinit var menuItem: MenuItem
+
+    private lateinit var menu: Menu
+
+    @Mock
+    private lateinit var categoriesMediaFragment: CategoriesMediaFragment
+
+    @Before
+    fun setUp() {
+
+        MockitoAnnotations.initMocks(this)
+
+        AppAdapter.set(TestAppAdapter())
+
+        context = RuntimeEnvironment.application.applicationContext
+
+        activity = Robolectric.buildActivity(CategoryDetailsActivity::class.java).create().get()
+
+        val fieldCategoriesMediaFragment: Field =
+            CategoryDetailsActivity::class.java.getDeclaredField("categoriesMediaFragment")
+        fieldCategoriesMediaFragment.isAccessible = true
+        fieldCategoriesMediaFragment.set(activity, categoriesMediaFragment)
+
+        menuItem = RoboMenuItem(null)
+
+        menu = RoboMenu(context)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun checkActivityNotNull() {
+        Assert.assertNotNull(activity)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnMediaClicked() {
+        activity.onMediaClicked(0)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testGetMediaAtPosition() {
+        activity.getMediaAtPosition(0)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testGetTotalMediaCount() {
+        activity.totalMediaCount
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testGetContributionStateAt() {
+        activity.getContributionStateAt(0)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnCreateOptionsMenu() {
+        activity.onCreateOptionsMenu(menu)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnOptionsItemSelected() {
+        activity.onOptionsItemSelected(menuItem)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testOnBackPressed() {
+        activity.onBackPressed()
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testViewPagerNotifyDataSetChanged() {
+        activity.viewPagerNotifyDataSetChanged()
+    }
+
+}