Replace remaining AsyncTask with RxAndroid (#2681)

app/src/test/kotlin/fr/free/nrw/commons/delete/DeleteHelperTest.kt

@@ -0,0 +1,83 @@
+package fr.free.nrw.commons.delete
+
+import android.accounts.Account
+import android.content.Context
+import fr.free.nrw.commons.Media
+import fr.free.nrw.commons.auth.SessionManager
+import fr.free.nrw.commons.mwapi.MediaWikiApi
+import fr.free.nrw.commons.notification.NotificationHelper
+import fr.free.nrw.commons.utils.ViewUtilWrapper
+import junit.framework.Assert.*
+import org.junit.Before
+import org.junit.Test
+import org.mockito.InjectMocks
+import org.mockito.Mock
+import org.mockito.Mockito.`when`
+import org.mockito.MockitoAnnotations
+
+/**
+ * Tests for delete helper
+ */
+class DeleteHelperTest {
+
+    @Mock
+    internal var mwApi: MediaWikiApi? = null
+
+    @Mock
+    internal var sessionManager: SessionManager? = null
+
+    @Mock
+    internal var notificationHelper: NotificationHelper? = null
+
+    @Mock
+    internal var context: Context? = null
+
+    @Mock
+    internal var viewUtil: ViewUtilWrapper? = null
+
+    @Mock
+    internal var media: Media? = null
+
+    @InjectMocks
+    var deleteHelper: DeleteHelper? = null
+
+    /**
+     * Init mocks for test
+     */
+    @Before
+    fun setup() {
+        MockitoAnnotations.initMocks(this)
+    }
+
+    /**
+     * Make a successful deletion
+     */
+    @Test
+    fun makeDeletion() {
+        `when`(mwApi?.editToken).thenReturn("token")
+        `when`(sessionManager?.authCookie).thenReturn("Mock cookie")
+        `when`(sessionManager?.currentAccount).thenReturn(Account("TestUser", "Test"))
+        `when`(media?.displayTitle).thenReturn("Test file")
+        `when`(media?.filename).thenReturn("Test file.jpg")
+
+        val makeDeletion = deleteHelper?.makeDeletion(context, media, "Test reason")?.blockingGet()
+        assertNotNull(makeDeletion)
+        assertTrue(makeDeletion!!)
+    }
+
+    /**
+     * Test a failed deletion
+     */
+    @Test
+    fun makeDeletionForNullToken() {
+        `when`(mwApi?.editToken).thenReturn(null)
+        `when`(sessionManager?.authCookie).thenReturn("Mock cookie")
+        `when`(sessionManager?.currentAccount).thenReturn(Account("TestUser", "Test"))
+        `when`(media?.displayTitle).thenReturn("Test file")
+        `when`(media?.filename).thenReturn("Test file.jpg")
+
+        val makeDeletion = deleteHelper?.makeDeletion(context, media, "Test reason")?.blockingGet()
+        assertNotNull(makeDeletion)
+        assertFalse(makeDeletion!!)
+    }
+}