Add tests for CommonsAppAdapter (#4818)

* Add tests for CommonsAppAdapter

* Remove robolectric dependency

app/src/test/kotlin/fr/free/nrw/commons/CommonsAppAdapterUnitTest.kt

@@ -0,0 +1,110 @@
+package fr.free.nrw.commons
+
+import com.nhaarman.mockitokotlin2.verify
+import com.nhaarman.mockitokotlin2.whenever
+import fr.free.nrw.commons.auth.SessionManager
+import fr.free.nrw.commons.kvstore.JsonKvStore
+import org.junit.Assert
+import org.junit.Before
+import org.junit.Test
+import org.mockito.Mock
+import org.mockito.MockitoAnnotations
+import org.wikipedia.dataclient.SharedPreferenceCookieManager
+import org.wikipedia.json.GsonMarshaller
+import org.wikipedia.login.LoginResult
+
+class CommonsAppAdapterUnitTest {
+
+    private lateinit var adapter: CommonsAppAdapter
+
+    @Mock
+    private lateinit var sessionManager: SessionManager
+
+    @Mock
+    private lateinit var preferences: JsonKvStore
+
+    @Mock
+    private lateinit var result: LoginResult
+
+    @Mock
+    private lateinit var cookies: SharedPreferenceCookieManager
+
+    @Before
+    fun setUp() {
+        MockitoAnnotations.initMocks(this)
+        adapter = CommonsAppAdapter(sessionManager, preferences)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun checkAdapterNotNull() {
+        Assert.assertNotNull(adapter)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testGetMediaWikiBaseUrl() {
+        Assert.assertEquals(adapter.mediaWikiBaseUrl, BuildConfig.COMMONS_URL)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testGetRestbaseUriFormat() {
+        Assert.assertEquals(adapter.restbaseUriFormat, BuildConfig.COMMONS_URL)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testGetDesiredLeadImageDp() {
+        Assert.assertEquals(adapter.desiredLeadImageDp, 640)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testIsLoggedIn() {
+        whenever(sessionManager.isUserLoggedIn).thenReturn(true)
+        Assert.assertEquals(adapter.isLoggedIn, true)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testGetUserName() {
+        whenever(sessionManager.userName).thenReturn("test")
+        Assert.assertEquals(adapter.userName, "test")
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testGetPassword() {
+        whenever(sessionManager.password).thenReturn("test")
+        Assert.assertEquals(adapter.password, "test")
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testUpdateAccount() {
+        adapter.updateAccount(result)
+        verify(sessionManager).updateAccount(result)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testSetCookies() {
+        adapter.cookies = cookies
+        verify(preferences).putString("cookie_store", GsonMarshaller.marshal(cookies))
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testLogErrorsInsteadOfCrashing() {
+        Assert.assertEquals(adapter.logErrorsInsteadOfCrashing(), false)
+    }
+
+    @Test
+    @Throws(Exception::class)
+    fun testGetCookiesCaseNull() {
+        whenever(preferences.contains("cookie_store")).thenReturn(false)
+        Assert.assertEquals(adapter.cookies, null)
+    }
+
+}