Add test class for the AccountListAdapter

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

src/main/java/com/owncloud/android/ui/activity/ManageAccountsActivity.java

@@ -274,7 +274,7 @@ public class ManageAccountsActivity extends FileActivity
                                   String name = result.getString(AccountManager.KEY_ACCOUNT_NAME);
                                   AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), name);
                                   mAccountListAdapter = new AccountListAdapter(
-                                          ManageAccountsActivity.this,
+                                          this,
                                           getUserAccountManager(),
                                           getAccountListItems(),
                                           mTintedCheck

src/test/java/com/owncloud/android/ui/adapter/AccountListAdapterTest.java

@@ -0,0 +1,79 @@
+package com.owncloud.android.ui.adapter;
+
+import com.owncloud.android.R;
+import com.owncloud.android.ui.activity.ManageAccountsActivity;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mockito;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.Assert.*;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+/**
+ * Class used to test the AccountList Adapter
+ */
+public class AccountListAdapterTest {
+
+    private AccountListAdapter accountListAdapter;
+    private ManageAccountsActivity manageAccountsActivity;
+
+    /**
+     * Setting up and mocking the manageAccountsActivity class, and then mocking the method calls in the construction of
+     * the object
+     */
+    @Before
+    public void setup() {
+        manageAccountsActivity = mock(ManageAccountsActivity.class, Mockito.RETURNS_DEEP_STUBS);
+        when(manageAccountsActivity.getResources().getDimension(R.dimen.list_item_avatar_icon_radius))
+            .thenReturn(new Float(0.1));
+    }
+
+    /**
+     * Testing the getItemCount method, in the case of an empty List
+     */
+    @Test
+    public void test_getItemCountEmptyList() {
+        accountListAdapter = new AccountListAdapter(manageAccountsActivity, null,
+                                                    new ArrayList<>(), null);
+        assertEquals(0, accountListAdapter.getItemCount());
+    }
+
+    /**
+     * Testing the getItemCount method, in a normal case, of having two accounts
+     */
+    @Test
+    public void test_getItemCountNormalCase() {
+        List<AccountListItem> accounts = new ArrayList<>();
+        accounts.add(new AccountListItem());
+        accounts.add(new AccountListItem());
+
+        accountListAdapter = new AccountListAdapter(manageAccountsActivity, null, accounts, null);
+
+        assertEquals(2, accountListAdapter.getItemCount());
+    }
+
+    /**
+     * Testing a normal case of the getItem method
+     */
+    @Test
+    public void test_getItem() {
+        ManageAccountsActivity manageAccountsActivity = mock(ManageAccountsActivity.class, Mockito.RETURNS_DEEP_STUBS);
+        when(manageAccountsActivity.getResources().getDimension(R.dimen.list_item_avatar_icon_radius))
+            .thenReturn(new Float(0.1));
+
+        List<AccountListItem> accounts = new ArrayList<>();
+        accountListAdapter = new AccountListAdapter(manageAccountsActivity, null, accounts, null);
+
+        AccountListItem accountListItem1 = new AccountListItem();
+        AccountListItem accountListItem2 = new AccountListItem();
+        accounts.add(accountListItem1);
+        accounts.add(accountListItem2);
+
+        assertEquals(accountListItem2, accountListAdapter.getItem(1));
+    }
+}