MessageProvider - Test basic behaviour

package com.fsck.k9.provider;

import android.database.Cursor;

import android.net.Uri;

import android.support.test.runner.AndroidJUnit4;

import android.test.ProviderTestCase2;

import android.test.mock.MockContentResolver;

import com.fsck.k9.Account;

import com.fsck.k9.K9;

import com.fsck.k9.Preferences;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import java.util.List;

@RunWith(AndroidJUnit4.class)

public class MessageProviderTest extends ProviderTestCase2 {

    private MockContentResolver mMockResolver;

    public MessageProviderTest() {

        super(MessageProvider.class, MessageProvider.AUTHORITY);

    }

    @Before

    public void setUp() throws Exception {

        super.setUp();

        mMockResolver = getMockContentResolver();

        mContext = K9.app;

        Preferences preferences = Preferences.getPreferences(getMockContext());

        List<Account> accountList = preferences.getAccounts();

        for (Account account: accountList) {

            preferences.deleteAccount(account);

        }

    }

    private void createAccount() {

        Preferences preferences = Preferences.getPreferences(getMockContext());

        Account account = preferences.newAccount();

        account.setDescription("TestAccount");

        account.setChipColor(10);

        account.setStoreUri("imap://user@domain.com/");

        account.save(preferences);

    }

    @Test

    public void query_forAccounts_withNoAccounts_returnsEmptyCursor() {

        Cursor cursor = mMockResolver.query(

                Uri.parse("content://" + MessageProvider.AUTHORITY + "/accounts/"),

                null, null, null, null);

        boolean isNotEmpty = cursor.moveToFirst();

        assertFalse(isNotEmpty);

    }

    @Test

    public void query_forAccounts_withAccount_returnsCursorWithData() {

        createAccount();

        Cursor cursor = mMockResolver.query(

                Uri.parse("content://" + MessageProvider.AUTHORITY + "/accounts/"),

                null, null, null, null);

        boolean isNotEmpty = cursor.moveToFirst();

        assertTrue(isNotEmpty);

    }

    @Test

    public void query_forAccounts_withAccount_withNoProjection_returnsNumberAndName() {

        createAccount();

        Cursor cursor = mMockResolver.query(

                Uri.parse("content://" + MessageProvider.AUTHORITY + "/accounts/"),

                null, null, null, null);

        cursor.moveToFirst();

        assertEquals(2, cursor.getColumnCount());

        assertEquals(0, cursor.getColumnIndex(MessageProvider.AccountColumns.ACCOUNT_NUMBER));

        assertEquals(1, cursor.getColumnIndex(MessageProvider.AccountColumns.ACCOUNT_NAME));

        assertEquals(0, cursor.getInt(0));

        assertEquals("TestAccount", cursor.getString(1));

    }

    @Test

    public void query_forInboxMessages_whenEmpty_returnsEmptyCursor() {

        Cursor cursor = mMockResolver.query(

                Uri.parse("content://" + MessageProvider.AUTHORITY + "/inbox_messages/"),

                null, null, null, null);

        boolean isNotEmpty = cursor.moveToFirst();

        assertFalse(isNotEmpty);

    }

    @Test

    public void query_forAccountUnreadMessages_whenNoAccount_returnsEmptyCursor() {

        Cursor cursor = mMockResolver.query(

                Uri.parse("content://" + MessageProvider.AUTHORITY + "/account_unread/0"),

                null, null, null, null);

        boolean isNotEmpty = cursor.moveToFirst();

        assertFalse(isNotEmpty);

    }

    @Test

    public void query_forAccountUnreadMessages_whenNoMessages_returns0Unread() {

        createAccount();

        Cursor cursor = mMockResolver.query(

                Uri.parse("content://" + MessageProvider.AUTHORITY + "/account_unread/0"),

                null, null, null, null);

        cursor.moveToFirst();

        assertEquals(2, cursor.getColumnCount());

        assertEquals(1, cursor.getColumnIndex(MessageProvider.UnreadColumns.ACCOUNT_NAME));

        assertEquals(0, cursor.getColumnIndex(MessageProvider.UnreadColumns.UNREAD));

        assertEquals(0, cursor.getInt(0));

        assertEquals("TestAccount", cursor.getString(1));

    }

}