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/**
 * Copyright (c) 2013, 2014, 2015 LEAP Encryption Access Project and contributers
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package se.leap.bitmaskclient.test;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.test.InstrumentationTestCase;
import android.test.suitebuilder.annotation.MediumTest;
import android.test.suitebuilder.annotation.SmallTest;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;
import java.io.InputStream;

import se.leap.bitmaskclient.Dashboard;
import se.leap.bitmaskclient.eip.Gateway;
import se.leap.bitmaskclient.eip.GatewaysManager;

/**
 * @author parmegv
 */
public class testGatewaysManager extends InstrumentationTestCase {

    GatewaysManager gateways_manager;
    Gateway gateway;
    JSONObject eip_definition;

    Context context;
    SharedPreferences preferences;

    @Override
    protected void setUp() throws Exception {
        mockGatewaysManager();
        mockRealGateway();
        super.setUp();
    }

    @MediumTest
    public void testFromEipServiceJson() {
        gateways_manager.fromEipServiceJson(eip_definition);
        assertEquals(2, gateways_manager.size());
        gateways_manager.addFromString(gateway.toString());
        assertEquals(2, gateways_manager.size());
    }

    @SmallTest
    public void testAddFromString() {
        gateways_manager.addFromString("");
        gateways_manager.addFromString(gateway.toString());
    }

    @MediumTest
    public void testRemoveDuplicate() {
        gateways_manager.addFromString(gateway.toString());
        assertEquals(1, gateways_manager.size());

        mockArtificialGateway();
        gateways_manager.addFromString(gateway.toString());
        assertEquals(1, gateways_manager.size());
    }

    @MediumTest
    public void testToString() {
        assertEquals("[]", gateways_manager.toString());

        gateways_manager.addFromString(gateway.toString());
        assertEquals("["+gateway.toString()+"]", gateways_manager.toString());
    }

    @SmallTest
    public void testIsEmpty() {
        assertTrue(gateways_manager.isEmpty());
        gateways_manager.addFromString("");
        assertTrue(gateways_manager.isEmpty());
        gateways_manager.addFromString(gateway.toString());
        assertFalse(gateways_manager.isEmpty());
    }
    
    private void mockGatewaysManager() {
        context = getInstrumentation().getContext();
        preferences = context.getSharedPreferences(Dashboard.SHARED_PREFERENCES, Activity.MODE_PRIVATE);
        gateways_manager = new GatewaysManager(context, preferences);
    }

    private void mockRealGateway() {
        try {
            eip_definition = new JSONObject(fromAssets("eip-service-test.json"));
            JSONObject secrets = new JSONObject(fromAssets("secrets.json"));
            JSONObject gateway = new JSONObject(fromAssets("gateway.json"));
            this.gateway = new Gateway(eip_definition, secrets, gateway);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void mockArtificialGateway() {
        try {
            eip_definition = new JSONObject(fromAssets("eip-service-test.json"));
            JSONObject secrets = new JSONObject(fromAssets("secrets.json").replace("6u6", "7u7"));
            JSONObject gateway = new JSONObject(fromAssets("gateway.json"));
            this.gateway = new Gateway(eip_definition, secrets, gateway);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private String fromAssets(String filename) throws IOException, JSONException {
        String result = "";
        InputStream is = context.getAssets().open(filename);
        byte[] bytes = new byte[is.available()];
        if(is.read(bytes) > 0) {
            result = new String(bytes);
        }
        return result;
    }
}