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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.*;
import android.content.*;
import android.test.*;

import org.json.*;

import java.io.IOException;
import java.util.Arrays;

import se.leap.bitmaskclient.Constants;
import se.leap.bitmaskclient.eip.*;

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

    GatewaysManager gateways_manager;
    Gateway gateway;
    JSONObject eip_definition;

    FromAssets assets;

    Context context;
    SharedPreferences preferences;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        context = getInstrumentation().getContext();
        assets = new FromAssets(context);
        mockGatewaysManager();
        mockRealGateway();
    }

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

    public void testOrderOfGateways_UDP_TCP() {
        String[] protocolsInOrder = {"udp", "tcp"};
        manipulateSupportedProtocols(protocolsInOrder);
        gateways_manager.fromEipServiceJson(eip_definition);
        gateways_manager.addFromString(gateway.toString());
        assertTrue(gateways_manager.select().toString().contains("[\"udp\",\"tcp\"]"));
        assertFalse(gateways_manager.select().toString().contains("[\"tcp\",\"udp\"]"));
    }

    public void testOrderOfGateways_TCP_UDP() {
        String[] protocolsInOrder = {"tcp", "udp"};
        manipulateSupportedProtocols(protocolsInOrder);
        gateways_manager.fromEipServiceJson(eip_definition);
        gateways_manager.addFromString(gateway.toString());
        assertFalse(gateways_manager.select().toString().contains("[\"udp\",\"tcp\"]"));
        assertTrue(gateways_manager.select().toString().contains("[\"tcp\",\"udp\"]"));
    }

    public void testAddFromString() {
        gateways_manager.addFromString("");
        assertEquals(0, gateways_manager.size());
        gateways_manager.addFromString(gateway.toString());
        assertEquals(1, gateways_manager.size());
    }

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

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

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

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

    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(Constants.SHARED_PREFERENCES, Activity.MODE_PRIVATE);
        gateways_manager = new GatewaysManager(context, preferences);
    }

    private void mockRealGateway() {
        try {
            eip_definition = new JSONObject(assets.toString(TestConstants.EIP_DEFINITION_FILE));
            JSONObject secrets = new JSONObject(assets.toString(TestConstants.SECRETS_FILE));
            JSONObject gateway = new JSONObject(assets.toString(TestConstants.GATEWAY_FILE));
            this.gateway = new Gateway(eip_definition, secrets, gateway);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void manipulateSupportedProtocols(String[] protocols) {
        try {
            eip_definition = new JSONObject(assets.toString(TestConstants.EIP_DEFINITION_FILE));
            JSONObject secrets = new JSONObject(assets.toString(TestConstants.SECRETS_FILE));
            JSONArray protocolJsonArray = new JSONArray(Arrays.asList(protocols));
            JSONArray gateways = eip_definition.getJSONArray("gateways");
            for (int i = 0; i < gateways.length(); i++) {
                JSONObject gatewayJson = gateways.getJSONObject(i);
                JSONObject capabilitiesJson = gatewayJson.getJSONObject("capabilities");
                capabilitiesJson.put("protocols", protocolJsonArray);
                gatewayJson.put("protocols", protocolJsonArray);
            }
            this.gateway = new Gateway(eip_definition, secrets, gateways.getJSONObject(0));
        } catch (JSONException e) {
            e.printStackTrace();
            assertFalse(true);
        } catch (IOException e) {
            e.printStackTrace();
            assertFalse(true);
        }

    }

    private void mockArtificialGateway() {
        try {
            eip_definition = new JSONObject(assets.toString(TestConstants.EIP_DEFINITION_FILE));
            JSONObject secrets = new JSONObject(assets.toString(TestConstants.SECRETS_FILE).replace("6u6", "7u7"));
            JSONObject gateway = new JSONObject(assets.toString(TestConstants.GATEWAY_FILE));
            this.gateway = new Gateway(eip_definition, secrets, gateway);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}