add test and minor refactoring for gateway selection

1 files changed, 172 insertions, 0 deletions

diff --git a/app/src/test/java/se/leap/bitmaskclient/eip/GatewaySelectorTest.java b/app/src/test/java/se/leap/bitmaskclient/eip/GatewaySelectorTest.java
new file mode 100644
index 00000000..6d858d39
--- /dev/null
+++ b/app/src/test/java/se/leap/bitmaskclient/eip/GatewaySelectorTest.java
@@ -0,0 +1,172 @@
+package se.leap.bitmaskclient.eip;
+
+import com.tngtech.java.junit.dataprovider.DataProvider;
+import com.tngtech.java.junit.dataprovider.DataProviderRunner;
+import com.tngtech.java.junit.dataprovider.UseDataProvider;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.powermock.core.classloader.annotations.PrepareForTest;
+import org.powermock.modules.junit4.PowerMockRunner;
+import org.powermock.modules.junit4.PowerMockRunnerDelegate;
+
+import java.io.IOException;
+import java.util.ArrayList;
+
+import se.leap.bitmaskclient.Provider;
+import se.leap.bitmaskclient.utils.ConfigHelper;
+
+import static junit.framework.Assert.assertEquals;
+import static junit.framework.Assert.assertTrue;
+import static org.powermock.api.mockito.PowerMockito.mockStatic;
+import static org.powermock.api.mockito.PowerMockito.when;
+import static se.leap.bitmaskclient.Constants.PROVIDER_PRIVATE_KEY;
+import static se.leap.bitmaskclient.Constants.PROVIDER_VPN_CERTIFICATE;
+import static se.leap.bitmaskclient.testutils.TestSetupHelper.getInputAsString;
+
+/**
+ * Created by cyberta on 18.12.18.
+ */
+@RunWith(PowerMockRunner.class)
+@PowerMockRunnerDelegate(DataProviderRunner.class)
+@PrepareForTest({ConfigHelper.class})
+public class GatewaySelectorTest {
+    public static final String TAG = GatewaySelectorTest.class.getSimpleName();
+
+    /**
+     * locations": {
+     "name": ""Frankfurt"",
+     "timezone": "+1"
+     },
+     ""Seattle, WA"__wa": {
+     "name": ""Seattle, WA", WA",
+     "timezone": "-7"
+     },
+     ""Moscow"": {
+     "country_code": "RU",
+     "hemisphere": "N",
+     "name": ""Moscow"",
+     "timezone": "+3"
+     },
+     ""Manila"": {
+     "country_code": "PH",
+     "hemisphere": "N",
+     "name": ""Manila"",
+     "timezone": "+8"
+     }
+     },
+     */
+
+
+    GatewaySelector gatewaySelector;
+    JSONObject eipDefinition;
+    ArrayList<Gateway> gatewayList = new ArrayList<>();
+
+    @Before
+    public void setup() throws IOException, JSONException {
+        mockStatic(ConfigHelper.class);
+        eipDefinition = new JSONObject(getInputAsString(getClass().getClassLoader().getResourceAsStream("eip-service-four-gateways.json")));
+        JSONArray gateways = eipDefinition.getJSONArray("gateways");
+        for (int i = 0; i < gateways.length(); i++) {
+            JSONObject gw = gateways.getJSONObject(i);
+            JSONObject secrets = secretsConfiguration();
+            Gateway aux = new Gateway(eipDefinition, secrets, gw);
+            gatewayList.add(aux);
+        }
+
+    }
+
+    private JSONObject secretsConfiguration() throws IOException, JSONException {
+        JSONObject result = new JSONObject();
+        result.put(Provider.CA_CERT, getInputAsString(getClass().getClassLoader().getResourceAsStream("riseup.net.pem")));
+        result.put(PROVIDER_PRIVATE_KEY, getInputAsString(getClass().getClassLoader().getResourceAsStream("private_rsa_key.pem")));
+        result.put(PROVIDER_VPN_CERTIFICATE, getInputAsString(getClass().getClassLoader().getResourceAsStream("riseup.net.vpn_cert.pem")));
+        return result;
+    }
+
+    @DataProvider
+    public static Object[][] dataProviderTimezones() {
+        // @formatter:off
+        return new Object[][] {
+                //{ -12,  "Seattle, WA" }
+                { -11,  "Seattle, WA" },
+                { -10, "Seattle, WA" },
+                { -9, "Seattle, WA" },
+                { -8, "Seattle, WA" },
+                { -7, "Seattle, WA" }, // <-"Seattle, WA"
+                { -6, "Seattle, WA" },
+                { -5, "Seattle, WA" },
+                { -4, "Seattle, WA" },
+               // { -3, "Seattle, WA" },
+                { -2, "Frankfurt" },
+                { -1, "Frankfurt" },
+                { 0, "Frankfurt" },
+                { 1, "Frankfurt" }, // <- "Frankfurt"
+               // { 2, "Moscow" },
+                { 3, "Moscow" }, // <- "Moscow"
+                { 4, "Moscow" },
+                { 5, "Moscow" },
+                { 6, "Manila" },
+                { 7, "Manila" },
+                { 8, "Manila" }, // <- "Manila"
+                { 9, "Manila" },
+                { 10, "Manila" },
+                { 11, "Manila" },
+                { 12, "Manila" }
+        };
+        // @formatter:on
+    }
+
+    @DataProvider
+    public static Object[][] dataProviderSameDistanceTimezones() {
+        // @formatter:off
+        return new Object[][] {
+                { -12,  "Seattle, WA", "Manila" },
+                { -3, "Seattle, WA", "Frankfurt" },
+                { 2, "Moscow", "Frankfurt" },
+
+        };
+        // @formatter:on
+    }
+
+    @Test
+    @UseDataProvider("dataProviderTimezones")
+    public void testSelect(int timezone, String expected) {
+        when(ConfigHelper.getCurrentTimezone()).thenReturn(timezone);
+        gatewaySelector = new GatewaySelector(gatewayList);
+        assertEquals(expected, gatewaySelector.select().getName());
+    }
+
+    @Test
+    @UseDataProvider("dataProviderSameDistanceTimezones")
+    public void testSelectSameTimezoneDistance(int timezone, String expected1, String expected2) {
+        when(ConfigHelper.getCurrentTimezone()).thenReturn(timezone);
+        gatewaySelector = new GatewaySelector(gatewayList);
+        assertTrue(gatewaySelector.select().getName().equals(expected1) || gatewaySelector.select().getName().equals(expected2));
+    }
+
+    @Test
+    @UseDataProvider("dataProviderSameDistanceTimezones")
+    public void testNClostest_SameTimezoneDistance_chooseGatewayWithSameDistance(int timezone, String expected1, String expected2) {
+        when(ConfigHelper.getCurrentTimezone()).thenReturn(timezone);
+        gatewaySelector = new GatewaySelector(gatewayList);
+        ArrayList<String> gateways = new ArrayList<>();
+        gateways.add(gatewaySelector.select(0).getName());
+        gateways.add(gatewaySelector.select(1).getName());
+
+        assertTrue(gateways.contains(expected1) && gateways.contains(expected2));
+
+    }
+
+    @Test
+    public void testNClostest_OneTimezonePerSet_choseSecondClosestTimezone() {
+        when(ConfigHelper.getCurrentTimezone()).thenReturn(-4);
+        gatewaySelector = new GatewaySelector(gatewayList);
+
+        assertTrue("Frankfurt".equals(gatewaySelector.select(1).getName()));
+    }
+}
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