Prefix config parameter

build.gradle

@@ -16,7 +16,7 @@ apply plugin: 'signing'
 apply plugin: 'kotlin-android'
 
 ext {
-    splitVersion = '3.4.0'
+    splitVersion = '3.5.0-alpha-1'
 }
 
 android {

gradle.properties

@@ -1,4 +1,5 @@
 ossrhUsername=
 ossrhPassword=
-android.enableJetifier=true
 android.useAndroidX=true
+
+kotlin.stdlib.default.dependency=false

src/androidTest/java/helper/TestableSplitConfigBuilder.java

@@ -60,6 +60,8 @@ public class TestableSplitConfigBuilder {
     private long mDefaultSSEConnectionDelayInSecs = ServiceConstants.DEFAULT_SSE_CONNECTION_DELAY_SECS;
     private long mSSEDisconnectionDelayInSecs = 60L;
 
+    private String mPrefix = "";
+
     public TestableSplitConfigBuilder() {
         mServiceEndpoints = ServiceEndpoints.builder().build();
     }
@@ -249,6 +251,11 @@ public TestableSplitConfigBuilder sseDisconnectionDelayInSecs(long seconds) {
         return this;
     }
 
+    public TestableSplitConfigBuilder prefix(String prefix) {
+        this.mPrefix = prefix;
+        return this;
+    }
+
     public SplitClientConfig build() {
         Constructor constructor = SplitClientConfig.class.getDeclaredConstructors()[0];
         constructor.setAccessible(true);
@@ -300,7 +307,8 @@ public SplitClientConfig build() {
                     mUserConsent,
                     mEncryptionEnabled,
                     mDefaultSSEConnectionDelayInSecs,
-                    mSSEDisconnectionDelayInSecs);
+                    mSSEDisconnectionDelayInSecs,
+                    mPrefix);
             return config;
         } catch (Exception e) {
             Logger.e("Error creating Testable Split client builder: "

src/androidTest/java/tests/database/DatabaseInitializationTest.java

@@ -0,0 +1,186 @@
+package tests.database;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.net.URI;
+import java.util.Arrays;
+import java.util.concurrent.LinkedBlockingDeque;
+
+import fake.HttpClientMock;
+import fake.HttpResponseMock;
+import fake.HttpResponseMockDispatcher;
+import fake.HttpStreamResponseMock;
+import helper.IntegrationHelper;
+import io.split.android.client.SplitClientConfig;
+import io.split.android.client.SplitFactory;
+import io.split.android.client.api.Key;
+import io.split.android.client.network.HttpMethod;
+
+public class DatabaseInitializationTest {
+
+    private HttpClientMock mHttpClientMock;
+    private Context mContext;
+
+    @Before
+    public void setUp() throws IOException {
+        mContext = InstrumentationRegistry.getInstrumentation().getContext();
+        mHttpClientMock = new HttpClientMock(new HttpResponseMockDispatcher() {
+            @Override
+            public HttpResponseMock getResponse(URI uri, HttpMethod method, String body) {
+                return new HttpResponseMock(400, "");
+            }
+
+            @Override
+            public HttpStreamResponseMock getStreamResponse(URI uri) {
+                try {
+                    return new HttpStreamResponseMock(400, new LinkedBlockingDeque<>(0));
+                } catch (IOException e) {
+                    return null;
+                }
+            }
+        });
+    }
+
+    @Test
+    public void initializationWithNullApiKeyResultsInNullFactory() throws IOException {
+        SplitFactory factory = IntegrationHelper.buildFactory(null,
+                new Key("matchingKey"),
+                IntegrationHelper.basicConfig(),
+                mContext,
+                mHttpClientMock);
+
+        assertNull(factory);
+    }
+
+    @Test
+    public void initializationWithoutPrefixCreatesCorrectDatabaseName() {
+        String[] initialDatabaseList = getDbList(mContext);
+        SplitFactory factory = IntegrationHelper.buildFactory("abcdefghijkl",
+                new Key("matchingKey"),
+                IntegrationHelper.basicConfig(),
+                mContext,
+                mHttpClientMock);
+
+        String[] finalDatabaseList = getDbList(mContext);
+
+        assertNotNull(factory);
+        assertEquals(0, initialDatabaseList.length);
+        assertEquals("abcdijkl", finalDatabaseList[0]);
+    }
+
+    @Test
+    public void initializationWithPrefixCreatesCorrectDatabaseName() {
+        String[] initialDatabaseList = getDbList(mContext);
+        SplitFactory factory = IntegrationHelper.buildFactory("abcdefghijkl",
+                new Key("matchingKey"),
+                SplitClientConfig.builder().prefix("my_prefix").build(),
+                mContext,
+                mHttpClientMock);
+
+        String[] finalDatabaseList = getDbList(mContext);
+
+        assertNotNull(factory);
+        assertEquals(0, initialDatabaseList.length);
+        assertEquals("my_prefixabcdijkl", finalDatabaseList[0]);
+    }
+
+    @Test
+    public void factoriesWithSameSdkKeyCreateOnlyOneDatabase() {
+        String[] initialDatabaseList = getDbList(mContext);
+        SplitFactory factory1 = IntegrationHelper.buildFactory("abcdefghijkl",
+                new Key("matchingKey"),
+                IntegrationHelper.basicConfig(),
+                mContext,
+                mHttpClientMock);
+
+        SplitFactory factory2 = IntegrationHelper.buildFactory("abcdefghijkl",
+                new Key("matchingKey2"),
+                IntegrationHelper.basicConfig(),
+                mContext,
+                mHttpClientMock);
+
+        String[] finalDatabaseList = getDbList(mContext);
+
+        assertNotNull(factory1);
+        assertNotNull(factory2);
+        assertEquals(0, initialDatabaseList.length);
+        assertEquals(1, finalDatabaseList.length);
+        assertEquals("abcdijkl", finalDatabaseList[0]);
+    }
+
+    @Test
+    public void oneFactoryWithPrefixCreatesNewDatabase() {
+        String[] initialDatabaseList = getDbList(mContext);
+        SplitFactory factory1 = IntegrationHelper.buildFactory("abcdefghijkl",
+                new Key("matchingKey"),
+                SplitClientConfig.builder().build(),
+                mContext,
+                mHttpClientMock);
+
+        SplitFactory factory2 = IntegrationHelper.buildFactory("abcdefghijkl",
+                new Key("matchingKey"),
+                SplitClientConfig.builder().prefix("my_prefix").build(),
+                mContext,
+                mHttpClientMock);
+
+        String[] finalDatabaseList = getDbList(mContext);
+
+        assertNotNull(factory1);
+        assertNotNull(factory2);
+        assertEquals(0, initialDatabaseList.length);
+        assertEquals(2, finalDatabaseList.length);
+        assertEquals("abcdijkl", finalDatabaseList[0]);
+        assertEquals("my_prefixabcdijkl", finalDatabaseList[1]);
+    }
+
+    @Test
+    public void usingInvalidPrefixResultsInIgnoredPrefix() {
+        String[] initialDatabaseList = getDbList(mContext);
+
+        SplitFactory factory = IntegrationHelper.buildFactory("abcdefghijkl",
+                new Key("matchingKey"),
+                SplitClientConfig.builder().prefix(":l").build(),
+                mContext,
+                mHttpClientMock);
+
+        String[] finalDatabaseList = getDbList(mContext);
+
+        assertNotNull(factory);
+        assertEquals(0, initialDatabaseList.length);
+        assertEquals(1, finalDatabaseList.length);
+        assertEquals("abcdijkl", finalDatabaseList[0]);
+    }
+
+    @Test
+    public void usingNullPrefixResultsInIgnoredPrefix() {
+        String[] initialDatabaseList = getDbList(mContext);
+
+        SplitFactory factory = IntegrationHelper.buildFactory("abcdefghijkl",
+                new Key("matchingKey"),
+                SplitClientConfig.builder().prefix(null).build(),
+                mContext,
+                mHttpClientMock);
+
+        String[] finalDatabaseList = getDbList(mContext);
+
+        assertNotNull(factory);
+        assertEquals(0, initialDatabaseList.length);
+        assertEquals(1, finalDatabaseList.length);
+        assertEquals("abcdijkl", finalDatabaseList[0]);
+    }
+
+    private static String[] getDbList(Context context) {
+        // remove -journal dbs since we're not interested in them
+        return Arrays.stream(context.databaseList()).filter(db -> !db.endsWith("-journal")).toArray(String[]::new);
+    }
+}

src/androidTest/java/tests/integration/sets/FlagSetsEvaluationTest.java

@@ -8,7 +8,6 @@
 
 import androidx.test.platform.app.InstrumentationRegistry;
 
-import org.junit.Before;
 import org.junit.Test;
 
 import java.io.IOException;
@@ -39,7 +38,7 @@
 
 public class FlagSetsEvaluationTest {
 
-    private final FileHelper fileHelper = new FileHelper();
+    private final FileHelper mFileHelper = new FileHelper();
     private final Context mContext = InstrumentationRegistry.getInstrumentation().getContext();
 
     @Test
@@ -163,7 +162,7 @@ private SplitClient getClient(
     }
 
     private String loadSplitChangeWithSet(int setsCount) {
-        String change = fileHelper.loadFileContent(mContext, "split_changes_flag_set-" + setsCount + ".json");
+        String change = mFileHelper.loadFileContent(mContext, "split_changes_flag_set-" + setsCount + ".json");
         SplitChange parsedChange = Json.fromJson(change, SplitChange.class);
         parsedChange.since = parsedChange.till;