Implement stream reader for trips (#1)

src/test/java/de/stklcode/pubtrans/ura/reader/AsyncUraTripReaderTest.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2016-2018 Stefan Kalscheuer
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package de.stklcode.pubtrans.ura.reader;
+
+import de.stklcode.pubtrans.ura.UraClientTest;
+import de.stklcode.pubtrans.ura.model.Trip;
+import org.junit.jupiter.api.Test;
+
+import java.net.MalformedURLException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.empty;
+import static org.hamcrest.Matchers.not;
+import static org.hamcrest.core.Is.is;
+
+/**
+ * Unit test for the asynchronous URA Trip reader.
+ *
+ * @author Stefan Kalscheuer
+ */
+public class AsyncUraTripReaderTest {
+
+    @Test
+    public void readerTest() throws InterruptedException, MalformedURLException {
+        // The list which will be populated by the callback.
+        List<Trip> trips = new ArrayList<>();
+
+        // Start with V1 data.
+        AsyncUraTripReader tr = new AsyncUraTripReader(
+                UraClientTest.class.getResource("stream_V1_stops_all.txt"),
+                Collections.singletonList(trips::add)
+        );
+
+        // Read for 2 seconds before closing.
+        tr.open();
+        TimeUnit.SECONDS.sleep(1);
+        tr.close();
+
+        assertThat("Trips should not be empty after 1s", trips, is(not(empty())));
+        assertThat("Unexpected number of trips after 1s", trips.size(), is(7));
+
+        // Clear trip list and repeat with V2 data.
+        trips.clear();
+        tr = new AsyncUraTripReader(
+                UraClientTest.class.getResource("stream_V2_stops_all.txt"),
+                Collections.singletonList(trips::add)
+        );
+
+        // Read for 2 seconds before closing.
+        tr.open();
+        TimeUnit.SECONDS.sleep(1);
+        tr.close();
+
+        assertThat("Trips should not be empty after 1s", trips, is(not(empty())));
+        assertThat("Unexpected number of trips after 1s", trips.size(), is(7));
+    }
+
+
+}