Add test case for DynamicSpeedTrackPathPainter.

MyTracks/src/com/google/android/apps/mytracks/maps/DynamicSpeedTrackPathPainter.java

@@ -20,6 +20,7 @@ import com.google.android.apps.mytracks.MapOverlay.CachedLocation;
 import com.google.android.maps.GeoPoint;
 import com.google.android.maps.Projection;
 import com.google.android.maps.mytracks.R;
+import com.google.common.annotations.VisibleForTesting;
 
 import android.content.Context;
 import android.graphics.Canvas;
@@ -138,4 +139,14 @@ public class  DynamicSpeedTrackPathPainter implements TrackPathPainter {
     }
     return path;
   }
+  
+  /**
+   * Returns coloredPaths.
+   * 
+   * @return coloredPaths
+   */
+  @VisibleForTesting
+  List<ColoredPath> getColoredPaths() {
+    return coloredPaths;
+  }
 }

MyTracksTest/src/com/google/android/apps/mytracks/TrackStubUtils.java

@@ -31,9 +31,9 @@ import android.location.Location;
 public class TrackStubUtils {
 
   static final String LOCATION_PROVIDER = "gps";
-  static final double INITIAL_LATITUDE = 22;
-  static final double INITIAL_LONGITUDE = 22;
-  static final double INITIAL_ALTITUDE = 22;
+  public static final double INITIAL_LATITUDE = 22;
+  public static final double INITIAL_LONGITUDE = 22;
+  public static final double INITIAL_ALTITUDE = 22;
   static final float INITIAL_ACCURACY = 5;
   static final float INITIAL_SPEED = 10;
   static final float INITIAL_BEARING = 3.0f;

MyTracksTest/src/com/google/android/apps/mytracks/maps/DynamicSpeedTrackPathPainterTest.java

@@ -0,0 +1,178 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * 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 com.google.android.apps.mytracks.maps;
+
+import com.google.android.apps.mytracks.ColoredPath;
+import com.google.android.apps.mytracks.MapOverlay;
+import com.google.android.apps.mytracks.MapOverlay.CachedLocation;
+import com.google.android.apps.mytracks.TrackStubUtils;
+import com.google.android.apps.mytracks.util.UnitConversions;
+import com.google.android.maps.mytracks.R;
+import com.google.android.testing.mocking.AndroidMock;
+import com.google.android.testing.mocking.UsesMocks;
+
+import android.location.Location;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Tests for the {@link DynamicSpeedTrackPathPainter}.
+ * 
+ * @author Youtao Liu
+ */
+public class DynamicSpeedTrackPathPainterTest extends TrackPathPainterTestCase {
+  private DynamicSpeedTrackPathPainter dynamicSpeedTrackPathPainter;
+  private TrackPathDescriptor trackPathDescriptor;
+  private static final int INVALID_LATITUDE = 100;
+  private static final int NUMBER_OF_LOCATIONS = 100;
+  private static final int SLOW_SPEED = 30;
+  private static final int NORMAL_SPEED = 50;
+
+  /**
+   * Tests the method
+   * {@link DynamicSpeedTrackPathPainter#updatePath(com.google.android.maps.Projection, android.graphics.Rect, int, Boolean, java.util.List)}
+   * when all locations are invalid.
+   */
+  public void testUpdatePath_AllInvalidLocation() {
+    initialTrackPathDescriptorMock();
+    List<CachedLocation> points = createCachedLocations(NUMBER_OF_LOCATIONS, false, -1);
+    for (int i = 0; i < 100; ++i) {
+      Location location = TrackStubUtils.createMyTracksLocation(INVALID_LATITUDE,
+          TrackStubUtils.INITIAL_LONGITUDE, TrackStubUtils.INITIAL_ALTITUDE);
+      CachedLocation cachedLocation = new CachedLocation(location);
+      points.add(cachedLocation);
+    }
+    dynamicSpeedTrackPathPainter.updatePath(myTracksOverlay.getMapProjection(mockView),
+        myTracksOverlay.getMapViewRect(mockView), 1, true, points);
+    AndroidMock.verify(trackPathDescriptor);
+    // Should be zero for there is no valid locations.
+    assertEquals(0, dynamicSpeedTrackPathPainter.getColoredPaths().size());
+
+  }
+
+  /**
+   * Tests the
+   * {@link DynamicSpeedTrackPathPainter#updatePath(com.google.android.maps.Projection, android.graphics.Rect, int, Boolean, java.util.List)}
+   * when all locations are valid.
+   */
+  public void testUpdatePath_AllValidLocation() {
+    initialTrackPathDescriptorMock();
+    List<CachedLocation> points = createCachedLocations(NUMBER_OF_LOCATIONS, true, -1);
+
+    // Gets a random number from 1 to numberOfLocations.
+    int startLocationIdx = (int) (1 + (NUMBER_OF_LOCATIONS - 1) * Math.random());
+
+    dynamicSpeedTrackPathPainter.updatePath(myTracksOverlay.getMapProjection(mockView),
+        myTracksOverlay.getMapViewRect(mockView), startLocationIdx, true, points);
+
+    AndroidMock.verify(trackPathDescriptor);
+    assertEquals(NUMBER_OF_LOCATIONS - startLocationIdx, dynamicSpeedTrackPathPainter
+        .getColoredPaths().size());
+
+  }
+
+  /**
+   * Tests the
+   * {@link DynamicSpeedTrackPathPainter#updatePath(com.google.android.maps.Projection, android.graphics.Rect, int, Boolean, java.util.List)}
+   * when all locations are valid.
+   */
+  public void testUpdatePath_CheckColoredPath() {
+    initialTrackPathDescriptorMock();
+    // Gets the slow speed for location.
+    int slowSpeed = (int) (SLOW_SPEED / (2 * UnitConversions.MS_TO_KMH));
+    // Gets the normal speed for location.
+    int normalSpeed = (int) ((SLOW_SPEED + NORMAL_SPEED) / (2 * UnitConversions.MS_TO_KMH));
+    // Gets the fast speed for location.
+    int fastSpeed = (int) (NORMAL_SPEED * 3 / UnitConversions.MS_TO_KMH);
+
+    // Get a number of startLocationIdx. And makes sure is less than
+    // numberOfFirstThreeSegments.
+    int startLocationIdx = NUMBER_OF_LOCATIONS / 8;
+    int numberOfFirstThreeSegments = NUMBER_OF_LOCATIONS / 4;
+    int numberOfLastSegment = NUMBER_OF_LOCATIONS - numberOfFirstThreeSegments * 3;
+
+    List<CachedLocation> points = createCachedLocations(numberOfFirstThreeSegments, true, slowSpeed);
+    points.addAll(createCachedLocations(numberOfFirstThreeSegments, true, normalSpeed));
+    points.addAll(createCachedLocations(numberOfFirstThreeSegments, true, fastSpeed));
+    points.addAll(createCachedLocations(numberOfLastSegment, true, slowSpeed));
+
+    dynamicSpeedTrackPathPainter.updatePath(myTracksOverlay.getMapProjection(mockView),
+        myTracksOverlay.getMapViewRect(mockView), startLocationIdx, true, points);
+
+    AndroidMock.verify(trackPathDescriptor);
+    List<ColoredPath> coloredPath = dynamicSpeedTrackPathPainter.getColoredPaths();
+    assertEquals(NUMBER_OF_LOCATIONS - startLocationIdx, coloredPath.size());
+
+    // Checks different speeds with different color in the coloredPath.
+    int i = 0;
+    for (; i < numberOfFirstThreeSegments - startLocationIdx; i++) {
+      assertEquals(getContext().getResources().getColor(R.color.slow_path), coloredPath.get(i)
+          .getPathPaint().getColor());
+    }
+    for (; i < numberOfFirstThreeSegments; i++) {
+      assertEquals(getContext().getResources().getColor(R.color.normal_path), coloredPath.get(i)
+          .getPathPaint().getColor());
+    }
+    for (; i < numberOfFirstThreeSegments; i++) {
+      assertEquals(getContext().getResources().getColor(R.color.fast_path), coloredPath.get(i)
+          .getPathPaint().getColor());
+    }
+    for (; i < numberOfLastSegment; i++) {
+      assertEquals(getContext().getResources().getColor(R.color.slow_path), coloredPath.get(i)
+          .getPathPaint().getColor());
+    }
+  }
+
+  /**
+   * Initials a mocked TrackPathDescriptor object.
+   */
+  @UsesMocks(TrackPathDescriptor.class)
+  private void initialTrackPathDescriptorMock() {
+    trackPathDescriptor = AndroidMock.createMock(TrackPathDescriptor.class);
+    AndroidMock.expect(trackPathDescriptor.getSlowSpeed()).andReturn(SLOW_SPEED);
+    AndroidMock.expect(trackPathDescriptor.getNormalSpeed()).andReturn(NORMAL_SPEED);
+    AndroidMock.replay(trackPathDescriptor);
+
+    dynamicSpeedTrackPathPainter = new DynamicSpeedTrackPathPainter(getContext(),
+        trackPathDescriptor);
+  }
+
+  /**
+   * Creates a list of CachedLocations.
+   * 
+   * @param number the number of locations
+   * @param isValid flag whether creates valid locations
+   * @param speed the speed of locations, and will be default value if less than
+   *          zero
+   * @return the simulated locations
+   */
+  private List<CachedLocation> createCachedLocations(int number, boolean isValid, float speed) {
+    List<CachedLocation> points = new ArrayList<MapOverlay.CachedLocation>();
+    double latitude = TrackStubUtils.INITIAL_LATITUDE;
+    if (!isValid) latitude = INVALID_LATITUDE;
+    for (int i = 0; i < number; ++i) {
+      Location location = TrackStubUtils.createMyTracksLocation(latitude,
+          TrackStubUtils.INITIAL_LONGITUDE, TrackStubUtils.INITIAL_ALTITUDE);
+      if (speed > 0) {
+        location.setSpeed(speed);
+      }
+      CachedLocation cachedLocation = new CachedLocation(location);
+      points.add(cachedLocation);
+    }
+    return points;
+  }
+}