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Add unit test about CalorieUtils.java. And change the visiability of some methods to make them testable.

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This commit is contained in:
youtaol
2013-08-15 10:16:27 +08:00
parent d64b6a4d93
commit 75ac35bf53
2 changed files with 133 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MyTracks/src/com/google/android/apps/mytracks/util/CalorieUtils.java
+41 -21
View File
@@ -15,6 +15,8 @@
*/
package com.google.android.apps.mytracks.util;
import com.google.common.annotations.VisibleForTesting;
import android.location.Location;
/**
@@ -40,7 +42,8 @@ public class CalorieUtils {
/**
* Changes 4.5 miles per hour to meters per minutes.
*/
private static final double CRTICAL_SPEED_RUNNING = 4.5 * UnitConversions.MI_TO_KM * 1000 / 60;
@VisibleForTesting
static final double CRTICAL_SPEED_RUNNING = 4.5 * UnitConversions.MI_TO_KM * 1000 / 60;
public enum ActivityType {
CYCLING, FOOT
@@ -55,7 +58,8 @@ public class CalorieUtils {
* @param grade
* @return the VO2 value in ml/kg/min
*/
private static double calculateWalkingVO2(double speed, double grade) {
@VisibleForTesting
static double calculateWalkingVO2(double speed, double grade) {
/*
* 0.1 means oxygen cost per meter of moving each kilogram (kg) of body
* weight while walking (horizontally). 1.8 means oxygen cost per meter of
@@ -73,7 +77,8 @@ public class CalorieUtils {
* @param grade
* @return the VO2 value in ml/kg/min
*/
private static double calculateRunningVO2(double speed, double grade) {
@VisibleForTesting
static double calculateRunningVO2(double speed, double grade) {
/*
* 0.2 means oxygen cost per meter of moving each kg of body weight while
@@ -105,8 +110,8 @@ public class CalorieUtils {
* @param timeUsed how many times used in second
* @return the power value watts(Joule/second)
*/
private static double calculateCyclingCalories(double speed, double grade, int weight,
double timeUsed) {
@VisibleForTesting
static double calculateCyclingCalories(double speed, double grade, int weight, double timeUsed) {
// Get the Power.
double power = 9.8 * weight * speed * (0.0053 + grade) + 0.185 * (speed * speed * speed);
// Get the calories.
@@ -122,8 +127,8 @@ public class CalorieUtils {
* @param weight the weight of user
* @return the calories expenditure between the start and stop location
*/
private static double calculateExpenditureCycling(Location start, Location stop, double grade,
int weight) {
@VisibleForTesting
static double calculateExpenditureCycling(Location start, Location stop, double grade, int weight) {
// Seconds.
double time = (double) (stop.getTime() - start.getTime()) / 1000;
// Meter per second.
@@ -144,22 +149,14 @@ public class CalorieUtils {
* @param weight the weight of user
* @return the calories expenditure between the start and stop location
*/
private static double calculateExpenditureFoot(Location start, Location stop, double grade,
int weight) {
// Seconds.
double time = (double) (stop.getTime() - start.getTime()) / 1000;
@VisibleForTesting
static double calculateExpenditureFoot(Location start, Location stop, double grade, int weight) {
// Meter per minute.
double speed = (start.getSpeed() + stop.getSpeed()) * 60 / 2;
double VO2 = 0;
if (grade < 0) {
grade = 0;
}
if (speed > CRTICAL_SPEED_RUNNING) {
VO2 = calculateRunningVO2(speed, grade);
} else {
VO2 = calculateWalkingVO2(speed, grade);
}
// Get VO2
double VO2 = getVO2(speed, grade);
// Seconds.
double time = (double) (stop.getTime() - start.getTime()) / 1000;
// Change mL/kg/min to mL/kg.
double VO2All = VO2 * time / 60;
// Change mL/kg to L/kg.
@@ -168,6 +165,29 @@ public class CalorieUtils {
return VO2All * weight * VO2H_TO_KCAL;
}
/**
* Gets the VO2 value.
*
* @param start the start location
* @param stop the stop location
* @param grade the grade to calculate
* @return the VO2 value
*/
@VisibleForTesting
static double getVO2(double speed, double grade) {
if (grade < 0) {
grade = 0;
}
double VO2 = 0;
if (speed > CRTICAL_SPEED_RUNNING) {
VO2 = calculateRunningVO2(speed, grade);
} else {
VO2 = calculateWalkingVO2(speed, grade);
}
return VO2;
}
/**
* Calculates the calories expenditure between two locations.
*
MyTracksTest/src/com/google/android/apps/mytracks/util/CalorieUtilsTest.java
+92
View File
@@ -0,0 +1,92 @@
/*
* Copyright 2013 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.util;
import android.location.Location;
import android.location.LocationManager;
import junit.framework.TestCase;
/**
* A unit test for {@link CalorieUtils}.
*
* @author youtaol
*/
public class CalorieUtilsTest extends TestCase {
Location start = new Location(LocationManager.GPS_PROVIDER);
Location stop = new Location(LocationManager.GPS_PROVIDER);
private double grade = 10;
private int weight = 20;
@Override
protected void setUp() throws Exception {
super.setUp();
// Make the time interval is not 0.
stop.setTime(start.getTime() + 1000);
}
/**
* Checks using foot calculation equation.
*/
public void testGetCalories_foot() {
double actual = CalorieUtils.getCalories(start, stop, grade, weight,
CalorieUtils.ActivityType.FOOT);
double expected = CalorieUtils.calculateExpenditureFoot(start, stop, grade, weight);
assertEquals(expected, actual);
}
/**
* Checks whether using foot calculation equation while grade is negative.
*/
public void testGetCalories_footNegativeGrade() {
double actual = CalorieUtils.getCalories(start, stop, -5, weight,
CalorieUtils.ActivityType.FOOT);
double expected = CalorieUtils.calculateExpenditureFoot(start, stop, 0, weight);
assertEquals(expected, actual);
}
/**
* Checks using cycling calculation equation.
*/
public void testGetCalories_cycling() {
double actual = CalorieUtils.getCalories(start, stop, grade, weight,
CalorieUtils.ActivityType.CYCLING);
double expected = CalorieUtils.calculateExpenditureCycling(start, stop, grade, weight);
assertEquals(expected, actual);
}
/**
* Checks using running VO2 equation.
*/
public void testGetVO2_running() {
double actual = CalorieUtils.getVO2(CalorieUtils.CRTICAL_SPEED_RUNNING * 2, grade);
double expected = CalorieUtils.calculateRunningVO2(CalorieUtils.CRTICAL_SPEED_RUNNING * 2,
grade);
assertEquals(expected, actual);
}
/**
* Checks using walking VO2 equation.
*/
public void testGetVO2_walking() {
double actual = CalorieUtils.getVO2(CalorieUtils.CRTICAL_SPEED_RUNNING / 2, grade);
double expected = CalorieUtils.calculateWalkingVO2(CalorieUtils.CRTICAL_SPEED_RUNNING / 2,
grade);
assertEquals(expected, actual);
}
}