Android：单元测试：如何使用 SensorManager 创建单元测试？
我有一个由 android 应用程序引用的普通 Jar 项目。 然后，我有 Functions.java 用于我想要创建单元测试类的常用函数。
以下是 Functions.java 中的示例函数：
public static double getAltitudeBySensor(float atmosphericPressure) {
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD
&& atmosphericPressure > 0d) {
return SensorManager.getAltitude(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, atmosphericPressure);
}
return 0d;
}
public static double toPixelX(double imageSize, android.location.Location upperLeft, android.location.Location lowerRight, android.location.Location target) {
double hypotenuse = upperLeft.distanceTo(target);
double bearing = upperLeft.bearingTo(target);
double currentDistanceX = Math.sin(bearing * Math.PI / OneEightyDeg) * hypotenuse;
// "percentage to mark the position"
double totalHypotenuse = upperLeft.distanceTo(lowerRight);
double totalDistanceX = totalHypotenuse * Math.sin(upperLeft.bearingTo(lowerRight) * Math.PI / OneEightyDeg);
double currentPixelX = currentDistanceX / totalDistanceX * imageSize;
return currentPixelX;
}
任何关于正确方向的指导都值得赞赏。
I have plain Jar Project that reference by android application.
Then, I have Functions.java for my common functions which I want to create unit test class.
Here are the sample functions inside the Functions.java:
public static double getAltitudeBySensor(float atmosphericPressure) {
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD
&& atmosphericPressure > 0d) {
return SensorManager.getAltitude(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, atmosphericPressure);
}
return 0d;
}
public static double toPixelX(double imageSize, android.location.Location upperLeft, android.location.Location lowerRight, android.location.Location target) {
double hypotenuse = upperLeft.distanceTo(target);
double bearing = upperLeft.bearingTo(target);
double currentDistanceX = Math.sin(bearing * Math.PI / OneEightyDeg) * hypotenuse;
// "percentage to mark the position"
double totalHypotenuse = upperLeft.distanceTo(lowerRight);
double totalDistanceX = totalHypotenuse * Math.sin(upperLeft.bearingTo(lowerRight) * Math.PI / OneEightyDeg);
double currentPixelX = currentDistanceX / totalDistanceX * imageSize;
return currentPixelX;
}
Any guidance on the right direction is appreciated.
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这两种方法都依赖于外部代码，因此很难进行单元测试。
如果您确实只想对逻辑进行单元测试，那么您需要重构，使它们依赖于接口，然后构建实现这些接口的模拟，以便您可以传入已知数据并测试是否收到适当的输出
Both methods have dependencies on external code so will be difficult to unit test.
If you really want to unit test just the logic then you'll need to refactor so they depend on interfaces and then build mocks that implement those interfaces so you can pass in known data and test if you receive the appropriate output