这是我的示例代码:
SomeClass.java
public class SomeClass {
public SomeClass(Context mContext) {
final Looper looper = mContext.getMainLooper();
Handler mHandler = new Handler(looper);
}
}
someclasstest.java
public class SomeClassTest {
private SomeClass mSomeClass;
@Mock
private Context mContext;
@before
public void setup(){
mSomeClass = new SomeClass(mContext);
}
}
以上代码在SomeClass
中的final Looper looper = mContext.getMainLooper();
线上生成NullPointerException
。
如何设置模拟上下文对象以避免此例外?
假设您正在使用Mockito,可以将模拟行为添加到模拟对象:
public class SomeClassTest {
private SomeClass mSomeClass;
private Looper mLooper;
@before
public void setup(){
mLooper = mock(Looper.class);
Context ctx = mock(Context.class);
when(ctx.getMainLooper()).thenReturn(mLooper);
mSomeClass = new SomeClass(mContext);
}
}