我有一个班级:
public class Unit {
private int id;
private String unit;
private String dimension;
private Float factor;
private Context ctx;
public Unit(Context context){ this.ctx = context; }
public Unit(String unit, String dimension, Float factor, Context context) {
super();
this.ctx = context;
setUnit(unit);
setDimension(dimension);
setFactor(factor);
}
public void setDimension(String d) {
String[] dimensions = ctx.getResources().getStringArray(R.array.dimensions_array);
if(!Arrays.asList(dimensions).contains(d)){
throw new IllegalArgumentException("Dimension is not one of the permittable dimension names");
}
this.dimension = d;
}
...
}
为了对strings.xml中的字符串数组验证“String dimension”,我需要调用getResources(),为此我需要一个上下文(这是我在这个类中有上下文的唯一原因。)< / p>
这在应用程序中运行良好,但现在我想为类Unit编写JUnit4测试,并希望调用Unit(),例如:
public class UnitTest {
Unit unit;
@Before
public void init() throws Exception {
System.out.println("Setting up ...");
unit = new Unit("dm","length", (float) 0.1,some_context); // What context should I put here?
}
@Test
...
}
如何在UnitTest类中获取上下文?或者我应该以某种方式改写测试?
答案 0 :(得分:3)
import static org.mockito.Mockito.*;
@RunWith(MockitoJunitRunner.class)
public class UnitTest {
@Mock private Context context;
@Before
public void init() throws Exception {
when(context.doStuff()).thenReturn("stuff");
unit = new Unit("dm","length", (float) 0.1, context);
}
...
答案 1 :(得分:1)
您可以使用配置了您选择的模拟库的Mock object,例如。 Mockito