Junit4 Android TestField文本测试

@RunWith(AndroidJUnit4.class)
@LargeTest
public class TipActivityTests {

    @Rule
    public ActivityTestRule<TipActivity> mActivityRule = new ActivityTestRule<>(TipActivity.class);

    @Test
    public void initialValues() {
        onView(withId(R.id.tip_label_base_price)).check(matches(ViewMatchers.withText("45"")));
    }

}

但是我收到错误’with text：is“45”’与所选视图不匹配.
    预期：带文字：是“45”：

android.support.test.espresso.base.DefaultFailureHandler$AssertionFailedWithCauseError: 'with text: is "45"' doesn't match the selected view.
Expected: with text: is "45"
Got: "AppCompatTextView{id=2131689669, res-name=tip_label_base_price, visibility=VISIBLE, width=266, height=106, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, root-is-layout-requested=false, has-input-connection=false, x=141.0, y=96.0, text=$45.00, input-type=0, ime-target=false, has-links=false}"

它对我来说没有意义,它不应该打印字段的实际值与比较值？