Próbuję przetestować RecyclerView z AndroidJunit4, to jest mój kodu testu:Android RecyclerView Adapter daje zerowy na testowanie jednostkowe
package com.kaushik.myredmart.ui;
// all includes
@RunWith(AndroidJUnit4.class)
public class ProductListActivityTest {
@Rule
public ActivityTestRule<ProductListActivity> rule = new ActivityTestRule<>(ProductListActivity.class);
@Test
public void ensureListViewIsPresent() throws Exception {
ProductListActivity activity = rule.getActivity();
View viewByIdw = activity.findViewById(R.id.productListView);
assertThat(viewByIdw,notNullValue());
assertThat(viewByIdw, instanceOf(RecyclerView.class));
RecyclerView productRecyclerView = (RecyclerView) viewByIdw;
RecyclerView.Adapter adapter = productRecyclerView.getAdapter();
assertThat(adapter, instanceOf(ProductAdapter.class));
}
}
jestem w obliczu problemu, by sprawdzić zasilacz. Chociaż productRecyclerView przechodzi not null test i wystąpienie RecyclerView, jest następujący błąd w ostatnim wierszu:
java.lang.AssertionError:
Expected: an instance of com.kaushik.myredmart.adapter.ProductAdapter
but: null
at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
at org.junit.Assert.assertThat(Assert.java:956)
at org.junit.Assert.assertThat(Assert.java:923)
at com.kaushik.myredmart.ui.ProductListActivityTest.ensureListViewIsPresent(ProductListActivityTest.java:45)
Jaki jest problem w kodzie?
Czy możesz opublikować swój kod 'ProductListActivity'? –