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Add unit test for GridItemDecoration

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Signed-off-by: Stefan Niedermann <info@niedermann.it>
This commit is contained in:
Stefan Niedermann 2021-05-19 13:50:03 +02:00
parent 8ac8fe6249
commit 07534d7bc6
2 changed files with 106 additions and 0 deletions
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3
app/src/main/java/it/niedermann/owncloud/notes/main/items/grid/GridItemDecoration.java
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@ -20,6 +20,9 @@ public class GridItemDecoration extends SectionItemDecoration {
public GridItemDecoration(@NonNull ItemAdapter adapter, int spanCount, @Px int sectionLeft, @Px int sectionTop, @Px int sectionRight, @Px int sectionBottom, @Px int gutter) {
super(adapter, sectionLeft, sectionTop, sectionRight, sectionBottom);
if(spanCount < 1) {
throw new IllegalArgumentException("Requires at least one span");
}
this.spanCount = spanCount;
this.adapter = adapter;
this.gutter = gutter;

103
app/src/test/java/it/niedermann/owncloud/notes/main/items/grid/GridItemDecorationTest.java Normal file
View file

@ -0,0 +1,103 @@
package it.niedermann.owncloud.notes.main.items.grid;
import android.graphics.Rect;
import android.os.Build;
import android.view.View;
import androidx.recyclerview.widget.RecyclerView;
import androidx.recyclerview.widget.StaggeredGridLayoutManager;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.annotation.Config;
import java.util.Arrays;
import it.niedermann.owncloud.notes.main.items.ItemAdapter;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThrows;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.reset;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
@RunWith(RobolectricTestRunner.class)
@Config(sdk = {Build.VERSION_CODES.P})
public class GridItemDecorationTest {
private final ItemAdapter itemAdapter = mock(ItemAdapter.class);
private final RecyclerView recyclerView = mock(RecyclerView.class);
private final View view = mock(View.class);
private final StaggeredGridLayoutManager.LayoutParams layoutParams = mock(StaggeredGridLayoutManager.LayoutParams.class);
@Test
public void getItemOffsets() {
when(view.getLayoutParams()).thenReturn(layoutParams);
when(itemAdapter.getFirstPositionOfViewType(anyInt())).thenReturn(0);
when(itemAdapter.getItemViewType(anyInt())).then((arg) -> Arrays.asList(0, 4, 9).contains(arg.getArgument(0, Integer.class))
? ItemAdapter.TYPE_SECTION
: ItemAdapter.TYPE_NOTE_ONLY_TITLE);
assertThrows("Requires at least one column", IllegalArgumentException.class, () -> new GridItemDecoration(itemAdapter, 0, 5, 5, 5, 5, 5));
final GridItemDecoration oneColumn = new GridItemDecoration(itemAdapter, 1, 5, 5, 5, 5, 5);
testAssertion(oneColumn, 0, 0, true, 5, 5, 5, 5);
testAssertion(oneColumn, 0, 1, false, 0, 5, 5, 5);
testAssertion(oneColumn, 0, 2, false, 0, 5, 5, 5);
testAssertion(oneColumn, 0, 3, false, 0, 5, 5, 5);
testAssertion(oneColumn, 0, 4, true, 5, 5, 5, 5);
testAssertion(oneColumn, 0, 5, false, 0, 5, 5, 5);
testAssertion(oneColumn, 0, 6, false, 0, 5, 5, 5);
testAssertion(oneColumn, 0, 7, false, 0, 5, 5, 5);
testAssertion(oneColumn, 0, 8, false, 0, 5, 5, 5);
testAssertion(oneColumn, 0, 9, true, 5, 5, 5, 5);
final GridItemDecoration twoColumns = new GridItemDecoration(itemAdapter, 2, 5, 5, 5, 5, 5);
testAssertion(twoColumns, 0, 0, true, 5, 5, 5, 5);
testAssertion(twoColumns, 0, 1, false, 0, 5, 5, 5);
testAssertion(twoColumns, 1, 2, false, 0, 0, 5, 5);
testAssertion(twoColumns, 0, 3, false, 0, 5, 5, 5);
testAssertion(twoColumns, 0, 4, true, 5, 5, 5, 5);
testAssertion(twoColumns, 0, 5, false, 0, 5, 5, 5);
testAssertion(twoColumns, 1, 6, false, 0, 0, 5, 5);
testAssertion(twoColumns, 0, 7, false, 0, 5, 5, 5);
testAssertion(twoColumns, 0, 8, false, 0, 5, 5, 5);
testAssertion(twoColumns, 0, 9, true, 5, 5, 5, 5);
final GridItemDecoration threeColumns = new GridItemDecoration(itemAdapter, 3, 5, 5, 5, 5, 5);
testAssertion(threeColumns, 0, 0, true, 5, 5, 5, 5);
testAssertion(threeColumns, 0, 1, false, 0, 5, 5, 5);
testAssertion(threeColumns, 1, 2, false, 0, 0, 5, 5);
testAssertion(threeColumns, 2, 3, false, 0, 0, 5, 5);
testAssertion(threeColumns, 0, 4, true, 5, 5, 5, 5);
testAssertion(threeColumns, 0, 5, false, 0, 5, 5, 5);
testAssertion(threeColumns, 1, 6, false, 0, 0, 5, 5);
testAssertion(threeColumns, 2, 7, false, 0, 0, 5, 5);
testAssertion(threeColumns, 0, 8, false, 0, 5, 5, 5);
testAssertion(threeColumns, 0, 9, true, 5, 5, 5, 5);
}
@SuppressWarnings("SameParameterValue")
private void testAssertion(GridItemDecoration gid, int spanIndex, int position, boolean fullSpan, int top, int left, int right, int bottom) {
when(layoutParams.getSpanIndex()).thenReturn(spanIndex);
when(recyclerView.getChildAdapterPosition(any())).thenReturn(position);
final Rect result = new Rect();
gid.getItemOffsets(result, view, recyclerView, mock(RecyclerView.State.class));
if (fullSpan) {
verify(layoutParams).setFullSpan(true);
}
reset(layoutParams);
assertEquals(top, result.top);
assertEquals(left, result.left);
assertEquals(right, result.right);
assertEquals(bottom, result.bottom);
}
}