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MaterialDividerItemDecorationTest.java
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MaterialDividerItemDecorationTest.java
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/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.android.material.divider;
import com.google.android.material.R;
import static com.google.common.truth.Truth.assertThat;
import android.content.Context;
import android.graphics.Color;
import android.graphics.Rect;
import androidx.recyclerview.widget.RecyclerView;
import android.widget.LinearLayout;
import androidx.test.core.app.ApplicationProvider;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.robolectric.RobolectricTestRunner;
/** Tests for {@link MaterialDividerItemDecoration}. */
@RunWith(RobolectricTestRunner.class)
public final class MaterialDividerItemDecorationTest {
@Rule
public final ExpectedException thrown = ExpectedException.none();
private static final int DIVIDER_THICKNESS = 5;
private final Context context = ApplicationProvider.getApplicationContext();
@Mock private RecyclerView.State state;
@Mock private RecyclerView recyclerView;
private Rect rect;
private MaterialDividerItemDecoration divider;
@Before
public void themeApplicationContext() {
context.setTheme(R.style.Theme_MaterialComponents_Light_NoActionBar_Bridge);
rect = new Rect();
divider = new MaterialDividerItemDecoration(context, LinearLayout.VERTICAL);
divider.setDividerThickness(DIVIDER_THICKNESS);
}
@Test
public void setOrientation_validInput_succeeds() {
divider.setOrientation(LinearLayout.VERTICAL);
assertThat(divider.getOrientation()).isEqualTo(LinearLayout.VERTICAL);
}
@Test
public void setOrientation_invalidInput_throws() {
thrown.expect(IllegalArgumentException.class);
divider.setOrientation(3);
}
@Test
public void setDividerThickness_succeeds() {
divider.setDividerThickness(10);
assertThat(divider.getDividerThickness()).isEqualTo(10);
}
@Test
public void setDividerThicknessResource_succeeds() {
divider.setDividerThicknessResource(context, R.dimen.test_dimen);
assertThat(divider.getDividerThickness()).isEqualTo(2);
}
@Test
public void setDividerColor_succeeds() {
divider.setDividerColor(Color.RED);
assertThat(divider.getDividerColor()).isEqualTo(Color.RED);
}
@Test
public void setDividerColorResource_succeeds() {
divider.setDividerColorResource(context, R.color.test_color);
assertThat(divider.getDividerColor()).isEqualTo(Color.BLACK);
}
@Test
public void setDividerInsetStart_succeeds() {
divider.setDividerInsetStart(10);
assertThat(divider.getDividerInsetStart()).isEqualTo(10);
}
@Test
public void setDividerInsetStartResource_succeeds() {
divider.setDividerInsetStartResource(context, R.dimen.test_dimen);
assertThat(divider.getDividerInsetStart()).isEqualTo(2);
}
@Test
public void setDividerInsetEnd_succeeds() {
divider.setDividerInsetEnd(10);
assertThat(divider.getDividerInsetEnd()).isEqualTo(10);
}
@Test
public void setDividerInsetEndResource_succeeds() {
divider.setDividerInsetEndResource(context, R.dimen.test_dimen);
assertThat(divider.getDividerInsetEnd()).isEqualTo(2);
}
@Test
public void isLastItemDecorated_isTrueByDefault() {
assertThat(divider.isLastItemDecorated()).isTrue();
}
@Test
public void setLastItemNotDecorated_succeeds() {
divider.setLastItemDecorated(false);
assertThat(divider.isLastItemDecorated()).isFalse();
}
@Test
public void getItemOffsets_verticalOrientation_returnsCorrectRect() {
divider.getItemOffsets(rect, /* view= */ null, recyclerView, state);
assertThat(rect).isEqualTo(new Rect(0, 0, 0, DIVIDER_THICKNESS));
}
@Test
public void getItemOffsets_horizontalOrientation_returnsCorrectRect() {
divider.setOrientation(LinearLayout.HORIZONTAL);
divider.getItemOffsets(rect, /* view= */ null, recyclerView, state);
assertThat(rect).isEqualTo(new Rect(0, 0, DIVIDER_THICKNESS, 0));
}
}