com.codeaffine.eclipse.ui.swt.theme.ScrollbarPreferenceTest.java Source code

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Here is the source code for com.codeaffine.eclipse.ui.swt.theme.ScrollbarPreferenceTest.java

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/**
 * Copyright (c) 2014 - 2017 Frank Appel
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Frank Appel - initial API and implementation
 */
package com.codeaffine.eclipse.ui.swt.theme;

import static com.codeaffine.eclipse.swt.widget.scrollable.Demeanor.FIXED_SCROLL_BAR_BREADTH;
import static com.codeaffine.eclipse.ui.swt.theme.AttributeSetter.DEMEANOR_PREFERENCE_SETTER;
import static com.codeaffine.eclipse.ui.swt.theme.ScrollableAdapterContribution.ADAPTER_DEMEANOR;
import static com.codeaffine.eclipse.ui.swt.theme.ScrollableAdapterContribution.DEMEANOR_EXPAND_ON_MOUSE_OVER;
import static com.codeaffine.eclipse.ui.swt.theme.ScrollableAdapterContribution.DEMEANOR_FIXED_WIDTH;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import org.eclipse.jface.preference.IPreferenceStore;
import org.junit.Before;
import org.junit.Test;

import com.codeaffine.eclipse.swt.widget.scrollable.ScrollbarStyle;

public class ScrollbarPreferenceTest {

    private ScrollbarPreference preference;
    private IPreferenceStore store;

    @Before
    public void setUp() {
        store = stubPreferenceStore();
        preference = new ScrollbarPreference(ADAPTER_DEMEANOR, () -> store);
    }

    @Test
    public void apply() {
        ScrollbarStyle style = mock(ScrollbarStyle.class);
        when(store.getString(ADAPTER_DEMEANOR)).thenReturn(DEMEANOR_FIXED_WIDTH);

        preference.apply(style, DEMEANOR_PREFERENCE_SETTER);

        verify(style).setDemeanor(FIXED_SCROLL_BAR_BREADTH);
    }

    @Test
    public void applyIfNotCustomized() {
        ScrollbarStyle style = mock(ScrollbarStyle.class);
        when(store.getString(ADAPTER_DEMEANOR)).thenReturn(DEMEANOR_EXPAND_ON_MOUSE_OVER);

        preference.apply(style, DEMEANOR_PREFERENCE_SETTER);

        verify(style, never()).setDemeanor(FIXED_SCROLL_BAR_BREADTH);
    }

    @Test
    public void isCustomized() {
        when(store.getString(ADAPTER_DEMEANOR)).thenReturn(DEMEANOR_FIXED_WIDTH);

        boolean actual = preference.isCustomized();

        assertThat(actual).isTrue();
    }

    @Test
    public void getValue() {
        when(store.getString(ADAPTER_DEMEANOR)).thenReturn(DEMEANOR_FIXED_WIDTH);

        String actual = preference.getValue();

        assertThat(actual).isSameAs(DEMEANOR_FIXED_WIDTH);
    }

    private static IPreferenceStore stubPreferenceStore() {
        IPreferenceStore result = mock(IPreferenceStore.class);
        when(result.getDefaultString(ADAPTER_DEMEANOR)).thenReturn(DEMEANOR_EXPAND_ON_MOUSE_OVER);
        return result;
    }
}