GridTest.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.kie.workbench.common.stunner.lienzo.grid;

import java.util.Iterator;
import java.util.NoSuchElementException;

import org.junit.Test;
import org.kie.workbench.common.stunner.lienzo.grid.Grid.Point;

import static org.junit.Assert.*;

public class GridTest {

    private final static int PADDING = 10;
    private final static int ICON_SIZE = 20;
    private final static int ROWS_COUNT = 30;
    private final static int COLUMNS_COUNT = 40;

    Grid grid = new Grid(PADDING,
                         ICON_SIZE,
                         ROWS_COUNT,
                         COLUMNS_COUNT);

    @Test
    public void testFindSimplePosition() {
        Point p = grid.findPosition(4,
                                    5);
        assertEquals(160,
                     p.getX());
        assertEquals(130,
                     p.getY());
    }

    @Test(expected = IllegalArgumentException.class)
    public void testZeroColumnsCountGrid() {
        new Grid(1,
                 1,
                 2,
                 0);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testZeroRowsCountGrid() {
        new Grid(1,
                 1,
                 0,
                 2);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testNegativePadding() {
        new Grid(-1,
                 1,
                 3,
                 2);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testNegativeIconSize() {
        new Grid(1,
                 -1,
                 3,
                 2);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testFindSimplePositionRowIsTooBig() {
        grid.findPosition(10000,
                          5);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testFindSimplePositionColIsTooBig() {
        grid.findPosition(5,
                          10000);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testFindSimplePositionNegativeRow() {
        grid.findPosition(-1,
                          5);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testFindSimplePositionNegativeCol() {
        grid.findPosition(5,
                          -1);
    }

    @Test
    public void testGetWidth() {
        assertEquals(1210,
                     grid.getWidth());
    }

    @Test
    public void testGetHeight() {
        assertEquals(910,
                     grid.getHeight());
    }

    @Test
    public void testSize() {
        assertEquals(1200,
                     grid.size());
    }

    @Test
    public void testIterator() {
        Iterator iterator = grid.iterator();
        int cellCount = 0;
        while (iterator.hasNext()) {
            iterator.next();
            cellCount++;
        }
        assertEquals(grid.size(),
                     cellCount);
    }

    @Test(expected = NoSuchElementException.class)
    public void testIteratorOverflow() {
        Iterator iterator = grid.iterator();
        while (iterator.hasNext()) {
            iterator.next();
        }
        iterator.next();
    }

    @Test(expected = UnsupportedOperationException.class)
    public void testIteratorRemoveNotSupported() {
        grid.iterator().remove();
    }
}