source: josm/trunk/test/unit/org/openstreetmap/josm/data/imagery/ShapeTest.java@ 18381

// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.data.imagery;

import static org.junit.jupiter.api.Assertions.assertAll;
import static org.junit.jupiter.api.Assertions.assertEquals;

import java.util.Arrays;

import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;

/**
 * Unit tests for class {@link Shape}.
 */
class ShapeTest {

    /**
     * Tests string conversion
     */
    @Test
    void test() {
        Shape shape = new Shape();
        shape.addPoint("47.1", "11.1");
        shape.addPoint("47.2", "11.2");
        shape.addPoint("47.3", "11.3");
        String shapeString = "47.1 11.1 47.2 11.2 47.3 11.3";
        Shape fromString = new Shape(shapeString, " ");
        assertEquals(shape, fromString);
        assertEquals(shapeString, shape.encodeAsString(" "));
        assertEquals("47.1//11.1//47.2//11.2//47.3//11.3", shape.encodeAsString("//"));
        assertEquals("47.1,11.1,47.2,11.2,47.3,11.3;47.1,11.1,47.2,11.2,47.3,11.3", Shape.encodeAsString(Arrays.asList(shape, shape)));
    }

    /**
     * Check double edge cases
     * @param coordinate the coordinate to check
     */
    @ParameterizedTest
    @ValueSource(doubles = {
            // The double representation of 0.2575799 * 1e7 is 2575798.9999999995. Directly casting to int will round down.
            0.2575799,
            // Check that 2575798.0000000005 is rounded down
            0.2575798
    })
    void testDoubleEdgeCases(final double coordinate) {
        final Shape shape = new Shape();
        shape.addPoint(Double.toString(1), Double.toString(coordinate));
        shape.addPoint(Double.toString(coordinate), Double.toString(1));
        shape.addPoint(Double.toString(coordinate), Double.toString(coordinate));
        assertAll("Coordinates are not properly rounded on entry",
                () -> assertEquals(coordinate, shape.getPoints().get(0).getLon()),
                () -> assertEquals(coordinate, shape.getPoints().get(1).getLat()));
    }
}