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package com.mapbox.mapboxsdk.geometry;
import com.mapbox.mapboxsdk.exceptions.InvalidLatLngBoundsException;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
public class LatLngBoundsTest {
private static final double DELTA = 1e-15;
private LatLngBounds mLatLngBounds;
private static final LatLng LAT_LNG_NULL_ISLAND = new LatLng(0, 0);
private static final LatLng LAT_LNG_NOT_NULL_ISLAND = new LatLng(2, 2);
@Before
public void beforeTest() {
mLatLngBounds = new LatLngBounds.Builder()
.include(LAT_LNG_NULL_ISLAND)
.include(LAT_LNG_NOT_NULL_ISLAND)
.build();
}
@Test
public void testSanity() {
LatLngBounds.Builder latLngBoundsBuilder = new LatLngBounds.Builder();
latLngBoundsBuilder.include(LAT_LNG_NULL_ISLAND).include(LAT_LNG_NOT_NULL_ISLAND);
assertNotNull("latLng should not be null", latLngBoundsBuilder.build());
}
@Test(expected = InvalidLatLngBoundsException.class)
public void testNoLatLngs() {
new LatLngBounds.Builder().build();
}
@Test(expected = InvalidLatLngBoundsException.class)
public void testOneLatLngs() {
new LatLngBounds.Builder().include(LAT_LNG_NULL_ISLAND).build();
}
@Test
public void testLatitiudeSpan() {
assertEquals("Span should be the same", 2, mLatLngBounds.getLatitudeSpan(), DELTA);
}
@Test
public void testLongitudeSpan() {
assertEquals("Span should be the same", 2, mLatLngBounds.getLongitudeSpan(), DELTA);
}
@Test
public void testCoordinateSpan() {
LatLngSpan latLngSpan = mLatLngBounds.getSpan();
assertEquals("LatLngSpan should be the same", new LatLngSpan(2, 2), latLngSpan);
}
@Test
public void testCenter() {
LatLng center = mLatLngBounds.getCenter();
assertEquals("Center should match", new LatLng(1, 1), center);
}
@Test
public void testEmptySpan() {
mLatLngBounds = new LatLngBounds.Builder()
.include(LAT_LNG_NOT_NULL_ISLAND)
.include(LAT_LNG_NOT_NULL_ISLAND)
.build();
assertTrue("Should be empty", mLatLngBounds.isEmptySpan());
}
@Test
public void testNotEmptySpan() {
mLatLngBounds = new LatLngBounds.Builder()
.include(LAT_LNG_NOT_NULL_ISLAND)
.include(LAT_LNG_NULL_ISLAND)
.build();
assertFalse("Should not be empty", mLatLngBounds.isEmptySpan());
}
@Test
public void testIncluding() {
assertTrue("LatLng should be included", mLatLngBounds.including(new LatLng(1, 1)));
}
@Test
public void testNoIncluding() {
assertFalse("LatLng should not be included", mLatLngBounds.including(new LatLng(3, 1)));
}
@Test
public void testHashCode() {
assertEquals(2147483647, mLatLngBounds.hashCode(), -1946419200);
}
@Test
public void testEquality() {
LatLngBounds latLngBounds = new LatLngBounds.Builder()
.include(LAT_LNG_NULL_ISLAND)
.include(LAT_LNG_NOT_NULL_ISLAND)
.build();
assertEquals("equality should match", mLatLngBounds, latLngBounds);
}
@Test
public void testToString() {
assertEquals(mLatLngBounds.toString(), "N:2.0; E:2.0; S:0.0; W:0.0");
}
@Test
public void testIntersect() {
LatLngBounds latLngBounds = new LatLngBounds.Builder()
.include(new LatLng(1, 1))
.include(LAT_LNG_NULL_ISLAND)
.build();
assertEquals("intersect should match", latLngBounds, latLngBounds.intersect(mLatLngBounds.getLatNorth(), mLatLngBounds.getLonEast(), mLatLngBounds.getLatSouth(), mLatLngBounds.getLonWest()));
}
@Test
public void testNoIntersect() {
LatLngBounds latLngBounds = new LatLngBounds.Builder()
.include(new LatLng(10, 10))
.include(new LatLng(9, 8))
.build();
assertNull(latLngBounds.intersect(mLatLngBounds));
}
@Test
public void testInnerUnion() {
LatLngBounds latLngBounds = new LatLngBounds.Builder()
.include(new LatLng(1, 1))
.include(LAT_LNG_NULL_ISLAND)
.build();
assertEquals("union should match", latLngBounds, latLngBounds.intersect(mLatLngBounds));
}
@Test
public void testOuterUnion() {
LatLngBounds latLngBounds = new LatLngBounds.Builder()
.include(new LatLng(10, 10))
.include(new LatLng(9, 8))
.build();
assertEquals("outer union should match",
latLngBounds.union(mLatLngBounds),
new LatLngBounds.Builder()
.include(new LatLng(10, 10))
.include(LAT_LNG_NULL_ISLAND)
.build());
}
}
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