/*
* Copyright (c) 1998 - 2011. University Corporation for Atmospheric Research/Unidata
* Portions of this software were developed by the Unidata Program at the
* University Corporation for Atmospheric Research.
*
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* any fee or cost, to use, copy, modify, alter, enhance and distribute
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*/
package ucar.ma2;
import org.junit.Test;
/**
* test Range class
*
* @author John
* @since 11/2/11
*/
public class TestRange {
@Test
public void testStride() throws InvalidRangeException {
int nx = 1237;
Range r = new Range(0,nx-1,9);
System.out.printf("%s%n",r);
System.out.printf("%d %d %d %d%n",r.first(),r.last(),r.stride(),r.length());
assert r.first() == 0;
assert r.last() == 1233;
assert r.stride() == 9;
assert r.length() == 138;
Section s = new Section( r, r);
Section.Iterator iter = s.getIterator(new int[] {nx, nx});
int[] iterResult = new int[2];
int count = 0;
for (int y = r.first(); y <= r.last(); y += r.stride()) {
for (int x = r.first(); x <= r.last(); x += r.stride()) {
assert iter.hasNext();
int iterN = iter.next(iterResult);
assert iterResult[0] == y;
assert iterResult[1] == x;
assert iterN == y * nx + x;
count++;
}
}
assert count == 138 * 138;
}
}