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MATH-795: splitted tests for 

- RealVector.setEntry(int, double),
  - RealVector.addToEntry(int, double).


git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1347401 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sebastien Brisard 2012-06-07 05:45:44 +00:00
parent 00bc945db4
commit fcfe0a0644
1 changed files with 91 additions and 13 deletions
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104
src/test/java/org/apache/commons/math3/linear/RealVectorAbstractTest.java
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@ -52,6 +52,7 @@ import org.apache.commons.math3.exception.MathIllegalArgumentException;
import org.apache.commons.math3.exception.NumberIsTooSmallException;
import org.apache.commons.math3.exception.OutOfRangeException;
import org.apache.commons.math3.util.FastMath;
import org.apache.commons.math3.util.MathArrays;
import org.junit.Test;
@ -164,6 +165,96 @@ public abstract class RealVectorAbstractTest {
create(data1).getEntry(data1.length);
}
@Test
public void testSetEntry() {
final double[] expected = MathArrays.copyOf(data1);
final RealVector actual = create(data1);
/*
* Try setting to any value.
*/
for (int i = 0; i < data1.length; i++) {
final double oldValue = data1[i];
final double newValue = oldValue + 1d;
expected[i] = newValue;
actual.setEntry(i, newValue);
TestUtils.assertEquals("while setting entry #" + i, expected,
actual, 0d);
expected[i] = oldValue;
actual.setEntry(i, oldValue);
}
/*
* Try setting to the preferred value.
*/
final double x = getPreferredEntryValue();
for (int i = 0; i < data1.length; i++) {
final double oldValue = data1[i];
final double newValue = x;
expected[i] = newValue;
actual.setEntry(i, newValue);
TestUtils.assertEquals("while setting entry #" + i, expected,
actual, 0d);
expected[i] = oldValue;
actual.setEntry(i, oldValue);
}
}
@Test(expected=OutOfRangeException.class)
public void testSetEntryInvalidIndex1() {
create(data1).setEntry(-1, getPreferredEntryValue());
}
@Test(expected=OutOfRangeException.class)
public void testSetEntryInvalidIndex2() {
create(data1).setEntry(data1.length, getPreferredEntryValue());
}
@Test
public void testAddToEntry() {
final double[] expected = MathArrays.copyOf(data1);
final RealVector actual = create(data1);
/*
* Try adding any value.
*/
double increment = 1d;
for (int i = 0; i < data1.length; i++) {
final double oldValue = data1[i];
expected[i] += increment;
actual.addToEntry(i, increment);
TestUtils.assertEquals("while incrementing entry #" + i, expected,
actual, 0d);
expected[i] = oldValue;
actual.setEntry(i, oldValue);
}
/*
* Try incrementing so that result is equal to preferred value.
*/
final double x = getPreferredEntryValue();
for (int i = 0; i < data1.length; i++) {
final double oldValue = data1[i];
increment = x - oldValue;
expected[i] = x;
actual.addToEntry(i, increment);
TestUtils.assertEquals("while incrementing entry #" + i, expected,
actual, 0d);
expected[i] = oldValue;
actual.setEntry(i, oldValue);
}
}
@Test(expected=OutOfRangeException.class)
public void testAddToEntryInvalidIndex1() {
create(data1).addToEntry(-1, getPreferredEntryValue());
}
@Test(expected=OutOfRangeException.class)
public void testAddToEntryInvalidIndex2() {
create(data1).addToEntry(data1.length, getPreferredEntryValue());
}
private void doTestAppendVector(final String message, final RealVector v1,
final RealVector v2, final double delta) {
@ -841,19 +932,6 @@ public abstract class RealVectorAbstractTest {
Assert.assertEquals(v,TestUtils.serializeAndRecover(v));
}
@Test
public void testAddToEntry() {
final double[] v = new double[] { 1, 2, 3 };
final RealVector x = create(v);
final double inc = 7;
for (int i = 0; i < x.getDimension(); i++) {
x.addToEntry(i, inc);
}
for (int i = 0; i < x.getDimension(); i++) {
Assert.assertEquals(v[i] + inc, x.getEntry(i), 0);
}
}
@Test
public void testMinMax() {
final RealVector v1 = create(new double[] {0, -6, 4, 12, 7});