Example usage for org.jfree.data.function PolynomialFunction2D PolynomialFunction2D

Usage

From source file:org.jfree.data.function.PolynomialFunction2DTest.java

/**
 * Some tests for the constructor./*from w w w  .  j av  a  2s . c  om*/
 */
@Test
public void testConstructor() {
    PolynomialFunction2D f = new PolynomialFunction2D(new double[] { 1.0, 2.0 });
    assertTrue(Arrays.equals(new double[] { 1.0, 2.0 }, f.getCoefficients()));

    boolean pass = false;
    try {
        f = new PolynomialFunction2D(null);
    } catch (IllegalArgumentException e) {
        pass = true;
    }
    assertTrue(pass);
}

From source file:org.jfree.data.function.PolynomialFunction2DTest.java

/**
 * Some checks for the getCoefficients() method.
 *///from   w  w w.  j  a v  a2 s  .c  o  m
@Test
public void testGetCoefficients() {
    PolynomialFunction2D f = new PolynomialFunction2D(new double[] { 1.0, 2.0 });
    double[] c = f.getCoefficients();
    assertTrue(Arrays.equals(new double[] { 1.0, 2.0 }, c));

    // make sure that modifying the returned array doesn't change the
    // function
    c[0] = 99.9;
    assertTrue(Arrays.equals(new double[] { 1.0, 2.0 }, f.getCoefficients()));
}

From source file:org.jfree.data.function.PolynomialFunction2DTest.java

/**
 * Some checks for the getOrder() method.
 *///from w  w w. j ava  2  s.  c  om
@Test
public void testGetOrder() {
    PolynomialFunction2D f = new PolynomialFunction2D(new double[] { 1.0, 2.0 });
    assertEquals(1, f.getOrder());
}

From source file:org.jfree.data.function.PolynomialFunction2DTest.java

/**
 * For datasets, the equals() method just checks keys and values.
 *//*from  w w  w .j  a v  a2 s .  c  o m*/
@Test
public void testEquals() {
    PolynomialFunction2D f1 = new PolynomialFunction2D(new double[] { 1.0, 2.0 });
    PolynomialFunction2D f2 = new PolynomialFunction2D(new double[] { 1.0, 2.0 });
    assertTrue(f1.equals(f2));
    f1 = new PolynomialFunction2D(new double[] { 2.0, 3.0 });
    assertFalse(f1.equals(f2));
    f2 = new PolynomialFunction2D(new double[] { 2.0, 3.0 });
    assertTrue(f1.equals(f2));
}

From source file:org.jfree.data.function.PolynomialFunction2DTest.java

/**
 * Serialize an instance, restore it, and check for equality.
 *//*  w w w. ja va2s .c  o m*/
@Test
public void testSerialization() {
    PolynomialFunction2D f1 = new PolynomialFunction2D(new double[] { 1.0, 2.0 });
    PolynomialFunction2D f2 = (PolynomialFunction2D) TestUtilities.serialised(f1);
    assertEquals(f1, f2);
}

From source file:org.jfree.data.function.PolynomialFunction2DTest.java

/**
 * Objects that are equal should have the same hash code otherwise FindBugs
 * will tell on us.../*from  w w  w  . j a v a2  s. c  om*/
 */
@Test
public void testHashCode() {
    PolynomialFunction2D f1 = new PolynomialFunction2D(new double[] { 1.0, 2.0 });
    PolynomialFunction2D f2 = new PolynomialFunction2D(new double[] { 1.0, 2.0 });
    assertEquals(f1.hashCode(), f2.hashCode());

}