@Test(expected = IllegalArgumentException.class)
public void testMultiplyAbnormal() {
double[] arr1 = new double[] {1, 2, 3};
double[] arr2 = new double[] {4, 5};
DoubleVector vec1 = new DenseDoubleVector(arr1);
DoubleVector vec2 = new DenseDoubleVector(arr2);
vec1.multiply(vec2);
}
@Test(expected = IllegalArgumentException.class)
public void testVectorMultiplyMatrixAbnormal() {
DoubleVector vec = new DenseDoubleVector(new double[] {1, 2, 3});
DoubleMatrix mat =
new DenseDoubleMatrix(
new double[][] {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}});
vec.multiply(mat);
}
@Test(expected = IllegalArgumentException.class)
public void testMultiplyWithException() {
double[] vals1 = {1, 2, 3, 4, 5, 6, 7, 8};
double[] vals2 = {8, 7, 6, 5, 4, 3, 2, 1, 0};
DoubleVector vec1 = new DenseDoubleVector(vals1);
DoubleVector vec2 = new DenseDoubleVector(vals2);
vec1.multiply(vec2);
}
@Test
public void testMultiplyNormal() {
double[] arr1 = new double[] {1, 2, 3};
double[] arr2 = new double[] {4, 5, 6};
DoubleVector vec1 = new DenseDoubleVector(arr1);
DoubleVector vec2 = new DenseDoubleVector(arr2);
double[] arrExp = new double[] {4, 10, 18};
assertArrayEquals(arrExp, vec1.multiply(vec2).toArray(), 0.000001);
}
@Test
public void testVectorMultiplyMatrix() {
DoubleVector vec = new DenseDoubleVector(new double[] {1, 2, 3});
DoubleMatrix mat =
new DenseDoubleMatrix(new double[][] {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}});
double[] expectedRes = new double[] {38, 44, 50, 56};
assertArrayEquals(expectedRes, vec.multiply(mat).toArray(), 0.000001);
}