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50 lines
1.7 KiB
50 lines
1.7 KiB
package com.ugsbo.matrixcalc;
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import static org.junit.Assert.assertArrayEquals;
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import org.junit.Test;
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/**
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* Tests the funktionality to Transpose a Matix
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*/
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public class MatrixTransposeTest {
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@Test
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public void TransformQuadraticMatrixAResultsInQuadraticMatrixC() {
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MatrixCalcMath math = new MatrixCalcMath();
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// A(2,2) => C(2,2)
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double[][] matrixA = { { 1.0, 2.0 }, { 3.0, 4.0 } };
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double[][] matrixC = { { 1.0, 3.0 }, { 2.0, 4.0 } };
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double[][] result = math.matrixTransponation(matrixA);
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assertArrayEquals("The first row is not correct", matrixC[0], result[0], 0.1);
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assertArrayEquals("The seound row is not correct", matrixC[1], result[1], 0.1);
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}
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@Test
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public void Transform2by3MatrixAResultsIn3by2MatrixC() {
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MatrixCalcMath math = new MatrixCalcMath();
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// A(2,3) => C(3,2)
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double[][] matrixA = { { 1.0, 2.0, 3.0 }, { 4.0, 5.0, 6.0 } };
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double[][] matrixC = { { 1.0, 4.0 }, { 2.0, 5.0 }, { 3.0, 6.0 } };
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double[][] result = math.matrixTransponation(matrixA);
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assertArrayEquals("The first row is not correct", matrixC[0], result[0], 0.1);
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assertArrayEquals("The seound row is not correct", matrixC[1], result[1], 0.1);
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}
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@Test
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public void Transform1by3MatrixAResultsIn3by1MatrixC() {
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MatrixCalcMath math = new MatrixCalcMath();
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// A(1,3) => C(1,3)
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double[][] matrixA = { { 1.0, 2.0, 3.0 } };
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double[][] matrixC = { { 1.0 }, { 2.0 }, { 3.0 } };
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double[][] result = math.matrixTransponation(matrixA);
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assertArrayEquals("The first row is not correct", matrixC[0], result[0], 0.1);
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assertArrayEquals("The seound row is not correct", matrixC[1], result[1], 0.1);
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}
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}
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