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package com.ugsbo.matrixcalc; |
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import static org.junit.Assert.assertArrayEquals; |
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import static org.junit.Assert.assertFalse; |
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import static org.junit.Assert.assertTrue; |
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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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} |