java-common-algorithms/src/test/java/dataStructures/matrix/MatrixTest.java at master · meugenom/java-common-algorithms · GitHub

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packagedataStructures.matrix;

importstaticorg.junit.jupiter.api.Assertions.assertEquals;
importstaticorg.junit.jupiter.api.Assertions.assertThrows;
importstaticorg.junit.jupiter.api.Assertions.fail;

importorg.junit.jupiter.api.DisplayName;
importorg.junit.jupiter.api.Test;


publicclassMatrixTest {

@Test
@DisplayName("rotate matrix")
publicvoidtestRotate() {

Matrixa = newMatrix();
int[][] arrayA = newint[][] { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };
a.set(arrayA);
a.rotate();
Stringexpected = a.toString();

Matrixb = newMatrix();
int[][] arrayB = newint[][] { { 7, 4, 1 }, { 8, 5, 2 }, { 9, 6, 3 } };
b.set(arrayB);
Stringactual = b.toString();

assertEquals(expected, actual, "Rotation matrix should work");
System.out.println("Test - Matrix : rotate() - passed ok");
	}

@Test
@DisplayName("transpose matrix")
publicvoidtestTranspose() {

Matrixa = newMatrix();
int[][] arrayA = newint[][] { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 } };
a.set(arrayA);
a.transpose();
Stringexpected = a.toString();

Matrixb = newMatrix();
int[][] arrayB = newint[][] { { 1, 4, 7 }, { 2, 5, 8 }, { 3, 6, 9 } };
b.set(arrayB);
Stringactual = b.toString();

assertEquals(expected, actual, "Transpose matrix should work");
System.out.println("Test - Matrix : transpose() - passed ok");
	}

@Test
@DisplayName("reflect matrix")
publicvoidtestReflect() {

Matrixa = newMatrix();
int[][] arrayA = newint[][] { { 1, 4, 7 }, { 2, 5, 8 }, { 3, 6, 9 } };
a.set(arrayA);
a.reflect();
Stringexpected = a.toString();

Matrixb = newMatrix();
int[][] arrayB = newint[][] { { 7, 4, 1 }, { 8, 5, 2 }, { 9, 6, 3 } };
b.set(arrayB);
Stringactual = b.toString();

assertEquals(expected, actual, "Reflect matrix should work");
System.out.println("Test - Matrix : reflect() - passed ok");
	}

@Test
publicvoidtestSet_IS_NULL() {

int[][] expectedArr = null;
Matrixa = newMatrix();
assertThrows(IllegalArgumentException.class, () -> {
a.set(expectedArr);
fail("Input null matrix");
 });
System.out.println("Test - Matrix : added NULL array - passed ok");
	}
}