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test: DeterminantOfMatrix (#5376)

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Alex Klymenko
2024-08-24 10:38:16 +02:00
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parent aefc8fd4b8
commit 84fb717509
2 changed files with 57 additions and 21 deletions
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src/test/java/com/thealgorithms/maths/DeterminantOfMatrixTest.java Normal file
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package com.thealgorithms.maths;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.Test;
public class DeterminantOfMatrixTest {
@Test
public void testDeterminant2x2Matrix() {
int[][] matrix = {{1, 2}, {3, 4}};
int expected = -2;
assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 2));
}
@Test
public void testDeterminant3x3Matrix() {
int[][] matrix = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
int expected = 0;
assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 3));
}
@Test
public void testDeterminant3x3MatrixNonZero() {
int[][] matrix = {{1, 2, 3}, {0, 1, 4}, {5, 6, 0}};
int expected = 1;
assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 3));
}
@Test
public void testDeterminant1x1Matrix() {
int[][] matrix = {{7}};
int expected = 7;
assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 1));
}
@Test
public void testDeterminant4x4Matrix() {
int[][] matrix = {{1, 0, 0, 1}, {0, 1, 0, 0}, {0, 0, 1, 0}, {1, 0, 0, 1}};
int expected = 0;
assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 4));
}
@Test
public void testDeterminant4x4MatrixZero() {
int[][] matrix = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}, {13, 14, 15, 16}};
int expected = 0;
assertEquals(expected, DeterminantOfMatrix.determinant(matrix, 4));
}
}