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Add tests, remove print & main methods in BoundaryFill.java (#5640)

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This commit is contained in:
Hardik Pawar
2024-10-10 01:26:51 +05:30
committed by GitHub
parent 48c65e4c5e
commit c0f35242a1
3 changed files with 73 additions and 44 deletions
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44
src/main/java/com/thealgorithms/dynamicprogramming/BoundaryFill.java
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@ -52,48 +52,4 @@ public final class BoundaryFill {
boundaryFill(image, xCoordinate - 1, yCoordinate - 1, newColor, boundaryColor);
}
}
/**
* This method will print the 2D image matrix
*
* @param image The image to be printed on the console
*/
public static void printImageArray(int[][] image) {
for (int i = 0; i < image.length; i++) {
for (int j = 0; j < image[0].length; j++) {
System.out.print(image[i][j] + " ");
}
System.out.println();
}
}
// Driver Program
public static void main(String[] args) {
// Input 2D image matrix
int[][] image = {
{0, 0, 0, 0, 0, 0, 0},
{0, 3, 3, 3, 3, 0, 0},
{0, 3, 0, 0, 3, 0, 0},
{0, 3, 0, 0, 3, 3, 3},
{0, 3, 3, 3, 0, 0, 3},
{0, 0, 0, 3, 0, 0, 3},
{0, 0, 0, 3, 3, 3, 3},
};
boundaryFill(image, 2, 2, 5, 3);
/* Output ==>
* 0 0 0 0 0 0 0
0 3 3 3 3 0 0
0 3 5 5 3 0 0
0 3 5 5 3 3 3
0 3 3 3 5 5 3
0 0 0 3 5 5 3
0 0 0 3 3 3 3
* */
// print 2D image matrix
printImageArray(image);
}
}

66
src/test/java/com/thealgorithms/dynamicprogramming/BoundaryFillTest.java Normal file
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@ -0,0 +1,66 @@
package com.thealgorithms.dynamicprogramming;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
public class BoundaryFillTest {
private int[][] image;
@BeforeEach
void setUp() {
image = new int[][] {{0, 0, 0, 0, 0, 0, 0}, {0, 3, 3, 3, 3, 0, 0}, {0, 3, 0, 0, 3, 0, 0}, {0, 3, 0, 0, 3, 3, 3}, {0, 3, 3, 3, 0, 0, 3}, {0, 0, 0, 3, 0, 0, 3}, {0, 0, 0, 3, 3, 3, 3}};
}
@Test
void testGetPixel() {
assertEquals(3, BoundaryFill.getPixel(image, 1, 1));
assertEquals(0, BoundaryFill.getPixel(image, 2, 2));
assertEquals(3, BoundaryFill.getPixel(image, 4, 3));
}
@Test
void testPutPixel() {
BoundaryFill.putPixel(image, 2, 2, 5);
assertEquals(5, BoundaryFill.getPixel(image, 2, 2));
BoundaryFill.putPixel(image, 0, 0, 7);
assertEquals(7, BoundaryFill.getPixel(image, 0, 0));
}
@Test
void testBoundaryFill() {
BoundaryFill.boundaryFill(image, 2, 2, 5, 3);
int[][] expectedImage = {{0, 0, 0, 0, 0, 0, 0}, {0, 3, 3, 3, 3, 0, 0}, {0, 3, 5, 5, 3, 0, 0}, {0, 3, 5, 5, 3, 3, 3}, {0, 3, 3, 3, 5, 5, 3}, {0, 0, 0, 3, 5, 5, 3}, {0, 0, 0, 3, 3, 3, 3}};
for (int i = 0; i < image.length; i++) {
assertArrayEquals(expectedImage[i], image[i]);
}
}
@Test
void testBoundaryFillEdgeCase() {
BoundaryFill.boundaryFill(image, 1, 1, 3, 3);
int[][] expectedImage = {{0, 0, 0, 0, 0, 0, 0}, {0, 3, 3, 3, 3, 0, 0}, {0, 3, 0, 0, 3, 0, 0}, {0, 3, 0, 0, 3, 3, 3}, {0, 3, 3, 3, 0, 0, 3}, {0, 0, 0, 3, 0, 0, 3}, {0, 0, 0, 3, 3, 3, 3}};
for (int i = 0; i < image.length; i++) {
assertArrayEquals(expectedImage[i], image[i]);
}
}
@Test
void testBoundaryFillInvalidCoordinates() {
BoundaryFill.boundaryFill(image, -1, -1, 5, 3);
int[][] expectedImage = {{0, 0, 0, 0, 0, 0, 0}, {0, 3, 3, 3, 3, 0, 0}, {0, 3, 0, 0, 3, 0, 0}, {0, 3, 0, 0, 3, 3, 3}, {0, 3, 3, 3, 0, 0, 3}, {0, 0, 0, 3, 0, 0, 3}, {0, 0, 0, 3, 3, 3, 3}};
for (int i = 0; i < image.length; i++) {
assertArrayEquals(expectedImage[i], image[i]);
}
}
}