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Create ShellSortTest (#3783)

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Co-authored-by: Debasish Biswas <debasishbsws.abc@gmail.com>
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Hyun
2022-12-03 22:27:15 +09:00
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parent 501aca3e31
commit 219ec7c223
1 changed files with 67 additions and 0 deletions
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src/test/java/com/thealgorithms/sorts/ShellSortTest.java Normal file
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package com.thealgorithms.sorts;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import org.junit.jupiter.api.Test;
public class ShellSortTest {
private ShellSort shellSort = new ShellSort();
@Test
public void ShellSortEmptyArray() {
Integer[] inputArray = {};
Integer[] outputArray = shellSort.sort(inputArray);
Integer[] expectedOutput = {};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void ShellSortSingleIntegerArray() {
Integer[] inputArray = { 4 };
Integer[] outputArray = shellSort.sort(inputArray);
Integer[] expectedOutput = { 4 };
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void ShellSortSingleStringArray() {
String[] inputArray = { "s" };
String[] outputArray = shellSort.sort(inputArray);
String[] expectedOutput = { "s" };
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void ShellSortNonDuplicateIntegerArray() {
Integer[] inputArray = { 6, -1, 99, 27, -15, 23, -36 };
Integer[] outputArray = shellSort.sort(inputArray);
Integer[] expectedOutput = { -36, -15, -1, 6, 23, 27, 99};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void ShellSortDuplicateIntegerArray() {
Integer[] inputArray = { 6, -1, 27, -15, 23, 27, -36, 23 };
Integer[] outputArray = shellSort.sort(inputArray);
Integer[] expectedOutput = { -36, -15, -1, 6, 23, 23, 27, 27};
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void ShellSortNonDuplicateStringArray() {
String[] inputArray = { "s", "b", "k", "a", "d", "c", "h" };
String[] outputArray = shellSort.sort(inputArray);
String[] expectedOutput = {"a", "b", "c", "d", "h", "k", "s" };
assertArrayEquals(outputArray, expectedOutput);
}
@Test
public void ShellSortDuplicateStringArray() {
String[] inputArray = { "s", "b", "d", "a", "d", "c", "h", "b" };
String[] outputArray = shellSort.sort(inputArray);
String[] expectedOutput = {"a", "b", "b", "c", "d", "d", "h", "s" };
assertArrayEquals(outputArray, expectedOutput);
}
}