Today, we’re diving into the world of ascending sequences and putting our code to the test using JUnit 5. In this post, we’ll be exploring the AscendingSequence class and its associated testing suite, dissecting each scenario to ensure our algorithm stands strong.
Testing the Happy Path
Let’s kick things off with the classic “happy path” scenario. We’ll verify that our ascendingSequenceAlgorithm method generates the expected ascending sequence. Starting from 0 and stepping up to 5 with increments of 1, we’re looking for the reassuring sequence of 0, 1, 2, 3, 4, and 5. The AAA pattern (Arrange-Act-Assert) ensures a robust testing structure.
Happy Paths with Variations
But that’s not all! We’re not stopping at the basics. Positive numbers, negative numbers, and a mix of both will undergo rigorous testing to guarantee our algorithm’s versatility. Whether it’s the simplicity of -10 to -7 or the complexity of -5 to 5, our tests will cover it all.
Edge Cases and Beyond
As developers, we know the importance of handling edge cases gracefully. What happens when the start value is larger than the end value? How does the algorithm behave with a negative step or even a step of zero? We’re leaving no stone unturned as we explore these critical scenarios, ensuring our code remains resilient in all conditions.
Repeated Testing for Confidence
To add an extra layer of confidence, we’re running some of our tests not just once, but 50 times. Repetition helps identify potential issues that may only surface under specific conditions, making our codebase even more robust.
So, fasten your seatbelts as we embark on this journey of testing and validation. The AscendingSequence class is about to undergo rigorous scrutiny, and together, we’ll ensure its reliability in various scenarios.
Stay tuned for the results, insights, and perhaps a few surprises along the way. Let’s code confidently, test thoroughly, and build software that stands the test of time!
// Import JUnit 5 annotations and assertions
import org.junit.jupiter.api.*;
import static org.junit.jupiter.api.Assertions.*;
// Tags: JUnit, Testing, Java, AscendingSequenceTest
// Define test order using OrderAnnotation
@TestMethodOrder(MethodOrderer.OrderAnnotation.class)
public class AscendingSequenceTest {
// Tags: JUnit, HappyPath, AscendingSequence, Algorithm
// Description: This test ensures that the ascendingSequenceAlgorithm method generates a correct ascending sequence.
@Test
public void testAscendingSequenceHappyPath() {
// Sequence: 0, 1, 2, 3, 4, 5
// Explanation: Here, AAA pattern is applied. Block A sets all values.
int start = 0;
int end = 5;
int step = 1;
int[] expectedResult = {0, 1, 2, 3, 4, 5};
// Block A: Actions to obtain actualResult
AscendingSequence as = new AscendingSequence();
int[] actualResult = as.ascendingSequenceAlgorithm(start, end, step);
// Block A: Compare expectedResult with actualResult
assertArrayEquals(expectedResult, actualResult);
}
// Tags: JUnit, HappyPath, AscendingSequence, Algorithm, RepeatedTest
// Description: This test checks the happy path scenario for positive numbers by repeating the test 50 times.
@Order(1)
@RepeatedTest(50) // Run the test 50 times
@Test
public void testAscendingSequenceHappyPathPositiveNumber() {
// Sequence: 0, 1, 2, 3, 4, 5
int start = 0;
int end = 5;
int step = 1;
int[] expectedResult = {0, 1, 2, 3, 4, 5};
AscendingSequence as = new AscendingSequence();
int[] actualResult = as.ascendingSequenceAlgorithm(start, end, step);
assertArrayEquals(expectedResult, actualResult);
}
// Tags: JUnit, HappyPath, AscendingSequence, Algorithm, NegativeNumber
// Description: This test checks the happy path scenario for negative numbers.
@Order(2)
@Test
public void testAscendingSequenceHappyPathNegativeNumber() {
// Sequence: -10, -9, -8, -7
int start = -10;
int end = -7;
int step = 1;
int[] expectedResult = {-10, -9, -8, -7};
AscendingSequence as = new AscendingSequence();
int[] actualResult = as.ascendingSequenceAlgorithm(start, end, step);
assertArrayEquals(expectedResult, actualResult);
}
// Tags: JUnit, HappyPath, AscendingSequence, Algorithm, NegativePositiveNumber
// Description: This test checks the happy path scenario for a mix of negative and positive numbers.
@Order(3)
@Test
public void testAscendingSequenceHappyPathNegativePositiveNumber() {
// Sequence: -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5
int start = -5;
int end = 5;
int step = 1;
int[] expectedResult = {-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5};
AscendingSequence as = new AscendingSequence();
int[] actualResult = as.ascendingSequenceAlgorithm(start, end, step);
assertArrayEquals(expectedResult, actualResult);
}
// Tags: JUnit, HappyPath, AscendingSequence, Algorithm, StepTwo
// Description: This test checks the happy path scenario for a step of two.
@Order(4)
@Test
public void testAscendingSequenceHappyPathStepTwo() {
// Sequence: 0, 2, 4
int start = 0;
int end = 5;
int step = 2;
int[] expectedResult = {0, 2, 4};
AscendingSequence as = new AscendingSequence();
int[] actualResult = as.ascendingSequenceAlgorithm(start, end, step);
assertArrayEquals(expectedResult, actualResult);
}
// Tags: JUnit, EdgeCase, AscendingSequence, Algorithm, StartLargerThanEnd
// Description: This test checks the case when the start value is larger than the end value.
@Test
public void testAscendingSequenceStartLargerThanEnd() {
int start = 5;
int end = 0;
int step = 2;
int[] expectedResult = {};
AscendingSequence as = new AscendingSequence();
int[] actualResult = as.ascendingSequenceAlgorithm(start, end, step);
assertArrayEquals(expectedResult, actualResult);
}
// Tags: JUnit, EdgeCase, AscendingSequence, Algorithm, NegativeStep
// Description: This test checks the case when the step is negative.
@Test
public void testAscendingSequenceNegativeStep() {
int start = 0;
int end = 5;
int step = -1;
int[] expectedResult = {};
AscendingSequence as = new AscendingSequence();
int[] actualResult = as.ascendingSequenceAlgorithm(start, end, step);
assertArrayEquals(expectedResult, actualResult);
}
// Tags: JUnit, EdgeCase, AscendingSequence, Algorithm, StepIsZero
// Description: This test checks the case when the step is zero.
@Test
public void testAscendingSequenceStepIsZero() {
int start = 5;
int end = 0;
int step = 0;
int[] expectedResult = {};
AscendingSequence as = new AscendingSequence();
int[] actualResult = as.ascendingSequenceAlgorithm(start, end, step);
assertArrayEquals(expectedResult, actualResult);
}
}
