ChatGPT's Hands: Code Snippet Generation and Test Case Creation

2025-05-01 2025-05-01

Tak@

Following the previous article, "ChatGPT’s Eyes: Code Analysis and Bug Fixing," this time we explore how ChatGPT can generate code snippets and create test cases.

Code Snippet Generation

Code snippets are short fragments of source code designed to perform specific tasks. This section explains how to structure prompts for ChatGPT to generate useful code snippets.

As a case study, we’ll consider a scenario where a script determines whether a string consists solely of full-width Katakana using regular expressions. The long sound mark "ー" should be classified as full-width Katakana, while half-width Katakana should be excluded.

Create a code snippet that meets the following conditions:

# Programming Language: [Specify the desired programming language]

# Code Snippet Details:
[Provide clear instructions for the desired code snippet, including examples if necessary.]

Test Case Creation

This section explains how to structure prompts for ChatGPT to generate test cases for a given function. As a practical example, we will create test cases and test code for the "isKatakana" function generated in the code snippet section.

1. Generate test cases to verify the functionality of a source code written in the specified programming language.
2. Output test cases as descriptions with expected results in CSV format.
    2.1. The test case fields should be:
        No, Test Case, Perspective, Input Value, Expected Result
3. Include all test perspectives listed in "Perspectives to Include."
4. Finally, generate test code to execute all the test cases.

# Programming Language: [Specify the language]

# Perspectives to Include: [List the perspectives relevant for testing]

# Test Cases

# Test Code

# Source Code:
[Provide the source code for which test cases should be generated]

By leveraging ChatGPT's capabilities for code snippet generation and test case creation, developers can efficiently write and validate code.