| name | generating-test-data |
| description | Automatically generates valid, invalid, and boundary test data based on field names and validation rules. Use when the user provides field specifications and needs a comprehensive data set for testing forms, APIs, or database constraints. |
Generating Test Data
When to use this skill
- When a user provides a field name (e.g., "Password", "Email", "Age") and a set of validation rules.
- When asked to generate "Valid", "Invalid", or "Boundary" test data sets.
- When preparing data for automated tests or manual regression testing.
Workflow
- Rule Analysis:
- Parse the provided rules for each field (min/max length, character types, patterns).
- Identify the "Boundary" values (e.g., if max is 10, boundary values are 9, 10, and 11).
- Data Set Construction:
- Valid Data: Generate 3-5 strings/values that satisfy ALL rules.
- Invalid Data: Generate values that violate exactly one rule at a time to isolate validation logic.
- Boundary Data: Specifically target minimum and maximum limits.
- Reporting:
- Present the data in a clear table format categorized by data type.
Instructions
1. Parsing Validation Rules
Identify tokens like "Min", "Max", "Uppercase", "Special Character", "Numeric Only", "Regex".
Example Input:
- Field:
Username
- Rules:
Min 5, Max 12, Alpha-numeric only
2. Generating Values
- Valid:
User123, Admin88, TestPlayer
- Invalid:
Abc (Too short), LongUsername1234 (Too long), User@123 (Invalid character)
- Boundary:
abcde (5 chars), abcdefghijkl (12 chars), abcd (4 chars - Invalid boundary)
Output Format
Field: [Field Name]
| Category | Value | Rule Tested / Reason |
|---|
| Valid | SafePass1! | Meets all criteria |
| Invalid | safepass1! | Missing uppercase |
| Invalid | Safe1! | Too short (5 chars) |
| Boundary | Abcdefg1! | Minimum length (8 chars) |
| Boundary | VeryLongPass123!@# | Realistic long value |
Resources
