Unit Testing
Focuses on testing individual units of code in isolation.
Instructions
When creating unit tests:
Identify test cases
- Normal inputs and expected outputs
- Edge cases (empty, null, boundary values)
- Error conditions
Write test structure
#[test] fn test_function_name_scenario() { // Arrange let input = ...; // Act let result = function(input); // Assert assert_eq!(result, expected); }Best practices
- One assertion per test when possible
- Clear, descriptive test names
- Test behavior, not implementation
Examples
Input: Create unit tests for add function Output: Tests covering positive numbers, negative numbers, zeros, and overflow cases.
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