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Testing Command-Line Calculator Operations in cover-agent

This test suite validates basic arithmetic operations using a command-line calculator implementation in C. The tests utilize the Unity testing framework to verify addition functionality with proper error handling and status codes.

Test Coverage Overview

The test coverage focuses on validating the calculator’s addition operation with specific numeric inputs.

Tests basic addition with positive integers (5 + 3)
Verifies both the calculation result and status code
Handles command-line style operation flags (–add)

Implementation Analysis

The testing approach employs Unity’s assertion framework for C to validate both computational accuracy and error handling.

Uses TEST_ASSERT_EQUAL_INT for precise integer comparison
Implements dual verification of result and status
Follows command-line argument parsing patterns

Technical Details

Unity testing framework for C
Double precision floating-point calculations
Status code validation
Command-line argument simulation
Integer-based assertions

Best Practices Demonstrated

The test implementation showcases clean C testing practices with clear separation of concerns.

Explicit status code checking
Proper function parameter handling
Clear test case naming conventions
Structured assertion organization

codium-ai/cover-agent

templated_tests/c_cli/test_calc.c

            
#include "unity.h"
#include "calc.h"

void test_Addition(void) {
    int status;
    double result = calculate(5, 3, "--add", &status);
    TEST_ASSERT_EQUAL_INT(8, result);
    TEST_ASSERT_EQUAL_INT(0, status);
}