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Testing Command-line Calculator Operations in cover-agent

This test suite validates a calculator application’s core arithmetic functionality using Google Test framework. The tests focus on verifying basic mathematical operations through command-line interface parameters, ensuring accurate calculation results.

Test Coverage Overview

The test coverage focuses on the calculator’s addition operation through CLI interface.

Key areas tested include:

Basic addition operation validation
Command-line argument handling (–add flag)
Numeric precision using double comparison

Implementation Analysis

The testing approach utilizes Google Test’s fixture-based testing pattern for systematic validation of calculator operations.

Technical implementation details:

EXPECT_DOUBLE_EQ matcher for floating-point comparison
Test fixture organization using TEST macro
Command-line argument processing validation

Technical Details

Testing infrastructure includes:

Google Test (gtest) framework
Custom calculator.hpp header integration
Standard C++ testing environment
Command-line interface testing capabilities

Best Practices Demonstrated

The test suite demonstrates several testing best practices for C++ applications.

Notable practices include:

Isolated test cases for specific functionality
Precise floating-point comparison techniques
Clear test naming conventions
Proper test initialization and cleanup

codium-ai/cover-agent

templated_tests/cpp_cli/test_calculator.cpp

            
#include "calculator.hpp"
#include <gtest/gtest.h>

TEST(CalculatorTest, HandlesAddition) {
    EXPECT_DOUBLE_EQ(calculate(1, 1, "--add"), 2);
}

int main(int argc, char **argv) {
    ::testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}