Catch2下載 - Catch2原始碼下載

Catch2

C/C++

v3.7.1

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什麼是第二條軍規？

Catch2 主要是 C++ 的單元測試框架，但它也提供基本的微基準測試功能和簡單的 BDD 巨集。

Catch2 的主要優點是使用起來既簡單又自然。測試名稱不必是有效的標識符，斷言看起來像普通的 C++ 布林表達式，並且節提供了一種在測試中共享設定和拆卸程式碼的良好本地方法。

單元測試範例

# include < catch2/catch_test_macros.hpp >

# include < cstdint >

uint32_t factorial ( uint32_t number ) {
    return number <= 1 ? number : factorial (number- 1 ) * number;
}

TEST_CASE ( " Factorials are computed " , " [factorial] " ) {
    REQUIRE ( factorial ( 1 ) == 1 );
    REQUIRE ( factorial ( 2 ) == 2 );
    REQUIRE ( factorial ( 3 ) == 6 );
    REQUIRE ( factorial ( 10 ) == 3'628'800 );
}

微基準範例

# include < catch2/catch_test_macros.hpp >
# include < catch2/benchmark/catch_benchmark.hpp >

# include < cstdint >

uint64_t fibonacci ( uint64_t number) {
    return number < 2 ? number : fibonacci (number - 1 ) + fibonacci (number - 2 );
}

TEST_CASE ( " Benchmark Fibonacci " , " [!benchmark] " ) {
    REQUIRE ( fibonacci ( 5 ) == 5 );

    REQUIRE ( fibonacci ( 20 ) == 6'765 );
    BENCHMARK ( " fibonacci 20 " ) {
        return fibonacci ( 20 );
    };

    REQUIRE ( fibonacci ( 25 ) == 75'025 );
    BENCHMARK ( " fibonacci 25 " ) {
        return fibonacci ( 25 );
    };
}