simple example

Suppose we have a T add(T a, Tb) function that we want to test:

template <typename T>
T add(T a, T b) {
    return a + b;
}

We can write a test for it like this:

TEST_CASE("add") {
    auto test = [](auto a, auto b) {
        return add(a, b);
    };
    REQUIRE(test(1, 2) == 3);
    REQUIRE(test(1.0, 2.0) == 3.0);
}

the complete add_test.cc file is here:

#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
#include "doctest.h"

template <typename T>
T add(T a, T b) {
    return a + b;
}

TEST_CASE("add") {
    auto test = [](auto a, auto b) {
        return add(a, b);
    };
    REQUIRE(test(1, 2) == 3);
    REQUIRE(test(1.0, 2.0) == 3.0);
}

We can compile and run it like this:

$ g++ -std=c++17 -I. -o add_test add_test.cc
$ ./add_test
[doctest] doctest version is "2.4.6"
[doctest] run with "--help" for options
===============================================================================
[doctest] test cases:      1 |      1 passed |      0 failed |      0 skipped
[doctest] assertions:      2 |      2 passed |      0 failed |
[doctest] Status: SUCCESS!

In the turbo project, turbo uses cmake as the build system, and encapsulates the ci system based on cmake. Call carbin-ccmake. You can see the specific modules in the carbin_cmake directory of the project. Next, use turbo to perform integrated compilation testing.

carbin_cc_test(
    NAME
    add_test
    SOURCES
    "add_test.cc"
    COPTS
    ${CARBIN_CXX_OPTIONS}
    DEPS
    ${CARBIN_DEPS_LINK}

the above is the cmake code for compiling the add_test.cc file. The carbin_cc_test is a cmake function provided by carbin.

Note

to install carbin-cmake is easy, first pip install catbin, then carbin ccreate --name project_name --requirements --test  --example.

add the above cmake code to the CMakeLists.txt file in the project test directory, and then execute the following command to compile and run the test:

$ mkdir build
$ cd build
$ cmake ..
$ make
$ make test

if no error curred, that means the test is passed.