---
tags:
  - daily
date: 2023-10-26
---
## Tasks
- [ ] #todo/b finish file format implementation (v0.2, unit tests)
- [ ] #todo/b Add automated unit tests in the gitlab
- [ ] #todo/b use the fileformat in the 3d map implementation
- [ ] #todo/p start exam_generator project. Is this a software that can actually make profit?
- [ ] #todo/p mario games auf tutti
- [x] Add v0.2 samples to testing #todo/b ⏫ 📅 2023-10-27 ✅ 2023-10-27
- [x] Implement the gitlab CI for the unit tests of the fileformat project #todo/b 🔽 📅 2023-10-27 ✅ 2023-10-27

## Quick Notes


## Learnings
#learning/investing
- Compound interest is key to building wealth. The average yearly return of the S&P 500 over the last 30 years was 9.9% (or 7.2% inflation-adjusted). 

#learning/cpp
* how long is `"hi"` as a char array? ;; Length 3. In addition all char arrays in C and C++ contain the null terminator indicating the end of this string: `"h", "i", "\0"`
<!--SR:!2023-12-10,14,290-->

[[GTest Framework|GoogleTest]] is actually a great method to test your code during development. I should always start with google test instead of a dummy main function that executes stuff and immediately shows if its working or not.
It is also surprisingly easy to get started with the google test library in C++. You just need to define the following [[CMake|CMakeLists.txt]] in your `test` subfolder:
```cmake
# 1. integrate GTest
include(FetchContent)

FetchContent_Declare(
googletest
GIT_REPOSITORY https://github.com/google/googletest.git
GIT_TAG release-1.11.0
)

FetchContent_MakeAvailable(googletest)
add_library(GTest::GTest INTERFACE IMPORTED)
target_link_libraries(GTest::GTest INTERFACE gtest_main)

# 2. add test executable
set(test_exe_name ${library_name}_test)
add_executable(${test_exe_name} test_onesec3d_cpp.cpp)

target_link_libraries(${test_exe_name}
		PRIVATE
		${library_name}
		GTest::gtest
		GTest::gtest_main
)

add_test(onesec3d_tests ${test_exe_name})
set_tests_properties(onesec3d_tests PROPERTIES
		ENVIRONMENT
		DATADIR=${CMAKE_CURRENT_SOURCE_DIR}/sample_3d_files/
)
```
Once this is done you can implement your test in the specified executable test file. For example:
```cpp
#include <gtest/gtest.h>

TEST(test_onesec3d, test_read_rewrite_equal_hash)
{
	// ... do your testing stuff
	// execute tests
	ASSERT_EQ(1, 1);
}

```
The `DATADIR` environment variable in `set_test_properties` is a smart way to pass the test folder of the build to the test file in order to use assets such as files etc in your tests.

#learning/cpp this seems a good learning resource for cpp: https://matgomes.com/integrate-google-test-into-cmake/