add build and test instructions to readme

CMakeLists.txt

@@ -13,7 +13,7 @@ include(FetchContent)
 FetchContent_Declare(
     googletest
     GIT_REPOSITORY https://github.com/google/googletest.git
-    GIT_TAG        v1.17.x  # Use a specific version tag or commit hash
+    GIT_TAG        v1.17.x
 )
 FetchContent_MakeAvailable(googletest)
 
@@ -39,9 +39,17 @@ target_include_directories(maiden_test PRIVATE
     "${CMAKE_CURRENT_SOURCE_DIR}/src"
 )
 
+target_compile_options(maiden_test PRIVATE --coverage)
+target_link_options(maiden_test PRIVATE --coverage)
+
+# TODO: add option for disabling tests (like if target == DEBUG then tests on, otherwise tests off)
 target_link_libraries(maiden_test PRIVATE
+    GTest::gmock
     GTest::gmock_main
 )
 
+include(CTest)
+enable_testing() # ctest is whatever
+
 include(GoogleTest)
 gtest_discover_tests(maiden_test)

README.md

@@ -8,10 +8,46 @@ The maiden project is a GPU accelerated 3D rendering engine built with C++ based
 
 ## Getting Started
 
-### git instructions here
-### build instructions here
+### Clone Repository
+```bash
+$ git clone https://git.vxbard.net/homeburger/maiden.git
+
+# If there's any necessary submodules then:
+$ git clone --recurse-submodules https://git.vxbard.net/homeburger/maiden.git
+
+# If you have already cloned the repository and you need its submodules:
+$ git submodule update --init --recursive
+```
+### Build 
+This app uses CMake and C++20, so a compatible compiler (gcc8, clang9, msvc16) are necessary.
+
+Most library prerequisites are handled within CMake. Any others that need to be manually installed will be described below as the project grows.
+
+To build the project (using default build directory "build"):
+```bash
+# configure
+$ cmake -S . -B build # + any extra options
+
+# build
+$ cmake --build build -j
+
+# execute
+$ cd build
+$ ./maiden
+```
+
+### Testing
+This app uses GoogleTest for building unit tests. The below instructions use ctest and gcovr for test execution and code coverage:
+```bash
+# execute unit tests
+$ ctest -T Test # + filter options
+
+# analyze code coverage
+$ cd build
+$ gcovr -r .. --filter "../src"
+```
+
 ### app troubleshooting here
-### testing instructions here
 
 ## Development Roadmap
 ### lots of todo here