Update Catch2 to v3.8.1

.github/workflows/macos.yml

@@ -13,6 +13,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+      with:
+        submodules: recursive
     - name: cmake
       run: cmake -B build -DCMAKE_BUILD_TYPE=Debug
     - name: build

.github/workflows/ubuntu.yml

@@ -13,6 +13,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+      with:
+        submodules: recursive
     - name: compiler
       run: sudo apt-get update && sudo apt-get install -y clang
     - name: cmake

.github/workflows/windows.yml

@@ -13,6 +13,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+      with:
+        submodules: recursive
     - name: cmake
       run: cmake -B build -DCMAKE_BUILD_TYPE=Debug -DCMAKE_CXX_COMPILER=/usr/bin/clang++
     - name: build

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "tests/Catch2"]
+	path = tests/Catch2
+	url = https://github.com/catchorg/Catch2.git

tests/CMakeLists.txt

@@ -1,9 +1,9 @@
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/")
 
 find_package(Runtime REQUIRED)
+add_subdirectory(Catch2)
 
 set(test-sources
-    main.cpp
     path.cpp
     slug.cpp
     table.cpp
@@ -15,3 +15,4 @@ set(test-sources
 add_executable(test ${test-sources})
 target_link_libraries(test router::router)
 target_link_libraries(test cxx::runtime)
+target_link_libraries(test Catch2::Catch2WithMain)