[Glacier] Add a basic unit testing framework.

lib/glacier/test/CMakeLists.txt

@@ -0,0 +1,8 @@
+find_package(Catch2 3 REQUIRED)
+
+add_subdirectory(container)
+
+add_custom_target(build_test)
+add_dependencies(build_test
+  glc_vec_test)
+

lib/glacier/test/container/CMakeLists.txt

@@ -0,0 +1,4 @@
+add_executable(glc_vec_test vector.cpp)
+target_link_libraries(glc_vec_test glacier Catch2::Catch2WithMain)
+target_include_directories(glc_vec_test PRIVATE "../..")
+add_test(NAME glc_vec_test COMMAND $<TARGET_FILE:glc_vec_test>)

lib/glacier/test/container/vector.cpp

@@ -0,0 +1,10 @@
+#include "container/vector.h"
+
+#include <catch2/catch_test_macros.hpp>
+
+using namespace glcr;
+
+TEST_CASE("Build Vector", "[vector]") {
+  Vector<uint64_t> v;
+  REQUIRE(v.size() == 0);
+}