tests: Added tests for magic files

tests/magic/CMakeLists.txt

@@ -0,0 +1,31 @@
+cmake_minimum_required(VERSION 3.16)
+
+project(magic_test)
+
+set(TOP_LEVEL "${CMAKE_CURRENT_SOURCE_DIR}/../..")
+
+set(MAGIC_FOLDER "${TOP_LEVEL}/magic")
+file(GLOB MAGIC_FILES
+    "${MAGIC_FOLDER}/*"
+)
+
+add_executable(magic_test
+        source/main.cpp
+)
+
+find_package(PkgConfig REQUIRED)
+pkg_search_module(MAGIC libmagic>=5.39)
+
+target_include_directories(magic_test PRIVATE include)
+target_link_libraries(magic_test libpl magic)
+
+set_target_properties(magic_test PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
+
+foreach (magic_file IN LISTS MAGIC_FILES)
+    file(RELATIVE_PATH MAGIC_NAME ${MAGIC_FOLDER} ${magic_file})
+
+    set(TEST_NAME "Magic/${MAGIC_NAME}")
+
+    add_test(NAME ${TEST_NAME} COMMAND magic_test "${MAGIC_NAME}" "${magic_file}" WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
+    set_tests_properties(${TEST_NAME} PROPERTIES SKIP_RETURN_CODE 77)
+endforeach ()

tests/magic/source/main.cpp

@@ -0,0 +1,34 @@
+#include <helpers/file.hpp>
+#include <helpers/guards.hpp>
+
+#include <fmt/format.h>
+#include <cstdlib>
+
+#include <magic.h>
+
+#define EXIT_SKIP 77
+
+int main(int argc, char **argv) {
+    // Any number of arguments other than 3 are invalid
+    if (argc != 3)
+        return EXIT_FAILURE;
+
+    // Extract command line arguments
+    const std::string magicName       = argv[1];
+    const std::fs::path magicFilePath = argv[2];
+
+    fmt::print("Running test {} on test file {}\n", magicName, magicFilePath.filename().string());
+
+    magic_t ctx = magic_open(MAGIC_NONE);
+    PL_ON_SCOPE_EXIT { magic_close(ctx); };
+
+    if (ctx == nullptr)
+        return EXIT_FAILURE;
+
+    if (magic_compile(ctx, magicFilePath.string().c_str()) != 0) {
+        fmt::print("Error during compilation: {}\n", magic_error(ctx));
+        return EXIT_FAILURE;
+    }
+
+    return EXIT_SUCCESS;
+}