#include <criterion/criterion.h>
#include <criterion/internal/assert.h>
#include <criterion/internal/test.h>

#include "utils.h"

/*
** TESTS: string/infer_ext_from_filename.c
*/

Test(utils_string, infer_ext_from_filename_valid)
{
	const char	*ext;

	ext = infer_ext_from_filename("test.c.md");
	cr_assert_not_null(ext);
	cr_assert_str_eq(ext, "c");

	ext = infer_ext_from_filename("main.py.md");
	cr_assert_not_null(ext);
	cr_assert_str_eq(ext, "py");

	ext = infer_ext_from_filename("path/to/file.js.md");
	cr_assert_not_null(ext);
	cr_assert_str_eq(ext, "js");
}

Test(utils_string, infer_ext_from_filename_invalid)
{
	const char	*ext;

	ext = infer_ext_from_filename("test.md");
	cr_assert_null(ext);

	ext = infer_ext_from_filename("noext");
	cr_assert_null(ext);

	ext = infer_ext_from_filename("test.c");
	cr_assert_null(ext);

	ext = infer_ext_from_filename("");
	cr_assert_null(ext);

	ext = infer_ext_from_filename(NULL);
	cr_assert_null(ext);
}

Test(utils_string, infer_ext_from_filename_edge_cases)
{
	const char	*ext;

	ext = infer_ext_from_filename(".c.md");
	cr_assert_null(ext);

	ext = infer_ext_from_filename("a.c.md");
	cr_assert_not_null(ext);
	cr_assert_str_eq(ext, "c");

	ext = infer_ext_from_filename("a.cpp.md");
	cr_assert_not_null(ext);
	cr_assert_str_eq(ext, "cpp");
}