#include <catch2/catch_test_macros.hpp>
#include <catch2/generators/catch_generators.hpp>
#include <filesystem>
#include <FEXHeaderUtils/Filesystem.h>

TEST_CASE("LexicallyNormal") {
  auto Path = GENERATE("", "/", "/./", "//.", "//./", "//.//",

                       ".", "..", ".//", "../../", "././", "./../", "./../", "./.././.././.", "./.././.././..",

                       "./foo1/../", "foo4/.///bar/../", "foo5/././",

                       "foo6/", "foo7/test", "foo8/test/", "foo9/./../test/",

                       "/../..", "...", "/...", "foo10/...", "/..", "/foo11/../../bar");

  REQUIRE(std::string_view(FHU::Filesystem::LexicallyNormal(Path)) == std::string_view(std::filesystem::path(Path).lexically_normal().string()));
}

TEST_CASE("LexicallyNormalDifferences", "[!shouldfail]") {
  auto Path = GENERATE("",
                       // std::fs here keeps the `/` after `foo2/`
                       // FEX algorithm doesn't keep behaviour here.
                       "foo2/./bar/..",  // std::fs -> "foo2/"
                       "foo2/.///bar/.." // std::fs -> "foo3/"
  );

  REQUIRE(std::string_view(FHU::Filesystem::LexicallyNormal(Path)) == std::string_view(std::filesystem::path(Path).lexically_normal().string()));
}

TEST_CASE("ParentPath") {
  auto Path = GENERATE("", "/", "/./", "//.", "//./", "//.//",

                       ".", "..", ".//", "../../", "././", "./../", "./../", "./.././.././.", "./.././.././..",

                       "./foo/../", "foo/./bar/..", "foo/.///bar/..", "foo/.///bar/../",
                       "foo/././"
                       "...",
                       "/...", "foo/...", "/..", "/foo/../../bar");

  REQUIRE(std::string_view(FHU::Filesystem::ParentPath(Path)) == std::string_view(std::filesystem::path(Path).parent_path().string()));
}