From 6a1db3b8b6723991873cf97c605e12d96547754f Mon Sep 17 00:00:00 2001
From: neargye <neargye@gmail.com>
Date: Tue, 4 Jan 2022 22:00:03 +0200
Subject: [PATCH] add tests

---
 test/test.cpp       | 17 +++++++++++++++++
 test/test_flags.cpp | 19 +++++++++++++++++++
 2 files changed, 36 insertions(+)

diff --git a/test/test.cpp b/test/test.cpp
index c595249..d0541d0 100644
--- a/test/test.cpp
+++ b/test/test.cpp
@@ -394,17 +394,30 @@ TEST_CASE("enum_value") {
   REQUIRE(enum_value<Color&>(1) == Color::GREEN);
   REQUIRE(enum_value<Color>(2) == Color::BLUE);
 
+  REQUIRE(enum_value<Color, 0>() == Color::RED);
+  REQUIRE(enum_value<Color, 1>() == Color::GREEN);
+  REQUIRE(enum_value<Color, 2>() == Color::BLUE);
+
   constexpr auto no = enum_value<Numbers>(0);
   REQUIRE(no == Numbers::one);
   REQUIRE(enum_value<Numbers>(1) == Numbers::two);
   REQUIRE(enum_value<Numbers>(2) == Numbers::three);
 
+  REQUIRE(enum_value<Numbers, 0>() == Numbers::one);
+  REQUIRE(enum_value<Numbers, 1>() == Numbers::two);
+  REQUIRE(enum_value<Numbers, 2>() == Numbers::three);
+
   constexpr auto dr = enum_value<Directions>(3);
   REQUIRE(enum_value<Directions&>(0) == Directions::Left);
   REQUIRE(enum_value<const Directions>(1) == Directions::Down);
   REQUIRE(enum_value<Directions>(2) == Directions::Up);
   REQUIRE(dr == Directions::Right);
 
+  REQUIRE(enum_value<Directions, 0>() == Directions::Left);
+  REQUIRE(enum_value<Directions, 1>() == Directions::Down);
+  REQUIRE(enum_value<Directions, 2>() == Directions::Up);
+  REQUIRE(enum_value<Directions, 3>() == Directions::Right);
+
 #if defined(MAGIC_ENUM_ENABLE_NONASCII)
     constexpr auto lang = enum_value<Language>(3);
     REQUIRE(enum_value<Language&>(0) == Language::日本語);
@@ -417,6 +430,10 @@ TEST_CASE("enum_value") {
   REQUIRE(enum_value<number>(0) == number::one);
   REQUIRE(enum_value<number>(1) == number::two);
   REQUIRE(nt == number::three);
+
+  REQUIRE(enum_value<number, 0>() == number::one);
+  REQUIRE(enum_value<number, 1>() == number::two);
+  REQUIRE(enum_value<number, 2>() == number::three);
 }
 
 TEST_CASE("enum_values") {
diff --git a/test/test_flags.cpp b/test/test_flags.cpp
index 5efcb9b..00bb0f6 100644
--- a/test/test_flags.cpp
+++ b/test/test_flags.cpp
@@ -364,18 +364,32 @@ TEST_CASE("enum_value") {
   REQUIRE(enum_value<Color&>(1) == Color::GREEN);
   REQUIRE(enum_value<Color>(2) == Color::BLUE);
 
+  REQUIRE(enum_value<Color, 0>() == Color::RED);
+  REQUIRE(enum_value<Color, 1>() == Color::GREEN);
+  REQUIRE(enum_value<Color, 2>() == Color::BLUE);
+
   constexpr auto no = enum_value<Numbers>(0);
   REQUIRE(no == Numbers::one);
   REQUIRE(enum_value<Numbers>(1) == Numbers::two);
   REQUIRE(enum_value<Numbers>(2) == Numbers::three);
   REQUIRE(enum_value<Numbers>(3) == Numbers::many);
 
+  REQUIRE(enum_value<Numbers, 0>() == Numbers::one);
+  REQUIRE(enum_value<Numbers, 1>() == Numbers::two);
+  REQUIRE(enum_value<Numbers, 2>() == Numbers::three);
+  REQUIRE(enum_value<Numbers, 3>() == Numbers::many);
+
   constexpr auto dr = enum_value<Directions>(3);
   REQUIRE(enum_value<Directions&>(0) == Directions::Left);
   REQUIRE(enum_value<const Directions>(1) == Directions::Down);
   REQUIRE(enum_value<Directions>(2) == Directions::Up);
   REQUIRE(dr == Directions::Right);
 
+  REQUIRE(enum_value<Directions, 0>() == Directions::Left);
+  REQUIRE(enum_value<Directions, 1>() == Directions::Down);
+  REQUIRE(enum_value<Directions, 2>() == Directions::Up);
+  REQUIRE(enum_value<Directions, 3>() == Directions::Right);
+
 #if defined(MAGIC_ENUM_ENABLE_NONASCII)
   constexpr auto lang = enum_value<Language>(3);
   REQUIRE(enum_value<Language&>(0) == Language::日本語);
@@ -389,6 +403,11 @@ TEST_CASE("enum_value") {
   REQUIRE(enum_value<number>(1) == number::two);
   REQUIRE(nt == number::three);
   REQUIRE(enum_value<number>(3) == number::four);
+
+  REQUIRE(enum_value<number, 0>() == number::one);
+  REQUIRE(enum_value<number, 1>() == number::two);
+  REQUIRE(enum_value<number, 2>() == number::three);
+  REQUIRE(enum_value<number, 3>() == number::four);
 }
 
 TEST_CASE("enum_values") {