#include "reflect/reflect.hpp"

#include <gmock/gmock.h>

struct example {
  int a;
  int b;
};

CREATE_REFLECTION(example, (a), (b, "c"));

using testing::Eq;
using testing::NotNull;

TEST(ReflectionTest, BindsParameterByName) {
  EXPECT_TRUE(reflection<example>::exists<int>("a"));
}

TEST(ReflectionTest, CanRenameParameter) {
  EXPECT_FALSE(reflection<example>::exists<int>("b"));
  EXPECT_TRUE(reflection<example>::exists<int>("c"));
}

TEST(ReflectionTest, CanAccessMember) {
  auto p = reflection<example>::get_pointer<int>("a");
  EXPECT_THAT(p, NotNull());
  EXPECT_THAT(p, Eq(&example::a));

  example ex = { 5, 6 };
  EXPECT_THAT(&(ex.*p), Eq(&ex.a));
  EXPECT_THAT(ex.*p, Eq(5));
}

TEST(ReflectionTest, CanGetNameFromMemPtr) {
  EXPECT_THAT(reflection<example>::name(&example::a), Eq("a"));
  EXPECT_THAT(reflection<example>::name(&example::b), Eq("c"));
}

TEST(ReflectionTest, CanGetNameFromThis) {
  example ex = { 5, 6 };
  EXPECT_THAT(reflection<example>::name(ex, ex.a), Eq("a"));
  EXPECT_THAT(reflection<example>::name(ex, ex.b), Eq("c"));
}

TEST(ReflectionTest, NameForMissingIsEmpty) {
  example ex = { 5, 6 };
  EXPECT_THAT(reflection<example>::name(ex, 5), Eq(""));
}