From b34cbb0fa7dcd783245d2d2b2352846579bbb77b Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@gmail.com>
Date: Thu, 2 Jan 2020 12:56:56 +0100
Subject: new_type: implement division

---
 test/src/arithmetic_suite.cpp | 47 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

(limited to 'test')

diff --git a/test/src/arithmetic_suite.cpp b/test/src/arithmetic_suite.cpp
index e77c1dd..7c2b617 100644
--- a/test/src/arithmetic_suite.cpp
+++ b/test/src/arithmetic_suite.cpp
@@ -163,6 +163,45 @@ inline namespace multiplication_tests
 
 }  // namespace multiplication_tests
 
+inline namespace division_tests
+{
+
+  auto a_new__type_not_deriving_arithmetic_is_not_dividable_with_instances_of_itself() -> void
+  {
+    using type_alias = nt::new_type<int, struct tag>;
+    ASSERT(!(nt::impl::is_dividable_v<type_alias>));
+  }
+
+  auto a_new__type_deriving_arithmetic_is_dividable_with_instances_of_itself() -> void
+  {
+    using type_alias = nt::new_type<int, struct tag, deriving(nt::Arithmetic)>;
+    ASSERT(nt::impl::is_dividable_v<type_alias>);
+  }
+
+  template<typename T>
+  auto a_new__type_deriving_arithmetic_is_dividable_with_instances_of_itself_if_the_base_type_is_dividable() -> void
+  {
+    static_assert(nt::impl::is_dividable_v<T>, "Sanity Check");
+    using type_alias = nt::new_type<T, struct tag, deriving(nt::Arithmetic)>;
+    ASSERT_EQUAL(nt::impl::is_dividable_v<T>, nt::impl::is_dividable_v<type_alias>);
+  }
+
+  auto division_of_two_instances_of_a_new__type_deriving_arithmetic_produces_an_instance_of_the_same_new__type() -> void
+  {
+    using type_alias = nt::new_type<int, struct tag, deriving(nt::Arithmetic)>;
+    ASSERT((std::is_same_v<type_alias, decltype(std::declval<type_alias const &>() / std::declval<type_alias const &>())>));
+  }
+
+  auto division_of_two_instances_of_a_new__type_deriving_arithmetic_produces_the_correct_value_with_respect_to_the_base_type() -> void
+  {
+    using type_alias = nt::new_type<int, struct tag, deriving(nt::Arithmetic)>;
+    auto lhs = type_alias{24};
+    auto rhs = type_alias{2};
+    ASSERT_EQUAL(24 / 2, (lhs / rhs).decay());
+  }
+
+}  // namespace division_tests
+
 auto arithmetic_suite() -> std::pair<cute::suite, std::string>
 {
   return {
@@ -190,6 +229,14 @@ auto arithmetic_suite() -> std::pair<cute::suite, std::string>
           KAWAII(a_new__type_deriving_arithmetic_is_multipliable_with_instances_of_itself_if_the_base_type_is_multipliable<multipliable_type>),
           KAWAII(multiplication_of_two_instances_of_a_new__type_deriving_arithmetic_produces_an_instance_of_the_same_new__type),
           KAWAII(multiplication_of_two_instances_of_a_new__type_deriving_arithmetic_produces_the_correct_value_with_respect_to_the_base_type),
+
+          /// Division Tests
+          KAWAII(a_new__type_not_deriving_arithmetic_is_not_dividable_with_instances_of_itself),
+          KAWAII(a_new__type_deriving_arithmetic_is_dividable_with_instances_of_itself),
+          KAWAII(a_new__type_deriving_arithmetic_is_dividable_with_instances_of_itself_if_the_base_type_is_dividable<int>),
+          KAWAII(a_new__type_deriving_arithmetic_is_dividable_with_instances_of_itself_if_the_base_type_is_dividable<dividable_type>),
+          KAWAII(division_of_two_instances_of_a_new__type_deriving_arithmetic_produces_an_instance_of_the_same_new__type),
+          KAWAII(division_of_two_instances_of_a_new__type_deriving_arithmetic_produces_the_correct_value_with_respect_to_the_base_type),
       },
       "Arithmetic Operators Tests"};
 }
\ No newline at end of file
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