From 758c05ea15064dab6a89118fcdf7bde32399a880 Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Mon, 23 Dec 2019 13:22:37 +0100
Subject: [PATCH] quantity_cast fmt tests added

---
 test/unit_test/runtime/fmt_test.cpp | 51 +++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/test/unit_test/runtime/fmt_test.cpp b/test/unit_test/runtime/fmt_test.cpp
index c4c3aa03..ccaf10dd 100644
--- a/test/unit_test/runtime/fmt_test.cpp
+++ b/test/unit_test/runtime/fmt_test.cpp
@@ -837,6 +837,57 @@ TEST_CASE("precision specification for integral representation should throw", "[
 // rather than their parts
 
 
+TEST_CASE("quantity_cast", "[text][ostream]")
+{
+  std::stringstream stream;
+
+  SECTION("int to double representation")
+  {
+    const auto q = 121km / 2h;
+
+    SECTION("original")
+    {
+      stream << q;
+      CHECK(stream.str() == "60 km/h");
+    }
+
+    SECTION("int")
+    {
+      stream << quantity_cast<int>(q);
+      CHECK(stream.str() == "60 km/h");
+    }
+
+    SECTION("double")
+    {
+      stream << quantity_cast<double>(q);
+      CHECK(stream.str() == "60 km/h");
+    }
+  }
+
+  SECTION("double to int representation")
+  {
+    const auto q = 121.km / 2h;
+
+    SECTION("original")
+    {
+      stream << q;
+      CHECK(stream.str() == "60.5 km/h");
+    }
+
+    SECTION("int")
+    {
+      stream << quantity_cast<int>(q);
+      CHECK(stream.str() == "60 km/h");
+    }
+
+    SECTION("double")
+    {
+      stream << quantity_cast<double>(q);
+      CHECK(stream.str() == "60.5 km/h");
+    }
+  }
+}
+
 // Giving a precision specification
 // in the chrono-format-spec is valid only for std::chrono::duration types where the representation type Rep
 // is a floating-point type. For all other Rep types, a format_error shall be thrown if the chrono-format-spec