Catch2 support added (resolves #8)

test/unit_test/runtime/math_test.cpp

@@ -0,0 +1,85 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2018 Mateusz Pusz
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#include "units/math.h"
+#include "print_helpers.h"
+#include "units/dimensions/area.h"
+#include <catch2/catch.hpp>
+
+using namespace units;
+
+// classical
+
+TEST_CASE("pow<N>() on quantity changes the value and the dimension accordingly", "[math][pow]")
+{
+  //  CHECK(pow<0>(2m) == 2);
+  CHECK(pow<1>(2m) == 2m);
+  CHECK(pow<2>(2m) == 4sq_m);
+}
+
+TEST_CASE("sqrt() on quantity changes the value and the dimension accordingly", "[math][sqrt]")
+{
+  REQUIRE(sqrt(4sq_m) == 2m);
+}
+
+// BDD style
+
+SCENARIO("quantities should work with pow<N>()", "[math][pow]")
+{
+  GIVEN("A quantity q") {
+    auto q = 2m;
+
+    REQUIRE(q.count() == 2);
+
+    WHEN("pow<1>(q) is called") {
+      auto res = pow<1>(q);
+
+      THEN("the same quantity is received") {
+        REQUIRE(res == q);
+      }
+    }
+    WHEN("pow<2>(q) is called") {
+      auto res = pow<2>(q);
+
+      THEN("both the value and dimension is raised to the exponent 2") {
+        REQUIRE(res == 4sq_m);
+      }
+    }
+  }
+}
+
+SCENARIO("quantities should work with sqrt()", "[math][sqrt]")
+{
+  GIVEN("A quantity q") {
+    auto q = 4sq_m;
+
+    REQUIRE(q.count() == 4);
+
+    WHEN("sqrt(q) is called") {
+      auto res = sqrt(q);
+
+      THEN("both the value and dimension are square rooted") {
+        REQUIRE(res == 2m);
+      }
+    }
+  }
+}