1 files changed, 98 insertions, 0 deletions
diff --git a/gfx/tests/gtest/TestPoint.cpp b/gfx/tests/gtest/TestPoint.cpp
new file mode 100644
index 0000000000..9a77c8908d
--- /dev/null
+++ b/gfx/tests/gtest/TestPoint.cpp
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+#include <cmath>
+
+#include "BasePoint.h"
+#include "Units.h"
+#include "Point.h"
+
+using mozilla::CSSCoord;
+using mozilla::CSSIntCoord;
+using mozilla::CSSIntPoint;
+using mozilla::CSSPixel;
+using mozilla::gfx::CoordTyped;
+using mozilla::gfx::FloatType_t;
+using mozilla::gfx::IntCoordTyped;
+using mozilla::gfx::IntPointTyped;
+using mozilla::gfx::PointTyped;
+using mozilla::gfx::UnknownUnits;
+
+TEST(Gfx, TestCSSIntPointLength)
+{
+  CSSIntPoint testPnt(1, 1);
+  float res = testPnt.Length();
+
+  float epsilon = 0.001f;
+  constexpr float sqrtOfTwo = 1.414;
+  float diff = std::abs(res - sqrtOfTwo);
+  EXPECT_LT(diff, epsilon);
+}
+
+TEST(Gfx, TestPointAddition)
+{
+  PointTyped<CSSPixel> a, b;
+  a.x = 2;
+  a.y = 2;
+  b.x = 5;
+  b.y = -5;
+
+  a += b;
+
+  EXPECT_EQ(a.x, 7.f);
+  EXPECT_EQ(a.y, -3.f);
+}
+
+TEST(Gfx, TestPointSubtraction)
+{
+  PointTyped<CSSPixel> a, b;
+  a.x = 2;
+  a.y = 2;
+  b.x = 5;
+  b.y = -5;
+
+  a -= b;
+
+  EXPECT_EQ(a.x, -3.f);
+  EXPECT_EQ(a.y, 7.f);
+}
+
+TEST(Gfx, TestPointRoundToMultiple)
+{
+  const int32_t roundTo = 2;
+
+  IntPointTyped<CSSPixel> p(478, -394);
+  EXPECT_EQ(p.RoundedToMultiple(roundTo), p);
+
+  IntPointTyped<CSSPixel> p2(478, 393);
+  EXPECT_NE(p2.RoundedToMultiple(roundTo), p2);
+}
+
+TEST(Gfx, TestFloatTypeMeta)
+{
+  // TODO: Should int64_t's FloatType be double instead?
+  static_assert(std::is_same_v<FloatType_t<int64_t>, float>,
+                "The FloatType of an integer type should be float");
+  static_assert(std::is_same_v<FloatType_t<int32_t>, float>,
+                "The FloatType of an integer type should be float");
+  static_assert(
+      std::is_same_v<FloatType_t<float>, float>,
+      "The FloatType of a floating-point type should be the given type");
+  static_assert(
+      std::is_same_v<FloatType_t<double>, double>,
+      "The FloatType of a floating-point type should be the given type");
+  static_assert(
+      std::is_same_v<FloatType_t<IntCoordTyped<UnknownUnits, int32_t>>,
+                     CoordTyped<UnknownUnits, float>>,
+      "The FloatType of an IntCoordTyped<Units, Rep> should be "
+      "CoordTyped<Units, float>");
+  static_assert(
+      std::is_same_v<FloatType_t<CoordTyped<UnknownUnits, long double>>,
+                     CoordTyped<UnknownUnits, long double>>,
+      "The FloatType of a CoordTyped<Units, Rep> should be "
+      "CoordTyped<Units, Rep>");
+}