1 files changed, 42 insertions, 0 deletions
diff --git a/skia/ext/skia_utils_unittest.cc b/skia/ext/skia_utils_unittest.cc
new file mode 100644
index 0000000..3b590b4
--- /dev/null
+++ b/skia/ext/skia_utils_unittest.cc
@@ -0,0 +1,42 @@
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <stdlib.h>
+
+#include "skia/ext/skia_utils.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "third_party/skia/include/core/SkColorPriv.h"
+
+TEST(SkiaUtils, SkColorToHSLRed) {
+  SkColor red = SkColorSetARGB(255, 255, 0, 0);
+  skia::HSL hsl = { 0, 0, 0 };
+  skia::SkColorToHSL(red, hsl);
+  EXPECT_EQ(hsl.h, 0);
+  EXPECT_EQ(hsl.s, 1);
+  EXPECT_EQ(hsl.l, 0.5);
+}
+
+TEST(SkiaUtils, SkColorToHSLGrey) {
+  SkColor red = SkColorSetARGB(255, 128, 128, 128);
+  skia::HSL hsl = { 0, 0, 0 };
+  skia::SkColorToHSL(red, hsl);
+  EXPECT_EQ(hsl.h, 0);
+  EXPECT_EQ(hsl.s, 0);
+  EXPECT_EQ(static_cast<int>(hsl.l * 100),
+            static_cast<int>(0.5 * 100));  // Accurate to two decimal places.
+}
+
+TEST(SkiaUtils, HSLToSkColorWithAlpha) {
+  SkColor red = SkColorSetARGB(128, 255, 0, 0);
+
+  skia::HSL hsl = { 0, 1, 0.5 };
+
+  SkColor result = skia::HSLToSkColor(128, hsl);
+  EXPECT_EQ(SkColorGetA(red), SkColorGetA(result));
+  EXPECT_EQ(SkColorGetR(red), SkColorGetR(result));
+  EXPECT_EQ(SkColorGetG(red), SkColorGetG(result));
+  EXPECT_EQ(SkColorGetB(red), SkColorGetB(result));
+}
+