1 files changed, 30 insertions, 0 deletions
diff --git a/tests/HSVRoundTripTest.cpp b/tests/HSVRoundTripTest.cpp
new file mode 100644
index 0000000000..4d25895a9a
--- /dev/null
+++ b/tests/HSVRoundTripTest.cpp
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "Test.h"
+
+#include "SkColor.h"
+
+DEF_TEST(ColorToHSVRoundTrip, reporter) {
+    SkScalar hsv[3];
+    for (U8CPU r = 0; r <= 255; r++) {
+        for (U8CPU g = 0; g <= 255; g++) {
+            for (U8CPU b = 0; b <= 255; b++) {
+                SkColor color = SkColorSetARGBInline(0xFF, r, g, b);
+                SkColorToHSV(color, hsv);
+                SkColor result = SkHSVToColor(0xFF, hsv);
+                if (result != color) {
+                    ERRORF(reporter, "HSV roundtrip mismatch!\n"
+                                     "\toriginal: %X\n"
+                                     "\tHSV: %f, %f, %f\n"
+                                     "\tresult: %X\n",
+                           color, hsv[0], hsv[1], hsv[2], result);
+                }
+            }
+        }
+    }
+}