1 files changed, 77 insertions, 0 deletions
diff --git a/image_utils_unittest.cc b/image_utils_unittest.cc
new file mode 100644
index 0000000..7cae9d2
--- /dev/null
+++ b/image_utils_unittest.cc
@@ -0,0 +1,77 @@
+// Copyright 2017 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 "components/zucchini/image_utils.h"
+
+#include "base/logging.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace zucchini {
+
+TEST(ImageUtilsTest, Bitness) {
+  EXPECT_EQ(4U, WidthOf(kBit32));
+  EXPECT_EQ(8U, WidthOf(kBit64));
+}
+
+TEST(ImageUtilsTest, IsMarked) {
+  EXPECT_FALSE(IsMarked(0x00000000));
+  EXPECT_TRUE(IsMarked(0x80000000));
+
+  EXPECT_FALSE(IsMarked(0x00000001));
+  EXPECT_TRUE(IsMarked(0x80000001));
+
+  EXPECT_FALSE(IsMarked(0x70000000));
+  EXPECT_TRUE(IsMarked(0xF0000000));
+
+  EXPECT_FALSE(IsMarked(0x7FFFFFFF));
+  EXPECT_TRUE(IsMarked(0xFFFFFFFF));
+
+  EXPECT_FALSE(IsMarked(0x70000000));
+  EXPECT_TRUE(IsMarked(0xC0000000));
+
+  EXPECT_FALSE(IsMarked(0x0000BEEF));
+  EXPECT_TRUE(IsMarked(0x8000BEEF));
+}
+
+TEST(ImageUtilsTest, MarkIndex) {
+  EXPECT_EQ(offset_t(0x80000000), MarkIndex(0x00000000));
+  EXPECT_EQ(offset_t(0x80000000), MarkIndex(0x80000000));
+
+  EXPECT_EQ(offset_t(0x80000001), MarkIndex(0x00000001));
+  EXPECT_EQ(offset_t(0x80000001), MarkIndex(0x80000001));
+
+  EXPECT_EQ(offset_t(0xF0000000), MarkIndex(0x70000000));
+  EXPECT_EQ(offset_t(0xF0000000), MarkIndex(0xF0000000));
+
+  EXPECT_EQ(offset_t(0xFFFFFFFF), MarkIndex(0x7FFFFFFF));
+  EXPECT_EQ(offset_t(0xFFFFFFFF), MarkIndex(0xFFFFFFFF));
+
+  EXPECT_EQ(offset_t(0xC0000000), MarkIndex(0x40000000));
+  EXPECT_EQ(offset_t(0xC0000000), MarkIndex(0xC0000000));
+
+  EXPECT_EQ(offset_t(0x8000BEEF), MarkIndex(0x0000BEEF));
+  EXPECT_EQ(offset_t(0x8000BEEF), MarkIndex(0x8000BEEF));
+}
+
+TEST(ImageUtilsTest, UnmarkIndex) {
+  EXPECT_EQ(offset_t(0x00000000), UnmarkIndex(0x00000000));
+  EXPECT_EQ(offset_t(0x00000000), UnmarkIndex(0x80000000));
+
+  EXPECT_EQ(offset_t(0x00000001), UnmarkIndex(0x00000001));
+  EXPECT_EQ(offset_t(0x00000001), UnmarkIndex(0x80000001));
+
+  EXPECT_EQ(offset_t(0x70000000), UnmarkIndex(0x70000000));
+  EXPECT_EQ(offset_t(0x70000000), UnmarkIndex(0xF0000000));
+
+  EXPECT_EQ(offset_t(0x7FFFFFFF), UnmarkIndex(0x7FFFFFFF));
+  EXPECT_EQ(offset_t(0x7FFFFFFF), UnmarkIndex(0xFFFFFFFF));
+
+  EXPECT_EQ(offset_t(0x40000000), UnmarkIndex(0x40000000));
+  EXPECT_EQ(offset_t(0x40000000), UnmarkIndex(0xC0000000));
+
+  EXPECT_EQ(offset_t(0x0000BEEF), UnmarkIndex(0x0000BEEF));
+  EXPECT_EQ(offset_t(0x0000BEEF), UnmarkIndex(0x8000BEEF));
+}
+
+}  // namespace zucchini