Experimental alignment layout manager using a property on the views

base/set_template_unittest.cc

+// Copyright (c) 2016 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 "base/set_template.h"
+
+#include "build/build_config.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+
+typedef PlatformTest SetTemplateTest;
+
+namespace base {
+
+enum class CharElements {
+  One,
+  Two,
+  Three,
+  Four,
+  Five,
+  Six,
+};
+
+enum class ShortElements {
+  One,
+  Two,
+  Three,
+  Four,
+  Five,
+  Six,
+  Seven,
+  Eight,
+  Nine,
+  Ten,
+  Eleven,
+  Twelve,
+};
+
+enum class IntElements {
+  One,
+  Two,
+  Three,
+  Four,
+  Five,
+  Six,
+  Seven,
+  Eight,
+  Nine,
+  Ten,
+  Eleven,
+  Twelve,
+  Thirteen,
+  Fourteen,
+  Fifteen,
+  Sixteen,
+  Seventeen,
+  Eighteen,
+  Nineteen,
+  Twenty,
+  TwentyOne,
+  TwentyTwo,
+  TwentyThree,
+  TwentyFour,
+  TwentyFive,
+  TwentySix,
+  TwentySeven,
+  TwentyEight,
+  TwentyNine,
+  Thirty,
+  ThirtyOne,
+  ThirtyTwo,
+};
+
+using CharSet = SetOf<CharElements, CharElements::Six>;
+using ShortSet = SetOf<ShortElements, ShortElements::Twelve>;
+using IntSet = SetOf<IntElements, IntElements::ThirtyTwo>;
+
+TEST_F(SetTemplateTest, TestCharSet) {
+  CharSet charSet1({CharElements::Two, CharElements::Five});
+  CharSet charSet2;
+
+  EXPECT_TRUE(sizeof(charSet1) == sizeof(unsigned char));
+  EXPECT_EQ(charSet1.data, 0x12);
+  EXPECT_EQ(charSet2.data, 0);
+  charSet1.Include(CharElements::One);
+  EXPECT_EQ(charSet1.data, 0x13);
+  charSet1.Exclude(CharElements::Five);
+  EXPECT_EQ(charSet1.data, 0x03);
+  charSet2 *= charSet1;
+  EXPECT_EQ(charSet2.data, 0);
+  charSet2 += charSet1;
+  EXPECT_TRUE(charSet1 == charSet2);
+  charSet2.Include({CharElements::Six, CharElements::Four});
+  EXPECT_EQ(charSet2.data, 0x2B);
+  charSet2 -= charSet1;
+  EXPECT_EQ(charSet2.data, 0x28);
+  charSet2.data |= 0x80;
+  // Test to ensure operator== only checks bits corresponding to the enum
+  EXPECT_TRUE(charSet2 == CharSet({CharElements::Four, CharElements::Six}));
+  EXPECT_FALSE(charSet2.Contains(CharElements::One));
+  EXPECT_TRUE(charSet2.ContainsAll({CharElements::Four, CharElements::Six}));
+  EXPECT_TRUE(charSet2.ContainsSome({CharElements::Four,
+                                     CharElements::Six,
+                                     CharElements::One}));
+  EXPECT_FALSE(charSet2.ContainsSome({CharElements::Two}));
+  EXPECT_FALSE(charSet1[CharElements::Six]);
+  charSet1[CharElements::Six] = true;
+  EXPECT_TRUE(charSet1[CharElements::Six]);
+}
+
+TEST_F(SetTemplateTest, TestShortSet) {
+  ShortSet shortSet1;
+  shortSet1.Include({ShortElements::Five, ShortElements::Seven,
+      ShortElements::Nine, ShortElements::Eleven});
+  ShortSet shortSet2;
+
+  EXPECT_TRUE(sizeof(shortSet1) == sizeof(unsigned short));
+  EXPECT_EQ(shortSet1.data, 0x0550);
+  EXPECT_EQ(shortSet2.data, 0);
+  shortSet1.Include(ShortElements::One).Include(ShortElements::Three);
+  EXPECT_EQ(shortSet1.data, 0x0555);
+  shortSet2 = shortSet1;
+  EXPECT_EQ(shortSet2.data, shortSet1.data);
+  shortSet2.Exclude(ShortElements::Eleven).Exclude(ShortElements::Nine);
+  EXPECT_EQ(shortSet2.data, 0x0055);
+  EXPECT_FALSE(shortSet1[ShortElements::Eight]);
+  shortSet1[ShortElements::Eight] = true;
+  EXPECT_TRUE(shortSet1[ShortElements::Eight]);
+  shortSet1[ShortElements::Eight] = false;
+  EXPECT_FALSE(shortSet1[ShortElements::Eight]);
+}
+
+TEST_F(SetTemplateTest, TestIntSet) {
+  IntSet intSet1 = {IntElements::Two, IntElements::Four, IntElements::Six,
+      IntElements::Eight, IntElements::TwentyEight, IntElements::Thirty,
+      IntElements::ThirtyTwo};
+  IntSet intSet2;
+
+  EXPECT_EQ(sizeof(intSet1), sizeof(unsigned int));
+  EXPECT_EQ(intSet1.data, static_cast<unsigned int>(0xA80000AA));
+  EXPECT_EQ(intSet2.data, static_cast<unsigned int>(0));
+  intSet1.Include(IntElements::TwentySix)
+         .Include(IntElements::TwentyFour)
+         .Include(IntElements::TwentyTwo)
+         .Include(IntElements::Twenty);
+  EXPECT_EQ(intSet1.data, static_cast<unsigned int>(0xAAA800AA));
+  intSet2 = intSet1;
+  EXPECT_EQ(intSet1.data, intSet2.data);
+  intSet2 -= intSet1;
+  EXPECT_EQ(intSet2.data, static_cast<unsigned int>(0));
+  intSet1 -= intSet2;
+  EXPECT_EQ(intSet1.data, static_cast<unsigned int>(0xAAA800AA));
+  intSet1.Exclude(IntElements::ThirtyTwo)
+         .Exclude(IntElements::Thirty);
+  EXPECT_EQ(intSet1.data, static_cast<unsigned int>(0x0AA800AA));
+  EXPECT_TRUE(intSet1[IntElements::TwentySix]);
+  intSet1[IntElements::TwentySeven] = true;
+  EXPECT_TRUE(intSet1.Contains(IntElements::TwentySeven));
+}
+
+} // namespace base