550   constexpr Optional<int> a(base::nullopt);  in TEST()
791     a = base::nullopt;  in TEST()
792     b = base::nullopt;  in TEST()
799     a = base::nullopt;  in TEST()
800     b = base::nullopt;  in TEST()
807     a = base::nullopt;  in TEST()
808     b = base::nullopt;  in TEST()
1040     a = base::nullopt;  in TEST()
1063     a = base::nullopt;  in TEST()
1074     a = base::nullopt;  in TEST()
1438     EXPECT_TRUE(opt == base::nullopt);  in TEST()
1442     EXPECT_FALSE(opt == base::nullopt);  in TEST()
1449     EXPECT_TRUE(base::nullopt == opt);  in TEST()
1453     EXPECT_FALSE(base::nullopt == opt);  in TEST()
1460     EXPECT_FALSE(opt != base::nullopt);  in TEST()
1464     EXPECT_TRUE(opt != base::nullopt);  in TEST()
1471     EXPECT_FALSE(base::nullopt != opt);  in TEST()
1475     EXPECT_TRUE(base::nullopt != opt);  in TEST()
1482     EXPECT_FALSE(opt < base::nullopt);  in TEST()
1486     EXPECT_FALSE(opt < base::nullopt);  in TEST()
1493     EXPECT_FALSE(base::nullopt < opt);  in TEST()
1497     EXPECT_TRUE(base::nullopt < opt);  in TEST()
1504     EXPECT_TRUE(opt <= base::nullopt);  in TEST()
1508     EXPECT_FALSE(opt <= base::nullopt);  in TEST()
1515     EXPECT_TRUE(base::nullopt <= opt);  in TEST()
1519     EXPECT_TRUE(base::nullopt <= opt);  in TEST()
1526     EXPECT_FALSE(opt > base::nullopt);  in TEST()
1530     EXPECT_TRUE(opt > base::nullopt);  in TEST()
1537     EXPECT_FALSE(base::nullopt > opt);  in TEST()
1541     EXPECT_FALSE(base::nullopt > opt);  in TEST()
1548     EXPECT_TRUE(opt >= base::nullopt);  in TEST()
1552     EXPECT_TRUE(opt >= base::nullopt);  in TEST()
1559     EXPECT_TRUE(base::nullopt >= opt);  in TEST()
1563     EXPECT_FALSE(base::nullopt >= opt);  in TEST()
1881     b = base::nullopt;  in TEST()
1888     b = base::nullopt;  in TEST()
1895     b = base::nullopt;  in TEST()
2057   a = nullopt;  in TEST()