566   constexpr Optional<int> a(base::nullopt);  in TEST()
807     a = base::nullopt;  in TEST()
808     b = base::nullopt;  in TEST()
815     a = base::nullopt;  in TEST()
816     b = base::nullopt;  in TEST()
823     a = base::nullopt;  in TEST()
824     b = base::nullopt;  in TEST()
1054     a = base::nullopt;  in TEST()
1077     a = base::nullopt;  in TEST()
1088     a = base::nullopt;  in TEST()
1452     EXPECT_TRUE(opt == base::nullopt);  in TEST()
1456     EXPECT_FALSE(opt == base::nullopt);  in TEST()
1463     EXPECT_TRUE(base::nullopt == opt);  in TEST()
1467     EXPECT_FALSE(base::nullopt == opt);  in TEST()
1474     EXPECT_FALSE(opt != base::nullopt);  in TEST()
1478     EXPECT_TRUE(opt != base::nullopt);  in TEST()
1485     EXPECT_FALSE(base::nullopt != opt);  in TEST()
1489     EXPECT_TRUE(base::nullopt != opt);  in TEST()
1496     EXPECT_FALSE(opt < base::nullopt);  in TEST()
1500     EXPECT_FALSE(opt < base::nullopt);  in TEST()
1507     EXPECT_FALSE(base::nullopt < opt);  in TEST()
1511     EXPECT_TRUE(base::nullopt < opt);  in TEST()
1518     EXPECT_TRUE(opt <= base::nullopt);  in TEST()
1522     EXPECT_FALSE(opt <= base::nullopt);  in TEST()
1529     EXPECT_TRUE(base::nullopt <= opt);  in TEST()
1533     EXPECT_TRUE(base::nullopt <= opt);  in TEST()
1540     EXPECT_FALSE(opt > base::nullopt);  in TEST()
1544     EXPECT_TRUE(opt > base::nullopt);  in TEST()
1551     EXPECT_FALSE(base::nullopt > opt);  in TEST()
1555     EXPECT_FALSE(base::nullopt > opt);  in TEST()
1562     EXPECT_TRUE(opt >= base::nullopt);  in TEST()
1566     EXPECT_TRUE(opt >= base::nullopt);  in TEST()
1573     EXPECT_TRUE(base::nullopt >= opt);  in TEST()
1577     EXPECT_FALSE(base::nullopt >= opt);  in TEST()
1895     b = base::nullopt;  in TEST()
1902     b = base::nullopt;  in TEST()
1909     b = base::nullopt;  in TEST()
2071   a = nullopt;  in TEST()