33         std::span<int> spn{vec};  in TEST()  local
34         EXPECT_EQ(toString(spn), "[1, 3, 5, 7, 9, 11]");  in TEST()
35         EXPECT_EQ(toString(spn.subspan(0, 4)), "[1, 3, 5, 7]");  in TEST()
36         EXPECT_EQ(toString(spn.subspan(3, 3)), "[7, 9, 11]");  in TEST()
37         EXPECT_EQ(toString(spn.subspan(5, 1)), "[11]");  in TEST()
38         EXPECT_EQ(toString(spn.subspan(0, 0)), "[]");  in TEST()
44         std::span<double> spn{vec};  in TEST()  local
45         EXPECT_EQ(toString(spn), "[2.1, -3.9, 21.03]");  in TEST()
51         std::span<int> spn{vec};  in TEST()  local
52         EXPECT_EQ(toString(spn), "[]");  in TEST()
58         std::span<std::string> spn{ary};  in TEST()  local
59         EXPECT_EQ(toString(spn), "[cow, horse, zebra]");  in TEST()
60         EXPECT_EQ(toString(spn.subspan(1, 2)), "[horse, zebra]");  in TEST()