{in: testGroupFile, user: "user1111", gid: "1111", gids: []string{"1111", "1000"}},
	{in: testGroupFile, user: "user1000", gid: "1000", gids: []string{"1000"}},
	{in: testGroupFile, user: "user7500", gid: "7500", gids: []string{"1000", "7500"}},
	{in: testGroupFile, user: "no-such-user", gid: "2345", gids: []string{"2345"}},

			for range b.N {
				_ = sets.New(items1000...)
			}
		})
		b.Run("Contains/1000", func(b *testing.B) {
			for range b.N {
				// Check an item in and out of the set
				_ = set1000.Contains("456")
				_ = set1000.Contains("abc")
			}
		})
		b.Run("Contains/100", func(b *testing.B) {
			for range b.N {
				_ = set100.Contains("45")
				_ = set100.Contains("abc")
			}
		})