}{
		// invalid input
		{",,,", []string{}, false},
		{"", []string{}, false},
		{",", []string{}, false},
		{"/", []string{}, false},
		{"text/*,/", []string{}, false},

		// valid input
		{".txt,.log", []string{".txt", ".log"}, true},
		{"text/*,application/json", []string{"text/*", "application/json"}, true},
	}

	for _, testCase := range testCases {
		testCase := testCase
		t.Run(testCase.str, func(t *testing.T) {