expectedFields: map[string]struct{}{
				`connection_string="host=localhost port=2832"`: {},
				`comment="really long comment"`:                {},
			},
		},
		// Incorrect delimiter, expected fields should be empty.
		{
			input:          `comment:"really long comment" connection_string:"host=localhost port=2832"`,
			keys:           []string{"connection_string", "comment"},