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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at https://mozilla.org/MPL/2.0/.
use crate::ErrorType;
/// A description for the [`StringListMetric`](crate::metrics::StringListMetric) type.
///
/// When changing this trait, make sure all the operations are
/// implemented in the related type in `../metrics/`.
pub trait StringList {
/// Adds a new string to the list.
///
/// # Arguments
///
/// * `value` - The string to add.
///
/// ## Notes
///
/// Truncates the value if it is longer than `MAX_STRING_LENGTH` bytes and logs an error.
fn add<S: Into<String>>(&self, value: S);
/// Sets to a specific list of strings.
///
/// # Arguments
///
/// * `value` - The list of string to set the metric to.
///
/// ## Notes
///
/// If passed an empty list, records an error and returns.
/// Truncates the list if it is longer than `MAX_LIST_LENGTH` and logs an error.
/// Truncates any value in the list if it is longer than `MAX_STRING_LENGTH` and logs an error.
fn set(&self, value: Vec<String>);
/// **Exported for test purposes.**
///
/// Gets the currently-stored values.
///
/// This doesn't clear the stored value.
///
/// # Arguments
///
/// * `ping_name` - represents the optional name of the ping to retrieve the
/// metric for. Defaults to the first value in `send_in_pings`.
fn test_get_value<'a, S: Into<Option<&'a str>>>(&self, ping_name: S) -> Option<Vec<String>>;
/// **Exported for test purposes.**
///
/// Gets the number of recorded errors for the given error type.
///
/// # Arguments
///
/// * `error` - The type of error
/// * `ping_name` - represents the optional name of the ping to retrieve the
/// metric for. Defaults to the first value in `send_in_pings`.
///
/// # Returns
///
/// The number of errors recorded.
fn test_get_num_recorded_errors<'a, S: Into<Option<&'a str>>>(
&self,
error: ErrorType,
ping_name: S,
) -> i32;
}