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use super::ReceiversBuilder;
use std::vec::Vec;
impl ReceiversBuilder {
/// Creates a new `ReceiversBuilder` with default settings (no receivers).
///
/// # Examples
///
/// ```rust,no_run
/// use dbc_rs::ReceiversBuilder;
///
/// let builder = ReceiversBuilder::new();
/// let receivers = builder.build()?;
/// assert_eq!(receivers.len(), 0);
/// # Ok::<(), dbc_rs::Error>(())
/// ```
pub fn new() -> Self {
Self { nodes: Vec::new() }
}
/// Sets the receiver to none (no explicit receivers).
///
/// This clears any previously set nodes. Per DBC spec, this will
/// serialize as `Vector__XXX` (no specific receiver).
///
/// # Examples
///
/// ```rust,no_run
/// use dbc_rs::ReceiversBuilder;
///
/// let receivers = ReceiversBuilder::new()
/// .add_node("TCM") // This will be cleared
/// .none()
/// .build()?;
/// assert_eq!(receivers, dbc_rs::Receivers::None);
/// # Ok::<(), dbc_rs::Error>(())
/// ```
#[must_use = "builder method returns modified builder"]
pub fn none(mut self) -> Self {
self.nodes.clear();
self
}
/// Adds a single receiver node.
///
/// # Arguments
///
/// * `node` - The node name (anything that implements `AsRef<str>`)
///
/// # Examples
///
/// ```rust,no_run
/// use dbc_rs::ReceiversBuilder;
///
/// let receivers = ReceiversBuilder::new()
/// .add_node("TCM")
/// .add_node("BCM")
/// .build()?;
/// assert_eq!(receivers.len(), 2);
/// assert!(receivers.contains("TCM"));
/// # Ok::<(), dbc_rs::Error>(())
/// ```
#[must_use = "builder method returns modified builder"]
pub fn add_node(mut self, node: impl AsRef<str>) -> Self {
let node = node.as_ref().to_string();
self.nodes.push(node);
self
}
/// Adds multiple receiver nodes from an iterator.
///
/// # Arguments
///
/// * `nodes` - An iterator of node names (each item must implement `AsRef<str>`)
///
/// # Examples
///
/// ```rust,no_run
/// use dbc_rs::ReceiversBuilder;
///
/// // From a slice
/// let receivers = ReceiversBuilder::new()
/// .add_nodes(&["TCM", "BCM", "ECM"])
/// .build()?;
/// assert_eq!(receivers.len(), 3);
///
/// // From a vector
/// let node_vec = vec!["Node1", "Node2"];
/// let receivers2 = ReceiversBuilder::new()
/// .add_nodes(node_vec.iter())
/// .build()?;
/// assert_eq!(receivers2.len(), 2);
/// # Ok::<(), dbc_rs::Error>(())
/// ```
#[must_use = "builder method returns modified builder"]
pub fn add_nodes<I, S>(mut self, nodes: I) -> Self
where
I: IntoIterator<Item = S>,
S: AsRef<str>,
{
for node in nodes {
self = self.add_node(node);
}
self
}
/// Clears all receiver nodes and resets to default state (none).
///
/// # Examples
///
/// ```rust,no_run
/// use dbc_rs::ReceiversBuilder;
///
/// let receivers = ReceiversBuilder::new()
/// .add_node("TCM")
/// .add_node("BCM")
/// .clear()
/// .add_node("ECM")
/// .build()?;
/// assert_eq!(receivers.len(), 1);
/// assert!(receivers.contains("ECM"));
/// assert!(!receivers.contains("TCM"));
/// # Ok::<(), dbc_rs::Error>(())
/// ```
#[must_use = "builder method returns modified builder"]
pub fn clear(mut self) -> Self {
self.nodes.clear();
self
}
}
impl Default for ReceiversBuilder {
fn default() -> Self {
Self::new()
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::Receivers;
#[test]
fn test_receivers_builder_none_clears_nodes() {
let receivers =
ReceiversBuilder::new().add_node("ECM").add_node("TCM").none().build().unwrap();
assert_eq!(receivers, Receivers::None);
assert_eq!(receivers.len(), 0);
}
#[test]
fn test_receivers_builder_add_node_after_none() {
let receivers = ReceiversBuilder::new().none().add_node("ECM").build().unwrap();
match &receivers {
Receivers::Nodes(nodes) => assert_eq!(nodes.len(), 1),
_ => panic!("Expected Nodes variant"),
}
}
#[test]
fn test_receivers_builder_add_nodes() {
let receivers = ReceiversBuilder::new().add_nodes(["ECM", "TCM", "BCM"]).build().unwrap();
match &receivers {
Receivers::Nodes(nodes) => assert_eq!(nodes.len(), 3),
_ => panic!("Expected Nodes variant"),
}
assert!(receivers.contains("ECM"));
assert!(receivers.contains("TCM"));
assert!(receivers.contains("BCM"));
}
#[test]
fn test_receivers_builder_add_nodes_iterator() {
let node_vec = ["Node1", "Node2", "Node3"];
let receivers = ReceiversBuilder::new().add_nodes(node_vec.iter()).build().unwrap();
match &receivers {
Receivers::Nodes(nodes) => assert_eq!(nodes.len(), 3),
_ => panic!("Expected Nodes variant"),
}
}
#[test]
fn test_receivers_builder_clear() {
let receivers = ReceiversBuilder::new()
.add_node("ECM")
.add_node("TCM")
.clear()
.add_node("BCM")
.build()
.unwrap();
match &receivers {
Receivers::Nodes(nodes) => {
assert_eq!(nodes.len(), 1);
assert!(receivers.contains("BCM"));
assert!(!receivers.contains("ECM"));
}
_ => panic!("Expected Nodes variant"),
}
}
}