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#[macro_use]
extern crate derive_builder;
use std::convert::TryFrom;
use std::net::{AddrParseError, IpAddr};
use std::str::FromStr;
use std::string::ToString;
#[derive(Debug, Clone, PartialEq)]
pub struct MyAddr(IpAddr);
impl From<IpAddr> for MyAddr {
fn from(v: IpAddr) -> Self {
MyAddr(v)
}
}
impl<'a> TryFrom<&'a str> for MyAddr {
type Error = AddrParseError;
fn try_from(v: &str) -> Result<Self, Self::Error> {
Ok(MyAddr(v.parse()?))
}
}
#[derive(Debug, PartialEq, Builder)]
#[builder(try_setter, setter(into))]
struct Lorem {
pub source: MyAddr,
pub dest: MyAddr,
}
#[derive(Debug, PartialEq, Builder)]
#[builder(try_setter, setter(into, prefix = "set"))]
struct Ipsum {
pub source: MyAddr,
}
fn exact_helper() -> Result<Lorem, LoremBuilderError> {
LoremBuilder::default()
.source(IpAddr::from_str("1.2.3.4").unwrap())
.dest(IpAddr::from_str("0.0.0.0").unwrap())
.build()
}
fn try_helper() -> Result<Lorem, LoremBuilderError> {
LoremBuilder::default()
.try_source("1.2.3.4")
.map_err(|e| e.to_string())?
.try_dest("0.0.0.0")
.map_err(|e| e.to_string())?
.build()
}
#[test]
fn infallible_set() {
let _ = LoremBuilder::default()
.source(IpAddr::from_str("1.2.3.4").unwrap())
.dest(IpAddr::from_str("0.0.0.0").unwrap())
.build();
}
#[test]
fn fallible_set() {
let mut builder = LoremBuilder::default();
let try_result = builder.try_source("1.2.3.4");
let built = try_result
.expect("Passed well-formed address")
.dest(IpAddr::from_str("0.0.0.0").unwrap())
.build()
.unwrap();
assert_eq!(built, exact_helper().unwrap());
}
#[test]
fn with_helper() {
assert_eq!(exact_helper().unwrap(), try_helper().unwrap());
}
#[test]
fn renamed() {
IpsumBuilder::default()
.try_set_source("0.0.0.0")
.unwrap()
.build()
.expect("All fields were provided");
}
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