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#![allow(dead_code)]
use std::{
future::Ready,
task::{Context, Poll},
};
use http::StatusCode;
use reqwest::{Request, Response};
use tower::Service;
#[derive(Debug, Clone)]
pub struct MockClient {
expectations: Vec<Expectation>,
response: &'static [u8],
}
impl MockClient {
#[must_use]
pub const fn new(response: &'static [u8]) -> Self {
Self {
expectations: Vec::new(),
response,
}
}
#[must_use]
pub fn expect(mut self, expectation: Expectation) -> Self {
self.expectations.push(expectation);
self
}
}
impl Service<Request> for MockClient {
type Response = Response;
type Error = reqwest::Error;
type Future = Ready<Result<Self::Response, Self::Error>>;
fn poll_ready(&mut self, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
Poll::Ready(Ok(()))
}
fn call(&mut self, req: Request) -> Self::Future {
for expectation in &self.expectations {
expectation.validate(&req);
}
let response = http::Response::builder()
.status(StatusCode::OK)
.body(self.response)
.unwrap();
std::future::ready(Ok(response.into()))
}
}
#[derive(Debug, Clone)]
pub enum Expectation {
Method(reqwest::Method),
Path(&'static str),
Query(&'static str, &'static str),
}
impl Expectation {
fn validate(&self, req: &Request) {
match self {
Self::Method(method) => assert_eq!(req.method(), method),
Self::Path(path) => assert_eq!(req.url().path(), *path),
Self::Query(key, value) => {
let query = req
.url()
.query_pairs()
.collect::<std::collections::HashMap<_, _>>();
assert_eq!(query[*key], *value);
}
}
}
}
|
