feat(net)!: net api: net.{get,post,etc..}(url) alternative to net.send(request)

Cargo.toml

@@ -14,6 +14,7 @@ unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tarpaulin_include)'] }
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+bytes = "1.8"
 derive_more = { version = "1.0", features = [ 
   "constructor",
   "display", 

examples/get.rs

@@ -61,10 +61,6 @@ async fn download_and_save_to_file(
 ) -> kxio::Result<()> {
     println!("fetching: {url}");
 
-    // Uses the network abstraction to create a perfectly normal `reqwest::ResponseBuilder`.
-    // `kxio::net::RequestBuilder` is an alias.
-    let request: kxio::net::RequestBuilder = net.client().get(url);
-
     // Rather than calling `.build().send()?` on the request, pass it to the `net`
     // This allows the `net` to either make the network request as normal, or, if we are
     // under test, to handle the request as the test dictates.
@@ -72,7 +68,13 @@ async fn download_and_save_to_file(
     // a real network request being made, even under test conditions. Only ever use the
     // `net.send(...)` function to keep your code testable.
     // `kxio::net::Response` is an alias for `reqwest::Response`.
-    let response: kxio::net::Response = net.send(request).await?;
+    let response: kxio::net::Response = net.get(url).header("key", "value").send().await?;
+    // Other options:
+    //   Uses the network abstraction to create a perfectly normal `reqwest::ResponseBuilder`.
+    //   `kxio::net::RequestBuilder` is an alias.
+    // let response = net.send(net.client().get(url)).await?;
+    //
+    // let response = net.post(url).body("{}").send().await?;
 
     let body = response.text().await?;
     println!("fetched {} bytes", body.bytes().len());
@@ -102,6 +104,8 @@ fn delete_file(file_path: &Path, fs: &kxio::fs::FileSystem) -> kxio::Result<()>
 
 #[cfg(test)]
 mod tests {
+    use http::StatusCode;
+
     use super::*;
 
     // This test demonstrates how to use the `kxio` to test your program.
@@ -116,8 +120,12 @@ mod tests {
         let url = "http://localhost:8080";
 
         // declare what response should be made for a given request
-        let response = mock_net.response().body("contents").expect("response body");
+        mock_net
-        mock_net.on().get(url).respond(response);
+            .on()
+            .get(url)
+            .respond(StatusCode::OK)
+            .body("contents")
+            .expect("valid mock");
 
         // Create a temporary directory that will be deleted with `fs` goes out of scope
         let fs = kxio::fs::temp().expect("temp fs");

src/fs/temp.rs

@@ -21,6 +21,11 @@ impl TempFileSystem {
             _temp_dir: temp_dir,
         })
     }
+
+    /// Create a clone of the wrapped [FileSystem].
+    pub fn as_real(&self) -> FileSystem {
+        self.real.clone()
+    }
 }
 impl std::ops::Deref for TempFileSystem {
     type Target = FileSystem;

src/net/mod.rs

@@ -79,15 +79,14 @@
 //!
 //! ```rust
 //! use kxio::net;
+//! use kxio::net::StatusCode;
 //! # #[tokio::main]
 //! # async fn main() -> net::Result<()> {
 //! # let mock_net = net::mock();
-//! mock_net.on()
+//! mock_net.on().get("https://example.com")
-//!     .get("https://example.com")
+//!     .respond(StatusCode::OK).body("");
-//!     .respond(mock_net.response().status(200).body("")?);
+//! mock_net.on().get("https://example.com/foo")
-//! mock_net.on()
+//!     .respond(StatusCode::INTERNAL_SERVER_ERROR).body("Mocked response");
-//!     .get("https://example.com/foo")
-//!     .respond(mock_net.response().status(500).body("Mocked response")?);
 //! # mock_net.reset();
 //! # Ok(())
 //! # }
@@ -151,7 +150,9 @@ pub use system::{MockNet, Net};
 
 pub use http::HeaderMap;
 pub use http::Method;
+pub use http::StatusCode;
 pub use reqwest::Client;
+pub use reqwest::Error as RequestError;
 pub use reqwest::Request;
 pub use reqwest::RequestBuilder;
 pub use reqwest::Response;

src/net/result.rs

@@ -3,6 +3,8 @@ use derive_more::derive::From;
 
 use crate::net::Request;
 
+use super::system::MockError;
+
 /// The Errors that may occur within [kxio::net][crate::net].
 #[derive(Debug, From, derive_more::Display)]
 pub enum Error {
@@ -32,6 +34,14 @@ pub enum Error {
 
     /// Attempted to extract a [MockNet][super::MockNet] from a [Net][super::Net] that does not contain one.
     NetIsNotAMock,
+
+    InvalidMock(MockError),
+
+    /// The returned response is has an error status code (i.e. 4xx or 5xx)
+    #[display("response error: {}", response.status())]
+    ResponseError {
+        response: reqwest::Response,
+    },
 }
 impl std::error::Error for Error {}
 impl Clone for Error {

src/net/system.rs

@@ -1,14 +1,23 @@
 //
 
-use std::{cell::RefCell, ops::Deref, rc::Rc, sync::Arc};
+use std::{
+    cell::RefCell,
+    collections::HashMap,
+    fmt::{Debug, Display},
+    marker::PhantomData,
+    ops::Deref,
+    rc::Rc,
+    sync::Arc,
+};
 
+use bytes::Bytes;
 use derive_more::derive::{Display, From};
-use http::Method;
+use http::StatusCode;
-use reqwest::{Body, Client};
+use reqwest::{Client, RequestBuilder};
 use tokio::sync::Mutex;
 use url::Url;
 
-use crate::net::{Request, RequestBuilder, Response};
+use crate::net::{Request, Response};
 
 use super::{Error, Result};
 
@@ -21,12 +30,12 @@ type Plans = Vec<Plan>;
 #[derive(Debug)]
 struct Plan {
     match_request: Vec<MatchRequest>,
-    response: Response,
+    response: reqwest::Response,
 }
 impl Plan {
     fn matches(&self, request: &Request) -> bool {
         self.match_request.iter().all(|criteria| match criteria {
-            MatchRequest::Method(method) => request.method() == method,
+            MatchRequest::Method(method) => request.method() == http::Method::from(method),
             MatchRequest::Url(uri) => request.url() == uri,
             MatchRequest::Header { name, value } => {
                 request
@@ -40,11 +49,19 @@ impl Plan {
                     })
             }
             MatchRequest::Body(body) => {
-                request.body().and_then(Body::as_bytes) == Some(body.as_bytes())
+                request.body().and_then(reqwest::Body::as_bytes) == Some(body)
             }
         })
     }
 }
+impl Display for Plan {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        for m in &self.match_request {
+            write!(f, " {m}")?;
+        }
+        writeln!(f, " => {:?}", self.response)
+    }
+}
 
 /// An abstraction for the network
 #[derive(Debug, Clone, Default)]
@@ -68,6 +85,7 @@ impl Net {
     /// let client = net.client();
     /// let request = client.get("https://hyper.rs");
     /// ```
+    #[must_use]
     pub fn client(&self) -> Client {
         Default::default()
     }
@@ -75,10 +93,16 @@ impl Net {
     /// Constructs the Request and sends it to the target URL, returning a
     /// future Response.
     ///
+    /// However, if this request is from a [Net] that was created from a [MockNet],
+    /// then the request will be matched and any stored response returned, or an
+    /// error if no matched request was found.
+    ///
     /// # Errors
     ///
     /// This method fails if there was an error while sending request,
     /// redirect loop was detected or redirect limit was exhausted.
+    /// If the response has a Status Code of `4xx` or `5xx` then the
+    /// response will be returned as an [Error::ResponseError].
     ///
     /// # Example
     ///
@@ -96,6 +120,12 @@ impl Net {
             return request.into().send().await.map_err(Error::from);
         };
         let request = request.into().build()?;
+        eprintln!(
+            "? {} {} {:?}",
+            request.method(),
+            request.url(),
+            request.headers()
+        );
         let index = plans
             .lock()
             .await
@@ -105,12 +135,54 @@ impl Net {
             .position(|plan| plan.matches(&request));
         match index {
             Some(i) => {
-                let response = plans.lock().await.borrow_mut().remove(i).response;
+                let plan = plans.lock().await.borrow_mut().remove(i);
-                Ok(response)
+                eprintln!("- matched: {plan}");
+                let response = plan.response;
+                if response.status().is_success() {
+                    Ok(response)
+                } else {
+                    Err(crate::net::Error::ResponseError { response })
+                }
             }
             None => Err(Error::UnexpectedMockRequest(request)),
         }
     }
+
+    /// Starts building an http DELETE request for the URL.
+    #[must_use]
+    pub fn delete(&self, url: impl Into<String>) -> ReqBuilder {
+        ReqBuilder::new(self, NetMethod::Delete, url)
+    }
+
+    /// Starts building an http GET request for the URL.
+    #[must_use]
+    pub fn get(&self, url: impl Into<String>) -> ReqBuilder {
+        ReqBuilder::new(self, NetMethod::Get, url)
+    }
+
+    /// Starts building an http HEAD request for the URL.
+    #[must_use]
+    pub fn head(&self, url: impl Into<String>) -> ReqBuilder {
+        ReqBuilder::new(self, NetMethod::Head, url)
+    }
+
+    /// Starts building an http PATCH request for the URL.
+    #[must_use]
+    pub fn patch(&self, url: impl Into<String>) -> ReqBuilder {
+        ReqBuilder::new(self, NetMethod::Patch, url)
+    }
+
+    /// Starts building an http POST request for the URL.
+    #[must_use]
+    pub fn post(&self, url: impl Into<String>) -> ReqBuilder {
+        ReqBuilder::new(self, NetMethod::Post, url)
+    }
+
+    /// Starts building an http PUT request for the URL.
+    #[must_use]
+    pub fn put(&self, url: impl Into<String>) -> ReqBuilder {
+        ReqBuilder::new(self, NetMethod::Put, url)
+    }
 }
 impl MockNet {
     pub async fn try_from(net: Net) -> std::result::Result<Self, super::Error> {
@@ -123,6 +195,120 @@ impl MockNet {
     }
 }
 
+#[derive(Debug, Clone, Display, PartialEq, Eq)]
+pub enum NetMethod {
+    Delete,
+    Get,
+    Head,
+    Patch,
+    Post,
+    Put,
+}
+impl From<&NetMethod> for http::Method {
+    fn from(value: &NetMethod) -> Self {
+        match value {
+            NetMethod::Delete => http::Method::DELETE,
+            NetMethod::Get => http::Method::GET,
+            NetMethod::Head => http::Method::HEAD,
+            NetMethod::Patch => http::Method::PATCH,
+            NetMethod::Post => http::Method::POST,
+            NetMethod::Put => http::Method::PUT,
+        }
+    }
+}
+
+/// A builder for an http request.
+pub struct ReqBuilder<'net> {
+    net: &'net Net,
+    url: String,
+    method: NetMethod,
+    headers: Vec<(String, String)>,
+    body: Option<Bytes>,
+}
+impl<'net> ReqBuilder<'net> {
+    #[must_use]
+    fn new(net: &'net Net, method: NetMethod, url: impl Into<String>) -> Self {
+        Self {
+            net,
+            url: url.into(),
+            method,
+            headers: vec![],
+            body: None,
+        }
+    }
+
+    /// Constructs the Request and sends it to the target URL, returning a
+    /// future Response.
+    ///
+    /// However, if this request is from a [Net] that was created from a [MockNet],
+    /// then the request will be matched and any stored response returned, or an
+    /// error if no matched request was found.
+    ///
+    /// # Errors
+    ///
+    /// This method fails if there was an error while sending request,
+    /// redirect loop was detected or redirect limit was exhausted.
+    /// If the response has a Status Code of `4xx` or `5xx` then the
+    /// response will be returned as an [Error::ResponseError].
+    ///
+    /// # Example
+    ///
+    /// ```no_run
+    /// # use kxio::net::Result;
+    /// # async fn run() -> Result<()> {
+    /// let net = kxio::net::new();
+    /// let response = net.get("https://hyper.rs")
+    ///   .header("foo", "bar")
+    ///   .body("{}")
+    ///   .send().await?;
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub async fn send(self) -> Result<Response> {
+        let client = self.net.client();
+        // Method
+        let mut req = match self.method {
+            NetMethod::Delete => client.delete(self.url),
+            NetMethod::Get => client.get(self.url),
+            NetMethod::Head => client.head(self.url),
+            NetMethod::Patch => client.patch(self.url),
+            NetMethod::Post => client.post(self.url),
+            NetMethod::Put => client.put(self.url),
+        };
+        // Headers
+        for (name, value) in self.headers.into_iter() {
+            req = req.header(name, value);
+        }
+        // Body
+        if let Some(bytes) = self.body {
+            req = req.body(bytes);
+        }
+
+        self.net.send(req).await
+    }
+
+    /// Adds the header and value to the request.
+    #[must_use]
+    pub fn header(mut self, name: impl Into<String>, value: impl Into<String>) -> Self {
+        self.headers.push((name.into(), value.into()));
+        self
+    }
+
+    /// Adds the headers to the request.
+    #[must_use]
+    pub fn headers(mut self, headers: HashMap<String, String>) -> Self {
+        self.headers.extend(headers);
+        self
+    }
+
+    /// Sets the request body.
+    #[must_use]
+    pub fn body(mut self, bytes: impl Into<Bytes>) -> Self {
+        self.body = Some(bytes.into());
+        self
+    }
+}
+
 /// A struct for defining the expected requests and their responses that should be made
 /// during a test.
 ///
@@ -133,14 +319,14 @@ impl MockNet {
 ///
 /// ```rust
 /// # use kxio::net::Result;
+/// use kxio::net::StatusCode;
 /// # #[tokio::main]
 /// # async fn run() -> Result<()> {
 /// let mock_net = kxio::net::mock();
 /// let client = mock_net.client();
 /// // define an expected requet, and the response that should be returned
-/// mock_net.on()
+/// mock_net.on().get("https://hyper.rs")
-///     .get("https://hyper.rs")
+///     .respond(StatusCode::OK).body("Ok");
-///     .respond(mock_net.response().status(200).body("Ok")?);
 /// let net: kxio::net::Net = mock_net.into();
 /// // use 'net' in your program, by passing it as a reference
 ///
@@ -174,17 +360,18 @@ impl MockNet {
     /// # Example
     ///
     /// ```rust
+    /// use kxio::net::StatusCode;
     /// # use kxio::net::Result;
     /// # fn run() -> Result<()> {
     /// let mock_net = kxio::net::mock();
     /// let client = mock_net.client();
-    /// mock_net.on()
+    /// mock_net.on().get("https://hyper.rs")
-    ///     .get("https://hyper.rs")
+    ///     .respond(StatusCode::OK).body("Ok");
-    ///     .respond(mock_net.response().status(200).body("Ok")?);
     /// # Ok(())
     /// # }
     /// ```
-    pub fn on(&self) -> WhenRequest {
+    #[must_use]
+    pub fn on(&self) -> WhenRequest<WhenBuildRequest> {
         WhenRequest::new(self)
     }
 
@@ -192,11 +379,6 @@ impl MockNet {
         self.plans.borrow_mut().push(plan);
     }
 
-    /// Creates a [http::response::Builder] to be extended and returned by a mocked network request.
-    pub fn response(&self) -> http::response::Builder {
-        Default::default()
-    }
-
     /// Clears all the expected requests and responses from the [MockNet].
     ///
     /// When the [MockNet] goes out of scope it will assert that all expected requests and
@@ -237,62 +419,135 @@ impl Drop for MockNet {
 impl Drop for Net {
     fn drop(&mut self) {
         if let Some(plans) = &self.plans {
-            assert!(plans.try_lock().expect("lock plans").take().is_empty())
+            let unused = plans.try_lock().expect("lock plans").take();
+            if unused.is_empty() {
+                return; // all good
+            }
+            eprintln!("These requests were expected, but not made:");
+            for plan in unused {
+                eprintln!("-{plan}");
+            }
+            panic!("There were expected requests that were not made.");
         }
     }
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum MatchRequest {
-    Method(Method),
+    Method(NetMethod),
     Url(Url),
     Header { name: String, value: String },
-    Body(String),
+    Body(bytes::Bytes),
+}
+impl Display for MatchRequest {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Method(method) => write!(f, "{method}"),
+            Self::Url(url) => write!(f, "{url}"),
+            Self::Header { name, value } => write!(f, "({name}: {value})"),
+            Self::Body(body) => write!(f, "Body: {body:?}"),
+        }
+    }
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum RespondWith {
+    Status(StatusCode),
+    Header { name: String, value: String },
+    Body(bytes::Bytes),
 }
 
 #[derive(Clone, Debug, Display, From)]
-enum MockError {
+pub enum MockError {
+    #[display("url parse: {}", 0)]
     UrlParse(#[from] url::ParseError),
 }
 impl std::error::Error for MockError {}
 
+pub trait WhenState {}
+
+pub struct WhenBuildRequest;
+impl WhenState for WhenBuildRequest {}
+
+pub struct WhenBuildResponse;
+impl WhenState for WhenBuildResponse {}
+
 #[derive(Debug, Clone)]
-pub struct WhenRequest<'net> {
+pub struct WhenRequest<'net, State>
+where
+    State: WhenState,
+{
+    _state: PhantomData<State>,
     net: &'net MockNet,
     match_on: Vec<MatchRequest>,
-    errors: Vec<MockError>,
+    respond_with: Vec<RespondWith>,
+    error: Option<MockError>,
 }
 
-impl<'net> WhenRequest<'net> {
+impl<'net> WhenRequest<'net, WhenBuildRequest> {
-    pub fn get(self, url: impl Into<String>) -> Self {
+    fn new(net: &'net MockNet) -> Self {
-        self._url(Method::GET, url)
+        Self {
-    }
+            _state: PhantomData,
-    pub fn post(self, url: impl Into<String>) -> Self {
+            net,
-        self._url(Method::POST, url)
+            match_on: vec![],
-    }
+            respond_with: vec![],
-    pub fn put(self, url: impl Into<String>) -> Self {
+            error: None,
-        self._url(Method::PUT, url)
+        }
-    }
-    pub fn delete(self, url: impl Into<String>) -> Self {
-        self._url(Method::DELETE, url)
-    }
-    pub fn head(self, url: impl Into<String>) -> Self {
-        self._url(Method::HEAD, url)
-    }
-    pub fn patch(self, url: impl Into<String>) -> Self {
-        self._url(Method::PATCH, url)
     }
 
-    fn _url(mut self, method: http::Method, url: impl Into<String>) -> Self {
+    /// Starts mocking a GET http request.
+    #[must_use]
+    pub fn get(self, url: impl Into<String>) -> Self {
+        self._url(NetMethod::Get, url)
+    }
+
+    /// Starts mocking a POST http request.
+    #[must_use]
+    pub fn post(self, url: impl Into<String>) -> Self {
+        self._url(NetMethod::Post, url)
+    }
+
+    /// Starts mocking a PUT http request.
+    #[must_use]
+    pub fn put(self, url: impl Into<String>) -> Self {
+        self._url(NetMethod::Put, url)
+    }
+
+    /// Starts mocking a DELETE http request.
+    #[must_use]
+    pub fn delete(self, url: impl Into<String>) -> Self {
+        self._url(NetMethod::Delete, url)
+    }
+
+    /// Starts mocking a HEAD http request.
+    #[must_use]
+    pub fn head(self, url: impl Into<String>) -> Self {
+        self._url(NetMethod::Head, url)
+    }
+
+    /// Starts mocking a PATCH http request.
+    #[must_use]
+    pub fn patch(self, url: impl Into<String>) -> Self {
+        self._url(NetMethod::Patch, url)
+    }
+
+    fn _url(mut self, method: NetMethod, url: impl Into<String>) -> Self {
         self.match_on.push(MatchRequest::Method(method));
         match Url::parse(&url.into()) {
             Ok(url) => {
                 self.match_on.push(MatchRequest::Url(url));
             }
-            Err(err) => self.errors.push(err.into()),
+            Err(err) => {
+                self.error.replace(err.into());
+            }
         }
         self
     }
+
+    /// Specifies a header that the mock will match against.
+    ///
+    /// Any request that does not have this header will not match the mock.
+    #[must_use]
     pub fn header(mut self, name: impl Into<String>, value: impl Into<String>) -> Self {
         self.match_on.push(MatchRequest::Header {
             name: name.into(),
@@ -300,26 +555,90 @@ impl<'net> WhenRequest<'net> {
         });
         self
     }
-    pub fn body(mut self, body: impl Into<String>) -> Self {
+
+    /// Specifies headers that the mock will match against.
+    ///
+    /// Any request that does not have this header will not match the mock.
+    #[must_use]
+    pub fn headers(mut self, headers: HashMap<String, String>) -> Self {
+        for (name, value) in headers {
+            self.match_on.push(MatchRequest::Header { name, value });
+        }
+        self
+    }
+
+    /// Specifies the body that the mock will match against.
+    ///
+    /// Any request that does not have this body will not match the mock.
+    #[must_use]
+    pub fn body(mut self, body: impl Into<bytes::Bytes>) -> Self {
         self.match_on.push(MatchRequest::Body(body.into()));
         self
     }
-    pub fn respond<T>(self, response: http::Response<T>)
+
-    where
+    /// Specifies the http Status Code that will be returned for the matching request.
-        T: Into<reqwest::Body>,
+    #[must_use]
-    {
+    pub fn respond(self, status: StatusCode) -> WhenRequest<'net, WhenBuildResponse> {
+        WhenRequest::<WhenBuildResponse> {
+            _state: PhantomData,
+            net: self.net,
+            match_on: self.match_on,
+            respond_with: vec![RespondWith::Status(status)],
+            error: self.error,
+        }
+    }
+}
+impl<'net> WhenRequest<'net, WhenBuildResponse> {
+    /// Specifies a header that will be on the response sent for the matching request.
+    #[must_use]
+    pub fn header(mut self, name: impl Into<String>, value: impl Into<String>) -> Self {
+        let name = name.into();
+        let value = value.into();
+        self.respond_with.push(RespondWith::Header { name, value });
+        self
+    }
+
+    /// Specifies headers that will be on the response sent for the matching request.
+    #[must_use]
+    pub fn headers(mut self, headers: impl Into<HashMap<String, String>>) -> Self {
+        let h: HashMap<String, String> = headers.into();
+        for (name, value) in h.into_iter() {
+            self.respond_with.push(RespondWith::Header { name, value });
+        }
+        self
+    }
+
+    /// Specifies the body of the response sent for the matching request.
+    pub fn body(mut self, body: impl Into<bytes::Bytes>) -> Result<()> {
+        self.respond_with.push(RespondWith::Body(body.into()));
+        self.mock()
+    }
+
+    /// Marks a response that has no body as complete.
+    pub fn mock(self) -> Result<()> {
+        if let Some(error) = self.error {
+            return Err(crate::net::Error::InvalidMock(error));
+        }
+        let mut builder = http::response::Builder::default();
+        let mut response_body = None;
+        for part in self.respond_with {
+            builder = match part {
+                RespondWith::Status(status) => builder.status(status),
+                RespondWith::Header { name, value } => builder.header(name, value),
+                RespondWith::Body(body) => {
+                    response_body.replace(body);
+                    builder
+                }
+            }
+        }
+
+        let body = response_body.unwrap_or_default();
+        let response = builder.body(body)?;
         self.net._when(Plan {
             match_request: self.match_on,
             response: response.into(),
         });
-    }
+        Ok(())
-
-    fn new(net: &'net MockNet) -> Self {
-        Self {
-            net,
-            match_on: vec![],
-            errors: vec![],
-        }
     }
 }
 

tests/fs.rs

@@ -9,6 +9,13 @@ mod path {
 
     use super::*;
 
+    #[test]
+    fn temp_as_real() {
+        let fs = fs::temp().expect("temp fs");
+        let read = fs.as_real();
+
+        assert_eq!(read.base(), fs.base());
+    }
     mod is_link {
         use super::*;
 

tests/net.rs

@@ -1,3 +1,6 @@
+use std::collections::HashMap;
+
+use http::StatusCode;
 //
 use kxio::net::{Error, MockNet, Net};
 
@@ -7,25 +10,20 @@ use assert2::let_assert;
 async fn test_get_url() {
     //given
     let mock_net = kxio::net::mock();
-    let client = mock_net.client();
 
     let url = "https://www.example.com";
-    let my_response = mock_net
-        .response()
-        .status(200)
-        .body("Get OK")
-        .expect("body");
 
     mock_net
         .on()
-        .get("https://www.example.com")
+        .get(url)
-        .respond(my_response);
+        .respond(StatusCode::OK)
+        .header("foo", "bar")
+        .headers(HashMap::new())
+        .body("Get OK")
+        .expect("mock");
 
     //when
-    let response = Net::from(mock_net)
+    let response = Net::from(mock_net).get(url).send().await.expect("response");
-        .send(client.get(url))
-        .await
-        .expect("response");
 
     //then
     assert_eq!(response.status(), http::StatusCode::OK);
@@ -42,7 +40,9 @@ async fn test_post_url() {
 
     net.on()
         .post(url)
-        .respond(net.response().status(200).body("post OK").expect("body"));
+        .respond(StatusCode::OK)
+        .body("post OK")
+        .expect("mock");
 
     //when
     let response = Net::from(net)
@@ -65,7 +65,9 @@ async fn test_put_url() {
 
     net.on()
         .put(url)
-        .respond(net.response().status(200).body("put OK").expect("body"));
+        .respond(StatusCode::OK)
+        .body("put OK")
+        .expect("mock");
 
     //when
     let response = Net::from(net).send(client.put(url)).await.expect("reponse");
@@ -85,7 +87,9 @@ async fn test_delete_url() {
 
     net.on()
         .delete(url)
-        .respond(net.response().status(200).body("delete OK").expect("body"));
+        .respond(StatusCode::OK)
+        .body("delete OK")
+        .expect("mock");
 
     //when
     let response = Net::from(net)
@@ -108,7 +112,9 @@ async fn test_head_url() {
 
     net.on()
         .head(url)
-        .respond(net.response().status(200).body("head OK").expect("body"));
+        .respond(StatusCode::OK)
+        .body("head OK")
+        .expect("mock");
 
     //when
     let response = Net::from(net)
@@ -131,7 +137,9 @@ async fn test_patch_url() {
 
     net.on()
         .patch(url)
-        .respond(net.response().status(200).body("patch OK").expect("body"));
+        .respond(StatusCode::OK)
+        .body("patch OK")
+        .expect("mock");
 
     //when
     let response = Net::from(net)
@@ -147,19 +155,18 @@ async fn test_patch_url() {
 #[tokio::test]
 async fn test_get_wrong_url() {
     //given
-    let mock_net = kxio::net::mock();
+    let net = kxio::net::mock();
-    let client = mock_net.client();
+    let client = net.client();
 
     let url = "https://www.example.com";
-    let my_response = mock_net
+
-        .response()
+    net.on()
-        .status(200)
+        .get(url)
+        .respond(StatusCode::OK)
         .body("Get OK")
-        .expect("body");
+        .expect("mock");
 
-    mock_net.on().get(url).respond(my_response);
+    let net = Net::from(net);
-
-    let net = Net::from(mock_net);
 
     //when
     let_assert!(
@@ -181,11 +188,8 @@ async fn test_post_by_method() {
     let net = kxio::net::mock();
     let client = net.client();
 
-    let my_response = net.response().status(200).body("").expect("response body");
+    // NOTE: No URL specified - so should match any URL
-
+    net.on().respond(StatusCode::OK).body("").expect("mock");
-    net.on()
-        // NOTE: No URL specified - so should match any URL
-        .respond(my_response);
 
     //when
     let response = Net::from(net)
@@ -204,16 +208,12 @@ async fn test_post_by_body() {
     let net = kxio::net::mock();
     let client = net.client();
 
-    let my_response = net
+    // No URL - so any POST with a matching body
-        .response()
-        .status(200)
-        .body("response body")
-        .expect("body");
-
     net.on()
-        // No URL - so any POST with a matching body
         .body("match on body")
-        .respond(my_response);
+        .respond(StatusCode::OK)
+        .body("response body")
+        .expect("mock");
 
     //when
     let response = Net::from(net)
@@ -235,13 +235,11 @@ async fn test_post_by_header() {
     let net = kxio::net::mock();
     let client = net.client();
 
-    let my_response = net
+    net.on()
-        .response()
+        .header("test", "match")
-        .status(200)
+        .respond(StatusCode::OK)
         .body("response body")
-        .expect("body");
+        .expect("mock");
-
-    net.on().header("test", "match").respond(my_response);
 
     //when
     let response = Net::from(net)
@@ -268,13 +266,12 @@ async fn test_post_by_header_wrong_value() {
     let mock_net = kxio::net::mock();
     let client = mock_net.client();
 
-    let my_response = mock_net
+    mock_net
-        .response()
+        .on()
-        .status(200)
+        .header("test", "match")
+        .respond(StatusCode::OK)
         .body("response body")
-        .expect("body");
+        .expect("mock");
-
-    mock_net.on().header("test", "match").respond(my_response);
     let net = Net::from(mock_net);
 
     //when
@@ -300,13 +297,13 @@ async fn test_unused_post_as_net() {
     let mock_net = kxio::net::mock();
 
     let url = "https://www.example.com";
-    let my_response = mock_net
-        .response()
-        .status(200)
-        .body("Post OK")
-        .expect("body");
 
-    mock_net.on().post(url).respond(my_response);
+    mock_net
+        .on()
+        .post(url)
+        .respond(StatusCode::OK)
+        .body("Post OK")
+        .expect("mock");
 
     let _net = Net::from(mock_net);
 
@@ -325,13 +322,13 @@ async fn test_unused_post_as_mocknet() {
     let mock_net = kxio::net::mock();
 
     let url = "https://www.example.com";
-    let my_response = mock_net
-        .response()
-        .status(200)
-        .body("Post OK")
-        .expect("body");
 
-    mock_net.on().post(url).respond(my_response);
+    mock_net
+        .on()
+        .post(url)
+        .respond(StatusCode::OK)
+        .body("Post OK")
+        .expect("mock");
 
     //when
     // don't send the planned request