add support to JSON's requests

Cargo.toml

@@ -12,3 +12,5 @@ tokio = { version = "0.2", features = ["full"] }
 url = "2.1"
 http = "0.2"
 nipper = "0.1.8"
+serde_json = "1.0"
+serde = "1.0"

src/request.rs

@@ -1,7 +1,8 @@
-use crate::response;
 use http::status::StatusCode;
 use url::{ParseError, Url};
 
+use crate::response;
+
 pub trait RequestBase {
     fn new(url: &'static str) -> Result<Self, ParseError>
     where

src/response.rs

@@ -1,7 +1,9 @@
-use crate::selector::SelectorBase;
 use http::StatusCode;
+use serde_json::{Result, Value};
 use url::Url;
 
+use crate::selector::SelectorBase;
+
 #[derive(Debug)]
 pub struct Response {
     pub text: String,
@@ -15,6 +17,14 @@ impl SelectorBase for Response {
     }
 
     fn html(&self) -> String {
-        format!("{}", self.text)
+        self.text.clone()
+    }
+}
+
+impl Response {
+    pub fn to_json(&self) -> Result<Value> {
+        let plain_text: &[u8] = self.text.as_ref();
+        let json = serde_json::from_slice(plain_text)?;
+        Ok(json)
     }
 }

tests/unit_tests.rs

@@ -75,4 +75,13 @@ fn complex_selectors() {
             assert_eq!(node.content(), "link");
         }
     }
+    assert!(sel.css_once::<Selector>("h1").is_none());
+}
+
+#[test]
+fn simple_json_test() {
+    let req: Request = RequestBase::new("https://httpbin.org/json").unwrap();
+    let resp = req.launch().to_json().expect("cannot parse json");
+
+    assert_eq!(resp["slideshow"]["title"], "Sample Slide Show");
 }