tests: verify the response body to make sure the library is sending the http request correctly

crates/test-programs/src/bin/get_with_query.rs

@@ -1,10 +1,20 @@
+use serde::Deserialize;
+use std::collections::HashMap;
 use wasi_http_client::Client;
 
+#[derive(Deserialize)]
+struct Data {
+    args: HashMap<String, String>,
+}
+
 fn main() {
     let resp = Client::new()
         .get("https://httpbin.org/get?a=b")
         .headers([("Content-Type", "application/json"), ("Accept", "*/*")])
         .send()
         .unwrap();
     assert_eq!(resp.status(), 200);
+
+    let data = resp.json::<Data>().unwrap();
+    assert_eq!(data.args.get("a").unwrap(), "b");
 }

crates/test-programs/src/bin/post_with_form_data.rs

@@ -1,6 +1,13 @@
+use serde::Deserialize;
+use std::collections::HashMap;
 use std::time::Duration;
 use wasi_http_client::Client;
 
+#[derive(Deserialize)]
+struct Data {
+    form: HashMap<String, String>,
+}
+
 fn main() {
     let resp = Client::new()
         .post("https://httpbin.org/post")
@@ -9,4 +16,8 @@ fn main() {
         .send()
         .unwrap();
     assert_eq!(resp.status(), 200);
+
+    let data = resp.json::<Data>().unwrap();
+    assert_eq!(data.form.get("a").unwrap(), "b");
+    assert_eq!(data.form.get("c").unwrap(), "");
 }

crates/test-programs/src/bin/post_with_json_data.rs

@@ -1,7 +1,13 @@
+use serde::Deserialize;
 use std::collections::HashMap;
 use std::time::Duration;
 use wasi_http_client::Client;
 
+#[derive(Deserialize)]
+struct Data {
+    json: HashMap<String, String>,
+}
+
 fn main() {
     let resp = Client::new()
         .post("https://httpbin.org/post")
@@ -10,4 +16,7 @@ fn main() {
         .send()
         .unwrap();
     assert_eq!(resp.status(), 200);
+
+    let data = resp.json::<Data>().unwrap();
+    assert_eq!(data.json.get("data").unwrap(), "hello");
 }

crates/test-programs/src/bin/post_with_multipart_form_data.rs

@@ -1,6 +1,14 @@
+use serde::Deserialize;
+use std::collections::HashMap;
 use std::time::Duration;
 use wasi_http_client::Client;
 
+#[derive(Deserialize)]
+struct Data {
+    form: HashMap<String, String>,
+    files: HashMap<String, String>,
+}
+
 fn main() {
     let resp = Client::new()
         .post("https://httpbin.org/post")
@@ -22,4 +30,8 @@ hello
         .send()
         .unwrap();
     assert_eq!(resp.status(), 200);
+
+    let data = resp.json::<Data>().unwrap();
+    assert_eq!(data.form.get("field1").unwrap(), "value1");
+    assert_eq!(data.files.get("field2").unwrap(), "hello");
 }

tests/main.rs

@@ -16,16 +16,6 @@ fn get_chunk() {
     assert!(status.success());
 }
 
-#[test]
-fn get_with_json_response() {
-    let mut cmd = wasmtime();
-    let status = cmd
-        .arg(test_programs_artifacts::GET_WITH_JSON_RESPONSE_COMPONENT)
-        .status()
-        .unwrap();
-    assert!(status.success());
-}
-
 #[test]
 fn get_with_query() {
     let mut cmd = wasmtime();