diff --git a/.cargo/config.toml b/.cargo/config.toml
index bbfc28a..9d76a7f 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -1,3 +1,5 @@
 [build]
 rustflags = ["--cfg", "tokio_unstable"]
 
+[target.wasm32-unknown-unknown]
+runner = "wasm-bindgen-test-runner"
diff --git a/Cargo.lock b/Cargo.lock
index 2df58ab..6cfaa15 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -126,9 +126,9 @@ version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "16e62a023e7c117e27523144c5d2459f4397fcc3cab0085af8e2224f643a0193"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -137,9 +137,9 @@ version = "0.1.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "461abc97219de0eaaf81fe3ef974a540158f3d079c2ab200f891f1a2ef201e85"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -206,9 +206,9 @@ dependencies = [
 
 [[package]]
 name = "backtrace"
-version = "0.3.69"
+version = "0.3.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2089b7e3f35b9dd2d0ed921ead4f6d318c27680d4a5bd167b3ee120edb105837"
+checksum = "26b05800d2e817c8b3b4b54abd461726265fa9789ae34330622f2db9ee696f9d"
 dependencies = [
  "addr2line",
  "cc",
@@ -281,9 +281,9 @@ checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "bytes"
-version = "1.5.0"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2bd12c1caf447e69cd4528f47f94d203fd2582878ecb9e9465484c4148a8223"
+checksum = "514de17de45fdb8dc022b1a7975556c53c86f9f0aa5f534b98977b171857c2c9"
 
 [[package]]
 name = "cc"
@@ -327,9 +327,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90239a040c80f5e14809ca132ddc4176ab33d5e17e49691793296e3fcb34d72f"
 dependencies = [
  "heck",
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -487,6 +487,17 @@ dependencies = [
  "parking_lot_core",
 ]
 
+[[package]]
+name = "default-env"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f753eb82d29277e79efc625e84aecacfd4851ee50e05a8573a4740239a77bfd3"
+dependencies = [
+ "proc-macro2 0.4.30",
+ "quote 0.6.13",
+ "syn 0.15.44",
+]
+
 [[package]]
 name = "digest"
 version = "0.10.7"
@@ -512,6 +523,7 @@ dependencies = [
  "base64",
  "bytes",
  "console_error_panic_hook",
+ "default-env",
  "event-listener",
  "fastwebsockets 0.6.0",
  "futures-util",
@@ -530,6 +542,7 @@ dependencies = [
  "tower-service",
  "wasm-bindgen",
  "wasm-bindgen-futures",
+ "wasm-bindgen-test",
  "wasm-streams",
  "wasmtimer",
  "web-sys",
@@ -707,9 +720,9 @@ version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "87750cf4b7a4c0625b1529e4c543c2182106e4dedc60a2a6455e00d212c489ac"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -783,7 +796,7 @@ dependencies = [
  "futures-sink",
  "futures-util",
  "http 0.2.12",
- "indexmap 2.2.5",
+ "indexmap 2.2.6",
  "slab",
  "tokio",
  "tokio-util",
@@ -802,7 +815,7 @@ dependencies = [
  "futures-sink",
  "futures-util",
  "http 1.1.0",
- "indexmap 2.2.5",
+ "indexmap 2.2.6",
  "slab",
  "tokio",
  "tokio-util",
@@ -1025,9 +1038,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.2.5"
+version = "2.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b0b929d511467233429c45a44ac1dcaa21ba0f5ba11e4879e6ed28ddb4f9df4"
+checksum = "168fb715dda47215e360912c096649d23d58bf392ac62f73919e831745e40f26"
 dependencies = [
  "equivalent",
  "hashbrown 0.14.3",
@@ -1238,9 +1251,9 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -1311,9 +1324,9 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2f38a4412a78282e09a2cf38d195ea5420d15ba0602cb375210efbc877243965"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -1340,6 +1353,15 @@ version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
 
+[[package]]
+name = "proc-macro2"
+version = "0.4.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
+dependencies = [
+ "unicode-xid",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.79"
@@ -1367,9 +1389,9 @@ checksum = "efb6c9a1dd1def8e2124d17e83a20af56f1570d6c2d2bd9e266ccb768df3840e"
 dependencies = [
  "anyhow",
  "itertools",
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -1381,13 +1403,22 @@ dependencies = [
  "prost",
 ]
 
+[[package]]
+name = "quote"
+version = "0.6.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
+dependencies = [
+ "proc-macro2 0.4.30",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
 dependencies = [
- "proc-macro2",
+ "proc-macro2 1.0.79",
 ]
 
 [[package]]
@@ -1431,9 +1462,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.10.3"
+version = "1.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b62dbe01f0b06f9d8dc7d49e05a0785f153b00b2c227856282f671e0318c9b15"
+checksum = "c117dbdfde9c8308975b6a18d71f3f385c89461f7b3fb054288ecf2a2058ba4c"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1579,6 +1610,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "scoped-tls"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1cf6437eb19a8f4a6cc0f7dca544973b0b78843adbfeb3683d1a94a0024a294"
+
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
@@ -1635,9 +1672,9 @@ version = "1.0.197"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7eb0b34b42edc17f6b7cac84a52a1c5f0e1bb2227e997ca9011ea3dd34e8610b"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -1745,14 +1782,25 @@ version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "81cdd64d312baedb58e21336b31bc043b77e01cc99033ce76ef539f78e965ebc"
 
+[[package]]
+name = "syn"
+version = "0.15.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
+dependencies = [
+ "proc-macro2 0.4.30",
+ "quote 0.6.13",
+ "unicode-xid",
+]
+
 [[package]]
 name = "syn"
 version = "2.0.53"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7383cd0e49fff4b6b90ca5670bfd3e9d6a733b3f90c686605aa7eec8c4996032"
 dependencies = [
- "proc-macro2",
- "quote",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
  "unicode-ident",
 ]
 
@@ -1799,9 +1847,9 @@ version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c61f3ba182994efc43764a46c018c347bc492c79f024e705f46567b418f6d4f7"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -1850,9 +1898,9 @@ version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b8a1e28f2deaa14e508979454cb3a223b10b938b45af148bc0986de36f1923b"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -1978,9 +2026,9 @@ version = "0.1.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
 ]
 
 [[package]]
@@ -2026,6 +2074,12 @@ version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
 
+[[package]]
+name = "unicode-xid"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
+
 [[package]]
 name = "untrusted"
 version = "0.9.0"
@@ -2106,9 +2160,9 @@ dependencies = [
  "bumpalo",
  "log",
  "once_cell",
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
  "wasm-bindgen-shared",
 ]
 
@@ -2130,7 +2184,7 @@ version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a1f8823de937b71b9460c0c34e25f3da88250760bec0ebac694b49997550d726"
 dependencies = [
- "quote",
+ "quote 1.0.35",
  "wasm-bindgen-macro-support",
 ]
 
@@ -2140,9 +2194,9 @@ version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e94f17b526d0a461a191c78ea52bbce64071ed5c04c9ffe424dcb38f74171bb7"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -2153,6 +2207,31 @@ version = "0.2.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "af190c94f2773fdb3729c55b007a722abb5384da03bc0986df4c289bf5567e96"
 
+[[package]]
+name = "wasm-bindgen-test"
+version = "0.3.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9bf62a58e0780af3e852044583deee40983e5886da43a271dd772379987667b"
+dependencies = [
+ "console_error_panic_hook",
+ "js-sys",
+ "scoped-tls",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-bindgen-test-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-test-macro"
+version = "0.3.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7f89739351a2e03cb94beb799d47fb2cac01759b40ec441f7de39b00cbf7ef0"
+dependencies = [
+ "proc-macro2 1.0.79",
+ "quote 1.0.35",
+ "syn 2.0.53",
+]
+
 [[package]]
 name = "wasm-streams"
 version = "0.4.0"
diff --git a/client/Cargo.toml b/client/Cargo.toml
index 895d526..4f0c185 100644
--- a/client/Cargo.toml
+++ b/client/Cargo.toml
@@ -5,7 +5,7 @@ edition = "2021"
 license = "LGPL-3.0-only"
 
 [lib]
-crate-type = ["cdylib"]
+crate-type = ["cdylib", "rlib"]
 
 [dependencies]
 bytes = "1.5.0"
@@ -38,3 +38,8 @@ wasmtimer = "0.2.0"
 
 [dependencies.ring]
 features = ["wasm32_unknown_unknown_js"]
+
+[dev-dependencies]
+default-env = "0.1.1"
+wasm-bindgen-test = "0.3.42"
+web-sys = { version = "0.3.69", features = ["FormData", "UrlSearchParams"] }
diff --git a/client/src/lib.rs b/client/src/lib.rs
index 773578d..4245876 100644
--- a/client/src/lib.rs
+++ b/client/src/lib.rs
@@ -10,7 +10,7 @@ mod wrappers;
 use tls_stream::EpxTlsStream;
 use tokioio::TokioIo;
 use udp_stream::EpxUdpStream;
-use utils::{Boolinator, ReplaceErr, UriExt};
+pub use utils::{Boolinator, ReplaceErr, UriExt};
 use websocket::EpxWebSocket;
 use wrappers::{IncomingBody, ServiceWrapper, TlsWispService, WebSocketWrapper};
 
@@ -231,7 +231,7 @@ impl EpoxyClient {
         let mut redirected = false;
         let mut current_url = req.uri().clone();
         let mut current_resp: EpxResponse = self.send_req_inner(req, should_redirect).await?;
-        for _ in 0..self.redirect_limit - 1 {
+        for _ in 0..self.redirect_limit {
             match current_resp {
                 EpxResponse::Success(_) => break,
                 EpxResponse::Redirect((_, req)) => {
diff --git a/client/src/wrappers.rs b/client/src/wrappers.rs
index 24e4188..3c8caf8 100644
--- a/client/src/wrappers.rs
+++ b/client/src/wrappers.rs
@@ -173,6 +173,7 @@ pub struct WebSocketWrapper {
     inner: SendWrapper<WebSocket>,
     open_event: Arc<Event>,
     error_event: Arc<Event>,
+    close_event: Arc<Event>,
     closed: Arc<AtomicBool>,
 
     // used to retain the closures
@@ -282,6 +283,7 @@ impl WebSocketWrapper {
                 inner: SendWrapper::new(ws),
                 open_event,
                 error_event,
+                close_event: close_event.clone(),
                 closed: closed.clone(),
                 onopen: SendWrapper::new(onopen),
                 onclose: SendWrapper::new(onclose),
@@ -334,5 +336,8 @@ impl Drop for WebSocketWrapper {
         self.inner.set_onclose(None);
         self.inner.set_onerror(None);
         self.inner.set_onmessage(None);
+        self.closed.store(true, Ordering::Release);
+        self.close_event.notify(usize::MAX);
+        let _ = self.inner.close();
     }
 }
diff --git a/client/test.sh b/client/test.sh
new file mode 100644
index 0000000..7dee978
--- /dev/null
+++ b/client/test.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+(cd ..; cargo b --bin epoxy-server) 
+../target/debug/epoxy-server &
+server_pid=$!
+sleep 1
+echo "server_pid: $server_pid"
+
+cargo test --target wasm32-unknown-unknown
+
+kill $server_pid
diff --git a/client/tests/fetch.rs b/client/tests/fetch.rs
new file mode 100644
index 0000000..02eabb2
--- /dev/null
+++ b/client/tests/fetch.rs
@@ -0,0 +1,270 @@
+use default_env::default_env;
+use epoxy_client::EpoxyClient;
+use js_sys::{JsString, Object, Reflect, Uint8Array, JSON};
+use tokio::sync::OnceCell;
+use wasm_bindgen::JsValue;
+use wasm_bindgen_futures::JsFuture;
+use wasm_bindgen_test::*;
+use web_sys::{FormData, Headers, Response, UrlSearchParams};
+
+wasm_bindgen_test_configure!(run_in_dedicated_worker);
+
+static USER_AGENT: &str = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36";
+static EPOXY_CLIENT: OnceCell<EpoxyClient> = OnceCell::const_new();
+
+async fn get_client_w_ua(useragent: &str, redirect_limit: usize) -> EpoxyClient {
+    EpoxyClient::new(
+        "ws://localhost:4000".into(),
+        useragent.into(),
+        redirect_limit,
+    )
+    .await
+    .ok()
+    .expect("Failed to create client")
+}
+
+macro_rules! fetch {
+    ($url:expr, $opts:expr) => {
+        EPOXY_CLIENT
+            .get_or_init(|| get_client_w_ua(USER_AGENT, 10))
+            .await
+            .fetch($url, $opts)
+            .await
+            .ok()
+            .expect("Failed to fetch")
+    };
+}
+macro_rules! httpbin {
+    ($url:literal) => {
+        concat!(default_env!("HTTPBIN_URL", "https://httpbin.org/"), $url)
+    };
+}
+
+async fn get_body_json(resp: &Response) -> JsValue {
+    JsFuture::from(resp.json().unwrap()).await.unwrap()
+}
+async fn get_body_text(resp: &Response) -> JsValue {
+    JsFuture::from(resp.text().unwrap()).await.unwrap()
+}
+
+fn get_header(body: &JsValue, header: &str) -> Result<JsValue, JsValue> {
+    Reflect::get(body, &JsValue::from("headers"))
+        .and_then(|x| Reflect::get(&x, &JsValue::from(header)))
+}
+fn get_resp_body(body: &JsValue) -> Result<JsValue, JsValue> {
+    Reflect::get(body, &JsValue::from("data"))
+}
+fn get_resp_form(body: &JsValue) -> Result<JsValue, JsValue> {
+    Reflect::get(body, &JsValue::from("form"))
+}
+
+fn check_resp(resp: &Response, url: &str, status: u16, status_text: &str) {
+    assert_eq!(resp.url(), url);
+    assert_eq!(resp.status(), status);
+    assert_eq!(resp.status_text(), status_text);
+}
+
+#[wasm_bindgen_test]
+async fn get() {
+    let url = httpbin!("get");
+    let resp = fetch!(url.into(), Object::new());
+
+    check_resp(&resp, url, 200, "OK");
+
+    let body: Object = get_body_json(&resp).await.into();
+    assert_eq!(
+        get_header(&body, "User-Agent"),
+        Ok(JsValue::from(USER_AGENT))
+    );
+}
+
+#[wasm_bindgen_test]
+async fn gzip() {
+    let url = httpbin!("gzip");
+    let resp = fetch!(url.into(), Object::new());
+
+    check_resp(&resp, url, 200, "OK");
+
+    let body: Object = get_body_json(&resp).await.into();
+    assert_eq!(
+        get_header(&body, "Accept-Encoding"),
+        Ok(JsValue::from("gzip, br"))
+    );
+}
+
+#[wasm_bindgen_test]
+async fn brotli() {
+    let url = httpbin!("brotli");
+    let resp = fetch!(url.into(), Object::new());
+
+    check_resp(&resp, url, 200, "OK");
+
+    let body: Object = get_body_json(&resp).await.into();
+    assert_eq!(
+        get_header(&body, "Accept-Encoding"),
+        Ok(JsValue::from("gzip, br"))
+    );
+}
+
+#[wasm_bindgen_test]
+async fn redirect() {
+    let url = httpbin!("redirect/2");
+    let resp = fetch!(url.into(), Object::new());
+
+    check_resp(&resp, httpbin!("get"), 200, "OK");
+
+    get_body_json(&resp).await;
+}
+
+#[wasm_bindgen_test]
+async fn redirect_limit() {
+    // new client created due to redirect limit difference
+    let client = get_client_w_ua(USER_AGENT, 2).await;
+    let url = httpbin!("redirect/3");
+    let resp = client
+        .fetch(url.into(), Object::new())
+        .await
+        .ok()
+        .expect("Failed to fetch");
+
+    check_resp(&resp, httpbin!("relative-redirect/1"), 302, "Found");
+
+    assert_eq!(get_body_text(&resp).await, JsValue::from(""));
+}
+
+#[wasm_bindgen_test]
+async fn redirect_manual() {
+    let url = httpbin!("redirect/2");
+
+    let obj = Object::new();
+    Reflect::set(&obj, &JsValue::from("redirect"), &JsValue::from("manual")).unwrap();
+
+    let resp = fetch!(url.into(), obj);
+
+    check_resp(&resp, url, 302, "Found");
+
+    get_body_text(&resp).await;
+}
+
+#[wasm_bindgen_test]
+async fn post_string() {
+    let url = httpbin!("post");
+    let obj = Object::new();
+    Reflect::set(&obj, &JsValue::from("method"), &JsValue::from("POST")).unwrap();
+    Reflect::set(&obj, &JsValue::from("body"), &JsValue::from("epoxy body")).unwrap();
+    let resp = fetch!(url.into(), obj);
+
+    check_resp(&resp, url, 200, "OK");
+
+    let body: Object = get_body_json(&resp).await.into();
+    assert_eq!(get_resp_body(&body), Ok(JsValue::from("epoxy body")));
+}
+
+#[wasm_bindgen_test]
+async fn post_arraybuffer() {
+    let url = httpbin!("post");
+
+    let obj = Object::new();
+    Reflect::set(&obj, &JsValue::from("method"), &JsValue::from("POST")).unwrap();
+    let req_body = b"epoxy body";
+    let u8array = Uint8Array::new_with_length(req_body.len().try_into().unwrap());
+    u8array.copy_from(req_body);
+    Reflect::set(&obj, &JsValue::from("body"), &u8array).unwrap();
+
+    let resp = fetch!(url.into(), obj);
+
+    check_resp(&resp, url, 200, "OK");
+
+    let body: Object = get_body_json(&resp).await.into();
+    assert_eq!(get_resp_body(&body), Ok(JsValue::from("epoxy body")));
+}
+
+#[wasm_bindgen_test]
+async fn post_formdata() {
+    let url = httpbin!("post");
+
+    let obj = Object::new();
+    Reflect::set(&obj, &JsValue::from("method"), &JsValue::from("POST")).unwrap();
+    let req_body = FormData::new().unwrap();
+    req_body.set_with_str("a", "b").unwrap();
+    Reflect::set(&obj, &JsValue::from("body"), &req_body).unwrap();
+
+    let resp = fetch!(url.into(), obj);
+
+    check_resp(&resp, url, 200, "OK");
+
+    let body: Object = get_body_json(&resp).await.into();
+    assert_eq!(
+        get_resp_form(&body).and_then(|x| JSON::stringify(&x)),
+        Ok(JsString::from(r#"{"a":"b"}"#))
+    );
+    assert!(JsString::from(get_header(&body, "Content-Type").unwrap())
+        .includes("multipart/form-data", 0));
+}
+
+#[wasm_bindgen_test]
+async fn post_urlsearchparams() {
+    let url = httpbin!("post");
+
+    let obj = Object::new();
+    Reflect::set(&obj, &JsValue::from("method"), &JsValue::from("POST")).unwrap();
+    let req_body = UrlSearchParams::new_with_str("a=b").unwrap();
+    Reflect::set(&obj, &JsValue::from("body"), &req_body).unwrap();
+
+    let resp = fetch!(url.into(), obj);
+
+    check_resp(&resp, url, 200, "OK");
+
+    let body: Object = get_body_json(&resp).await.into();
+    assert_eq!(
+        get_resp_form(&body).and_then(|x| JSON::stringify(&x)),
+        Ok(JsString::from(r#"{"a":"b"}"#))
+    );
+    assert!(JsString::from(get_header(&body, "Content-Type").unwrap())
+        .includes("application/x-www-form-urlencoded", 0));
+}
+
+#[wasm_bindgen_test]
+async fn headers_obj() {
+    let url = httpbin!("get");
+
+    let obj = Object::new();
+    let headers = Object::new();
+    Reflect::set(
+        &headers,
+        &JsValue::from("x-header-one"),
+        &JsValue::from("value"),
+    )
+    .unwrap();
+    Reflect::set(&obj, &JsValue::from("headers"), &headers).unwrap();
+
+    let resp = fetch!(url.into(), obj);
+
+    check_resp(&resp, url, 200, "OK");
+
+    let body: Object = get_body_json(&resp).await.into();
+    assert_eq!(
+        get_header(&body, "X-Header-One"),
+        Ok(JsValue::from("value"))
+    );
+}
+
+#[wasm_bindgen_test]
+async fn headers_headers() {
+    let url = httpbin!("get");
+
+    let obj = Object::new();
+    let headers = Headers::new().unwrap();
+    headers.set("x-header-one", "value").unwrap();
+    Reflect::set(&obj, &JsValue::from("headers"), &headers).unwrap();
+
+    let resp = fetch!(url.into(), obj);
+
+    check_resp(&resp, url, 200, "OK");
+
+    let body: Object = get_body_json(&resp).await.into();
+    assert_eq!(
+        get_header(&body, "X-Header-One"),
+        Ok(JsValue::from("value"))
+    );
+}