matrix-sdk: Support compiling to wasm32-unknown-unknown

.travis.yml

@@ -20,6 +20,28 @@ jobs:
       after_success:
           - bash <(curl -s https://codecov.io/bash)
 
+    - os: linux
+      name: wasm32-unknown-unknown
+      before_script:
+          - |
+            cargo install wasm-bindgen-cli
+            rustup target add wasm32-unknown-unknown
+            wget https://github.com/emscripten-core/emsdk/archive/master.zip
+            unzip master.zip
+            ./emsdk-master/emsdk install latest
+            ./emsdk-master/emsdk activate latest
+      script:
+          - |
+            source emsdk-master/emsdk_env.sh
+            cd matrix_sdk/examples/wasm_send_message
+            cargo build --target wasm32-unknown-unknown
+            cd -
+
+            cd matrix_sdk_base
+            cargo test --target wasm32-unknown-unknown --no-default-features --features encryption
+
+
+
 before_script:
   - rustup component add rustfmt
 

Cargo.toml

@@ -3,6 +3,10 @@ members = [
     "matrix_sdk",
     "matrix_sdk_base",
     "matrix_sdk_test",
+    "matrix_sdk_test_macros",
     "matrix_sdk_crypto",
     "matrix_sdk_common",
 ]
+
+[patch.crates-io]
+olm-sys = { git = "https://gitlab.gnome.org/stoically/olm-sys", branch = "wasm-target" }

matrix_sdk/Cargo.toml

@@ -17,14 +17,14 @@ encryption = ["matrix-sdk-base/encryption"]
 sqlite-cryptostore = ["matrix-sdk-base/sqlite-cryptostore"]
 
 [dependencies]
-futures = "0.3.4"
 http = "0.2.1"
 reqwest = "0.10.4"
 serde_json = "1.0.52"
 thiserror = "1.0.16"
 tracing = "0.1.13"
 url = "2.1.1"
-uuid = { version = "0.8.1", features = ["v4"] }
+futures-timer = "3.0.2"
+
 
 matrix-sdk-common = { version = "0.1.0", path = "../matrix_sdk_common" }
 
@@ -38,11 +38,6 @@ version = "0.2.4"
 default-features = false
 features = ["std", "std-future"]
 
-[dependencies.tokio]
-version = "0.2.20"
-default-features = false
-features = ["time"]
-
 [dev-dependencies]
 async-trait = "0.1.30"
 dirs = "2.0.2"
@@ -54,3 +49,4 @@ tracing-subscriber = "0.2.5"
 tempfile = "3.1.0"
 mockito = "0.25.1"
 lazy_static = "1.4.0"
+futures = "0.3.4"

matrix_sdk/examples/wasm_send_message/.gitignore

@@ -0,0 +1,7 @@
+node_modules
+pkg
+target
+Cargo.lock
+*.swp
+dist
+package-lock.json

matrix_sdk/examples/wasm_send_message/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "wasm"
+version = "0.1.0"
+authors = ["stoically <stoically@protonmail.com>"]
+edition = "2018"
+
+# Config mostly pulled from: https://github.com/rustwasm/wasm-bindgen/blob/master/examples/fetch/Cargo.toml
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+matrix-sdk = { path = "../..", default-features = false, features = ["encryption"] }
+url = "2.1.1"
+wasm-bindgen = { version = "0.2.62", features = ["serde-serialize"] }
+wasm-bindgen-futures = "0.4.12"
+
+[workspace]
+
+[patch.crates-io]
+olm-sys = { git = "https://gitlab.gnome.org/stoically/olm-sys", branch = "wasm-target" }

matrix_sdk/examples/wasm_send_message/README.md

@@ -0,0 +1,13 @@
+## Example usage of matrix-rust-sdk from WASM
+
+This requires [emscripten](https://github.com/emscripten-core/emscripten) to be installed and in PATH to compile successfully.
+
+You can build the example locally with:
+
+    npm install
+    npm run serve
+
+and then visiting http://localhost:8080 in a browser should run the example!
+
+
+This example is loosely based off of [this example](https://github.com/seanmonstar/reqwest/tree/master/examples/wasm_github_fetch), an example usage of `fetch` from `wasm-bindgen`.

matrix_sdk/examples/wasm_send_message/index.js

@@ -0,0 +1,7 @@
+const rust = import('./pkg');
+
+rust
+    .then(m => {
+        return m.run()
+    })
+    .catch(console.error);

matrix_sdk/examples/wasm_send_message/package.json

@@ -0,0 +1,14 @@
+{
+    "scripts": {
+        "build": "webpack",
+        "serve": "webpack-dev-server"
+    },
+    "devDependencies": {
+        "@wasm-tool/wasm-pack-plugin": "1.0.1",
+        "text-encoding": "^0.7.0",
+        "html-webpack-plugin": "^3.2.0",
+        "webpack": "^4.29.4",
+        "webpack-cli": "^3.1.1",
+        "webpack-dev-server": "^3.1.0"
+    }
+}

matrix_sdk/examples/wasm_send_message/src/lib.rs

@@ -0,0 +1,37 @@
+use matrix_sdk::{
+    events::room::message::{MessageEventContent, TextMessageEventContent},
+    identifiers::RoomId,
+    Client, ClientConfig,
+};
+use std::convert::TryFrom;
+use url::Url;
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub async fn run() -> Result<JsValue, JsValue> {
+    let homeserver_url = "http://localhost:8008";
+    let username = "user";
+    let password = "password";
+
+    let client_config = ClientConfig::new();
+    let homeserver_url = Url::parse(&homeserver_url).unwrap();
+    let client = Client::new_with_config(homeserver_url, None, client_config).unwrap();
+
+    client
+        .login(username, password, None, Some("rust-sdk"))
+        .await
+        .unwrap();
+
+    let room_id = RoomId::try_from("!KpLWMcXcHKDMfEYNqA:localhost").unwrap();
+
+    let content = MessageEventContent::Text(TextMessageEventContent {
+        body: "hello from wasm".to_string(),
+        format: None,
+        formatted_body: None,
+        relates_to: None,
+    });
+
+    client.room_send(&room_id, content, None).await.unwrap();
+
+    Ok(JsValue::NULL)
+}

matrix_sdk/examples/wasm_send_message/webpack.config.js

@@ -0,0 +1,26 @@
+const path = require('path');
+const HtmlWebpackPlugin = require('html-webpack-plugin');
+const webpack = require('webpack');
+const WasmPackPlugin = require("@wasm-tool/wasm-pack-plugin");
+
+module.exports = {
+    entry: './index.js',
+    output: {
+        path: path.resolve(__dirname, 'dist'),
+        filename: 'index.js',
+    },
+    devtool: 'source-map',
+    plugins: [
+        new HtmlWebpackPlugin(),
+        new WasmPackPlugin({
+            crateDirectory: path.resolve(__dirname, ".")
+        }),
+        // Have this example work in Edge which doesn't ship `TextEncoder` or
+        // `TextDecoder` at this time.
+        new webpack.ProvidePlugin({
+            TextDecoder: ['text-encoding', 'TextDecoder'],
+            TextEncoder: ['text-encoding', 'TextEncoder']
+        })
+    ],
+    mode: 'development'
+};

matrix_sdk/src/client.rs

@@ -21,18 +21,18 @@ use std::result::Result as StdResult;
 use std::sync::Arc;
 use std::time::{Duration, Instant};
 
-use uuid::Uuid;
+use matrix_sdk_common::locks::RwLock;
+use matrix_sdk_common::uuid::Uuid;
 
-use futures::future::Future;
-use tokio::sync::RwLock;
-use tokio::time::delay_for as sleep;
+use futures_timer::Delay as sleep;
+use std::future::Future;
 #[cfg(feature = "encryption")]
 use tracing::{debug, warn};
 use tracing::{info, instrument, trace};
 
 use http::Method as HttpMethod;
 use http::Response as HttpResponse;
-use reqwest::header::{HeaderValue, InvalidHeaderValue};
+use reqwest::header::{HeaderValue, InvalidHeaderValue, AUTHORIZATION};
 use url::Url;
 
 use crate::events::room::message::MessageEventContent;
@@ -98,6 +98,7 @@ impl std::fmt::Debug for Client {
 ///     .state_store(Box::new(store));
 /// ```
 pub struct ClientConfig {
+    #[cfg(not(target_arch = "wasm32"))]
     proxy: Option<reqwest::Proxy>,
     user_agent: Option<HeaderValue>,
     disable_ssl_verification: bool,
@@ -106,9 +107,12 @@ pub struct ClientConfig {
 
 impl std::fmt::Debug for ClientConfig {
     fn fmt(&self, fmt: &mut std::fmt::Formatter<'_>) -> StdResult<(), std::fmt::Error> {
-        fmt.debug_struct("ClientConfig")
-            .field("proxy", &self.proxy)
-            .field("user_agent", &self.user_agent)
+        let mut res = fmt.debug_struct("ClientConfig");
+
+        #[cfg(not(target_arch = "wasm32"))]
+        let res = res.field("proxy", &self.proxy);
+
+        res.field("user_agent", &self.user_agent)
             .field("disable_ssl_verification", &self.disable_ssl_verification)
             .finish()
     }
@@ -137,6 +141,7 @@ impl ClientConfig {
     ///     .proxy("http://localhost:8080")
     ///     .unwrap();
     /// ```
+    #[cfg(not(target_arch = "wasm32"))]
     pub fn proxy(mut self, proxy: &str) -> Result<Self> {
         self.proxy = Some(reqwest::Proxy::all(proxy)?);
         Ok(self)
@@ -262,27 +267,32 @@ impl Client {
 
         let http_client = reqwest::Client::builder();
 
-        let http_client = if config.disable_ssl_verification {
-            http_client.danger_accept_invalid_certs(true)
-        } else {
-            http_client
+        #[cfg(not(target_arch = "wasm32"))]
+        let http_client = {
+            let http_client = if config.disable_ssl_verification {
+                http_client.danger_accept_invalid_certs(true)
+            } else {
+                http_client
+            };
+
+            let http_client = match config.proxy {
+                Some(p) => http_client.proxy(p),
+                None => http_client,
+            };
+
+            let mut headers = reqwest::header::HeaderMap::new();
+
+            let user_agent = match config.user_agent {
+                Some(a) => a,
+                None => HeaderValue::from_str(&format!("matrix-rust-sdk {}", VERSION)).unwrap(),
+            };
+
+            headers.insert(reqwest::header::USER_AGENT, user_agent);
+
+            http_client.default_headers(headers)
         };
 
-        let http_client = match config.proxy {
-            Some(p) => http_client.proxy(p),
-            None => http_client,
-        };
-
-        let mut headers = reqwest::header::HeaderMap::new();
-
-        let user_agent = match config.user_agent {
-            Some(a) => a,
-            None => HeaderValue::from_str(&format!("matrix-rust-sdk {}", VERSION)).unwrap(),
-        };
-
-        headers.insert(reqwest::header::USER_AGENT, user_agent);
-
-        let http_client = http_client.default_headers(headers).build()?;
+        let http_client = http_client.build()?;
 
         let base_client = if let Some(store) = config.state_store {
             BaseClient::new_with_state_store(session, store)?
@@ -317,21 +327,21 @@ impl Client {
     /// Returns the joined rooms this client knows about.
     ///
     /// A `HashMap` of room id to `matrix::models::Room`
-    pub fn joined_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<tokio::sync::RwLock<Room>>>>> {
+    pub fn joined_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<RwLock<Room>>>>> {
         self.base_client.joined_rooms()
     }
 
     /// Returns the invited rooms this client knows about.
     ///
     /// A `HashMap` of room id to `matrix::models::Room`
-    pub fn invited_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<tokio::sync::RwLock<Room>>>>> {
+    pub fn invited_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<RwLock<Room>>>>> {
         self.base_client.invited_rooms()
     }
 
     /// Returns the left rooms this client knows about.
     ///
     /// A `HashMap` of room id to `matrix::models::Room`
-    pub fn left_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<tokio::sync::RwLock<Room>>>>> {
+    pub fn left_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<RwLock<Room>>>>> {
         self.base_client.left_rooms()
     }
 
@@ -837,7 +847,7 @@ impl Client {
             let response = if let Ok(r) = response {
                 r
             } else {
-                sleep(Duration::from_secs(1)).await;
+                sleep::new(Duration::from_secs(1)).await;
                 continue;
             };
 
@@ -871,7 +881,7 @@ impl Client {
             // the sync timeout.
             if let Some(t) = last_sync_time {
                 if now - t <= Duration::from_secs(1) {
-                    sleep(Duration::from_secs(1)).await;
+                    sleep::new(Duration::from_secs(1)).await;
                 }
             }
 
@@ -923,7 +933,8 @@ impl Client {
             let session = self.base_client.session().read().await;
 
             if let Some(session) = session.as_ref() {
-                request_builder.bearer_auth(&session.access_token)
+                let header_value = format!("Bearer {}", &session.access_token);
+                request_builder.header(AUTHORIZATION, header_value)
             } else {
                 return Err(Error::AuthenticationRequired);
             }
@@ -980,7 +991,7 @@ impl Client {
     /// # let homeserver = Url::parse("http://localhost:8080").unwrap();
     /// # let mut client = Client::new(homeserver, None).unwrap();
     /// # let room_id = RoomId::try_from("!test:localhost").unwrap();
-    /// use uuid::Uuid;
+    /// use matrix_sdk_common::uuid::Uuid;
     ///
     /// let content = MessageEventContent::Text(TextMessageEventContent {
     ///     body: "Hello world".to_owned(),
@@ -1203,7 +1214,7 @@ mod test {
     use crate::identifiers::{EventId, RoomId, UserId};
 
     use matrix_sdk_base::JsonStore;
-    use matrix_sdk_test::EventBuilder;
+    use matrix_sdk_test::{EventBuilder, EventsFile};
 
     use mockito::{mock, Matcher};
     use std::convert::TryFrom;
@@ -1250,11 +1261,8 @@ mod test {
         let client = Client::new(homeserver, Some(session)).unwrap();
 
         let mut response = EventBuilder::default()
-            .add_room_event_from_file("../test_data/events/member.json", RoomEvent::RoomMember)
-            .add_room_event_from_file(
-                "../test_data/events/power_levels.json",
-                RoomEvent::RoomPowerLevels,
-            )
+            .add_room_event(EventsFile::Member, RoomEvent::RoomMember)
+            .add_room_event(EventsFile::PowerLevels, RoomEvent::RoomPowerLevels)
             .build_sync_response();
 
         client
@@ -1651,7 +1659,7 @@ mod test {
 
     #[tokio::test]
     async fn room_message_send() {
-        use uuid::Uuid;
+        use matrix_sdk_common::uuid::Uuid;
 
         let homeserver = Url::from_str(&mockito::server_url()).unwrap();
         let user = UserId::try_from("@example:localhost").unwrap();

matrix_sdk/src/lib.rs

@@ -26,8 +26,10 @@
 //! destroyed.
 #![deny(missing_docs)]
 
+#[cfg(not(target_arch = "wasm32"))]
+pub use matrix_sdk_base::JsonStore;
 pub use matrix_sdk_base::{EventEmitter, Room, Session};
-pub use matrix_sdk_base::{JsonStore, RoomState, StateStore};
+pub use matrix_sdk_base::{RoomState, StateStore};
 pub use matrix_sdk_common::*;
 pub use reqwest::header::InvalidHeaderValue;
 

matrix_sdk_base/.cargo/config

@@ -0,0 +1,3 @@
+# required because of https://github.com/rustwasm/wasm-pack/issues/698
+[target.wasm32-unknown-unknown]
+runner = 'wasm-bindgen-test-runner'

matrix_sdk_base/Cargo.toml

@@ -17,7 +17,6 @@ encryption = ["matrix-sdk-crypto"]
 sqlite-cryptostore = ["matrix-sdk-crypto/sqlite-cryptostore"]
 
 [dependencies]
-futures = "0.3.4"
 async-trait = "0.1.30"
 serde = "1.0.106"
 serde_json = "1.0.52"
@@ -28,15 +27,20 @@ matrix-sdk-crypto = { version = "0.1.0", path = "../matrix_sdk_crypto", optional
 # Misc dependencies
 thiserror = "1.0.16"
 
-[dependencies.tokio]
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies.tokio]
 version = "0.2.20"
 default-features = false
 features = ["sync", "fs"]
 
 [dev-dependencies]
 matrix-sdk-test = { version = "0.1.0", path = "../matrix_sdk_test" }
-tokio = { version = "0.2.20", features = ["rt-threaded", "macros"] }
 http = "0.2.1"
 dirs = "2.0.2"
 tracing-subscriber = "0.2.5"
 tempfile = "3.1.0"
+
+[target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]
+tokio = { version = "0.2.20", features = ["rt-threaded", "macros"] }
+
+[target.'cfg(target_arch = "wasm32")'.dev-dependencies]
+wasm-bindgen-test = "0.3.12"

matrix_sdk_base/src/client.rs

@@ -39,10 +39,10 @@ use crate::session::Session;
 use crate::state::{ClientState, StateStore};
 use crate::EventEmitter;
 
-use std::ops::Deref;
 #[cfg(feature = "encryption")]
-use tokio::sync::Mutex;
-use tokio::sync::RwLock;
+use matrix_sdk_common::locks::Mutex;
+use matrix_sdk_common::locks::RwLock;
+use std::ops::Deref;
 
 #[cfg(feature = "encryption")]
 use crate::api::r0::keys::{
@@ -297,7 +297,7 @@ impl BaseClient {
     /// Returns the joined rooms this client knows about.
     ///
     /// A `HashMap` of room id to `matrix::models::Room`
-    pub fn joined_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<tokio::sync::RwLock<Room>>>>> {
+    pub fn joined_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<RwLock<Room>>>>> {
         self.joined_rooms.clone()
     }
 
@@ -331,7 +331,7 @@ impl BaseClient {
     /// Returns the invited rooms this client knows about.
     ///
     /// A `HashMap` of room id to `matrix::models::Room`
-    pub fn invited_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<tokio::sync::RwLock<Room>>>>> {
+    pub fn invited_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<RwLock<Room>>>>> {
         self.invited_rooms.clone()
     }
 
@@ -365,7 +365,7 @@ impl BaseClient {
     /// Returns the left rooms this client knows about.
     ///
     /// A `HashMap` of room id to `matrix::models::Room`
-    pub fn left_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<tokio::sync::RwLock<Room>>>>> {
+    pub fn left_rooms(&self) -> Arc<RwLock<HashMap<RoomId, Arc<RwLock<Room>>>>> {
         self.left_rooms.clone()
     }
 

matrix_sdk_base/src/event_emitter/mod.rs

@@ -168,8 +168,13 @@ pub trait EventEmitter: Send + Sync {
 #[cfg(test)]
 mod test {
     use super::*;
+    use matrix_sdk_common::locks::Mutex;
+    use matrix_sdk_test::{async_test, sync_response, SyncResponseFile};
     use std::sync::Arc;
-    use tokio::sync::Mutex;
+
+    #[cfg(target_arch = "wasm32")]
+    pub use wasm_bindgen_test::*;
+
     #[derive(Clone)]
     pub struct EvEmitterTest(Arc<Mutex<Vec<String>>>);
 
@@ -283,22 +288,10 @@ mod test {
         }
     }
 
-    use crate::api::r0::sync::sync_events::Response as SyncResponse;
     use crate::identifiers::UserId;
     use crate::{BaseClient, Session};
 
-    use http::Response;
     use std::convert::TryFrom;
-    use std::fs::File;
-    use std::io::Read;
-
-    fn sync_response(file: &str) -> SyncResponse {
-        let mut file = File::open(file).unwrap();
-        let mut data = vec![];
-        file.read_to_end(&mut data).unwrap();
-        let response = Response::builder().body(data).unwrap();
-        SyncResponse::try_from(response).unwrap()
-    }
 
     fn get_client() -> BaseClient {
         let session = Session {
@@ -309,7 +302,7 @@ mod test {
         BaseClient::new(Some(session)).unwrap()
     }
 
-    #[tokio::test]
+    #[async_test]
     async fn event_emitter_joined() {
         let vec = Arc::new(Mutex::new(Vec::new()));
         let test_vec = Arc::clone(&vec);
@@ -318,7 +311,7 @@ mod test {
         let client = get_client();
         client.add_event_emitter(emitter).await;
 
-        let mut response = sync_response("../test_data/sync.json");
+        let mut response = sync_response(SyncResponseFile::Default);
         client.receive_sync_response(&mut response).await.unwrap();
 
         let v = test_vec.lock().await;
@@ -340,7 +333,7 @@ mod test {
         )
     }
 
-    #[tokio::test]
+    #[async_test]
     async fn event_emitter_invite() {
         let vec = Arc::new(Mutex::new(Vec::new()));
         let test_vec = Arc::clone(&vec);
@@ -349,7 +342,7 @@ mod test {
         let client = get_client();
         client.add_event_emitter(emitter).await;
 
-        let mut response = sync_response("../test_data/invite_sync.json");
+        let mut response = sync_response(SyncResponseFile::Invite);
         client.receive_sync_response(&mut response).await.unwrap();
 
         let v = test_vec.lock().await;
@@ -359,7 +352,7 @@ mod test {
         )
     }
 
-    #[tokio::test]
+    #[async_test]
     async fn event_emitter_leave() {
         let vec = Arc::new(Mutex::new(Vec::new()));
         let test_vec = Arc::clone(&vec);
@@ -368,7 +361,7 @@ mod test {
         let client = get_client();
         client.add_event_emitter(emitter).await;
 
-        let mut response = sync_response("../test_data/leave_sync.json");
+        let mut response = sync_response(SyncResponseFile::Leave);
         client.receive_sync_response(&mut response).await.unwrap();
 
         let v = test_vec.lock().await;

matrix_sdk_base/src/lib.rs

@@ -41,4 +41,6 @@ pub use event_emitter::EventEmitter;
 #[cfg(feature = "encryption")]
 pub use matrix_sdk_crypto::{Device, TrustState};
 pub use models::Room;
-pub use state::{JsonStore, StateStore};
+#[cfg(not(target_arch = "wasm32"))]
+pub use state::JsonStore;
+pub use state::StateStore;

matrix_sdk_base/src/models/message.rs

@@ -143,6 +143,9 @@ mod test {
     use std::collections::HashMap;
     use std::convert::TryFrom;
 
+    #[cfg(target_arch = "wasm32")]
+    use wasm_bindgen_test::*;
+
     use crate::events::{collections::all::RoomEvent, EventJson};
     use crate::identifiers::{RoomId, UserId};
     use crate::Room;

matrix_sdk_base/src/models/room.rs

@@ -521,27 +521,17 @@ impl Room {
 #[cfg(test)]
 mod test {
     use super::*;
-    use crate::api::r0::sync::sync_events::Response as SyncResponse;
     use crate::events::room::member::MembershipState;
     use crate::identifiers::UserId;
     use crate::{BaseClient, Session};
-    use matrix_sdk_test::EventBuilder;
+    use matrix_sdk_test::{async_test, sync_response, EventBuilder, EventsFile, SyncResponseFile};
 
-    use http::Response;
+    #[cfg(target_arch = "wasm32")]
+    use wasm_bindgen_test::*;
 
     use std::convert::TryFrom;
-    use std::fs::File;
-    use std::io::Read;
     use std::ops::Deref;
 
-    fn sync_response(file: &str) -> SyncResponse {
-        let mut file = File::open(file).unwrap();
-        let mut data = vec![];
-        file.read_to_end(&mut data).unwrap();
-        let response = Response::builder().body(data).unwrap();
-        SyncResponse::try_from(response).unwrap()
-    }
-
     fn get_client() -> BaseClient {
         let session = Session {
             access_token: "1234".to_owned(),
@@ -555,11 +545,11 @@ mod test {
         RoomId::try_from("!SVkFJHzfwvuaIEawgC:localhost").unwrap()
     }
 
-    #[tokio::test]
+    #[async_test]
     async fn user_presence() {
         let client = get_client();
 
-        let mut response = sync_response("../test_data/sync.json");
+        let mut response = sync_response(SyncResponseFile::Default);
 
         client.receive_sync_response(&mut response).await.unwrap();
 
@@ -579,18 +569,15 @@ mod test {
         assert!(room.deref().power_levels.is_some())
     }
 
-    #[tokio::test]
+    #[async_test]
     async fn room_events() {
         let client = get_client();
         let room_id = get_room_id();
         let user_id = UserId::try_from("@example:localhost").unwrap();
 
         let mut response = EventBuilder::default()
-            .add_room_event_from_file("../test_data/events/member.json", RoomEvent::RoomMember)
-            .add_room_event_from_file(
-                "../test_data/events/power_levels.json",
-                RoomEvent::RoomPowerLevels,
-            )
+            .add_room_event(EventsFile::Member, RoomEvent::RoomMember)
+            .add_room_event(EventsFile::PowerLevels, RoomEvent::RoomPowerLevels)
             .build_sync_response();
 
         client.receive_sync_response(&mut response).await.unwrap();
@@ -611,14 +598,14 @@ mod test {
         );
     }
 
-    #[tokio::test]
+    #[async_test]
     async fn calculate_aliases() {
         let client = get_client();
 
         let room_id = get_room_id();
 
         let mut response = EventBuilder::default()
-            .add_state_event_from_file("../test_data/events/aliases.json", StateEvent::RoomAliases)
+            .add_state_event(EventsFile::Aliases, StateEvent::RoomAliases)
             .build_sync_response();
 
         client.receive_sync_response(&mut response).await.unwrap();
@@ -629,17 +616,14 @@ mod test {
         assert_eq!("tutorial", room.display_name());
     }
 
-    #[tokio::test]
+    #[async_test]
     async fn calculate_alias() {
         let client = get_client();
 
         let room_id = get_room_id();
 
         let mut response = EventBuilder::default()
-            .add_state_event_from_file(
-                "../test_data/events/alias.json",
-                StateEvent::RoomCanonicalAlias,
-            )
+            .add_state_event(EventsFile::Alias, StateEvent::RoomCanonicalAlias)
             .build_sync_response();
 
         client.receive_sync_response(&mut response).await.unwrap();
@@ -650,14 +634,14 @@ mod test {
         assert_eq!("tutorial", room.display_name());
     }
 
-    #[tokio::test]
+    #[async_test]
     async fn calculate_name() {
         let client = get_client();
 
         let room_id = get_room_id();
 
         let mut response = EventBuilder::default()
-            .add_state_event_from_file("../test_data/events/name.json", StateEvent::RoomName)
+            .add_state_event(EventsFile::Name, StateEvent::RoomName)
             .build_sync_response();
 
         client.receive_sync_response(&mut response).await.unwrap();
@@ -668,9 +652,9 @@ mod test {
         assert_eq!("room name", room.display_name());
     }
 
-    #[tokio::test]
+    #[async_test]
     async fn calculate_room_names_from_summary() {
-        let mut response = sync_response("../test_data/sync_with_summary.json");
+        let mut response = sync_response(SyncResponseFile::DefaultWithSummary);
 
         let session = Session {
             access_token: "1234".to_owned(),

matrix_sdk_base/src/models/room_member.rs

@@ -199,7 +199,7 @@ impl RoomMember {
 
 #[cfg(test)]
 mod test {
-    use matrix_sdk_test::EventBuilder;
+    use matrix_sdk_test::{async_test, EventBuilder, EventsFile};
 
     use crate::events::collections::all::RoomEvent;
     use crate::events::room::member::MembershipState;
@@ -208,6 +208,9 @@ mod test {
 
     use crate::js_int::Int;
 
+    #[cfg(target_arch = "wasm32")]
+    use wasm_bindgen_test::*;
+
     use std::convert::TryFrom;
 
     fn get_client() -> BaseClient {
@@ -223,18 +226,15 @@ mod test {
         RoomId::try_from("!SVkFJHzfwvuaIEawgC:localhost").unwrap()
     }
 
-    #[tokio::test]
+    #[async_test]
     async fn room_member_events() {
         let client = get_client();
 
         let room_id = get_room_id();
 
         let mut response = EventBuilder::default()
-            .add_room_event_from_file("../test_data/events/member.json", RoomEvent::RoomMember)
-            .add_room_event_from_file(
-                "../test_data/events/power_levels.json",
-                RoomEvent::RoomPowerLevels,
-            )
+            .add_room_event(EventsFile::Member, RoomEvent::RoomMember)
+            .add_room_event(EventsFile::PowerLevels, RoomEvent::RoomPowerLevels)
             .build_sync_response();
 
         client.receive_sync_response(&mut response).await.unwrap();
@@ -250,19 +250,16 @@ mod test {
         assert_eq!(member.power_level, Int::new(100));
     }
 
-    #[tokio::test]
+    #[async_test]
     async fn member_presence_events() {
         let client = get_client();
 
         let room_id = get_room_id();
 
         let mut response = EventBuilder::default()
-            .add_room_event_from_file("../test_data/events/member.json", RoomEvent::RoomMember)
-            .add_room_event_from_file(
-                "../test_data/events/power_levels.json",
-                RoomEvent::RoomPowerLevels,
-            )
-            .add_presence_event_from_file("../test_data/events/presence.json")
+            .add_room_event(EventsFile::Member, RoomEvent::RoomMember)
+            .add_room_event(EventsFile::PowerLevels, RoomEvent::RoomPowerLevels)
+            .add_presence_event(EventsFile::Presence)
             .build_sync_response();
 
         client.receive_sync_response(&mut response).await.unwrap();

matrix_sdk_base/src/state/mod.rs

@@ -16,7 +16,9 @@
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 
+#[cfg(not(target_arch = "wasm32"))]
 pub mod state_store;
+#[cfg(not(target_arch = "wasm32"))]
 pub use state_store::JsonStore;
 
 use crate::client::{BaseClient, Token};

matrix_sdk_base/src/state/state_store.rs

@@ -6,9 +6,9 @@ use std::sync::{
     Arc,
 };
 
+use matrix_sdk_common::locks::RwLock;
 use tokio::fs as async_fs;
 use tokio::io::AsyncWriteExt;
-use tokio::sync::RwLock;
 
 use super::{ClientState, StateStore};
 use crate::identifiers::RoomId;

matrix_sdk_common/Cargo.toml

@@ -16,3 +16,15 @@ ruma-api = "0.16.0"
 ruma-client-api = "0.8.0"
 ruma-events = "0.21.0"
 ruma-identifiers = "0.16.1"
+
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+uuid = { version = "0.8.1", features = ["v4"] }
+
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies.tokio]
+version = "0.2.20"
+default-features = false
+features = ["sync", "time", "fs"]
+
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+futures-locks = { git = "https://github.com/asomers/futures-locks", default-features = false }
+uuid = { version = "0.8.1", features = ["v4", "wasm-bindgen"] }

matrix_sdk_common/src/lib.rs

@@ -6,3 +6,7 @@ pub use ruma_api::{
 pub use ruma_client_api as api;
 pub use ruma_events as events;
 pub use ruma_identifiers as identifiers;
+
+pub use uuid;
+
+pub mod locks;

matrix_sdk_common/src/locks.rs

@@ -0,0 +1,13 @@
+// could switch to futures-lock completely at some point, blocker:
+// https://github.com/asomers/futures-locks/issues/34
+// https://www.reddit.com/r/rust/comments/f4zldz/i_audited_3_different_implementation_of_async/
+
+#[cfg(target_arch = "wasm32")]
+pub use futures_locks::Mutex;
+#[cfg(target_arch = "wasm32")]
+pub use futures_locks::RwLock;
+
+#[cfg(not(target_arch = "wasm32"))]
+pub use tokio::sync::Mutex;
+#[cfg(not(target_arch = "wasm32"))]
+pub use tokio::sync::RwLock;

matrix_sdk_crypto/Cargo.toml

@@ -15,7 +15,6 @@ default = []
 sqlite-cryptostore = ["sqlx"]
 
 [dependencies]
-futures = "0.3.4"
 async-trait = "0.1.30"
 
 matrix-sdk-common = { version = "0.1.0", path = "../matrix_sdk_common" }
@@ -23,9 +22,8 @@ matrix-sdk-common = { version = "0.1.0", path = "../matrix_sdk_common" }
 olm-rs = { version = "0.5.0", features = ["serde"] }
 serde = { version = "1.0.106", features = ["derive"] }
 serde_json = "1.0.52"
-cjson = "0.1.0"
+cjson = { git = "https://github.com/stoically/cjson", rev = "24a82d94e339e27a62434493869f3dce62c60e0d" }
 zeroize = { version = "1.1.0", features = ["zeroize_derive"] }
-uuid = { version = "0.8.1", features = ["v4"] }
 url = "2.1.1"
 
 # Misc dependencies
@@ -39,12 +37,7 @@ version = "0.2.4"
 default-features = false
 features = ["std", "std-future"]
 
-[dependencies.tokio]
-version = "0.2.20"
-default-features = false
-features = ["sync", "time"]
-
-[dependencies.sqlx]
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies.sqlx]
 version = "0.3.5"
 optional = true
 default-features = false

matrix_sdk_crypto/src/machine.rs

@@ -19,7 +19,6 @@ use std::mem;
 use std::path::Path;
 use std::result::Result as StdResult;
 use std::sync::atomic::{AtomicU64, Ordering};
-use uuid::Uuid;
 
 use super::error::{EventError, MegolmError, MegolmResult, OlmError, OlmResult, SignatureError};
 use super::olm::{
@@ -46,6 +45,7 @@ use matrix_sdk_common::events::{
     Algorithm, EventJson, EventType,
 };
 use matrix_sdk_common::identifiers::{DeviceId, RoomId, UserId};
+use matrix_sdk_common::uuid::Uuid;
 
 use api::r0::keys;
 use api::r0::{

matrix_sdk_crypto/src/memory_stores.rs

@@ -16,7 +16,7 @@ use std::collections::HashMap;
 use std::sync::Arc;
 
 use dashmap::{DashMap, ReadOnlyView};
-use tokio::sync::Mutex;
+use matrix_sdk_common::locks::Mutex;
 
 use super::device::Device;
 use super::olm::{InboundGroupSession, Session};

matrix_sdk_crypto/src/olm.rs

@@ -18,8 +18,8 @@ use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
 use std::sync::Arc;
 use std::time::Instant;
 
+use matrix_sdk_common::locks::Mutex;
 use serde::Serialize;
-use tokio::sync::Mutex;
 use zeroize::Zeroize;
 
 pub use olm_rs::account::IdentityKeys;

matrix_sdk_crypto/src/store/memorystore.rs

@@ -16,7 +16,7 @@ use std::collections::HashSet;
 use std::sync::Arc;
 
 use async_trait::async_trait;
-use tokio::sync::Mutex;
+use matrix_sdk_common::locks::Mutex;
 
 use super::{Account, CryptoStore, InboundGroupSession, Result, Session};
 use crate::device::Device;

matrix_sdk_crypto/src/store/mod.rs

@@ -19,9 +19,9 @@ use std::sync::Arc;
 use url::ParseError;
 
 use async_trait::async_trait;
+use matrix_sdk_common::locks::Mutex;
 use serde_json::Error as SerdeError;
 use thiserror::Error;
-use tokio::sync::Mutex;
 
 use super::device::Device;
 use super::memory_stores::UserDevices;

matrix_sdk_crypto/src/store/sqlite.rs

@@ -22,9 +22,9 @@ use std::time::{Duration, Instant};
 use url::Url;
 
 use async_trait::async_trait;
+use matrix_sdk_common::locks::Mutex;
 use olm_rs::PicklingMode;
 use sqlx::{query, query_as, sqlite::SqliteQueryAs, Connect, Executor, SqliteConnection};
-use tokio::sync::Mutex;
 use zeroize::Zeroizing;
 
 use super::{Account, CryptoStore, CryptoStoreError, InboundGroupSession, Result, Session};

matrix_sdk_test/Cargo.toml

@@ -14,3 +14,4 @@ version = "0.1.0"
 serde_json = "1.0.52"
 http = "0.2.1"
 matrix-sdk-common = { version = "0.1.0", path = "../matrix_sdk_common" }
+matrix-sdk-test-macros = { path = "../matrix_sdk_test_macros" }

matrix_sdk_test/src/lib.rs

@@ -1,7 +1,5 @@
 use std::convert::TryFrom;
-use std::fs;
 use std::panic;
-use std::path::Path;
 
 use http::Response;
 
@@ -15,6 +13,34 @@ use matrix_sdk_common::events::{
     EventJson, TryFromRaw,
 };
 
+pub use matrix_sdk_test_macros::async_test;
+
+/// Embedded event files
+#[derive(Debug)]
+pub enum EventsFile {
+    Alias,
+    Aliases,
+    Create,
+    FullyRead,
+    HistoryVisibility,
+    JoinRules,
+    Member,
+    MessageEmote,
+    MessageNotice,
+    MessageText,
+    Name,
+    PowerLevels,
+    Presence,
+    RedactedInvalid,
+    RedactedState,
+    Redacted,
+    Redaction,
+    RoomAvatar,
+    Tag,
+    Topic,
+    Typing,
+}
+
 /// Easily create events to stream into either a Client or a `Room` for testing.
 #[derive(Default)]
 pub struct EventBuilder {
@@ -32,13 +58,16 @@ pub struct EventBuilder {
 
 impl EventBuilder {
     /// Add an event to the room events `Vec`.
-    pub fn add_ephemeral_from_file<Ev: TryFromRaw, P: AsRef<Path>>(
+    pub fn add_ephemeral<Ev: TryFromRaw>(
         mut self,
-        path: P,
+        file: EventsFile,
         variant: fn(Ev) -> Event,
     ) -> Self {
-        let val = fs::read_to_string(path.as_ref())
-            .unwrap_or_else(|_| panic!("file not found {:?}", path.as_ref()));
+        let val: &str = match file {
+            EventsFile::Typing => include_str!("../../test_data/events/typing.json"),
+            _ => panic!("unknown ephemeral event file {:?}", file),
+        };
+
         let event = serde_json::from_str::<EventJson<Ev>>(&val)
             .unwrap()
             .deserialize()
@@ -48,13 +77,16 @@ impl EventBuilder {
     }
 
     /// Add an event to the room events `Vec`.
-    pub fn add_account_from_file<Ev: TryFromRaw, P: AsRef<Path>>(
+    #[allow(clippy::match_single_binding, unused)]
+    pub fn add_account<Ev: TryFromRaw>(
         mut self,
-        path: P,
+        file: EventsFile,
         variant: fn(Ev) -> Event,
     ) -> Self {
-        let val = fs::read_to_string(path.as_ref())
-            .unwrap_or_else(|_| panic!("file not found {:?}", path.as_ref()));
+        let val: &str = match file {
+            _ => panic!("unknown account event file {:?}", file),
+        };
+
         let event = serde_json::from_str::<EventJson<Ev>>(&val)
             .unwrap()
             .deserialize()
@@ -64,13 +96,17 @@ impl EventBuilder {
     }
 
     /// Add an event to the room events `Vec`.
-    pub fn add_room_event_from_file<Ev: TryFromRaw, P: AsRef<Path>>(
+    pub fn add_room_event<Ev: TryFromRaw>(
         mut self,
-        path: P,
+        file: EventsFile,
         variant: fn(Ev) -> RoomEvent,
     ) -> Self {
-        let val = fs::read_to_string(path.as_ref())
-            .unwrap_or_else(|_| panic!("file not found {:?}", path.as_ref()));
+        let val = match file {
+            EventsFile::Member => include_str!("../../test_data/events/member.json"),
+            EventsFile::PowerLevels => include_str!("../../test_data/events/power_levels.json"),
+            _ => panic!("unknown room event file {:?}", file),
+        };
+
         let event = serde_json::from_str::<EventJson<Ev>>(&val)
             .unwrap()
             .deserialize()
@@ -80,13 +116,18 @@ impl EventBuilder {
     }
 
     /// Add a state event to the state events `Vec`.
-    pub fn add_state_event_from_file<Ev: TryFromRaw, P: AsRef<Path>>(
+    pub fn add_state_event<Ev: TryFromRaw>(
         mut self,
-        path: P,
+        file: EventsFile,
         variant: fn(Ev) -> StateEvent,
     ) -> Self {
-        let val = fs::read_to_string(path.as_ref())
-            .unwrap_or_else(|_| panic!("file not found {:?}", path.as_ref()));
+        let val = match file {
+            EventsFile::Alias => include_str!("../../test_data/events/alias.json"),
+            EventsFile::Aliases => include_str!("../../test_data/events/aliases.json"),
+            EventsFile::Name => include_str!("../../test_data/events/name.json"),
+            _ => panic!("unknown state event file {:?}", file),
+        };
+
         let event = serde_json::from_str::<EventJson<Ev>>(&val)
             .unwrap()
             .deserialize()
@@ -95,10 +136,13 @@ impl EventBuilder {
         self
     }
 
-    /// Add a presence event to the presence events `Vec`.
-    pub fn add_presence_event_from_file<P: AsRef<Path>>(mut self, path: P) -> Self {
-        let val = fs::read_to_string(path.as_ref())
-            .unwrap_or_else(|_| panic!("file not found {:?}", path.as_ref()));
+    /// Add an presence event to the presence events `Vec`.
+    pub fn add_presence_event(mut self, file: EventsFile) -> Self {
+        let val = match file {
+            EventsFile::Presence => include_str!("../../test_data/events/presence.json"),
+            _ => panic!("unknown presence event file {:?}", file),
+        };
+
         let event = serde_json::from_str::<EventJson<PresenceEvent>>(&val)
             .unwrap()
             .deserialize()
@@ -158,3 +202,26 @@ impl EventBuilder {
         SyncResponse::try_from(response).unwrap()
     }
 }
+
+/// Embedded sync reponse files
+pub enum SyncResponseFile {
+    Default,
+    DefaultWithSummary,
+    Invite,
+    Leave,
+}
+
+/// Get specific API responses for testing
+pub fn sync_response(kind: SyncResponseFile) -> SyncResponse {
+    let data = match kind {
+        SyncResponseFile::Default => include_bytes!("../../test_data/sync.json").to_vec(),
+        SyncResponseFile::DefaultWithSummary => {
+            include_bytes!("../../test_data/sync_with_summary.json").to_vec()
+        }
+        SyncResponseFile::Invite => include_bytes!("../../test_data/invite_sync.json").to_vec(),
+        SyncResponseFile::Leave => include_bytes!("../../test_data/leave_sync.json").to_vec(),
+    };
+
+    let response = Response::builder().body(data.to_vec()).unwrap();
+    SyncResponse::try_from(response).unwrap()
+}

matrix_sdk_test_macros/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+authors = ["stoically <stoically@protonmail.com>"]
+description = "Helper macros to write tests for the Matrix SDK"
+edition = "2018"
+homepage = "https://github.com/matrix-org/matrix-rust-sdk"
+keywords = ["matrix", "chat", "messaging", "ruma"]
+license = "Apache-2.0"
+name = "matrix-sdk-test-macros"
+readme = "README.md"
+repository = "https://github.com/matrix-org/matrix-rust-sdk"
+version = "0.1.0"
+
+[lib]
+proc-macro = true

matrix_sdk_test_macros/src/lib.rs

@@ -0,0 +1,14 @@
+use proc_macro::TokenStream;
+
+/// Attribute to use `wasm_bindgen_test` for wasm32 targets and `tokio::test` for everything else
+#[proc_macro_attribute]
+pub fn async_test(_attr: TokenStream, item: TokenStream) -> TokenStream {
+    let attrs = r#"
+        #[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
+        #[cfg_attr(not(target_arch = "wasm32"), tokio::test)]
+    "#;
+
+    let mut out: TokenStream = attrs.parse().unwrap();
+    out.extend(item);
+    out
+}