port over all tests

crates/async-std-resolver/src/runtime.rs

@@ -0,0 +1,86 @@
+// Copyright 2015-2020 Benjamin Fry <benjaminfry@me.com>
+//
+// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
+// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
+// http://opensource.org/licenses/MIT>, at your option. This file may not be
+// copied, modified, or distributed except according to those terms.
+
+use std::future::Future;
+
+use trust_dns_resolver::proto::error::ProtoError;
+use trust_dns_resolver::proto::Executor;
+
+use trust_dns_resolver::name_server::{
+    GenericConnection, GenericConnectionProvider, RuntimeProvider, Spawn,
+};
+
+use crate::net::{AsyncStdTcpStream, AsyncStdUdpSocket};
+use crate::time::AsyncStdTime;
+
+/// The async_std runtime.
+///
+/// The runtime provides an I/O [driver], task scheduler, [timer], and blocking
+/// pool, necessary for running asynchronous tasks.
+///
+/// Instances of `AsyncStdRuntime` can be created using [`new`]. However, most
+/// users will use the `#[async_std::main]` annotation on their entry point instead.
+///
+/// See [module level][mod] documentation for more details.
+///
+/// # Shutdown
+///
+/// Shutting down the runtime is done by dropping the value. The current thread
+/// will block until the shut down operation has completed.
+///
+/// * Drain any scheduled work queues.
+/// * Drop any futures that have not yet completed.
+/// * Drop the reactor.
+///
+/// Once the reactor has dropped, any outstanding I/O resources bound to
+/// that reactor will no longer function. Calling any method on them will
+/// result in an error.
+///
+/// [driver]: crate::io::driver
+/// [timer]: crate::time
+/// [mod]: index.html
+/// [`new`]: #method.new
+#[derive(Clone)]
+pub struct AsyncStdRuntime;
+
+impl Executor for AsyncStdRuntime {
+    fn new() -> Self {
+        AsyncStdRuntime {}
+    }
+
+    fn block_on<F: Future>(&mut self, future: F) -> F::Output {
+        async_std::task::block_on(future)
+    }
+}
+
+#[derive(Clone)]
+pub struct AsyncStdRuntimeHandle;
+impl Spawn for AsyncStdRuntimeHandle {
+    fn spawn_bg<F>(&mut self, future: F)
+    where
+        F: Future<Output = Result<(), ProtoError>> + Send + 'static,
+    {
+        let _join = async_std::task::spawn(future);
+    }
+}
+
+impl RuntimeProvider for AsyncStdRuntime {
+    type Handle = AsyncStdRuntimeHandle;
+    type Tcp = AsyncStdTcpStream;
+    type Timer = AsyncStdTime;
+    type Udp = AsyncStdUdpSocket;
+}
+
+impl AsyncStdRuntime {
+    #[cfg(test)]
+    pub(crate) fn handle(&self) -> AsyncStdRuntimeHandle {
+        AsyncStdRuntimeHandle
+    }
+}
+
+pub type AsyncStdConnection = GenericConnection;
+pub type AsyncStdConnectionProvider = GenericConnectionProvider<AsyncStdRuntime>;