Improved `IFError`, wrote `TestInterface` and some tests for `Transport`

Cargo.lock

@@ -65,6 +65,15 @@ version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9d6f2aa4d0537bcc1c74df8755072bd31c1ef1a3a1b85a68e8404a8c353b7b8b"
 
+[[package]]
+name = "core-error"
+version = "0.0.1-rc4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7851bcb61e74ebcf5f2f1f1ee119f647c03fec697768bbcc86c26654fd21f977"
+dependencies = [
+ "version_check",
+]
+
 [[package]]
 name = "crossbeam-channel"
 version = "0.5.1"
@@ -214,6 +223,7 @@ dependencies = [
 name = "ironforce"
 version = "0.1.0"
 dependencies = [
+ "core-error",
  "rand",
  "rand_os",
  "rayon",

Cargo.toml

@@ -18,6 +18,7 @@ rand = "*"
 rsa = { version = "0.5", features = ["serde"] }
 serde = { version = "1.0", features = ["derive", "alloc"], default-features = false }
 rayon = { version = "1.5.1", optional = true }
+core-error = "0.0.1-rc4"
 
 [profile.dev.package.num-bigint-dig]
 opt-level = 3

src/crypto.rs

@@ -74,6 +74,9 @@ fn test_encrypt() {
     );
 }
 
+#[cfg(test)]
+use alloc::vec;
+
 #[test]
 fn test_invalid_encrypt() {
     let data = vec![0, 5, 8, 135, 67];

src/interface.rs

@@ -12,6 +12,7 @@ pub(crate) type TargetingData = String;
 /// In an std environment we require that the interface can be send safely between threads
 #[cfg(not(std))]
 pub trait InterfaceRequirements {}
+
 #[cfg(std)]
 pub trait InterfaceRequirements = Send + Sync;
 
@@ -39,3 +40,39 @@ pub trait Interface: InterfaceRequirements {
     /// The implementations of this function shouldn't wait for new messages, but
     fn receive(&mut self) -> IFResult<Option<(MessageBytes, TargetingData /*interface data*/)>>;
 }
+
+#[cfg(test)]
+pub mod test_interface {
+    use crate::interface::{Interface, InterfaceRequirements, TargetingData};
+    use crate::message::MessageBytes;
+    use crate::res::IFResult;
+    use alloc::vec::Vec;
+
+    #[derive(Default)]
+    pub struct TestInterface {
+        messages: Vec<(Vec<u8>, TargetingData)>,
+    }
+
+    impl InterfaceRequirements for TestInterface {}
+
+    impl Interface for TestInterface {
+        fn main_loop_iteration(&mut self) -> IFResult<()> {
+            Ok(())
+        }
+
+        fn id(&self) -> &str {
+            "test_interface"
+        }
+
+        fn send(&mut self, message: &[u8], interface_data: Option<TargetingData>) -> IFResult<()> {
+            self.messages.push((Vec::from(message), interface_data.unwrap_or_default()));
+            Ok(())
+        }
+
+        fn receive(&mut self) -> IFResult<Option<(MessageBytes, TargetingData)>> {
+            Ok(
+                self.messages.pop()
+            )
+        }
+    }
+}

src/lib.rs

@@ -4,6 +4,7 @@
 extern crate alloc;
 extern crate rand;
 extern crate rsa;
+extern crate core_error;
 
 mod crypto;
 mod ironforce;

src/res.rs

@@ -3,13 +3,14 @@ use alloc::string::String;
 use core::fmt::Debug;
 
 /// An enum for all errors that may occur
+#[derive(Clone, PartialEq, Debug)]
 pub enum IFError {
     /// An error that was created in some dependency and then converted to `IFError`
     General(String),
 }
 
 
-impl<T: Debug> From<T> for IFError {
+impl<T: Debug + core_error::Error> From<T> for IFError {
     /// Convert from other error
     fn from(e: T) -> Self {
         Self::General(format!("{:?}", e))

src/transport.rs

@@ -1,6 +1,7 @@
 use alloc::boxed::Box;
 use alloc::string::String;
 use alloc::vec::Vec;
+use alloc::vec;
 use crate::interface::{Interface, TargetingData};
 use crate::message::MessageBytes;
 use crate::res::IFResult;
@@ -10,7 +11,7 @@ use rayon::prelude::*;
 
 
 /// An identification of a peer - something that we can use to send a message to id
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, PartialEq)]
 pub struct PeerInfo {
     /// Something to locally identify this peer
     pub peer_id: u64,
@@ -38,6 +39,11 @@ pub struct Transport {
 }
 
 impl Transport {
+    /// Create new transport with given interfaces
+    pub fn new(interfaces: Vec<Box<dyn Interface>>) -> Self {
+        Self { interfaces, peers: vec![] }
+    }
+
     /// Find a peer in `self.peers` by its id
     fn get_peer_by_id(&self, peer_id: u64) -> Option<PeerInfo> {
         self.peers.iter().find(|peer| peer.peer_id == peer_id).cloned()
@@ -93,3 +99,35 @@ impl Transport {
         }
     }
 }
+
+#[cfg(test)]
+use crate::interface::test_interface::TestInterface;
+#[cfg(test)]
+use alloc::string::ToString;
+
+#[test]
+fn test_adding_peer_to_transport() {
+    let mut transport = Transport::new(vec![Box::new(TestInterface::default())]);
+    let (interface_id, interface_targeting_data) = ("test_interface".to_string(), "hi".to_string());
+    assert!(transport.get_peer_by_parameters(interface_id.as_str(), interface_targeting_data.as_str()).is_none());
+    let peer_id = transport.find_or_add_peer(interface_id.clone(), interface_targeting_data.clone());
+    let peer = PeerInfo {
+        peer_id,
+        interface_id: interface_id.clone(),
+        interface_targeting_data: interface_targeting_data.clone(),
+    };
+    assert_eq!(transport.get_peer_by_parameters(interface_id.as_str(), interface_targeting_data.as_str()), Some(&peer));
+    assert_eq!(transport.get_peer_by_id(peer_id), Some(peer));
+}
+
+#[test]
+fn test_transport_sending() {
+    let mut transport = Transport::new(vec![Box::new(TestInterface::default())]);
+    let (interface_id, interface_targeting_data) = ("test_interface".to_string(), "hi".to_string());
+    let peer_id = transport.find_or_add_peer(interface_id.clone(), interface_targeting_data.clone());
+    transport.send_message(vec![239, 123], None).unwrap();
+    assert_eq!(transport.interfaces[0].receive().unwrap(), Some((vec![239u8, 123], "".to_string())));
+    assert!(transport.interfaces[0].receive() == IFResult::Ok(None));
+    transport.send_message(vec![239, 123], Some(peer_id)).unwrap();
+    assert_eq!(transport.interfaces[0].receive(), IFResult::Ok(Some((vec![239, 123], interface_targeting_data))));
+}