Impl 'TryFrom<&str>' for 'Method'.

Also implements 'From<Infallible>' for 'ParseMethodError'.

core/http/src/method.rs

@@ -316,6 +316,12 @@ pub struct ParseMethodError;
 
 impl std::error::Error for ParseMethodError { }
 
+impl From<std::convert::Infallible> for ParseMethodError {
+    fn from(infallible: std::convert::Infallible) -> Self {
+        match infallible {}
+    }
+}
+
 impl fmt::Display for ParseMethodError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         f.write_str("invalid HTTP method")
@@ -331,6 +337,14 @@ impl FromStr for Method {
     }
 }
 
+impl TryFrom<&str> for Method {
+    type Error = ParseMethodError;
+
+    fn try_from(s: &str) -> Result<Self, Self::Error> {
+        Self::try_from(s.as_bytes())
+    }
+}
+
 impl AsRef<str> for Method {
     fn as_ref(&self) -> &str {
         self.as_str()

testbench/src/lib.rs

@@ -32,6 +32,4 @@ pub enum Error {
     Ipc(#[from] ipc_channel::ipc::IpcError),
     #[error("liftoff failed")]
     Liftoff(String, String),
-    #[error("invalid method")]
-    InvalidMethod,
 }