refactor: Update test_func code

- Rust Edition 2021
- Latest lambda_runtime
- tokio for async support

Author: jerusdp

tests/test-func/Cargo.lock

@@ -1,7 +1,7 @@
 [package]
 name = "test-func"
-version = "0.1.0"
-authors = ["softprops <d.tangren@gmail.com>"]
+version = "0.2.0"
+authors = ["softprops <d.tangren@gmail.com>", "jerusdp <jrussell@jerus.ie>"]
 edition = "2021"
 
 # users don't have to do this
@@ -11,5 +11,6 @@ name = "bootstrap"
 path = "src/main.rs"
 
 [dependencies]
-lambda_runtime = "0.4.1"
-serde_json = "1.0"
+lambda_runtime = "0.4"
+serde_json = "1.0"
+tokio = "1.14"

tests/test-func/Cargo.toml

@@ -1,13 +1,12 @@
-use lambda_runtime::{error::HandlerError, lambda, Context};
+use lambda_runtime::{Error,Context};
 use serde_json::Value;
 
-fn main() {
-    lambda!(handler)
+#[tokio::main]
+async fn main() -> Result<(), Error> {
+    lambda_runtime::run(lambda_runtime::handler_fn(handler)).await?;
+    Ok(())
 }
 
-fn handler(
-    event: Value,
-    _: Context,
-) -> Result<Value, HandlerError> {
+async fn handler(event: Value, _: Context) -> Result<Value, Error> {
     Ok(event)
-}
+}