Set the arguments for components as well

cli/tests/integration/args.rs

@@ -1,5 +1,6 @@
 use crate::common::{Test, TestResult};
 use hyper::{body::to_bytes, StatusCode};
+
 /// Run a program that tests its args. This checks that we're populating the argument list with the
 /// singleton "compute-app" value.
 /// Check that an empty response is sent downstream by default.
@@ -18,3 +19,22 @@ async fn empty_ok_response_by_default_after_args() -> TestResult {
 
     Ok(())
 }
+
+/// Run a program that tests its args. This checks that we're populating the argument list with the
+/// singleton "compute-app" value.
+/// Check that an empty response is sent downstream by default.
+///
+/// `args.wasm` is a guest program checks its cli args.
+#[tokio::test(flavor = "multi_thread")]
+async fn empty_ok_response_by_default_after_args_component() -> TestResult {
+    let resp = Test::using_fixture("args.wasm").adapt_component().against_empty().await?;
+
+    assert_eq!(resp.status(), StatusCode::OK);
+    assert!(to_bytes(resp.into_body())
+        .await
+        .expect("can read body")
+        .to_vec()
+        .is_empty());
+
+    Ok(())
+}

lib/src/execute.rs

@@ -454,8 +454,10 @@ impl ExecuteCtx {
                 let req = session.downstream_request();
                 let body = session.downstream_request_body();
 
-                let mut store = ComponentCtx::create_store(&self, session, None, |_| {})
-                    .map_err(ExecutionError::Context)?;
+                let mut store = ComponentCtx::create_store(&self, session, None, |ctx| {
+                    ctx.arg("compute-app");
+                })
+                .map_err(ExecutionError::Context)?;
 
                 let (compute, _instance) =
                     compute::Compute::instantiate_pre(&mut store, instance_pre)