chore: ensure webassembly test can compile to non-wasm target

aws/sdk/integration-tests/webassembly/Cargo.toml

@@ -16,16 +16,14 @@ publish = false
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
-[dependencies]
-anyhow = "1.0"
+[target.'cfg(target_family = "wasm")'.dependencies]
 aws-config = { path = "../../build/aws-sdk/sdk/aws-config", default-features = false, features = [
     "rt-tokio",
 ] }
 aws-sdk-s3 = { path = "../../build/aws-sdk/sdk/s3", default-features = false }
 aws-smithy-types = { path = "../../build/aws-sdk/sdk/aws-smithy-types" }
 aws-smithy-wasm = { path = "../../build/aws-sdk/sdk/aws-smithy-wasm" }
-futures = "0.3.28"
-http = "0.2.8"
 tokio = { version = "1.32.0", features = ["macros", "rt"] }
-tower = "0.4.13"
+
+[target.'cfg(all(target_family = "wasm", target_os = "wasi"))'.dependencies]
 wit-bindgen = { version = "0.11.0", features = ["macros", "realloc"] }

aws/sdk/integration-tests/webassembly/src/lib.rs

@@ -5,30 +5,9 @@
 
 #![allow(dead_code)]
 
+#[cfg(target_family = "wasm")]
 mod default_config;
+#[cfg(target_family = "wasm")]
 mod list_objects;
-
-wit_bindgen::generate!({
-    inline: "
-        package aws:component
-
-        interface run {
-            run: func() -> result
-        }
-
-        world main {
-            export run
-        }
-    ",
-    exports: {
-        "aws:component/run": Component
-    }
-});
-
-struct Component;
-
-impl exports::aws::component::run::Guest for Component {
-    fn run() -> Result<(), ()> {
-        Ok(())
-    }
-}
+#[cfg(all(target_family = "wasm", target_os = "wasi"))]
+mod wasi;

aws/sdk/integration-tests/webassembly/src/list_objects.rs

@@ -6,8 +6,8 @@
 use aws_sdk_s3::operation::list_objects_v2::ListObjectsV2Output;
 
 async fn s3_list_objects() -> ListObjectsV2Output {
-    use aws_sdk_s3::Client;
     use crate::default_config::get_default_config;
+    use aws_sdk_s3::Client;
 
     let shared_config = get_default_config().await;
     let client = Client::new(&shared_config);

aws/sdk/integration-tests/webassembly/src/wasi.rs

@@ -0,0 +1,32 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+// Needed for WASI-compliant environment as it expects specific functions
+// to be exported such as `cabi_realloc`, `_start`, etc.
+
+wit_bindgen::generate!({
+    inline: "
+        package aws:component
+
+        interface run {
+            run: func() -> result
+        }
+
+        world main {
+            export run
+        }
+    ",
+    exports: {
+        "aws:component/run": Component
+    }
+});
+
+struct Component;
+
+impl exports::aws::component::run::Guest for Component {
+    fn run() -> Result<(), ()> {
+        Ok(())
+    }
+}

tools/ci-scripts/check-aws-sdk-standalone-integration-tests

@@ -42,6 +42,6 @@ cargo check --tests
 
 # Running WebAssembly (WASI) specific integration tests
 pushd "${tmp_dir}/aws/sdk/integration-tests/webassembly" &>/dev/null
-cargo build
+cargo check --tests
 cargo test -- --nocapture
 popd