plugin: fix rust pdk wit template probes

crates/plugin-pdk/tests/template.rs

@@ -1,3 +1,7 @@
+use std::fs;
+use std::path::Path;
+use std::process::Command;
+
 use toml::Value;
 
 const TEMPLATE_CARGO: &str =
@@ -15,6 +19,7 @@ const PDK_CARGO: &str = include_str!("../Cargo.toml");
 fn rust_component_tool_template_has_expected_files() {
     let cargo: Value = toml::from_str(TEMPLATE_CARGO).expect("template Cargo.toml parses");
     assert_eq!(cargo["package"]["edition"].as_str(), Some("2024"));
+    assert!(cargo["workspace"].is_table());
     assert_eq!(cargo["lib"]["crate-type"][0].as_str(), Some("cdylib"));
     assert_eq!(
         cargo["dependencies"]["yoi-plugin-pdk"]["path"].as_str(),
@@ -31,7 +36,10 @@ fn rust_component_tool_template_has_expected_files() {
     );
     assert!(plugin["tools"].as_array().expect("tools array").len() == 1);
 
-    assert!(TEMPLATE_LIB.contains("yoi_plugin_pdk::wit_bindgen::generate!"));
+    assert!(TEMPLATE_LIB.contains("use yoi_plugin_pdk::wit_bindgen"));
+    assert!(TEMPLATE_LIB.contains("wit_bindgen::generate!"));
+    assert!(TEMPLATE_LIB.contains("generate_all"));
+    assert!(TEMPLATE_LIB.contains("runtime_path: \"yoi_plugin_pdk::wit_bindgen::rt\""));
     assert!(TEMPLATE_LIB.contains("yoi_plugin_pdk::export_component_tool!"));
     assert!(TEMPLATE_LIB.contains("ToolOutput::json"));
     assert!(TEMPLATE_README.contains("Component Model Tool Plugin"));
@@ -39,11 +47,47 @@ fn rust_component_tool_template_has_expected_files() {
 
 #[test]
 fn documented_sample_uses_pdk_component_path() {
-    assert!(SAMPLE_LIB.contains("yoi_plugin_pdk::wit_bindgen::generate!"));
+    assert!(SAMPLE_LIB.contains("use yoi_plugin_pdk::wit_bindgen"));
+    assert!(SAMPLE_LIB.contains("wit_bindgen::generate!"));
+    assert!(SAMPLE_LIB.contains("generate_all"));
+    assert!(SAMPLE_LIB.contains("runtime_path: \"yoi_plugin_pdk::wit_bindgen::rt\""));
     assert!(SAMPLE_LIB.contains("yoi_plugin_pdk::export_component_tool!"));
     assert!(!SAMPLE_LIB.contains("export_name"));
 }
 
+#[test]
+fn embedded_template_cargo_checks_for_wasm_target() {
+    let crate_dir = Path::new(env!("CARGO_MANIFEST_DIR"));
+    let template_dir = crate_dir.join("../../resources/plugin/templates/rust-component-tool");
+    let manifest_path = template_dir.join("Cargo.toml");
+    let lock_path = template_dir.join("Cargo.lock");
+    let _ = fs::remove_file(&lock_path);
+
+    let target_dir = tempfile::tempdir().expect("temporary cargo target dir");
+    let cargo = std::env::var("CARGO").unwrap_or_else(|_| "cargo".to_string());
+    let output = Command::new(cargo)
+        .arg("check")
+        .arg("--manifest-path")
+        .arg(&manifest_path)
+        .arg("--target")
+        .arg("wasm32-unknown-unknown")
+        .arg("--offline")
+        .arg("--target-dir")
+        .arg(target_dir.path())
+        .env("CARGO_TERM_COLOR", "never")
+        .output()
+        .expect("spawn cargo check for embedded template");
+
+    let _ = fs::remove_file(&lock_path);
+    assert!(
+        output.status.success(),
+        "template cargo check failed\nstatus: {}\nstdout:\n{}\nstderr:\n{}",
+        output.status,
+        String::from_utf8_lossy(&output.stdout),
+        String::from_utf8_lossy(&output.stderr)
+    );
+}
+
 #[test]
 fn pdk_runtime_dependencies_are_guest_side_only() {
     let cargo: Value = toml::from_str(PDK_CARGO).expect("PDK Cargo.toml parses");

crates/plugin-pdk/tests/wit_bindgen_probe.rs

@@ -0,0 +1,25 @@
+use yoi_plugin_pdk::wit_bindgen;
+
+wit_bindgen::generate!({
+    world: "tool",
+    path: "../../resources/plugin/wit",
+    generate_all,
+    runtime_path: "yoi_plugin_pdk::wit_bindgen::rt",
+});
+
+struct Probe;
+
+impl Guest for Probe {
+    fn call(tool_name: String, input_json: String) -> String {
+        yoi_plugin_pdk::run_json_tool(&tool_name, &input_json, |_ctx, input: serde_json::Value| {
+            yoi_plugin_pdk::ToolOutput::json("probe ok", input)
+        })
+    }
+}
+
+#[test]
+fn wit_bindgen_generates_current_tool_world() {
+    let output = <Probe as Guest>::call("probe".to_string(), r#"{"ok":true}"#.to_string());
+    let value: serde_json::Value = serde_json::from_str(&output).unwrap();
+    assert_eq!(value["summary"], "probe ok");
+}