Refactor integration tests (#727)

* Refactor integration tests

This commit refactors the integration tests to use the `javy-runner`
crate.

The main motivation for this change is to reduce duplication and make it
easier to test more complex scenarios in the future e.g., the upcoming
changes in #702

* Style changes

* More style changes

crates/cli/tests/dylib_test.rs

@@ -1,169 +1,63 @@
 use anyhow::Result;
-use std::boxed::Box;
+use javy_runner::{Runner, RunnerError};
+use std::path::{Path, PathBuf};
 use std::str;
-use wasi_common::{pipe::WritePipe, sync::WasiCtxBuilder, WasiCtx, WasiFile};
-use wasmtime::{AsContextMut, Engine, Instance, Linker, Store};
 
-mod common;
+static ROOT: &str = env!("CARGO_MANIFEST_DIR");
 
 #[test]
 fn test_dylib() -> Result<()> {
     let js_src = "console.log(42);";
-    let stderr = WritePipe::new_in_memory();
-    run_js_src(js_src, &stderr)?;
+    let mut runner = Runner::with_dylib(provider_module()?)?;
 
-    let output = stderr.try_into_inner().unwrap().into_inner();
-    assert_eq!("42\n", str::from_utf8(&output)?);
+    let (_, logs, _) = runner.exec_through_dylib(js_src, None)?;
+    assert_eq!("42\n", str::from_utf8(&logs)?);
 
     Ok(())
 }
 
 #[test]
 fn test_dylib_with_error() -> Result<()> {
     let js_src = "function foo() { throw new Error('foo error'); } foo();";
-    let stderr = WritePipe::new_in_memory();
-    let result = run_js_src(js_src, &stderr);
 
-    assert!(result.is_err());
-    let output = stderr.try_into_inner().unwrap().into_inner();
+    let mut runner = Runner::with_dylib(provider_module()?)?;
 
+    let res = runner.exec_through_dylib(js_src, None);
+
+    assert!(res.is_err());
+
+    let e = res.err().unwrap();
     let expected_log_output = "Error:1:24 foo error\n    at foo (function.mjs:1:24)\n    at <anonymous> (function.mjs:1:50)\n\n";
-    assert_eq!(expected_log_output, str::from_utf8(&output)?);
+    assert_eq!(
+        expected_log_output,
+        String::from_utf8(e.downcast_ref::<RunnerError>().unwrap().stderr.clone())?
+    );
 
     Ok(())
 }
 
 #[test]
 fn test_dylib_with_exported_func() -> Result<()> {
     let js_src = "export function foo() { console.log('In foo'); }; console.log('Toplevel');";
-    let stderr = WritePipe::new_in_memory();
-    run_invoke(js_src, "foo", &stderr)?;
 
-    let output = stderr.try_into_inner().unwrap().into_inner();
-    assert_eq!("Toplevel\nIn foo\n", str::from_utf8(&output)?);
+    let mut runner = Runner::with_dylib(provider_module()?)?;
 
-    Ok(())
-}
+    let (_, logs, _) = runner.exec_through_dylib(js_src, Some("foo"))?;
+    assert_eq!("Toplevel\nIn foo\n", str::from_utf8(&logs)?);
 
-fn run_js_src<T: WasiFile + Clone + 'static>(js_src: &str, stderr: &T) -> Result<()> {
-    let (instance, mut store) = create_wasm_env(stderr)?;
-
-    let eval_bytecode_func =
-        instance.get_typed_func::<(u32, u32), ()>(store.as_context_mut(), "eval_bytecode")?;
-    let (bytecode_ptr, bytecode_len) =
-        compile_src(js_src.as_bytes(), &instance, store.as_context_mut())?;
-    eval_bytecode_func.call(store.as_context_mut(), (bytecode_ptr, bytecode_len))?;
     Ok(())
 }
 
-fn run_invoke<T: WasiFile + Clone + 'static>(
-    js_src: &str,
-    fn_to_invoke: &str,
-    stderr: &T,
-) -> Result<()> {
-    let (instance, mut store) = create_wasm_env(stderr)?;
-
-    let invoke_func =
-        instance.get_typed_func::<(u32, u32, u32, u32), ()>(store.as_context_mut(), "invoke")?;
-    let (bytecode_ptr, bytecode_len) =
-        compile_src(js_src.as_bytes(), &instance, store.as_context_mut())?;
-    let (fn_name_ptr, fn_name_len) =
-        copy_func_name(fn_to_invoke, &instance, store.as_context_mut())?;
-    invoke_func.call(
-        store.as_context_mut(),
-        (bytecode_ptr, bytecode_len, fn_name_ptr, fn_name_len),
-    )?;
-    Ok(())
-}
-
-fn create_wasm_env<T: WasiFile + Clone + 'static>(
-    stderr: &T,
-) -> Result<(Instance, Store<WasiCtx>)> {
-    let engine = Engine::default();
-    let mut linker = Linker::new(&engine);
-    wasi_common::sync::add_to_linker(&mut linker, |s| s)?;
-    let wasi = WasiCtxBuilder::new()
-        .stderr(Box::new(stderr.clone()))
-        .build();
-    let module = common::create_quickjs_provider_module(&engine)?;
-
-    let mut store = Store::new(&engine, wasi);
-    let instance = linker.instantiate(store.as_context_mut(), &module)?;
-
-    Ok((instance, store))
-}
-
-fn compile_src(
-    js_src: &[u8],
-    instance: &Instance,
-    mut store: impl AsContextMut,
-) -> Result<(u32, u32)> {
-    let memory = instance
-        .get_memory(store.as_context_mut(), "memory")
-        .unwrap();
-    let compile_src_func =
-        instance.get_typed_func::<(u32, u32), u32>(store.as_context_mut(), "compile_src")?;
-
-    let js_src_ptr = allocate_memory(
-        instance,
-        store.as_context_mut(),
-        1,
-        js_src.len().try_into()?,
-    )?;
-    memory.write(store.as_context_mut(), js_src_ptr.try_into()?, js_src)?;
-
-    let ret_ptr = compile_src_func.call(
-        store.as_context_mut(),
-        (js_src_ptr, js_src.len().try_into()?),
-    )?;
-    let mut ret_buffer = [0; 8];
-    memory.read(store.as_context(), ret_ptr.try_into()?, &mut ret_buffer)?;
-    let bytecode_ptr = u32::from_le_bytes(ret_buffer[0..4].try_into()?);
-    let bytecode_len = u32::from_le_bytes(ret_buffer[4..8].try_into()?);
-
-    Ok((bytecode_ptr, bytecode_len))
-}
-
-fn copy_func_name(
-    fn_name: &str,
-    instance: &Instance,
-    mut store: impl AsContextMut,
-) -> Result<(u32, u32)> {
-    let memory = instance
-        .get_memory(store.as_context_mut(), "memory")
-        .unwrap();
-    let fn_name_bytes = fn_name.as_bytes();
-    let fn_name_ptr = allocate_memory(
-        instance,
-        store.as_context_mut(),
-        1,
-        fn_name_bytes.len().try_into()?,
-    )?;
-    memory.write(
-        store.as_context_mut(),
-        fn_name_ptr.try_into()?,
-        fn_name_bytes,
-    )?;
-
-    Ok((fn_name_ptr, fn_name_bytes.len().try_into()?))
-}
+fn provider_module() -> Result<Vec<u8>> {
+    let mut lib_path = PathBuf::from(ROOT);
+    lib_path.pop();
+    lib_path.pop();
+    lib_path = lib_path.join(
+        Path::new("target")
+            .join("wasm32-wasi")
+            .join("release")
+            .join("javy_quickjs_provider_wizened.wasm"),
+    );
 
-fn allocate_memory(
-    instance: &Instance,
-    mut store: impl AsContextMut,
-    alignment: u32,
-    new_size: u32,
-) -> Result<u32> {
-    let realloc_func = instance.get_typed_func::<(u32, u32, u32, u32), u32>(
-        store.as_context_mut(),
-        "canonical_abi_realloc",
-    )?;
-    let orig_ptr = 0;
-    let orig_size = 0;
-    realloc_func
-        .call(
-            store.as_context_mut(),
-            (orig_ptr, orig_size, alignment, new_size),
-        )
-        .map_err(Into::into)
+    std::fs::read(lib_path).map_err(Into::into)
 }

crates/cli/tests/dynamic-linking-scripts/console.js

@@ -0,0 +1 @@
+console.log(42);

crates/cli/tests/dynamic-linking-scripts/errors-in-exported-functions.js

@@ -0,0 +1,3 @@
+export function foo() { 
+  throw "Error";
+}

crates/cli/tests/dynamic-linking-scripts/errors-in-exported-functions.wit

@@ -0,0 +1,5 @@
+package local:main
+
+world foo-test {
+  export foo: func()
+}

crates/cli/tests/dynamic-linking-scripts/javy-json-id.js

@@ -0,0 +1 @@
+console.log(Javy.JSON.toStdout(Javy.JSON.fromStdin()));

crates/cli/tests/dynamic-linking-scripts/linking-arrow-func.js

@@ -0,0 +1 @@
+export default () => console.log(42)

crates/cli/tests/dynamic-linking-scripts/linking-arrow-func.wit

@@ -0,0 +1,5 @@
+package local:test
+
+world exported-arrow {
+  export default: func()
+}

crates/cli/tests/dynamic-linking-scripts/linking-with-func-without-flag.js

@@ -0,0 +1,5 @@
+export function foo() {
+  console.log('In foo');
+};
+
+console.log('Toplevel');

crates/cli/tests/dynamic-linking-scripts/linking-with-func.js

@@ -0,0 +1,5 @@
+export function fooBar() {
+  console.log('In foo'); 
+}; 
+
+console.log('Toplevel');

crates/cli/tests/dynamic-linking-scripts/linking-with-func.wit

@@ -0,0 +1,5 @@
+package local:main
+
+world foo-test {
+  export foo-bar: func()
+}