Add e2e tests for calling exported functions with lots of params and …

…results (#958)

add e2e tests with lots of params and results

crates/wasmi/src/engine/tests/many_inout.rs

@@ -0,0 +1,45 @@
+use crate::{Engine, Func, Linker, Module, Store, Value};
+use std::vec::Vec;
+
+/// Converts the given `.wat` into `.wasm`.
+fn wat2wasm(wat: &str) -> Vec<u8> {
+    wat::parse_str(wat).unwrap()
+}
+
+/// Common routine to setup the tests.
+fn setup_test(wat: &str) -> (Store<()>, Func) {
+    let wasm = wat2wasm(wat);
+    let engine = Engine::default();
+    let mut store = <Store<()>>::new(&engine, ());
+    let linker = <Linker<()>>::new(&engine);
+    let module = Module::new(&engine, &wasm[..]).unwrap();
+    let instance = linker
+        .instantiate(&mut store, &module)
+        .unwrap()
+        .ensure_no_start(&mut store)
+        .unwrap();
+    let func = instance.get_func(&store, "test").unwrap();
+    (store, func)
+}
+
+#[test]
+fn many_params() {
+    let wat = include_str!("wat/many_params.wat");
+    let (mut store, func) = setup_test(wat);
+    func.call(&mut store, &[0; 150].map(Value::I32), &mut [])
+        .unwrap();
+}
+
+#[test]
+fn many_results() {
+    let wat = include_str!("wat/many_results.wat");
+    let (mut store, func) = setup_test(wat);
+    let mut results = [0; 150].map(Value::I32);
+    func.call(&mut store, &[], &mut results).unwrap();
+    for (i, result) in results.iter().enumerate() {
+        let &Value::I32(result) = result else {
+            panic!("unexpected result type at index {i}: {result:?}");
+        };
+        assert!(result as usize == i % 10);
+    }
+}

crates/wasmi/src/engine/tests/mod.rs

@@ -1 +1,2 @@
 mod host_calls;
+mod many_inout;

crates/wasmi/src/engine/tests/wat/many_params.wat

@@ -0,0 +1,23 @@
+(module
+    (func (export "test")
+        (param
+            ;; Define 150 i32 params
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+        )
+        ;; do nothing
+    )    
+)

crates/wasmi/src/engine/tests/wat/many_results.wat

@@ -0,0 +1,31 @@
+(module
+    (func (export "test")
+        (result
+            ;; Define 150 i32 results
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+            i32 i32 i32 i32 i32 i32 i32 i32 i32 i32
+        )
+        (call $return10) (call $return10) (call $return10) (call $return10) (call $return10)
+        (call $return10) (call $return10) (call $return10) (call $return10) (call $return10)
+        (call $return10) (call $return10) (call $return10) (call $return10) (call $return10)
+    )
+
+    (func $return10
+        (result i32 i32 i32 i32 i32 i32 i32 i32 i32 i32)
+        (i32.const 0) (i32.const 1) (i32.const 2) (i32.const 3) (i32.const 4)
+        (i32.const 5) (i32.const 6) (i32.const 7) (i32.const 8) (i32.const 9)
+    )
+)