ed8908efcf
This addresses #4307. For the static API we generate 100 arbitrary test cases at build time, each of which includes 0-5 parameter types, a result type, and a WAT fragment containing an imported function and an exported function. The exported function calls the imported function, which is implemented by the host. At runtime, the fuzz test selects a test case at random and feeds it zero or more sets of arbitrary parameters and results, checking that values which flow host-to-guest and guest-to-host make the transition unchanged. The fuzz test for the dynamic API follows a similar pattern, the only difference being that test cases are generated at runtime. Signed-off-by: Joel Dice <joel.dice@fermyon.com>
501 lines
16 KiB
Rust
501 lines
16 KiB
Rust
use super::{make_echo_component, make_echo_component_with_params, Param, Type};
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use anyhow::Result;
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use component_test_util::FuncExt;
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use wasmtime::component::{self, Component, Linker, Val};
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use wasmtime::Store;
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#[test]
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fn primitives() -> Result<()> {
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let engine = super::engine();
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let mut store = Store::new(&engine, ());
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for (input, ty, param) in [
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(Val::Bool(true), "bool", Param(Type::U8, Some(0))),
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(Val::S8(-42), "s8", Param(Type::S8, Some(0))),
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(Val::U8(42), "u8", Param(Type::U8, Some(0))),
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(Val::S16(-4242), "s16", Param(Type::S16, Some(0))),
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(Val::U16(4242), "u16", Param(Type::U16, Some(0))),
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(Val::S32(-314159265), "s32", Param(Type::I32, Some(0))),
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(Val::U32(314159265), "u32", Param(Type::I32, Some(0))),
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(Val::S64(-31415926535897), "s64", Param(Type::I64, Some(0))),
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(Val::U64(31415926535897), "u64", Param(Type::I64, Some(0))),
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(
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Val::Float32(3.14159265_f32.to_bits()),
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"float32",
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Param(Type::F32, Some(0)),
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),
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(
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Val::Float64(3.14159265_f64.to_bits()),
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"float64",
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Param(Type::F64, Some(0)),
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),
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(Val::Char('🦀'), "char", Param(Type::I32, Some(0))),
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] {
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let component = Component::new(&engine, make_echo_component_with_params(ty, &[param]))?;
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let instance = Linker::new(&engine).instantiate(&mut store, &component)?;
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let func = instance.get_func(&mut store, "echo").unwrap();
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let output = func.call_and_post_return(&mut store, &[input.clone()])?;
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assert_eq!(input, output);
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}
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// Sad path: type mismatch
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let component = Component::new(
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&engine,
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make_echo_component_with_params("float64", &[Param(Type::F64, Some(0))]),
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)?;
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let instance = Linker::new(&engine).instantiate(&mut store, &component)?;
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let func = instance.get_func(&mut store, "echo").unwrap();
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let err = func
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.call_and_post_return(&mut store, &[Val::U64(42)])
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.unwrap_err();
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assert!(err.to_string().contains("type mismatch"), "{err}");
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// Sad path: arity mismatch (too many)
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let err = func
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.call_and_post_return(
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&mut store,
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&[
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Val::Float64(3.14159265_f64.to_bits()),
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Val::Float64(3.14159265_f64.to_bits()),
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],
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)
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.unwrap_err();
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assert!(
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err.to_string().contains("expected 1 argument(s), got 2"),
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"{err}"
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);
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// Sad path: arity mismatch (too few)
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let err = func.call_and_post_return(&mut store, &[]).unwrap_err();
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assert!(
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err.to_string().contains("expected 1 argument(s), got 0"),
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"{err}"
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);
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Ok(())
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}
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#[test]
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fn strings() -> Result<()> {
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let engine = super::engine();
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let mut store = Store::new(&engine, ());
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let component = Component::new(&engine, make_echo_component("string", 8))?;
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let instance = Linker::new(&engine).instantiate(&mut store, &component)?;
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let func = instance.get_func(&mut store, "echo").unwrap();
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let input = Val::String(Box::from("hello, component!"));
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let output = func.call_and_post_return(&mut store, &[input.clone()])?;
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assert_eq!(input, output);
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Ok(())
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}
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#[test]
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fn lists() -> Result<()> {
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let engine = super::engine();
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let mut store = Store::new(&engine, ());
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let component = Component::new(&engine, make_echo_component("(list u32)", 8))?;
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let instance = Linker::new(&engine).instantiate(&mut store, &component)?;
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let func = instance.get_func(&mut store, "echo").unwrap();
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let ty = &func.params(&store)[0];
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let input = ty.unwrap_list().new_val(Box::new([
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Val::U32(32343),
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Val::U32(79023439),
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Val::U32(2084037802),
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]))?;
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let output = func.call_and_post_return(&mut store, &[input.clone()])?;
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assert_eq!(input, output);
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// Sad path: type mismatch
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let err = ty
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.unwrap_list()
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.new_val(Box::new([
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Val::U32(32343),
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Val::U32(79023439),
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Val::Float32(3.14159265_f32.to_bits()),
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]))
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.unwrap_err();
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assert!(err.to_string().contains("type mismatch"), "{err}");
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Ok(())
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}
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#[test]
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fn records() -> Result<()> {
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let engine = super::engine();
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let mut store = Store::new(&engine, ());
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let component = Component::new(
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&engine,
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make_echo_component_with_params(
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r#"(record (field "A" u32) (field "B" float64) (field "C" (record (field "D" bool) (field "E" u32))))"#,
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&[
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Param(Type::I32, Some(0)),
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Param(Type::F64, Some(8)),
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Param(Type::U8, Some(16)),
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Param(Type::I32, Some(20)),
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],
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),
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)?;
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let instance = Linker::new(&engine).instantiate(&mut store, &component)?;
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let func = instance.get_func(&mut store, "echo").unwrap();
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let ty = &func.params(&store)[0];
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let inner_type = &ty.unwrap_record().fields().nth(2).unwrap().ty;
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let input = ty.unwrap_record().new_val([
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("A", Val::U32(32343)),
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("B", Val::Float64(3.14159265_f64.to_bits())),
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(
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"C",
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inner_type
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.unwrap_record()
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.new_val([("D", Val::Bool(false)), ("E", Val::U32(2084037802))])?,
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),
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])?;
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let output = func.call_and_post_return(&mut store, &[input.clone()])?;
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assert_eq!(input, output);
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// Sad path: type mismatch
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let err = ty
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.unwrap_record()
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.new_val([
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("A", Val::S32(32343)),
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("B", Val::Float64(3.14159265_f64.to_bits())),
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(
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"C",
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inner_type
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.unwrap_record()
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.new_val([("D", Val::Bool(false)), ("E", Val::U32(2084037802))])?,
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),
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])
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.unwrap_err();
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assert!(err.to_string().contains("type mismatch"), "{err}");
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// Sad path: too many fields
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let err = ty
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.unwrap_record()
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.new_val([
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("A", Val::U32(32343)),
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("B", Val::Float64(3.14159265_f64.to_bits())),
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(
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"C",
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inner_type
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.unwrap_record()
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.new_val([("D", Val::Bool(false)), ("E", Val::U32(2084037802))])?,
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),
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("F", Val::Unit),
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])
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.unwrap_err();
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assert!(
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err.to_string().contains("expected 3 value(s); got 4"),
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"{err}"
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);
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// Sad path: too few fields
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let err = ty
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.unwrap_record()
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.new_val([
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("A", Val::U32(32343)),
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("B", Val::Float64(3.14159265_f64.to_bits())),
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])
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.unwrap_err();
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assert!(
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err.to_string().contains("expected 3 value(s); got 2"),
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"{err}"
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);
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Ok(())
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}
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#[test]
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fn variants() -> Result<()> {
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let engine = super::engine();
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let mut store = Store::new(&engine, ());
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let component = Component::new(
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&engine,
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make_echo_component_with_params(
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r#"(variant (case "A" u32) (case "B" float64) (case "C" (record (field "D" bool) (field "E" u32))))"#,
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&[
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Param(Type::U8, Some(0)),
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Param(Type::I64, Some(8)),
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Param(Type::I32, None),
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],
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),
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)?;
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let instance = Linker::new(&engine).instantiate(&mut store, &component)?;
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let func = instance.get_func(&mut store, "echo").unwrap();
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let ty = &func.params(&store)[0];
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let input = ty
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.unwrap_variant()
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.new_val("B", Val::Float64(3.14159265_f64.to_bits()))?;
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let output = func.call_and_post_return(&mut store, &[input.clone()])?;
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assert_eq!(input, output);
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// Do it again, this time using case "C"
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let component = Component::new(
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&engine,
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dbg!(make_echo_component_with_params(
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r#"(variant (case "A" u32) (case "B" float64) (case "C" (record (field "D" bool) (field "E" u32))))"#,
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&[
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Param(Type::U8, Some(0)),
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Param(Type::I64, Some(8)),
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Param(Type::I32, Some(12)),
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],
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)),
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)?;
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let instance = Linker::new(&engine).instantiate(&mut store, &component)?;
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let func = instance.get_func(&mut store, "echo").unwrap();
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let ty = &func.params(&store)[0];
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let c_type = &ty.unwrap_variant().cases().nth(2).unwrap().ty;
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let input = ty.unwrap_variant().new_val(
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"C",
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c_type
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.unwrap_record()
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.new_val([("D", Val::Bool(true)), ("E", Val::U32(314159265))])?,
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)?;
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let output = func.call_and_post_return(&mut store, &[input.clone()])?;
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assert_eq!(input, output);
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// Sad path: type mismatch
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let err = ty
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.unwrap_variant()
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.new_val("B", Val::U64(314159265))
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.unwrap_err();
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assert!(err.to_string().contains("type mismatch"), "{err}");
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// Sad path: unknown case
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let err = ty
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.unwrap_variant()
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.new_val("D", Val::U64(314159265))
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.unwrap_err();
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assert!(err.to_string().contains("unknown variant case"), "{err}");
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// Make sure we lift variants which have cases of different sizes with the correct alignment
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let component = Component::new(
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&engine,
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make_echo_component_with_params(
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r#"
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(record
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(field "A" (variant
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(case "A" u32)
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(case "B" float64)
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(case "C" (record (field "D" bool) (field "E" u32)))))
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(field "B" u32))"#,
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&[
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Param(Type::U8, Some(0)),
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Param(Type::I64, Some(8)),
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Param(Type::I32, None),
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Param(Type::I32, Some(16)),
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],
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),
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)?;
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let instance = Linker::new(&engine).instantiate(&mut store, &component)?;
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let func = instance.get_func(&mut store, "echo").unwrap();
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let ty = &func.params(&store)[0];
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let a_type = &ty.unwrap_record().fields().nth(0).unwrap().ty;
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let input = ty.unwrap_record().new_val([
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(
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"A",
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a_type.unwrap_variant().new_val("A", Val::U32(314159265))?,
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),
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("B", Val::U32(628318530)),
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])?;
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let output = func.call_and_post_return(&mut store, &[input.clone()])?;
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assert_eq!(input, output);
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Ok(())
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}
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#[test]
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fn flags() -> Result<()> {
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let engine = super::engine();
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let mut store = Store::new(&engine, ());
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let component = Component::new(
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&engine,
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make_echo_component_with_params(
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r#"(flags "A" "B" "C" "D" "E")"#,
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&[Param(Type::U8, Some(0))],
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),
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)?;
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let instance = Linker::new(&engine).instantiate(&mut store, &component)?;
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let func = instance.get_func(&mut store, "echo").unwrap();
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let ty = &func.params(&store)[0];
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let input = ty.unwrap_flags().new_val(&["B", "D"])?;
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let output = func.call_and_post_return(&mut store, &[input.clone()])?;
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assert_eq!(input, output);
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// Sad path: unknown flags
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let err = ty.unwrap_flags().new_val(&["B", "D", "F"]).unwrap_err();
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assert!(err.to_string().contains("unknown flag"), "{err}");
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Ok(())
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}
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#[test]
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fn everything() -> Result<()> {
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// This serves to test both nested types and storing parameters on the heap (i.e. exceeding `MAX_STACK_PARAMS`)
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let engine = super::engine();
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let mut store = Store::new(&engine, ());
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let component = Component::new(
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&engine,
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make_echo_component_with_params(
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r#"
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(record
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(field "A" u32)
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(field "B" (enum "1" "2"))
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(field "C" (record (field "D" bool) (field "E" u32)))
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(field "F" (list (flags "G" "H" "I")))
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(field "J" (variant
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(case "K" u32)
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(case "L" float64)
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(case "M" (record (field "N" bool) (field "O" u32)))))
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(field "P" s8)
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(field "Q" s16)
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(field "R" s32)
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(field "S" s64)
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(field "T" float32)
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(field "U" float64)
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(field "V" string)
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(field "W" char)
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(field "X" unit)
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(field "Y" (tuple u32 u32))
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(field "Z" (union u32 float64))
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(field "AA" (option u32))
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(field "BB" (expected string string))
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)"#,
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&[
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Param(Type::I32, Some(0)),
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Param(Type::U8, Some(4)),
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Param(Type::U8, Some(5)),
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Param(Type::I32, Some(8)),
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Param(Type::I32, Some(12)),
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Param(Type::I32, Some(16)),
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Param(Type::U8, Some(20)),
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Param(Type::I64, Some(28)),
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Param(Type::I32, Some(32)),
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Param(Type::S8, Some(36)),
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Param(Type::S16, Some(38)),
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Param(Type::I32, Some(40)),
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Param(Type::I64, Some(48)),
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Param(Type::F32, Some(56)),
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Param(Type::F64, Some(64)),
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Param(Type::I32, Some(72)),
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Param(Type::I32, Some(76)),
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Param(Type::I32, Some(80)),
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Param(Type::I32, Some(84)),
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Param(Type::I32, Some(88)),
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Param(Type::I64, Some(96)),
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Param(Type::U8, Some(104)),
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Param(Type::I32, Some(108)),
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Param(Type::U8, Some(112)),
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Param(Type::I32, Some(116)),
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Param(Type::I32, Some(120)),
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],
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),
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)?;
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let instance = Linker::new(&engine).instantiate(&mut store, &component)?;
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let func = instance.get_func(&mut store, "echo").unwrap();
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let ty = &func.params(&store)[0];
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let types = ty
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.unwrap_record()
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.fields()
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.map(|field| field.ty)
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.collect::<Box<[component::Type]>>();
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let (b_type, c_type, f_type, j_type, y_type, z_type, aa_type, bb_type) = (
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&types[1], &types[2], &types[3], &types[4], &types[14], &types[15], &types[16], &types[17],
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);
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let f_element_type = &f_type.unwrap_list().ty();
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let input = ty.unwrap_record().new_val([
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("A", Val::U32(32343)),
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("B", b_type.unwrap_enum().new_val("2")?),
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(
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"C",
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c_type
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.unwrap_record()
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.new_val([("D", Val::Bool(false)), ("E", Val::U32(2084037802))])?,
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),
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(
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"F",
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f_type.unwrap_list().new_val(Box::new([f_element_type
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.unwrap_flags()
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.new_val(&["G", "I"])?]))?,
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),
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(
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"J",
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j_type
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.unwrap_variant()
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.new_val("L", Val::Float64(3.14159265_f64.to_bits()))?,
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),
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("P", Val::S8(42)),
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("Q", Val::S16(4242)),
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("R", Val::S32(42424242)),
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("S", Val::S64(424242424242424242)),
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("T", Val::Float32(3.14159265_f32.to_bits())),
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("U", Val::Float64(3.14159265_f64.to_bits())),
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("V", Val::String(Box::from("wow, nice types"))),
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("W", Val::Char('🦀')),
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("X", Val::Unit),
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(
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"Y",
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y_type
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.unwrap_tuple()
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.new_val(Box::new([Val::U32(42), Val::U32(24)]))?,
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),
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(
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"Z",
|
|
z_type
|
|
.unwrap_union()
|
|
.new_val(1, Val::Float64(3.14159265_f64.to_bits()))?,
|
|
),
|
|
(
|
|
"AA",
|
|
aa_type.unwrap_option().new_val(Some(Val::U32(314159265)))?,
|
|
),
|
|
(
|
|
"BB",
|
|
bb_type
|
|
.unwrap_expected()
|
|
.new_val(Ok(Val::String(Box::from("no problem"))))?,
|
|
),
|
|
])?;
|
|
let output = func.call_and_post_return(&mut store, &[input.clone()])?;
|
|
|
|
assert_eq!(input, output);
|
|
|
|
Ok(())
|
|
}
|