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Convert the wast test harness into a crate.

Browse Source 
This uses a build.rs file to collect all the wast tests and create
individual `#[test]` lines for them, so that `cargo test` can run them
in parallel.
This commit is contained in:
Dan Gohman
2018-12-03 04:19:20 -08:00
parent 4c47ce9b53
commit 83f8a31010
13 changed files with 592 additions and 291 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
Cargo.toml
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@@ -25,6 +25,7 @@ cranelift-wasm = { git = "https://github.com/sunfishcode/cranelift.git", branch
wasmtime-environ = { path = "lib/environ" }
wasmtime-execute = { path = "lib/execute" }
wasmtime-obj = { path = "lib/obj" }
wasmtime-wast = { path = "lib/wast" }
docopt = "1.0.1"
serde = "1.0.75"
serde_derive = "1.0.75"

2
lib/execute/src/lib.rs
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@@ -55,6 +55,7 @@ mod signalhandlers;
mod table;
mod traphandlers;
mod vmcontext;
mod world;
pub use code::Code;
pub use execute::{compile_and_link_module, finish_instantiation};
@@ -62,6 +63,7 @@ pub use instance::Instance;
pub use invoke::{invoke, InvokeOutcome, Value};
pub use traphandlers::{call_wasm, LookupCodeSegment, RecordTrap, Unwind};
pub use vmcontext::VMContext;
pub use world::InstanceWorld;
#[cfg(not(feature = "std"))]
mod std {

66
lib/execute/src/world.rs Normal file
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@@ -0,0 +1,66 @@
use cranelift_codegen::isa;
use std::str;
use wasmtime_environ::{Compilation, Module, ModuleEnvironment, Tunables};
use {compile_and_link_module, finish_instantiation, invoke, Code, Instance, InvokeOutcome, Value};
/// A module, an instance of that module, and accompanying compilation artifacts.
///
/// TODO: Rename and reorganize this.
pub struct InstanceWorld {
module: Module,
instance: Instance,
compilation: Compilation,
}
impl InstanceWorld {
/// Create a new `InstanceWorld` by compiling the wasm module in `data` and instatiating it.
pub fn new(code: &mut Code, isa: &isa::TargetIsa, data: &[u8]) -> Result<Self, String> {
let mut module = Module::new();
let tunables = Tunables::default();
let (instance, compilation) = {
let translation = {
let environ = ModuleEnvironment::new(isa, &mut module, tunables);
environ.translate(&data).map_err(|e| e.to_string())?
};
let imports_resolver = |_env: &str, _function: &str| None;
let compilation = compile_and_link_module(isa, &translation, &imports_resolver)?;
let mut instance = Instance::new(
translation.module,
&compilation,
&translation.lazy.data_initializers,
)?;
finish_instantiation(code, isa, &translation.module, &compilation, &mut instance)?;
(instance, compilation)
};
Ok(Self {
module,
instance,
compilation,
})
}
/// Invoke a function in this `InstanceWorld` by name.
pub fn invoke(
&mut self,
code: &mut Code,
isa: &isa::TargetIsa,
function_name: &str,
args: &[Value],
) -> Result<InvokeOutcome, String> {
invoke(
code,
isa,
&self.module,
&self.compilation,
self.instance.vmctx(),
&function_name,
args,
).map_err(|e| e.to_string())
}
}

20
lib/wast/Cargo.toml Normal file
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@@ -0,0 +1,20 @@
[package]
name = "wasmtime-wast"
version = "0.0.0"
authors = ["The Cranelift Project Developers"]
publish = false
description = "wast testing support for wasmtime"
categories = ["wasm"]
repository = "https://github.com/CraneStation/wasmtime"
license = "Apache-2.0 WITH LLVM-exception"
readme = "README.md"
[dependencies]
cranelift-codegen = { git = "https://github.com/sunfishcode/cranelift.git", branch = "guard-offset" }
cranelift-native = { git = "https://github.com/sunfishcode/cranelift.git", branch = "guard-offset" }
wasmtime-execute = { path = "../execute" }
wabt = "0.7"
[badges]
maintenance = { status = "experimental" }
travis-ci = { repository = "CraneStation/wasmtime" }

220
lib/wast/LICENSE Normal file
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@@ -0,0 +1,220 @@
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4
lib/wast/README.md Normal file
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@@ -0,0 +1,4 @@
This is the `wasmtime-wast` crate, which contains support for running
"wast" tests, such as the spec testsuite.
[`wasmtime-wast`]: https://crates.io/crates/wasmtime-wast

46
lib/wast/build.rs Normal file
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@@ -0,0 +1,46 @@
use std::env;
use std::fs::{read_dir, File};
use std::io::Write;
use std::path::PathBuf;
fn main() {
let out_dir =
PathBuf::from(env::var("OUT_DIR").expect("The OUT_DIR environment variable must be set"));
let mut out =
File::create(out_dir.join("run_wast_files.rs")).expect("error creating run_wast_files.rs");
let mut paths: Vec<_> = read_dir("spec_testsuite")
.unwrap()
.map(|r| r.unwrap())
.filter(|p| {
// Ignore files starting with `.`, which could be editor temporary files
if let Some(stem) = p.path().file_stem() {
if let Some(stemstr) = stem.to_str() {
return !stemstr.starts_with('.');
}
}
false
}).collect();
paths.sort_by_key(|dir| dir.path());
for path in paths {
let path = path.path();
writeln!(out, "#[test]");
writeln!(
out,
"fn {}() {{",
path.file_stem()
.expect("file_stem")
.to_str()
.expect("to_str")
);
writeln!(
out,
" wast_file(Path::new(\"{}\"), &*native_isa()).expect(\"error loading wast file {}\");",
path.display(),
path.display()
);
writeln!(out, "}}");
writeln!(out);
}
}

0
tests/wast/misc_traps.wast → lib/wast/misc_testsuite/misc_traps.wast
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0
tests/wast/stack_overflow.wast → lib/wast/misc_testsuite/stack_overflow.wast
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34
lib/wast/src/lib.rs Normal file
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@@ -0,0 +1,34 @@
//! JIT-style runtime for WebAssembly using Cranelift.
#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates)]
#![warn(unused_import_braces)]
#![deny(unstable_features)]
#![cfg_attr(
feature = "clippy",
plugin(clippy(conf_file = "../../clippy.toml"))
)]
#![cfg_attr(
feature = "cargo-clippy",
allow(new_without_default, new_without_default_derive)
)]
#![cfg_attr(
feature = "cargo-clippy",
warn(
float_arithmetic,
mut_mut,
nonminimal_bool,
option_map_unwrap_or,
option_map_unwrap_or_else,
print_stdout,
unicode_not_nfc,
use_self
)
)]
extern crate cranelift_codegen;
extern crate wabt;
extern crate wasmtime_execute;
mod wast;
pub use wast::{wast_buffer, wast_file};

177
lib/wast/src/wast.rs Normal file
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@@ -0,0 +1,177 @@
use cranelift_codegen::isa;
use std::collections::HashMap;
use std::fs;
use std::io;
use std::io::Read;
use std::path::Path;
use std::str;
use wabt::script::{self, Action, Command, CommandKind, ModuleBinary, ScriptParser};
use wasmtime_execute::{Code, InstanceWorld, InvokeOutcome, Value};
struct Instances {
current: Option<InstanceWorld>,
namespace: HashMap<String, InstanceWorld>,
code: Code,
}
impl Instances {
pub fn new() -> Self {
Self {
current: None,
namespace: HashMap::new(),
code: Code::new(),
}
}
fn instantiate(&mut self, isa: &isa::TargetIsa, module: ModuleBinary) -> InstanceWorld {
InstanceWorld::new(&mut self.code, isa, &module.into_vec()).unwrap()
}
pub fn define_unnamed_module(&mut self, isa: &isa::TargetIsa, module: ModuleBinary) {
self.current = Some(self.instantiate(isa, module));
}
pub fn define_named_module(
&mut self,
isa: &isa::TargetIsa,
name: String,
module: ModuleBinary,
) {
let world = self.instantiate(isa, module);
self.namespace.insert(name, world);
}
pub fn perform_action(&mut self, isa: &isa::TargetIsa, action: Action) -> InvokeOutcome {
match action {
Action::Invoke {
module,
field,
args,
} => {
let mut value_args = Vec::with_capacity(args.len());
for a in args {
value_args.push(match a {
script::Value::I32(i) => Value::I32(i),
script::Value::I64(i) => Value::I64(i),
script::Value::F32(i) => Value::F32(i.to_bits()),
script::Value::F64(i) => Value::F64(i.to_bits()),
});
}
match module {
None => match self.current {
None => panic!("invoke performed with no module present"),
Some(ref mut instance_world) => instance_world
.invoke(&mut self.code, isa, &field, &value_args)
.expect(&format!("error invoking {} in current module", field)),
},
Some(name) => self
.namespace
.get_mut(&name)
.expect(&format!("module {} not declared", name))
.invoke(&mut self.code, isa, &field, &value_args)
.expect(&format!("error invoking {} in module {}", field, name)),
}
}
_ => panic!("unsupported action {:?}", action),
}
}
}
/// Run a wast script from a byte buffer.
pub fn wast_buffer(name: &str, isa: &isa::TargetIsa, wast: &[u8]) {
let mut parser = ScriptParser::from_str(str::from_utf8(wast).unwrap()).unwrap();
let mut instances = Instances::new();
while let Some(Command { kind, line }) = parser.next().unwrap() {
match kind {
CommandKind::Module { module, name } => {
if let Some(name) = name {
instances.define_named_module(&*isa, name, module.clone());
}
instances.define_unnamed_module(&*isa, module)
}
CommandKind::PerformAction(action) => match instances.perform_action(&*isa, action) {
InvokeOutcome::Returned { .. } => {}
InvokeOutcome::Trapped { message } => {
panic!("{}:{}: a trap occurred: {}", name, line, message);
}
},
CommandKind::AssertReturn { action, expected } => {
match instances.perform_action(&*isa, action) {
InvokeOutcome::Returned { values } => {
for (v, e) in values.iter().zip(expected.iter()) {
match *e {
script::Value::I32(x) => {
assert_eq!(x, v.unwrap_i32(), "at {}:{}", name, line)
}
script::Value::I64(x) => {
assert_eq!(x, v.unwrap_i64(), "at {}:{}", name, line)
}
script::Value::F32(x) => {
assert_eq!(x.to_bits(), v.unwrap_f32(), "at {}:{}", name, line)
}
script::Value::F64(x) => {
assert_eq!(x.to_bits(), v.unwrap_f64(), "at {}:{}", name, line)
}
};
}
}
InvokeOutcome::Trapped { message } => {
panic!(
"{}:{}: expected normal return, but a trap occurred: {}",
name, line, message
);
}
}
}
CommandKind::AssertTrap { action, message } => {
match instances.perform_action(&*isa, action) {
InvokeOutcome::Returned { values } => panic!(
"{}:{}: expected trap, but invoke returned with {:?}",
name, line, values
),
InvokeOutcome::Trapped {
message: trap_message,
} => {
println!(
"{}:{}: TODO: Check the trap message: expected {}, got {}",
name, line, message, trap_message
);
}
}
}
CommandKind::AssertExhaustion { action } => {
match instances.perform_action(&*isa, action) {
InvokeOutcome::Returned { values } => panic!(
"{}:{}: expected exhaustion, but invoke returned with {:?}",
name, line, values
),
InvokeOutcome::Trapped { message } => {
println!(
"{}:{}: TODO: Check the exhaustion message: {}",
name, line, message
);
}
}
}
command => {
println!("{}:{}: TODO: implement {:?}", name, line, command);
}
}
}
}
/// Run a wast script from a file.
pub fn wast_file(path: &Path, isa: &isa::TargetIsa) -> Result<(), String> {
let wast = read_to_end(path).map_err(|e| e.to_string())?;
wast_buffer(&path.display().to_string(), isa, &wast);
Ok(())
}
fn read_to_end(path: &Path) -> Result<Vec<u8>, io::Error> {
let mut buf: Vec<u8> = Vec::new();
let mut file = fs::File::open(path)?;
file.read_to_end(&mut buf)?;
Ok(buf)
}

22
lib/wast/tests/wast_files.rs Normal file
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@@ -0,0 +1,22 @@
extern crate cranelift_codegen;
extern crate cranelift_native;
extern crate wasmtime_wast;
use cranelift_codegen::isa;
use cranelift_codegen::settings;
use cranelift_codegen::settings::Configurable;
use std::path::Path;
use wasmtime_wast::wast_file;
include!(concat!(env!("OUT_DIR"), "/run_wast_files.rs"));
#[cfg(test)]
fn native_isa() -> Box<isa::TargetIsa> {
let mut flag_builder = settings::builder();
flag_builder.enable("enable_verifier").unwrap();
let isa_builder = cranelift_native::builder().unwrap_or_else(|_| {
panic!("host machine is not a supported target");
});
isa_builder.finish(settings::Flags::new(flag_builder))
}

291
tests/wast.rs
View File

@@ -1,291 +0,0 @@
extern crate cranelift_codegen;
extern crate wabt;
extern crate wasmtime_environ;
extern crate wasmtime_execute;
use cranelift_codegen::settings::Configurable;
use cranelift_codegen::{isa, settings};
use std::collections::HashMap;
use std::fs;
use std::io;
use std::io::Read;
use std::path::Path;
use std::str;
use wabt::script::{self, Action, Command, CommandKind, ScriptParser};
use wasmtime_environ::{Compilation, Module, ModuleEnvironment, Tunables};
use wasmtime_execute::{
compile_and_link_module, finish_instantiation, invoke, Code, Instance, InvokeOutcome, Value,
};
struct InstanceWorld {
module: Module,
instance: Instance,
compilation: Compilation,
}
impl InstanceWorld {
fn new(code: &mut Code, isa: &isa::TargetIsa, data: &[u8]) -> Result<Self, String> {
let mut module = Module::new();
let tunables = Tunables::default();
let (instance, compilation) = {
let translation = {
let environ = ModuleEnvironment::new(isa, &mut module, tunables);
environ.translate(&data).map_err(|e| e.to_string())?
};
let imports_resolver = |_env: &str, _function: &str| None;
let compilation = compile_and_link_module(isa, &translation, &imports_resolver)?;
let mut instance = Instance::new(
translation.module,
&compilation,
&translation.lazy.data_initializers,
)?;
finish_instantiation(code, isa, &translation.module, &compilation, &mut instance)?;
(instance, compilation)
};
Ok(Self {
module,
instance,
compilation,
})
}
fn invoke(
&mut self,
code: &mut Code,
isa: &isa::TargetIsa,
f: &str,
args: &[Value],
) -> Result<InvokeOutcome, String> {
invoke(
code,
isa,
&self.module,
&self.compilation,
self.instance.vmctx(),
&f,
args,
).map_err(|e| e.to_string())
}
}
fn translate(code: &mut Code, isa: &isa::TargetIsa, data: &[u8]) -> Result<InstanceWorld, String> {
InstanceWorld::new(code, isa, data)
}
struct Instances {
current: Option<InstanceWorld>,
namespace: HashMap<String, InstanceWorld>,
}
impl Instances {
fn new() -> Self {
Self {
current: None,
namespace: HashMap::new(),
}
}
fn unnamed(&mut self, instance: InstanceWorld) {
self.current = Some(instance);
}
fn named(&mut self, name: String, instance: InstanceWorld) {
self.namespace.insert(name, instance);
}
fn perform_action(
&mut self,
code: &mut Code,
isa: &isa::TargetIsa,
action: Action,
) -> InvokeOutcome {
match action {
Action::Invoke {
module,
field,
args,
} => {
let mut value_args = Vec::new();
for a in args {
value_args.push(match a {
script::Value::I32(i) => Value::I32(i),
script::Value::I64(i) => Value::I64(i),
script::Value::F32(i) => Value::F32(i.to_bits()),
script::Value::F64(i) => Value::F64(i.to_bits()),
});
}
match module {
None => match self.current {
None => panic!("invoke performed with no module present"),
Some(ref mut instance_world) => instance_world
.invoke(code, isa, &field, &value_args)
.expect(&format!("error invoking {} in current module", field)),
},
Some(name) => self
.namespace
.get_mut(&name)
.expect(&format!("module {} not declared", name))
.invoke(code, isa, &field, &value_args)
.expect(&format!("error invoking {} in module {}", field, name)),
}
}
_ => panic!("unsupported action {:?}", action),
}
}
}
#[test]
fn spec_core() {
let mut flag_builder = settings::builder();
flag_builder.enable("enable_verifier").unwrap();
let isa_builder = cranelift_native::builder().unwrap_or_else(|_| {
panic!("host machine is not a supported target");
});
let isa = isa_builder.finish(settings::Flags::new(flag_builder));
let mut paths: Vec<_> = fs::read_dir("tests/wast")
.unwrap()
.map(|r| r.unwrap())
.filter(|p| {
// Ignore files starting with `.`, which could be editor temporary files
if let Some(stem) = p.path().file_stem() {
if let Some(stemstr) = stem.to_str() {
return !stemstr.starts_with('.');
}
}
false
}).collect();
paths.sort_by_key(|dir| dir.path());
for path in paths {
let path = path.path();
let source = read_to_end(&path).unwrap();
test_wast(&path, &*isa, &source);
}
}
#[cfg(test)]
fn read_to_end(path: &Path) -> Result<Vec<u8>, io::Error> {
let mut buf: Vec<u8> = Vec::new();
let mut file = fs::File::open(path)?;
file.read_to_end(&mut buf)?;
Ok(buf)
}
#[cfg(test)]
fn test_wast(path: &Path, isa: &isa::TargetIsa, wast: &[u8]) {
println!("Testing {}", path.display());
let mut parser = ScriptParser::from_str(str::from_utf8(wast).unwrap()).unwrap();
let mut instances = Instances::new();
let mut code = Code::new();
while let Some(Command { kind, line }) = parser.next().unwrap() {
match kind {
CommandKind::Module { module, name } => {
if let Some(name) = name {
instances.named(
name,
translate(&mut code, &*isa, &module.clone().into_vec()).unwrap(),
);
}
instances.unnamed(translate(&mut code, &*isa, &module.clone().into_vec()).unwrap());
}
CommandKind::PerformAction(action) => {
match instances.perform_action(&mut code, &*isa, action) {
InvokeOutcome::Returned { .. } => {}
InvokeOutcome::Trapped { message } => {
panic!("{}:{}: a trap occurred: {}", path.display(), line, message);
}
}
}
CommandKind::AssertReturn { action, expected } => {
match instances.perform_action(&mut code, &*isa, action) {
InvokeOutcome::Returned { values } => {
for (v, e) in values.iter().zip(expected.iter()) {
match *e {
script::Value::I32(x) => {
assert_eq!(x, v.unwrap_i32(), "at {}:{}", path.display(), line)
}
script::Value::I64(x) => {
assert_eq!(x, v.unwrap_i64(), "at {}:{}", path.display(), line)
}
script::Value::F32(x) => assert_eq!(
x.to_bits(),
v.unwrap_f32(),
"at {}:{}",
path.display(),
line
),
script::Value::F64(x) => assert_eq!(
x.to_bits(),
v.unwrap_f64(),
"at {}:{}",
path.display(),
line
),
};
}
}
InvokeOutcome::Trapped { message } => {
panic!(
"{}:{}: expected normal return, but a trap occurred: {}",
path.display(),
line,
message
);
}
}
}
CommandKind::AssertTrap { action, message } => {
match instances.perform_action(&mut code, &*isa, action) {
InvokeOutcome::Returned { values } => panic!(
"{}:{}: expected trap, but invoke returned with {:?}",
path.display(),
line,
values
),
InvokeOutcome::Trapped {
message: trap_message,
} => {
println!(
"{}:{}: TODO: Check the trap message: expected {}, got {}",
path.display(),
line,
message,
trap_message
);
}
}
}
CommandKind::AssertExhaustion { action } => {
match instances.perform_action(&mut code, &*isa, action) {
InvokeOutcome::Returned { values } => panic!(
"{}:{}: expected exhaustion, but invoke returned with {:?}",
path.display(),
line,
values
),
InvokeOutcome::Trapped { message } => {
println!(
"{}:{}: TODO: Check the exhaustion message: {}",
path.display(),
line,
message
);
}
}
}
command => {
println!("{}:{}: TODO: implement {:?}", path.display(), line, command);
}
}
}
}