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|
use pretty_assertions::assert_eq as assert_eq_pretty;
macro_rules! assert_eq_display {
($left:expr, $right:expr) => {{
match (&$left, &$right) {
(left_val, right_val) => {
if !(*left_val == *right_val) {
panic!(
r#"assertion failed: `(left == right)`
left: `{}`,
right: `{}`"#,
left_val, right_val
)
}
}
}
}};
}
#[macro_export]
macro_rules! make_spec_test {
($type:ident, $status:ident, $name:ident, $path:expr) => {
#[test]
#[allow(non_snake_case)]
fn $name() {
use crate::tests::*;
match run_test_stringy_error($path, Feature::$type, Status::$status)
{
Ok(_) => {}
Err(s) => panic!(s),
}
}
};
}
use std::fs::File;
use std::io::Read;
use std::path::PathBuf;
use crate::error::{Error, Result};
use crate::phase::Parsed;
#[derive(Copy, Clone)]
pub enum Feature {
Parser,
Printer,
BinaryEncoding,
BinaryDecoding,
Import,
Normalization,
AlphaNormalization,
Typecheck,
TypeInference,
}
#[derive(Copy, Clone)]
pub enum Status {
Success,
Failure,
}
fn parse_file_str<'i>(file_path: &str) -> Result<Parsed> {
Parsed::parse_file(&PathBuf::from(file_path))
}
pub fn run_test_stringy_error(
base_path: &str,
feature: Feature,
status: Status,
) -> std::result::Result<(), String> {
let base_path: String = base_path.to_string();
run_test(&base_path, feature, status)
.map_err(|e| e.to_string())
.map(|_| ())
}
pub fn run_test(
base_path: &str,
feature: Feature,
status: Status,
) -> Result<()> {
use self::Feature::*;
use self::Status::*;
let base_path = base_path.to_owned();
match status {
Success => {
match feature {
BinaryDecoding => {
let expr_file_path = base_path.clone() + "A.dhallb";
let expr_file_path = PathBuf::from(&expr_file_path);
let mut expr_data = Vec::new();
{
File::open(&expr_file_path)?
.read_to_end(&mut expr_data)?;
}
let expr = Parsed::parse_binary(&expr_data)?;
let expected_file_path = base_path + "B.dhall";
let expected = parse_file_str(&expected_file_path)?;
assert_eq_pretty!(expr, expected);
return Ok(());
}
_ => {}
}
let expr_file_path = base_path.clone() + "A.dhall";
let expr = parse_file_str(&expr_file_path)?;
match feature {
Parser => {
// This exercices both parsing and binary decoding
// Compare parse/decoded
let expected_file_path = base_path + "B.dhallb";
let expected_file_path = PathBuf::from(&expected_file_path);
let mut expected_data = Vec::new();
{
File::open(&expected_file_path)?
.read_to_end(&mut expected_data)?;
}
let expected = Parsed::parse_binary(&expected_data)?;
assert_eq_pretty!(expr, expected);
return Ok(());
}
Printer => {
// Round-trip pretty-printer
let expr_string = expr.to_string();
let expected = expr;
let expr: Parsed = Parsed::parse_str(&expr_string)?;
assert_eq!(expr, expected);
return Ok(());
}
BinaryEncoding => {
let expected_file_path = base_path + "B.dhallb";
let expected_file_path = PathBuf::from(&expected_file_path);
let mut expected_data = Vec::new();
{
File::open(&expected_file_path)?
.read_to_end(&mut expected_data)?;
}
let expr_data = expr.encode()?;
// Compare bit-by-bit
if expr_data != expected_data {
// use std::io::Write;
// File::create(&expected_file_path)?.write_all(&expr_data)?;
// Pretty-print difference
assert_eq_pretty!(
serde_cbor::de::from_slice::<
serde_cbor::value::Value,
>(&expr_data)
.unwrap(),
serde_cbor::de::from_slice::<
serde_cbor::value::Value,
>(&expected_data)
.unwrap()
);
// If difference was not visible in the cbor::Value
assert_eq!(expr_data, expected_data);
}
return Ok(());
}
_ => {}
}
let expr = expr.resolve()?;
let expected_file_path = base_path + "B.dhall";
let expected = parse_file_str(&expected_file_path)?
.resolve()?
.typecheck()?
.normalize();
match feature {
Parser | Printer | BinaryEncoding | BinaryDecoding => {
unreachable!()
}
Import => {
let expr = expr.typecheck()?.normalize();
assert_eq_display!(expr, expected);
}
Typecheck => {
expr.typecheck_with(&expected.into_typed())?.get_type()?;
}
TypeInference => {
let expr = expr.typecheck()?;
let ty = expr.get_type()?.normalize();
assert_eq_display!(ty, expected);
}
Normalization => {
let expr = expr.typecheck()?.normalize();
assert_eq_display!(expr, expected);
}
AlphaNormalization => {
let expr = expr.typecheck()?.normalize().to_expr_alpha();
assert_eq_display!(expr, expected.to_expr());
}
}
}
Failure => {
let file_path = base_path + ".dhall";
match feature {
Parser => {
let err = parse_file_str(&file_path).unwrap_err();
match &err {
Error::Parse(_) => {}
Error::IO(e)
if e.kind() == std::io::ErrorKind::InvalidData => {}
e => panic!("Expected parse error, got: {:?}", e),
}
}
Printer | BinaryEncoding => unreachable!(),
BinaryDecoding => {
let expr_file_path = file_path + "b";
let mut expr_data = Vec::new();
{
File::open(&PathBuf::from(&expr_file_path))?
.read_to_end(&mut expr_data)?;
}
Parsed::parse_binary(&expr_data).unwrap_err();
}
Import => {
parse_file_str(&file_path)?.resolve().unwrap_err();
}
Normalization | AlphaNormalization => unreachable!(),
Typecheck | TypeInference => {
let res =
parse_file_str(&file_path)?.skip_resolve()?.typecheck();
match res {
Err(_) => {}
// If e did typecheck, check that it doesn't have a type
Ok(e) => {
e.get_type().unwrap_err();
}
}
}
}
}
}
Ok(())
}
mod spec {
// See build.rs
include!(concat!(env!("OUT_DIR"), "/spec_tests.rs"));
}
|
