diff options
| -rw-r--r-- | dhall/build.rs | 344 | ||||
| -rw-r--r-- | dhall/src/lib.rs | 2 | ||||
| -rw-r--r-- | dhall/src/tests.rs | 360 | ||||
| -rw-r--r-- | dhall/tests/spec.rs | 20 |
4 files changed, 16 insertions, 710 deletions
diff --git a/dhall/build.rs b/dhall/build.rs index 660d76a..4fc8545 100644 --- a/dhall/build.rs +++ b/dhall/build.rs @@ -1,351 +1,10 @@ use std::env; -use std::ffi::OsString; use std::fs::{read_to_string, File}; use std::io::{BufRead, BufReader, Write}; -use std::path::{Path, PathBuf}; -use std::rc::Rc; -use walkdir::WalkDir; +use std::path::Path; use abnf_to_pest::render_rules_to_pest; -#[derive(Debug, Clone, Copy, PartialEq, Eq)] -enum FileType { - /// Dhall source file - Text, - /// Dhall binary file - Binary, - /// Text file with hash - Hash, - /// Text file with expected text output - UI, -} - -impl FileType { - fn to_ext(self) -> &'static str { - match self { - FileType::Text => "dhall", - FileType::Binary => "dhallb", - FileType::Hash => "hash", - FileType::UI => "txt", - } - } - fn constructor(self) -> &'static str { - match self { - FileType::Text => "TestFile::Source", - FileType::Binary => "TestFile::Binary", - FileType::Hash => "TestFile::Binary", - FileType::UI => "TestFile::UI", - } - } - fn construct(self, path: &str) -> String { - // e.g. with - // path = "tests/foor/barA" - // returns something like: - // TestFile::Source("tests/foor/barA.dhall") - format!(r#"{}("{}.{}")"#, self.constructor(), path, self.to_ext()) - } -} - -fn dhall_files_in_dir<'a>( - dir: &'a Path, - take_ab_suffix: bool, - filetype: FileType, -) -> impl Iterator<Item = (String, String)> + 'a { - WalkDir::new(dir) - .into_iter() - .filter_map(|e| e.ok()) - .filter_map(move |path| { - let path = path.path().strip_prefix(dir).unwrap(); - let ext = path.extension()?; - if *ext != OsString::from(filetype.to_ext()) { - return None; - } - let path = path.to_string_lossy(); - let path = &path[..path.len() - 1 - ext.len()]; - let path = if take_ab_suffix && &path[path.len() - 1..] != "A" { - return None; - } else if take_ab_suffix { - path[..path.len() - 1].to_owned() - } else { - path.to_owned() - }; - // Transform path into a valid Rust identifier - let name = path.replace("/", "_").replace("-", "_"); - Some((name, path)) - }) -} - -#[derive(Clone)] -struct TestFeature { - /// Name of the module, used in the output of `cargo test` - module_name: &'static str, - /// Directory containing the tests files, relative to the base tests directory - directory: &'static str, - /// Relevant variant of `dhall::tests::Test` - variant: &'static str, - /// Given a file name, whether to only include it in release tests - too_slow_path: Rc<dyn Fn(&str) -> bool>, - /// Given a file name, whether to exclude it - exclude_path: Rc<dyn Fn(&str) -> bool>, - /// Type of the input file - input_type: FileType, - /// Type of the output file, if any - output_type: Option<FileType>, -} - -fn make_test_module( - w: &mut impl Write, // Where to output the generated code - base_paths: &[&Path], - feature: TestFeature, -) -> std::io::Result<()> { - writeln!(w, "mod {} {{", feature.module_name)?; - let take_ab_suffix = feature.output_type.is_some() - && (feature.output_type != Some(FileType::UI) - || feature.module_name == "printer"); - let input_suffix = if take_ab_suffix { "A" } else { "" }; - let output_suffix = if take_ab_suffix { "B" } else { "" }; - - for base_path in base_paths { - let tests_dir = base_path.join(feature.directory); - for (name, path) in - dhall_files_in_dir(&tests_dir, take_ab_suffix, feature.input_type) - { - if (feature.exclude_path)(&path) { - continue; - } - if (feature.too_slow_path)(&path) { - writeln!(w, "#[cfg(not(debug_assertions))]")?; - } - let path = tests_dir.join(path); - let path = path.to_string_lossy(); - - let input = feature - .input_type - .construct(&format!("{}{}", path, input_suffix)); - let output = match feature.output_type { - None => None, - Some(output_type @ FileType::UI) => { - // All ui outputs are in the local `tests/` directory. - let path = PathBuf::from("tests/").join( - PathBuf::from(path.as_ref()) - .strip_prefix(base_path) - .unwrap(), - ); - let path = path.to_str().unwrap(); - let output = output_type - .construct(&format!("{}{}", path, output_suffix)); - Some(output) - } - Some(output_type) => { - let output = output_type - .construct(&format!("{}{}", path, output_suffix)); - Some(output) - } - }; - - let test = match output { - None => format!("{}({})", feature.variant, input), - Some(output) => { - format!("{}({}, {})", feature.variant, input, output) - } - }; - writeln!(w, "make_spec_test!({}, {});", test, name)?; - } - } - writeln!(w, "}}")?; - Ok(()) -} - -fn generate_tests() -> std::io::Result<()> { - // To force regeneration of the test list, `touch dhall/build.rs` - let out_dir = env::var("OUT_DIR").unwrap(); - - let parser_tests_path = Path::new(&out_dir).join("spec_tests.rs"); - let spec_tests_dirs = - vec![Path::new("../dhall-lang/tests/"), Path::new("tests/")]; - - let default_feature = TestFeature { - module_name: "", - directory: "", - variant: "", - too_slow_path: Rc::new(|_path: &str| false), - exclude_path: Rc::new(|_path: &str| false), - input_type: FileType::Text, - output_type: None, - }; - - #[allow(clippy::nonminimal_bool)] - let tests = vec![ - TestFeature { - module_name: "parser_success", - directory: "parser/success/", - variant: "ParserSuccess", - too_slow_path: Rc::new(|path: &str| path == "largeExpression"), - exclude_path: Rc::new(|path: &str| { - false - // Pretty sure the test is incorrect - || path == "unit/import/urls/quotedPathFakeUrlEncode" - }), - output_type: Some(FileType::Binary), - ..default_feature - }, - TestFeature { - module_name: "parser_failure", - directory: "parser/failure/", - variant: "ParserFailure", - output_type: Some(FileType::UI), - ..default_feature.clone() - }, - TestFeature { - module_name: "printer", - directory: "parser/success/", - variant: "Printer", - too_slow_path: Rc::new(|path: &str| path == "largeExpression"), - output_type: Some(FileType::UI), - ..default_feature.clone() - }, - TestFeature { - module_name: "binary_encoding", - directory: "parser/success/", - variant: "BinaryEncoding", - too_slow_path: Rc::new(|path: &str| path == "largeExpression"), - exclude_path: Rc::new(|path: &str| { - false - // Pretty sure the test is incorrect - || path == "unit/import/urls/quotedPathFakeUrlEncode" - // See https://github.com/pyfisch/cbor/issues/109 - || path == "double" - || path == "unit/DoubleLitExponentNoDot" - || path == "unit/DoubleLitSecretelyInt" - }), - output_type: Some(FileType::Binary), - ..default_feature - }, - TestFeature { - module_name: "binary_decoding_success", - directory: "binary-decode/success/", - variant: "BinaryDecodingSuccess", - exclude_path: Rc::new(|path: &str| { - false - // We don't support bignums - || path == "unit/IntegerBigNegative" - || path == "unit/IntegerBigPositive" - || path == "unit/NaturalBig" - }), - input_type: FileType::Binary, - output_type: Some(FileType::Text), - ..default_feature.clone() - }, - TestFeature { - module_name: "binary_decoding_failure", - directory: "binary-decode/failure/", - variant: "BinaryDecodingFailure", - input_type: FileType::Binary, - output_type: Some(FileType::UI), - ..default_feature.clone() - }, - TestFeature { - module_name: "import_success", - directory: "import/success/", - variant: "ImportSuccess", - exclude_path: Rc::new(|path: &str| { - false - // TODO: the standard does not respect https://tools.ietf.org/html/rfc3986#section-5.2 - || path == "unit/asLocation/RemoteCanonicalize4" - // TODO: import headers - || path == "customHeaders" - || path == "headerForwarding" - || path == "noHeaderForwarding" - }), - output_type: Some(FileType::Text), - ..default_feature.clone() - }, - TestFeature { - module_name: "import_failure", - directory: "import/failure/", - variant: "ImportFailure", - exclude_path: Rc::new(|path: &str| { - false - // TODO: import headers - || path == "customHeadersUsingBoundVariable" - }), - output_type: Some(FileType::UI), - ..default_feature.clone() - }, - TestFeature { - module_name: "semantic_hash", - directory: "semantic-hash/success/", - variant: "SemanticHash", - exclude_path: Rc::new(|path: &str| { - false - // We don't support bignums - || path == "simple/integerToDouble" - // See https://github.com/pyfisch/cbor/issues/109 - || path == "prelude/Integer/toDouble/0" - || path == "prelude/Integer/toDouble/1" - || path == "prelude/Natural/toDouble/0" - }), - output_type: Some(FileType::Hash), - ..default_feature.clone() - }, - TestFeature { - module_name: "beta_normalize", - directory: "normalization/success/", - variant: "Normalization", - too_slow_path: Rc::new(|path: &str| path == "remoteSystems"), - exclude_path: Rc::new(|path: &str| { - false - // Cannot typecheck - || path == "unit/Sort" - // We don't support bignums - || path == "simple/integerToDouble" - // TODO: fix Double/show - || path == "prelude/JSON/number/1" - }), - output_type: Some(FileType::Text), - ..default_feature - }, - TestFeature { - module_name: "alpha_normalize", - directory: "alpha-normalization/success/", - variant: "AlphaNormalization", - exclude_path: Rc::new(|path: &str| { - // This test is designed to not typecheck - path == "unit/FunctionNestedBindingXXFree" - }), - output_type: Some(FileType::Text), - ..default_feature.clone() - }, - TestFeature { - module_name: "type_inference_success", - directory: "type-inference/success/", - variant: "TypeInferenceSuccess", - too_slow_path: Rc::new(|path: &str| path == "prelude"), - output_type: Some(FileType::Text), - ..default_feature.clone() - }, - TestFeature { - module_name: "type_inference_failure", - directory: "type-inference/failure/", - variant: "TypeInferenceFailure", - exclude_path: Rc::new(|path: &str| { - false - // TODO: enable free variable checking - || path == "unit/MergeHandlerFreeVar" - }), - output_type: Some(FileType::UI), - ..default_feature - }, - ]; - - let mut file = File::create(parser_tests_path)?; - for test in tests { - make_test_module(&mut file, &spec_tests_dirs, test)?; - } - - Ok(()) -} - fn convert_abnf_to_pest() -> std::io::Result<()> { let out_dir = env::var("OUT_DIR").unwrap(); let abnf_path = "src/syntax/text/dhall.abnf"; @@ -476,6 +135,5 @@ fn generate_pest_parser() -> std::io::Result<()> { fn main() -> std::io::Result<()> { convert_abnf_to_pest()?; generate_pest_parser()?; - generate_tests()?; Ok(()) } diff --git a/dhall/src/lib.rs b/dhall/src/lib.rs index 73f0b74..bda31d5 100644 --- a/dhall/src/lib.rs +++ b/dhall/src/lib.rs @@ -8,8 +8,6 @@ clippy::useless_format )] -mod tests; - pub mod builtins; pub mod error; pub mod operations; diff --git a/dhall/src/tests.rs b/dhall/src/tests.rs deleted file mode 100644 index c9ba377..0000000 --- a/dhall/src/tests.rs +++ /dev/null @@ -1,360 +0,0 @@ -#[cfg(not(test))] -use assert_eq as assert_eq_pretty; -#[cfg(test)] -use pretty_assertions::assert_eq as assert_eq_pretty; - -use std::env; -use std::fmt::Display; -use std::fs::{create_dir_all, read_to_string, File}; -use std::io::{Read, Write}; -use std::path::PathBuf; - -use crate::error::{ErrorKind, Result}; -use crate::syntax::{binary, Expr}; -use crate::{Normalized, Parsed, Resolved, Typed}; - -macro_rules! assert_eq_display { - ($left:expr, $right:expr) => {{ - match (&$left, &$right) { - (left_val, right_val) => { - if !(*left_val == *right_val) { - panic!( - r#"assertion failed: `(left == right)` - left: `{}`, -right: `{}`"#, - left_val, right_val - ) - } - } - } - }}; -} - -/// Wrapper around string slice that makes debug output `{:?}` to print string same way as `{}`. -/// Used in different `assert*!` macros in combination with `pretty_assertions` crate to make -/// test failures to show nice diffs. -#[derive(PartialEq, Eq)] -#[doc(hidden)] -pub struct PrettyString(String); - -/// Make diff to display string as multi-line string -impl std::fmt::Debug for PrettyString { - fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { - f.write_str(&self.0) - } -} - -macro_rules! assert_eq_pretty_str { - ($left:expr, $right:expr) => { - assert_eq_pretty!( - PrettyString($left.to_string()), - PrettyString($right.to_string()) - ); - }; -} - -#[allow(dead_code)] -enum Test { - ParserSuccess(TestFile, TestFile), - ParserFailure(TestFile, TestFile), - Printer(TestFile, TestFile), - BinaryEncoding(TestFile, TestFile), - BinaryDecodingSuccess(TestFile, TestFile), - BinaryDecodingFailure(TestFile, TestFile), - ImportSuccess(TestFile, TestFile), - ImportFailure(TestFile, TestFile), - SemanticHash(TestFile, TestFile), - TypeInferenceSuccess(TestFile, TestFile), - TypeInferenceFailure(TestFile, TestFile), - Normalization(TestFile, TestFile), - AlphaNormalization(TestFile, TestFile), -} - -#[allow(dead_code)] -enum TestFile { - Source(&'static str), - Binary(&'static str), - UI(&'static str), -} - -impl TestFile { - pub fn path(&self) -> PathBuf { - match self { - TestFile::Source(path) - | TestFile::Binary(path) - | TestFile::UI(path) => PathBuf::from("dhall").join(path), - } - } - - /// Parse the target file - pub fn parse(&self) -> Result<Parsed> { - match self { - TestFile::Source(_) => Parsed::parse_file(&self.path()), - TestFile::Binary(_) => Parsed::parse_binary_file(&self.path()), - TestFile::UI(_) => panic!("Can't parse a UI test file"), - } - } - /// Parse and resolve the target file - pub fn resolve(&self) -> Result<Resolved> { - Ok(self.parse()?.resolve()?) - } - /// Parse, resolve and tck the target file - pub fn typecheck(&self) -> Result<Typed> { - Ok(self.resolve()?.typecheck()?) - } - /// Parse, resolve, tck and normalize the target file - pub fn normalize(&self) -> Result<Normalized> { - Ok(self.typecheck()?.normalize()) - } - - /// If UPDATE_TEST_FILES=1, we overwrite the output files with our own output. - fn force_update() -> bool { - env::var("UPDATE_TEST_FILES") == Ok("1".to_string()) - } - /// Write the provided expression to the pointed file. - fn write_expr(&self, expr: impl Into<Expr>) -> Result<()> { - let expr = expr.into(); - let path = self.path(); - create_dir_all(path.parent().unwrap())?; - let mut file = File::create(path)?; - match self { - TestFile::Source(_) => { - writeln!(file, "{}", expr)?; - } - TestFile::Binary(_) => { - let expr_data = binary::encode(&expr)?; - file.write_all(&expr_data)?; - } - TestFile::UI(_) => panic!("Can't write an expression to a UI file"), - } - Ok(()) - } - /// Write the provided string to the pointed file. - fn write_ui(&self, x: impl Display) -> Result<()> { - match self { - TestFile::UI(_) => {} - _ => panic!("Can't write a ui string to a dhall file"), - } - let path = self.path(); - create_dir_all(path.parent().unwrap())?; - let mut file = File::create(path)?; - writeln!(file, "{}", x)?; - Ok(()) - } - - /// Check that the provided expression matches the file contents. - pub fn compare(&self, expr: impl Into<Expr>) -> Result<()> { - let expr = expr.into(); - if !self.path().is_file() { - return self.write_expr(expr); - } - - let expected = self.parse()?.to_expr(); - if expr != expected { - if Self::force_update() { - self.write_expr(expr)?; - } else { - assert_eq_display!(expr, expected); - } - } - Ok(()) - } - /// Check that the provided expression matches the file contents. - pub fn compare_debug(&self, expr: impl Into<Expr>) -> Result<()> { - let expr = expr.into(); - if !self.path().is_file() { - return self.write_expr(expr); - } - - let expected = self.parse()?.to_expr(); - if expr != expected { - if Self::force_update() { - self.write_expr(expr)?; - } else { - assert_eq_pretty!(expr, expected); - } - } - Ok(()) - } - /// Check that the provided expression matches the file contents. - pub fn compare_binary(&self, expr: impl Into<Expr>) -> Result<()> { - let expr = expr.into(); - match self { - TestFile::Binary(_) => {} - _ => panic!("This is not a binary file"), - } - if !self.path().is_file() { - return self.write_expr(expr); - } - - let expr_data = binary::encode(&expr)?; - let expected_data = { - let mut data = Vec::new(); - File::open(&self.path())?.read_to_end(&mut data)?; - data - }; - - // Compare bit-by-bit - if expr_data != expected_data { - if Self::force_update() { - self.write_expr(expr)?; - } else { - use serde_cbor::de::from_slice; - use serde_cbor::value::Value; - // Pretty-print difference - assert_eq_pretty!( - from_slice::<Value>(&expr_data).unwrap(), - from_slice::<Value>(&expected_data).unwrap() - ); - // If difference was not visible in the cbor::Nir, compare normally. - assert_eq!(expr_data, expected_data); - } - } - Ok(()) - } - /// Check that the provided string matches the file contents. Writes to the corresponding file - /// if it is missing. - pub fn compare_ui(&self, x: impl Display) -> Result<()> { - if !self.path().is_file() { - return self.write_ui(x); - } - - let expected = read_to_string(self.path())?; - let msg = format!("{}\n", x); - if msg != expected { - if Self::force_update() { - self.write_ui(x)?; - } else { - assert_eq_pretty_str!(expected, msg); - } - } - Ok(()) - } -} - -#[allow(dead_code)] -fn run_test_or_panic(test: Test) { - let res = if env::var("CI_GRCOV").is_ok() { - // Augment stack size when running with 0 inlining to avoid overflows - std::thread::Builder::new() - .stack_size(128 * 1024 * 1024) - .spawn(|| run_test(test)) - .unwrap() - .join() - .unwrap() - } else { - run_test(test) - }; - match res { - Ok(_) => {} - Err(e) => panic!(e.to_string()), - } -} - -fn run_test(test: Test) -> Result<()> { - use self::Test::*; - // Setup current directory to the root of the repository. Important for `as Location` tests. - let root_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR")) - .parent() - .unwrap() - .to_path_buf(); - env::set_current_dir(root_dir.as_path())?; - // Set environment variable for import tests. - env::set_var("DHALL_TEST_VAR", "6 * 7"); - - match test { - ParserSuccess(expr, expected) => { - let expr = expr.parse()?; - // This exercices both parsing and binary decoding - expected.compare_debug(expr)?; - } - ParserFailure(expr, expected) => { - use std::io; - let err = expr.parse().unwrap_err(); - match err.kind() { - ErrorKind::Parse(_) => {} - ErrorKind::IO(e) if e.kind() == io::ErrorKind::InvalidData => {} - e => panic!("Expected parse error, got: {:?}", e), - } - expected.compare_ui(err)?; - } - BinaryEncoding(expr, expected) => { - let expr = expr.parse()?; - expected.compare_binary(expr)?; - } - BinaryDecodingSuccess(expr, expected) => { - let expr = expr.parse()?; - expected.compare_debug(expr)?; - } - BinaryDecodingFailure(expr, expected) => { - let err = expr.parse().unwrap_err(); - expected.compare_ui(err)?; - } - Printer(expr, expected) => { - let parsed = expr.parse()?; - // Round-trip pretty-printer - let reparsed = Parsed::parse_str(&parsed.to_string())?; - assert_eq!(reparsed, parsed); - expected.compare_ui(parsed)?; - } - ImportSuccess(expr, expected) => { - // Configure cache for import tests - env::set_var( - "XDG_CACHE_HOME", - root_dir - .join("dhall-lang") - .join("tests") - .join("import") - .join("cache") - .as_path(), - ); - let expr = expr.normalize()?; - expected.compare(expr)?; - } - ImportFailure(expr, expected) => { - let err = expr.resolve().unwrap_err(); - expected.compare_ui(err)?; - } - SemanticHash(expr, expected) => { - let expr = expr.normalize()?.to_expr_alpha(); - let hash = hex::encode(expr.hash()?); - expected.compare_ui(format!("sha256:{}", hash))?; - } - TypeInferenceSuccess(expr, expected) => { - let ty = expr.typecheck()?.get_type()?; - expected.compare(ty)?; - } - TypeInferenceFailure(expr, expected) => { - let err = expr.typecheck().unwrap_err(); - expected.compare_ui(err)?; - } - Normalization(expr, expected) => { - let expr = expr.normalize()?; - expected.compare(expr)?; - } - AlphaNormalization(expr, expected) => { - let expr = expr.normalize()?.to_expr_alpha(); - expected.compare(expr)?; - } - } - - Ok(()) -} - -#[cfg(test)] -mod spec { - macro_rules! make_spec_test { - ($type:expr, $name:ident) => { - #[test] - #[allow(non_snake_case)] - fn $name() { - use crate::tests::Test::*; - use crate::tests::*; - run_test_or_panic($type); - } - }; - } - - // See build.rs - // include!(concat!(env!("OUT_DIR"), "/spec_tests.rs")); -} diff --git a/dhall/tests/spec.rs b/dhall/tests/spec.rs index ca09ef0..628f084 100644 --- a/dhall/tests/spec.rs +++ b/dhall/tests/spec.rs @@ -470,8 +470,6 @@ fn define_features() -> Vec<TestFeature> { variant: SpecTestKind::ImportSuccess, exclude_path: Rc::new(|path: &str| { false - // TODO: import hash - || path == "hashFromCache" // TODO: the standard does not respect https://tools.ietf.org/html/rfc3986#section-5.2 || path == "unit/asLocation/RemoteCanonicalize4" // TODO: import headers @@ -579,9 +577,11 @@ fn run_test_or_panic(test: &SpecTest) { fn run_test(test: &SpecTest) -> Result<()> { use self::SpecTestKind::*; // Setup current directory to the root of the repository. Important for `as Location` tests. - env::set_current_dir( - PathBuf::from(env!("CARGO_MANIFEST_DIR")).parent().unwrap(), - )?; + let root_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR")) + .parent() + .unwrap() + .to_path_buf(); + env::set_current_dir(root_dir.as_path())?; // Set environment variable for import tests. env::set_var("DHALL_TEST_VAR", "6 * 7"); @@ -626,6 +626,16 @@ fn run_test(test: &SpecTest) -> Result<()> { expected.compare_ui(parsed)?; } ImportSuccess => { + // Configure cache for import tests + env::set_var( + "XDG_CACHE_HOME", + root_dir + .join("dhall-lang") + .join("tests") + .join("import") + .join("cache") + .as_path(), + ); let expr = expr.normalize()?; expected.compare(expr)?; } |