From 6a77ec7bbe6ddbf663dce9529d11d1bb56c5489a Mon Sep 17 00:00:00 2001 From: Aleksey Kladov Date: Thu, 13 Aug 2020 16:35:29 +0200 Subject: Rename ra_hir_ty -> hir_ty --- crates/hir_ty/src/tests.rs | 359 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 359 insertions(+) create mode 100644 crates/hir_ty/src/tests.rs (limited to 'crates/hir_ty/src/tests.rs') diff --git a/crates/hir_ty/src/tests.rs b/crates/hir_ty/src/tests.rs new file mode 100644 index 000000000..c953925ec --- /dev/null +++ b/crates/hir_ty/src/tests.rs @@ -0,0 +1,359 @@ +mod never_type; +mod coercion; +mod regression; +mod simple; +mod patterns; +mod traits; +mod method_resolution; +mod macros; +mod display_source_code; + +use std::sync::Arc; + +use base_db::{fixture::WithFixture, FileRange, SourceDatabase, SourceDatabaseExt}; +use expect::Expect; +use hir_def::{ + body::{BodySourceMap, SyntheticSyntax}, + child_by_source::ChildBySource, + db::DefDatabase, + item_scope::ItemScope, + keys, + nameres::CrateDefMap, + AssocItemId, DefWithBodyId, LocalModuleId, Lookup, ModuleDefId, +}; +use hir_expand::{db::AstDatabase, InFile}; +use stdx::format_to; +use syntax::{ + algo, + ast::{self, AstNode}, + SyntaxNode, +}; + +use crate::{ + db::HirDatabase, display::HirDisplay, infer::TypeMismatch, test_db::TestDB, InferenceResult, Ty, +}; + +// These tests compare the inference results for all expressions in a file +// against snapshots of the expected results using expect. Use +// `env UPDATE_EXPECT=1 cargo test -p hir_ty` to update the snapshots. + +fn setup_tracing() -> tracing::subscriber::DefaultGuard { + use tracing_subscriber::{layer::SubscriberExt, EnvFilter, Registry}; + use tracing_tree::HierarchicalLayer; + let filter = EnvFilter::from_env("CHALK_DEBUG"); + let layer = HierarchicalLayer::default() + .with_indent_lines(true) + .with_ansi(false) + .with_indent_amount(2) + .with_writer(std::io::stderr); + let subscriber = Registry::default().with(filter).with(layer); + tracing::subscriber::set_default(subscriber) +} + +fn check_types(ra_fixture: &str) { + check_types_impl(ra_fixture, false) +} + +fn check_types_source_code(ra_fixture: &str) { + check_types_impl(ra_fixture, true) +} + +fn check_types_impl(ra_fixture: &str, display_source: bool) { + let _tracing = setup_tracing(); + let db = TestDB::with_files(ra_fixture); + let mut checked_one = false; + for (file_id, annotations) in db.extract_annotations() { + for (range, expected) in annotations { + let ty = type_at_range(&db, FileRange { file_id, range }); + let actual = if display_source { + let module = db.module_for_file(file_id); + ty.display_source_code(&db, module).unwrap() + } else { + ty.display(&db).to_string() + }; + assert_eq!(expected, actual); + checked_one = true; + } + } + assert!(checked_one, "no `//^` annotations found"); +} + +fn type_at_range(db: &TestDB, pos: FileRange) -> Ty { + let file = db.parse(pos.file_id).ok().unwrap(); + let expr = algo::find_node_at_range::(file.syntax(), pos.range).unwrap(); + let fn_def = expr.syntax().ancestors().find_map(ast::Fn::cast).unwrap(); + let module = db.module_for_file(pos.file_id); + let func = *module.child_by_source(db)[keys::FUNCTION] + .get(&InFile::new(pos.file_id.into(), fn_def)) + .unwrap(); + + let (_body, source_map) = db.body_with_source_map(func.into()); + if let Some(expr_id) = source_map.node_expr(InFile::new(pos.file_id.into(), &expr)) { + let infer = db.infer(func.into()); + return infer[expr_id].clone(); + } + panic!("Can't find expression") +} + +fn infer(ra_fixture: &str) -> String { + infer_with_mismatches(ra_fixture, false) +} + +fn infer_with_mismatches(content: &str, include_mismatches: bool) -> String { + let _tracing = setup_tracing(); + let (db, file_id) = TestDB::with_single_file(content); + + let mut buf = String::new(); + + let mut infer_def = |inference_result: Arc, + body_source_map: Arc| { + let mut types: Vec<(InFile, &Ty)> = Vec::new(); + let mut mismatches: Vec<(InFile, &TypeMismatch)> = Vec::new(); + + for (pat, ty) in inference_result.type_of_pat.iter() { + let syntax_ptr = match body_source_map.pat_syntax(pat) { + Ok(sp) => { + let root = db.parse_or_expand(sp.file_id).unwrap(); + sp.map(|ptr| { + ptr.either( + |it| it.to_node(&root).syntax().clone(), + |it| it.to_node(&root).syntax().clone(), + ) + }) + } + Err(SyntheticSyntax) => continue, + }; + types.push((syntax_ptr, ty)); + } + + for (expr, ty) in inference_result.type_of_expr.iter() { + let node = match body_source_map.expr_syntax(expr) { + Ok(sp) => { + let root = db.parse_or_expand(sp.file_id).unwrap(); + sp.map(|ptr| ptr.to_node(&root).syntax().clone()) + } + Err(SyntheticSyntax) => continue, + }; + types.push((node.clone(), ty)); + if let Some(mismatch) = inference_result.type_mismatch_for_expr(expr) { + mismatches.push((node, mismatch)); + } + } + + // sort ranges for consistency + types.sort_by_key(|(node, _)| { + let range = node.value.text_range(); + (range.start(), range.end()) + }); + for (node, ty) in &types { + let (range, text) = if let Some(self_param) = ast::SelfParam::cast(node.value.clone()) { + (self_param.self_token().unwrap().text_range(), "self".to_string()) + } else { + (node.value.text_range(), node.value.text().to_string().replace("\n", " ")) + }; + let macro_prefix = if node.file_id != file_id.into() { "!" } else { "" }; + format_to!( + buf, + "{}{:?} '{}': {}\n", + macro_prefix, + range, + ellipsize(text, 15), + ty.display(&db) + ); + } + if include_mismatches { + mismatches.sort_by_key(|(node, _)| { + let range = node.value.text_range(); + (range.start(), range.end()) + }); + for (src_ptr, mismatch) in &mismatches { + let range = src_ptr.value.text_range(); + let macro_prefix = if src_ptr.file_id != file_id.into() { "!" } else { "" }; + format_to!( + buf, + "{}{:?}: expected {}, got {}\n", + macro_prefix, + range, + mismatch.expected.display(&db), + mismatch.actual.display(&db), + ); + } + } + }; + + let module = db.module_for_file(file_id); + let crate_def_map = db.crate_def_map(module.krate); + + let mut defs: Vec = Vec::new(); + visit_module(&db, &crate_def_map, module.local_id, &mut |it| defs.push(it)); + defs.sort_by_key(|def| match def { + DefWithBodyId::FunctionId(it) => { + let loc = it.lookup(&db); + let tree = db.item_tree(loc.id.file_id); + tree.source(&db, loc.id).syntax().text_range().start() + } + DefWithBodyId::ConstId(it) => { + let loc = it.lookup(&db); + let tree = db.item_tree(loc.id.file_id); + tree.source(&db, loc.id).syntax().text_range().start() + } + DefWithBodyId::StaticId(it) => { + let loc = it.lookup(&db); + let tree = db.item_tree(loc.id.file_id); + tree.source(&db, loc.id).syntax().text_range().start() + } + }); + for def in defs { + let (_body, source_map) = db.body_with_source_map(def); + let infer = db.infer(def); + infer_def(infer, source_map); + } + + buf.truncate(buf.trim_end().len()); + buf +} + +fn visit_module( + db: &TestDB, + crate_def_map: &CrateDefMap, + module_id: LocalModuleId, + cb: &mut dyn FnMut(DefWithBodyId), +) { + visit_scope(db, crate_def_map, &crate_def_map[module_id].scope, cb); + for impl_id in crate_def_map[module_id].scope.impls() { + let impl_data = db.impl_data(impl_id); + for &item in impl_data.items.iter() { + match item { + AssocItemId::FunctionId(it) => { + let def = it.into(); + cb(def); + let body = db.body(def); + visit_scope(db, crate_def_map, &body.item_scope, cb); + } + AssocItemId::ConstId(it) => { + let def = it.into(); + cb(def); + let body = db.body(def); + visit_scope(db, crate_def_map, &body.item_scope, cb); + } + AssocItemId::TypeAliasId(_) => (), + } + } + } + + fn visit_scope( + db: &TestDB, + crate_def_map: &CrateDefMap, + scope: &ItemScope, + cb: &mut dyn FnMut(DefWithBodyId), + ) { + for decl in scope.declarations() { + match decl { + ModuleDefId::FunctionId(it) => { + let def = it.into(); + cb(def); + let body = db.body(def); + visit_scope(db, crate_def_map, &body.item_scope, cb); + } + ModuleDefId::ConstId(it) => { + let def = it.into(); + cb(def); + let body = db.body(def); + visit_scope(db, crate_def_map, &body.item_scope, cb); + } + ModuleDefId::StaticId(it) => { + let def = it.into(); + cb(def); + let body = db.body(def); + visit_scope(db, crate_def_map, &body.item_scope, cb); + } + ModuleDefId::TraitId(it) => { + let trait_data = db.trait_data(it); + for &(_, item) in trait_data.items.iter() { + match item { + AssocItemId::FunctionId(it) => cb(it.into()), + AssocItemId::ConstId(it) => cb(it.into()), + AssocItemId::TypeAliasId(_) => (), + } + } + } + ModuleDefId::ModuleId(it) => visit_module(db, crate_def_map, it.local_id, cb), + _ => (), + } + } + } +} + +fn ellipsize(mut text: String, max_len: usize) -> String { + if text.len() <= max_len { + return text; + } + let ellipsis = "..."; + let e_len = ellipsis.len(); + let mut prefix_len = (max_len - e_len) / 2; + while !text.is_char_boundary(prefix_len) { + prefix_len += 1; + } + let mut suffix_len = max_len - e_len - prefix_len; + while !text.is_char_boundary(text.len() - suffix_len) { + suffix_len += 1; + } + text.replace_range(prefix_len..text.len() - suffix_len, ellipsis); + text +} + +#[test] +fn typing_whitespace_inside_a_function_should_not_invalidate_types() { + let (mut db, pos) = TestDB::with_position( + " + //- /lib.rs + fn foo() -> i32 { + <|>1 + 1 + } + ", + ); + { + let events = db.log_executed(|| { + let module = db.module_for_file(pos.file_id); + let crate_def_map = db.crate_def_map(module.krate); + visit_module(&db, &crate_def_map, module.local_id, &mut |def| { + db.infer(def); + }); + }); + assert!(format!("{:?}", events).contains("infer")) + } + + let new_text = " + fn foo() -> i32 { + 1 + + + 1 + } + " + .to_string(); + + db.set_file_text(pos.file_id, Arc::new(new_text)); + + { + let events = db.log_executed(|| { + let module = db.module_for_file(pos.file_id); + let crate_def_map = db.crate_def_map(module.krate); + visit_module(&db, &crate_def_map, module.local_id, &mut |def| { + db.infer(def); + }); + }); + assert!(!format!("{:?}", events).contains("infer"), "{:#?}", events) + } +} + +fn check_infer(ra_fixture: &str, expect: Expect) { + let mut actual = infer(ra_fixture); + actual.push('\n'); + expect.assert_eq(&actual); +} + +fn check_infer_with_mismatches(ra_fixture: &str, expect: Expect) { + let mut actual = infer_with_mismatches(ra_fixture, true); + actual.push('\n'); + expect.assert_eq(&actual); +} -- cgit v1.2.3