internal: Add run-tests command

crates/hir-def/src/attr.rs

@@ -272,6 +272,18 @@ impl Attrs {
         self.by_key("proc_macro_derive").exists()
     }
 
+    pub fn is_test(&self) -> bool {
+        self.by_key("test").exists()
+    }
+
+    pub fn is_ignore(&self) -> bool {
+        self.by_key("ignore").exists()
+    }
+
+    pub fn is_bench(&self) -> bool {
+        self.by_key("bench").exists()
+    }
+
     pub fn is_unstable(&self) -> bool {
         self.by_key("unstable").exists()
     }

crates/hir/src/lib.rs

@@ -1927,6 +1927,21 @@ impl Function {
         db.function_data(self.id).has_async_kw()
     }
 
+    /// Does this function have `#[test]` attribute?
+    pub fn is_test(self, db: &dyn HirDatabase) -> bool {
+        db.function_data(self.id).attrs.is_test()
+    }
+
+    /// Does this function have the ignore attribute?
+    pub fn is_ignore(self, db: &dyn HirDatabase) -> bool {
+        db.function_data(self.id).attrs.is_ignore()
+    }
+
+    /// Does this function have `#[bench]` attribute?
+    pub fn is_bench(self, db: &dyn HirDatabase) -> bool {
+        db.function_data(self.id).attrs.is_bench()
+    }
+
     pub fn is_unsafe_to_call(self, db: &dyn HirDatabase) -> bool {
         hir_ty::is_fn_unsafe_to_call(db, self.id)
     }

crates/ide/src/runnables.rs

@@ -2,7 +2,7 @@ use std::fmt;
 
 use ast::HasName;
 use cfg::CfgExpr;
-use hir::{AsAssocItem, HasAttrs, HasSource, Semantics};
+use hir::{db::HirDatabase, AsAssocItem, HasAttrs, HasSource, Semantics};
 use ide_assists::utils::test_related_attribute;
 use ide_db::{
     base_db::{FilePosition, FileRange},
@@ -14,7 +14,7 @@ use ide_db::{
 use itertools::Itertools;
 use stdx::{always, format_to};
 use syntax::{
-    ast::{self, AstNode, HasAttrs as _},
+    ast::{self, AstNode},
     SmolStr, SyntaxNode,
 };
 
@@ -307,7 +307,6 @@ pub(crate) fn runnable_fn(
     sema: &Semantics<'_, RootDatabase>,
     def: hir::Function,
 ) -> Option<Runnable> {
-    let func = def.source(sema.db)?;
     let name = def.name(sema.db).to_smol_str();
 
     let root = def.module(sema.db).krate().root_module(sema.db);
@@ -323,10 +322,10 @@ pub(crate) fn runnable_fn(
             canonical_path.map(TestId::Path).unwrap_or(TestId::Name(name))
         };
 
-        if test_related_attribute(&func.value).is_some() {
-            let attr = TestAttr::from_fn(&func.value);
+        if def.is_test(sema.db) {
+            let attr = TestAttr::from_fn(sema.db, def);
             RunnableKind::Test { test_id: test_id(), attr }
-        } else if func.value.has_atom_attr("bench") {
+        } else if def.is_bench(sema.db) {
             RunnableKind::Bench { test_id: test_id() }
         } else {
             return None;
@@ -335,7 +334,7 @@ pub(crate) fn runnable_fn(
 
     let nav = NavigationTarget::from_named(
         sema.db,
-        func.as_ref().map(|it| it as &dyn ast::HasName),
+        def.source(sema.db)?.as_ref().map(|it| it as &dyn ast::HasName),
         SymbolKind::Function,
     );
     let cfg = def.attrs(sema.db).cfg();
@@ -487,12 +486,8 @@ pub struct TestAttr {
 }
 
 impl TestAttr {
-    fn from_fn(fn_def: &ast::Fn) -> TestAttr {
-        let ignore = fn_def
-            .attrs()
-            .filter_map(|attr| attr.simple_name())
-            .any(|attribute_text| attribute_text == "ignore");
-        TestAttr { ignore }
+    fn from_fn(db: &dyn HirDatabase, fn_def: hir::Function) -> TestAttr {
+        TestAttr { ignore: fn_def.is_ignore(db) }
     }
 }
 

crates/rust-analyzer/src/bin/main.rs

@@ -82,6 +82,7 @@ fn main() -> anyhow::Result<()> {
         flags::RustAnalyzerCmd::Search(cmd) => cmd.run()?,
         flags::RustAnalyzerCmd::Lsif(cmd) => cmd.run()?,
         flags::RustAnalyzerCmd::Scip(cmd) => cmd.run()?,
+        flags::RustAnalyzerCmd::RunTests(cmd) => cmd.run()?,
     }
     Ok(())
 }

crates/rust-analyzer/src/cli.rs

@@ -10,12 +10,17 @@ mod diagnostics;
 mod ssr;
 mod lsif;
 mod scip;
+mod run_tests;
 
 mod progress_report;
 
 use std::io::Read;
 
+use anyhow::Result;
+use hir::{Module, Name};
+use hir_ty::db::HirDatabase;
 use ide::AnalysisHost;
+use itertools::Itertools;
 use vfs::Vfs;
 
 #[derive(Clone, Copy)]
@@ -70,3 +75,14 @@ fn print_memory_usage(mut host: AnalysisHost, vfs: Vfs) {
 
     eprintln!("{remaining:>8}        Remaining");
 }
+
+fn full_name_of_item(db: &dyn HirDatabase, module: Module, name: Name) -> String {
+    module
+        .path_to_root(db)
+        .into_iter()
+        .rev()
+        .filter_map(|it| it.name(db))
+        .chain(Some(name))
+        .map(|it| it.display(db.upcast()).to_string())
+        .join("::")
+}

crates/rust-analyzer/src/cli/analysis_stats.rs

@@ -34,6 +34,7 @@ use vfs::{AbsPathBuf, Vfs, VfsPath};
 
 use crate::cli::{
     flags::{self, OutputFormat},
+    full_name_of_item,
     load_cargo::{load_workspace, LoadCargoConfig, ProcMacroServerChoice},
     print_memory_usage,
     progress_report::ProgressReport,
@@ -274,15 +275,7 @@ impl flags::AnalysisStats {
                 continue
             };
             if verbosity.is_spammy() {
-                let full_name = a
-                    .module(db)
-                    .path_to_root(db)
-                    .into_iter()
-                    .rev()
-                    .filter_map(|it| it.name(db))
-                    .chain(Some(a.name(db)))
-                    .map(|it| it.display(db).to_string())
-                    .join("::");
+                let full_name = full_name_of_item(db, a.module(db), a.name(db));
                 println!("Data layout for {full_name} failed due {e:?}");
             }
             fail += 1;
@@ -304,15 +297,8 @@ impl flags::AnalysisStats {
                 continue;
             };
             if verbosity.is_spammy() {
-                let full_name = c
-                    .module(db)
-                    .path_to_root(db)
-                    .into_iter()
-                    .rev()
-                    .filter_map(|it| it.name(db))
-                    .chain(c.name(db))
-                    .map(|it| it.display(db).to_string())
-                    .join("::");
+                let full_name =
+                    full_name_of_item(db, c.module(db), c.name(db).unwrap_or(Name::missing()));
                 println!("Const eval for {full_name} failed due {e:?}");
             }
             fail += 1;

crates/rust-analyzer/src/cli/flags.rs

@@ -90,6 +90,12 @@ xflags::xflags! {
             optional --skip-const-eval
         }
 
+        /// Run unit tests of the project using mir interpreter
+        cmd run-tests {
+            /// Directory with Cargo.toml.
+            required path: PathBuf
+        }
+
         cmd diagnostics {
             /// Directory with Cargo.toml.
             required path: PathBuf
@@ -147,6 +153,7 @@ pub enum RustAnalyzerCmd {
     Symbols(Symbols),
     Highlight(Highlight),
     AnalysisStats(AnalysisStats),
+    RunTests(RunTests),
     Diagnostics(Diagnostics),
     Ssr(Ssr),
     Search(Search),
@@ -182,16 +189,21 @@ pub struct AnalysisStats {
     pub parallel: bool,
     pub memory_usage: bool,
     pub source_stats: bool,
-    pub skip_lowering: bool,
-    pub skip_inference: bool,
-    pub skip_mir_stats: bool,
-    pub skip_data_layout: bool,
-    pub skip_const_eval: bool,
     pub only: Option<String>,
     pub with_deps: bool,
     pub no_sysroot: bool,
     pub disable_build_scripts: bool,
     pub disable_proc_macros: bool,
+    pub skip_lowering: bool,
+    pub skip_inference: bool,
+    pub skip_mir_stats: bool,
+    pub skip_data_layout: bool,
+    pub skip_const_eval: bool,
+}
+
+#[derive(Debug)]
+pub struct RunTests {
+    pub path: PathBuf,
 }
 
 #[derive(Debug)]
@@ -223,6 +235,7 @@ pub struct Lsif {
 #[derive(Debug)]
 pub struct Scip {
     pub path: PathBuf,
+
     pub output: Option<PathBuf>,
 }
 

crates/rust-analyzer/src/cli/run_tests.rs

@@ -0,0 +1,92 @@
+//! Run all tests in a project, similar to `cargo test`, but using the mir interpreter.
+
+use hir::{Crate, Module};
+use hir_ty::db::HirDatabase;
+use ide_db::{base_db::SourceDatabaseExt, LineIndexDatabase};
+use profile::StopWatch;
+use project_model::{CargoConfig, RustLibSource};
+use syntax::TextRange;
+
+use crate::cli::{
+    flags, full_name_of_item,
+    load_cargo::load_workspace_at,
+    load_cargo::{LoadCargoConfig, ProcMacroServerChoice},
+    Result,
+};
+
+impl flags::RunTests {
+    pub fn run(self) -> Result<()> {
+        let mut cargo_config = CargoConfig::default();
+        cargo_config.sysroot = Some(RustLibSource::Discover);
+        let load_cargo_config = LoadCargoConfig {
+            load_out_dirs_from_check: true,
+            with_proc_macro_server: ProcMacroServerChoice::Sysroot,
+            prefill_caches: false,
+        };
+        let (host, _vfs, _proc_macro) =
+            load_workspace_at(&self.path, &cargo_config, &load_cargo_config, &|_| {})?;
+        let db = host.raw_database();
+
+        let tests = all_modules(db)
+            .into_iter()
+            .flat_map(|x| x.declarations(db))
+            .filter_map(|x| match x {
+                hir::ModuleDef::Function(f) => Some(f),
+                _ => None,
+            })
+            .filter(|x| x.is_test(db));
+        let span_formatter = |file_id, text_range: TextRange| {
+            let line_col = match db.line_index(file_id).try_line_col(text_range.start()) {
+                None => " (unknown line col)".to_string(),
+                Some(x) => format!("#{}:{}", x.line + 1, x.col),
+            };
+            let path = &db
+                .source_root(db.file_source_root(file_id))
+                .path_for_file(&file_id)
+                .map(|x| x.to_string());
+            let path = path.as_deref().unwrap_or("<unknown file>");
+            format!("file://{path}{line_col}")
+        };
+        let mut pass_count = 0;
+        let mut ignore_count = 0;
+        let mut fail_count = 0;
+        let mut sw_all = StopWatch::start();
+        for test in tests {
+            let full_name = full_name_of_item(db, test.module(db), test.name(db));
+            println!("test {}", full_name);
+            if test.is_ignore(db) {
+                println!("ignored");
+                ignore_count += 1;
+                continue;
+            }
+            let mut sw_one = StopWatch::start();
+            let result = test.eval(db, span_formatter);
+            if result.trim() == "pass" {
+                pass_count += 1;
+            } else {
+                fail_count += 1;
+            }
+            println!("{}", result);
+            eprintln!("{:<20} {}", format!("test {}", full_name), sw_one.elapsed());
+        }
+        println!("{pass_count} passed, {fail_count} failed, {ignore_count} ignored");
+        eprintln!("{:<20} {}", "All tests", sw_all.elapsed());
+        Ok(())
+    }
+}
+
+fn all_modules(db: &dyn HirDatabase) -> Vec<Module> {
+    let mut worklist: Vec<_> = Crate::all(db)
+        .into_iter()
+        .filter(|x| x.origin(db).is_local())
+        .map(|krate| krate.root_module(db))
+        .collect();
+    let mut modules = Vec::new();
+
+    while let Some(module) = worklist.pop() {
+        modules.push(module);
+        worklist.extend(module.children(db));
+    }
+
+    modules
+}