From 0364eac4b1cf3a71bcddc2defd124f167fd3d637 Mon Sep 17 00:00:00 2001
From: Kirill Bulatov <mail4score@gmail.com>
Date: Sat, 3 Apr 2021 00:35:49 +0300
Subject: [PATCH] Allow multiple modules from the same crate in fixtures

---
 crates/base_db/src/fixture.rs                 | 43 +++++++++++++------
 .../ide_assists/src/handlers/auto_import.rs   |  5 ++-
 2 files changed, 33 insertions(+), 15 deletions(-)

diff --git a/crates/base_db/src/fixture.rs b/crates/base_db/src/fixture.rs
index 8d4641355723..516c91063c6c 100644
--- a/crates/base_db/src/fixture.rs
+++ b/crates/base_db/src/fixture.rs
@@ -57,7 +57,7 @@
 //! fn insert_source_code_here() {}
 //! "
 //! ```
-use std::{mem, str::FromStr, sync::Arc};
+use std::{mem, str::FromStr, sync::Arc, collections::hash_map::Entry};
 
 use cfg::CfgOptions;
 use rustc_hash::FxHashMap;
@@ -175,19 +175,34 @@ impl ChangeFixture {
 
             if let Some(krate) = meta.krate {
                 let crate_name = CrateName::normalize_dashes(&krate);
-                let crate_id = crate_graph.add_crate_root(
-                    file_id,
-                    meta.edition,
-                    Some(crate_name.clone().into()),
-                    meta.cfg,
-                    meta.env,
-                    Default::default(),
-                );
-                let prev = crates.insert(crate_name.clone(), crate_id);
-                assert!(prev.is_none());
-                for dep in meta.deps {
-                    let dep = CrateName::normalize_dashes(&dep);
-                    crate_deps.push((crate_name.clone(), dep))
+                match crates.entry(crate_name.clone()) {
+                    Entry::Occupied(_) => {
+                        assert_eq!(
+                            crate_deps,
+                            meta.deps
+                                .iter()
+                                .map(|dep| (crate_name.clone(), CrateName::normalize_dashes(dep)))
+                                .collect::<Vec<_>>(),
+                            "Crate {} has two modules with different dependencies in metadata",
+                            krate,
+                        )
+                    }
+                    Entry::Vacant(v) => {
+                        let new_crate_id = crate_graph.add_crate_root(
+                            file_id,
+                            meta.edition,
+                            Some(crate_name.clone().into()),
+                            meta.cfg,
+                            meta.env,
+                            Default::default(),
+                        );
+                        v.insert(new_crate_id);
+
+                        for dep in meta.deps {
+                            let dep = CrateName::normalize_dashes(&dep);
+                            crate_deps.push((crate_name.clone(), dep))
+                        }
+                    }
                 }
             } else if meta.path == "/main.rs" || meta.path == "/lib.rs" {
                 assert!(default_crate_root.is_none());
diff --git a/crates/ide_assists/src/handlers/auto_import.rs b/crates/ide_assists/src/handlers/auto_import.rs
index 5ccd7f7a2c63..737f2f3e5fb3 100644
--- a/crates/ide_assists/src/handlers/auto_import.rs
+++ b/crates/ide_assists/src/handlers/auto_import.rs
@@ -918,6 +918,9 @@ fn main() {
             auto_import,
             r"
 //- /lib.rs crate:dep
+pub mod formatters;
+
+//- /formatters.rs crate:dep
 pub struct FMT;
 pub struct fmt;
 
@@ -926,7 +929,7 @@ fn main() {
     FMT$0;
 }
 ",
-            r"use dep::FMT;
+            r"use dep::formatters::FMT;
 
 fn main() {
     FMT;