From 5518a65037f862fc45e72f1256aa4994a6b14a57 Mon Sep 17 00:00:00 2001
From: Yoshua Wuyts <yoshuawuyts@gmail.com>
Date: Sat, 17 Apr 2021 16:39:03 +0200
Subject: Add an error message to fixture errors

---
 crates/base_db/src/fixture.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'crates')

diff --git a/crates/base_db/src/fixture.rs b/crates/base_db/src/fixture.rs
index 04e2be390..30f85bf3a 100644
--- a/crates/base_db/src/fixture.rs
+++ b/crates/base_db/src/fixture.rs
@@ -54,7 +54,9 @@ pub trait WithFixture: Default + SourceDatabaseExt + 'static {
         let fixture = ChangeFixture::parse(ra_fixture);
         let mut db = Self::default();
         fixture.change.apply(&mut db);
-        let (file_id, range_or_offset) = fixture.file_position.unwrap();
+        let (file_id, range_or_offset) = fixture
+            .file_position
+            .expect("Could not find file position in fixture. Did you forget to add an `$0`?");
         (db, file_id, range_or_offset)
     }
 
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