jstest: lower: Improve an assert message

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/jstest/jst-lower.rs b/jstest/jst-lower.rs
index b4d118f439b4d4880017d0d04f24de65e2143911..f76b4f5dc33ee0b0a61d3be9ba22ed0945d8317d 100644 (file)
--- a/jstest/jst-lower.rs
+++ b/jstest/jst-lower.rs
@@ -177,7 +177,7 @@ impl TestsAccumulator {
     self.tera.render_to("js", &context, &mut self.script)?;
 
     let already = self.tests.tests.insert(name.to_owned(), test);
-    assert!(already.is_none(), "{:?}", &name);
+    assert!(already.is_none(), "duplicate test {:?}", &name);
   }
 }