Merge #8499

8499: internal: don't use `#[should_panic]` for tests r=matklad a=matklad

bors r+
🤖

Co-authored-by: Aleksey Kladov <[email protected]>

1 files changed, 10 insertions, 0 deletions

diff --git a/docs/dev/style.md b/docs/dev/style.md
index 468dedff2..7c47c26b2 100644
--- a/docs/dev/style.md
+++ b/docs/dev/style.md
@@ -152,6 +152,16 @@ Do not reuse marks between several tests.
 
 **Rationale:** marks provide an easy way to find the canonical test for each bit of code.
 This makes it much easier to understand.
+More than one mark per test / code branch doesn't add significantly to understanding.
+
+## `#[should_panic]`
+
+Do not use `#[should_panic]` tests.
+Instead, explicitly check for `None`, `Err`, etc.
+
+**Rationale:**a `#[should_panic]` is a tool for library authors, to makes sure that API does not fail silently, when misused.
+`rust-analyzer` is not a library, we don't need to test for API misuse, and we have to handle any user input without panics.
+Panic messages in the logs from the `#[should_panic]` tests are confusing.
 
 ## Function Preconditions