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Promote marks

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Aleksey Kladov 2021-01-22 17:58:00 +03:00
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docs/dev/style.md
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@ -142,6 +142,17 @@ There are many benefits to this:
Formatting ensures that you can use your editor's "number of selected characters" feature to correlate offsets with test's source code. Formatting ensures that you can use your editor's "number of selected characters" feature to correlate offsets with test's source code.
## Marked Tests
Use
[`mark::hit! / mark::check!`](https://github.com/rust-analyzer/rust-analyzer/blob/71fe719dd5247ed8615641d9303d7ca1aa201c2f/crates/test_utils/src/mark.rs)
when testing specific conditions.
Do not place several marks into a single test or condition.
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.
## Function Preconditions ## Function Preconditions
Express function preconditions in types and force the caller to provide them (rather than checking in callee): Express function preconditions in types and force the caller to provide them (rather than checking in callee):
@ -380,13 +391,12 @@ Compile time **does not** obey this rule -- all code has to be compiled.
## Appropriate String Types ## Appropriate String Types
When interfacing with OS APIs, use `OsString`, even if the original source of When interfacing with OS APIs, use `OsString`, even if the original source of data is utf-8 encoded.
data is utf-8 encoded. **Rationale:** cleanly delineates the boundary when the **Rationale:** cleanly delineates the boundary when the data goes into the OS-land.
data goes into the OS-land.
Use `AbsPathBuf` and `AbsPath` over `std::Path`. **Rationale:** rust-analyzer is Use `AbsPathBuf` and `AbsPath` over `std::Path`.
a long-lived process which handles several projects at the same time. It is **Rationale:** rust-analyzer is a long-lived process which handles several projects at the same time.
important not to leak cwd by accident. It is important not to leak cwd by accident.
# Premature Pessimization # Premature Pessimization