mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-22 23:04:33 +00:00
36 lines
1.1 KiB
Markdown
36 lines
1.1 KiB
Markdown
# UI Tests
|
|
|
|
This folder contains `rustc`'s
|
|
[UI tests](https://rustc-dev-guide.rust-lang.org/tests/ui.html).
|
|
|
|
## Test Directives (Headers)
|
|
|
|
Typically, a UI test will have some test directives / headers which are
|
|
special comments that tell compiletest how to build and intepret a test.
|
|
|
|
As part of an on-going effort to rewrite compiletest
|
|
(see <https://github.com/rust-lang/compiler-team/issues/536>), a major
|
|
change proposal to change legacy compiletest-style headers `// <directive>`
|
|
to [`ui_test`](https://github.com/oli-obk/ui_test)-style headers
|
|
`//@ <directive>` was accepted (see
|
|
<https://github.com/rust-lang/compiler-team/issues/512>.
|
|
|
|
An example directive is `ignore-test`. In legacy compiletest style, the header
|
|
would be written as
|
|
|
|
```rs
|
|
// ignore-test
|
|
```
|
|
|
|
but in `ui_test` style, the header would be written as
|
|
|
|
```rs
|
|
//@ ignore-test
|
|
```
|
|
|
|
compiletest is changed to accept only `//@` directives for UI tests
|
|
(currently), and will reject and report an error if it encounters any
|
|
comments `// <content>` that may be parsed as an legacy compiletest-style
|
|
test header. To fix this, you should migrate to the `ui_test`-style header
|
|
`//@ <content>`.
|