Files
rust/tests/ui
bors f005c7437d Auto merge of #133561 - GuillaumeGomez:rollup-g4upmv4, r=GuillaumeGomez
Rollup of 12 pull requests

Successful merges:

 - #129409 (Expand std::os::unix::fs::chown() doc with a warning)
 - #133320 (Add release notes for Rust 1.83.0)
 - #133368 (Delay a bug when encountering an impl with unconstrained generics in `codegen_select`)
 - #133428 (Actually use placeholder regions for trait method late bound regions in `collect_return_position_impl_trait_in_trait_tys`)
 - #133512 (Add `as_array` and `as_mut_array` conversion methods to slices.)
 - #133519 (Check `xform_ret_ty` for WF in the new solver to improve method winnowing)
 - #133520 (Structurally resolve before applying projection in borrowck)
 - #133534 (extend group-forbid-always-trumps-cli test)
 - #133537 ([rustdoc] Fix new clippy lints)
 - #133543 ([AIX] create shim for lgammaf_r)
 - #133547 (rustc_span: Replace a `HashMap<_, ()>` with `HashSet`)
 - #133550 (print generated doc paths)

r? `@ghost`
`@rustbot` modify labels: rollup
2024-11-28 03:36:03 +00:00
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UI Tests

This folder contains rustc's UI tests.

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-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

// ignore-test

but in ui_test style, the header would be written as

//@ 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>.