Files
rust/tests/ui
bors 1dea922ea6 Auto merge of #124015 - GuillaumeGomez:rollup-s46ksxa, r=GuillaumeGomez
Rollup of 14 pull requests

Successful merges:

 - #120781 (Correct usage note on OpenOptions::append())
 - #121694 (sess: stabilize `-Zrelro-level` as `-Crelro-level`)
 - #122521 (doc(bootstrap): add top-level doc-comment to utils/tarball.rs)
 - #123491 (Fix ICE in `eval_body_using_ecx`)
 - #123574 (rustdoc: rename `issue-\d+.rs` tests to have meaningful names (part 6))
 - #123687 (Update ar_archive_writer to 0.2.0)
 - #123721 (Various visionOS fixes)
 - #123797 (Better graphviz output for SCCs and NLL constraints)
 - #123990 (Make `suggest_deref_closure_return` more idiomatic/easier to understand)
 - #123995 (Make `thir_tree` and `thir_flat` into hooks)
 - #123998 (Opaque types have no namespace)
 - #124001 (Fix docs for unstable_features lint.)
 - #124006 (Move size assertions for `mir::syntax` types into the same file)
 - #124011 (rustdoc: update the module-level docs of `rustdoc::clean`)

r? `@ghost`
`@rustbot` modify labels: rollup
2024-04-16 13:26:03 +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>.