Files
rust/tests/ui
bors b45401283f Auto merge of #127296 - matthiaskrgr:rollup-1t1isa7, r=matthiaskrgr
Rollup of 6 pull requests

Successful merges:

 - #127092 (Change return-type-notation to use `(..)`)
 - #127184 (More refactorings to rustc_interface)
 - #127190 (Update LLVM submodule)
 - #127253 (Fix incorrect suggestion for extra argument with a type error)
 - #127280 (Disable rmake test rustdoc-io-error on riscv64gc-gnu)
 - #127294 (Less magic number for corountine)

r? `@ghost`
`@rustbot` modify labels: rollup
2024-07-03 23:25:24 +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>.