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rust/ui_test
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Ralf Jung 86e53f41b0 print reason for ignoring
2022-05-30 10:33:48 +02:00
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src print reason for ignoring 2022-05-30 10:33:48 +02:00
Cargo.lock Commit our ui test crate's cargo lockfile 2022-05-27 14:24:38 +00:00
Cargo.toml Add a custom ui test runner and move all tests to it 2022-05-25 13:31:26 +00:00
README.md Add a custom ui test runner and move all tests to it 2022-05-25 13:31:26 +00:00

README.md

A smaller version of compiletest-rs

Supported magic comment annotations

Note that the space after //, when it is present, is not optional -- it must be exactly one.

  • // ignore-XXX avoids running the test on targets whose triple contains XXX
    • XXX can also be one of 64bit, 32bit or 16bit
  • // only-XXX avoids running the test on targets whose triple does not contain XXX
    • XXX can also be one of 64bit, 32bit or 16bit
  • // stderr-per-bitwidth produces one stderr file per bitwidth, as they may differ significantly sometimes
  • // error-pattern: XXX make sure the stderr output contains XXX
  • //~ ERROR: XXX make sure the stderr output contains XXX for an error in the line where this comment is written
    • NOTE: it is not checked at present that it is actually in the line where the error occurred, or that it is truly an ERROR/WARNING/HELP/NOTE, but you should treat it as such until that becomes true.
    • Also supports HELP or WARN for different kind of message
    • if the all caps note is left out, any message is matched
    • This checks the output before normalization, so you can check things that get normalized away, but need to be careful not to accidentally have a pattern that differs between platforms.
  • // revisions: XXX YYY runs the test once for each space separated name in the list
    • emits one stderr file per revision
    • //~ comments can be restricted to specific revisions by adding the revision name before the ~ in square brackets: //[XXX]~
  • // compile-flags: XXX appends XXX to the command line arguments passed to the rustc driver
  • // rustc-env: XXX=YYY sets the env var XXX to YYY for the rustc driver execution.
    • for Miri these env vars are used during compilation via rustc and during the emulation of the program
  • // normalize-stderr-test: "REGEX" -> "REPLACEMENT" replaces all matches of REGEX in the stderr with REPLACEMENT. The replacement may specify $1 and similar backreferences to paste captures.

Significant differences to compiletest-rs

  • ignore-* and only-* opereate solely on the triple, instead of supporting things like macos
  • only //~ comments can be individualized per revision