Rollup merge of #80053 - gilescope:include-ignore, r=m-ou-se

stabilise `cargo test -- --include-ignored`

stabilise `cargo test -- --include-ignored`

On stable there's no way to run ignored tests as well as the normal tests.

An example use case where stabilising this would help:
Exercism has some initial tests and then some additional ignored tests that people run currently with --ignore but currently they can't run all the tests in one go without being on nightly. It would be a little more ergonomic if this flag was stablilised.

( Fixes  #65770 )

I built with ./x.py build -i library/test - but as libtest is a dylib is there an easy way to invoke it manually to check it's working as expected? (I've updated the automated tests.)

library/test/src/cli.rs

@@ -230,9 +230,9 @@ fn parse_opts_impl(matches: getopts::Matches) -> OptRes {
     // Unstable flags
     let force_run_in_process = unstable_optflag!(matches, allow_unstable, "force-run-in-process");
     let exclude_should_panic = unstable_optflag!(matches, allow_unstable, "exclude-should-panic");
-    let include_ignored = unstable_optflag!(matches, allow_unstable, "include-ignored");
     let time_options = get_time_options(&matches, allow_unstable)?;
 
+    let include_ignored = matches.opt_present("include-ignored");
     let quiet = matches.opt_present("quiet");
     let exact = matches.opt_present("exact");
     let list = matches.opt_present("list");

library/test/src/tests.rs

@@ -391,12 +391,7 @@ fn parse_show_output_flag() {
 
 #[test]
 fn parse_include_ignored_flag() {
-    let args = vec![
-        "progname".to_string(),
-        "filter".to_string(),
-        "-Zunstable-options".to_string(),
-        "--include-ignored".to_string(),
-    ];
+    let args = vec!["progname".to_string(), "filter".to_string(), "--include-ignored".to_string()];
     let opts = parse_opts(&args).unwrap().unwrap();
     assert_eq!(opts.run_ignored, RunIgnored::Yes);
 }