libtest: add glob support to test name filters

Tests can currently only be filtered by substring or exact match. This
makes it difficult to have finer-grained control over which tests to
run, such as running only tests with a given suffix in a module, all
tests without a given suffix, etc.

This PR adds a `--glob` flag to make test name filters use glob patterns
instead of string substring matching. This allows commands such as:

    --glob mymod::*_fast

or

    --glob --skip *_slow

The `--glob` flag can normally be omitted, as it is inferred whenever a
pattern includes one of the glob special characters (`*`, `?`, or `[`).
These characters cannot appear in ordinary test names, so this should
not cause unexpected results.

If both `--exact` *and* `--glob` are given, `--exact` takes precedence.

Fixes #46408.

src/libtest/Cargo.toml

@@ -10,4 +10,5 @@ crate-type = ["dylib", "rlib"]
 
 [dependencies]
 getopts = "0.2"
+glob = "0.2"
 term = { path = "../libterm" }

src/libtest/lib.rs

@@ -40,6 +40,7 @@
 #![feature(panic_unwind)]
 #![feature(staged_api)]
 
+extern crate glob;
 extern crate getopts;
 extern crate term;
 #[cfg(unix)]
@@ -339,6 +340,7 @@ pub struct TestOpts {
     pub list: bool,
     pub filter: Option<String>,
     pub filter_exact: bool,
+    pub filter_glob: bool,
     pub run_ignored: bool,
     pub run_tests: bool,
     pub bench_benchmarks: bool,
@@ -358,6 +360,7 @@ impl TestOpts {
             list: false,
             filter: None,
             filter_exact: false,
+            filter_glob: false,
             run_ignored: false,
             run_tests: false,
             bench_benchmarks: false,
@@ -392,6 +395,7 @@ fn optgroups() -> getopts::Options {
                                be used multiple times)","FILTER")
         .optflag("q", "quiet", "Display one character per test instead of one line")
         .optflag("", "exact", "Exactly match filters rather than by substring")
+        .optflag("g", "glob", "Use glob patterns for matching test names")
         .optopt("", "color", "Configure coloring of output:
             auto   = colorize if stdout is a tty and tests are run on serially (default);
             always = always colorize output;
@@ -445,7 +449,11 @@ pub fn parse_opts(args: &[String]) -> Option<OptRes> {
         return None;
     }
 
+    let mut glob = matches.opt_present("glob");
     let filter = if !matches.free.is_empty() {
+        if matches.free[0].chars().any(|c| ['*', '?', '['].contains(&c)) {
+            glob = true;
+        }
         Some(matches.free[0].clone())
     } else {
         None
@@ -500,6 +508,7 @@ pub fn parse_opts(args: &[String]) -> Option<OptRes> {
         list,
         filter,
         filter_exact: exact,
+        filter_glob: glob,
         run_ignored,
         run_tests,
         bench_benchmarks,
@@ -1324,9 +1333,17 @@ pub fn filter_tests(opts: &TestOpts, tests: Vec<TestDescAndFn>) -> Vec<TestDescA
     filtered = match opts.filter {
         None => filtered,
         Some(ref filter) => {
+            let glob = if opts.filter_glob && !opts.filter_exact {
+                glob::Pattern::new(filter).ok()
+            } else {
+                None
+            };
+
             filtered.into_iter()
                     .filter(|test| {
-                        if opts.filter_exact {
+                        if let Some(ref glob) = glob {
+                            glob.matches(&test.desc.name.as_slice())
+                        } else if opts.filter_exact {
                             test.desc.name.as_slice() == &filter[..]
                         } else {
                             test.desc.name.as_slice().contains(&filter[..])
@@ -1339,6 +1356,12 @@ pub fn filter_tests(opts: &TestOpts, tests: Vec<TestDescAndFn>) -> Vec<TestDescA
     // Skip tests that match any of the skip filters
     filtered = filtered.into_iter()
         .filter(|t| !opts.skip.iter().any(|sf| {
+                if opts.filter_glob && !opts.filter_exact {
+                    if let Ok(glob) = glob::Pattern::new(sf) {
+                        return glob.matches(&t.desc.name.as_slice());
+                    }
+                }
+
                 if opts.filter_exact {
                     t.desc.name.as_slice() == &sf[..]
                 } else {
@@ -1920,7 +1943,7 @@ mod tests {
     }
 
     #[test]
-    pub fn exact_filter_match() {
+    pub fn filter_type_match() {
         fn tests() -> Vec<TestDescAndFn> {
             vec!["base",
                  "base::test",
@@ -1989,6 +2012,36 @@ mod tests {
                 ..TestOpts::new()
             }, tests());
         assert_eq!(exact.len(), 1);
+
+        let exact = filter_tests(&TestOpts {
+                filter: Some("b".into()),
+                filter_glob: true, ..TestOpts::new()
+            }, tests());
+        assert_eq!(exact.len(), 0);
+
+        let exact = filter_tests(&TestOpts {
+                filter: Some("base".into()),
+                filter_glob: true, ..TestOpts::new()
+            }, tests());
+        assert_eq!(exact.len(), 1);
+
+        let exact = filter_tests(&TestOpts {
+                filter: Some("base*".into()),
+                filter_glob: true, ..TestOpts::new()
+            }, tests());
+        assert_eq!(exact.len(), 4);
+
+        let exact = filter_tests(&TestOpts {
+                filter: Some("base::test?".into()),
+                filter_glob: true, ..TestOpts::new()
+            }, tests());
+        assert_eq!(exact.len(), 2);
+
+        let exact = filter_tests(&TestOpts {
+                filter: Some("base::test[2-9]".into()),
+                filter_glob: true, ..TestOpts::new()
+            }, tests());
+        assert_eq!(exact.len(), 1);
     }
 
     #[test]

src/tools/compiletest/src/common.rs

@@ -146,6 +146,9 @@ pub struct Config {
     /// Exactly match the filter, rather than a substring
     pub filter_exact: bool,
 
+    /// Match the test name using a glob
+    pub filter_glob: bool,
+
     /// Write out a parseable log of tests that were run
     pub logfile: Option<PathBuf>,
 

src/tools/compiletest/src/main.rs

@@ -83,6 +83,7 @@ pub fn parse_config(args: Vec<String> ) -> Config {
                  run-pass-valgrind|pretty|debug-info|incremental|mir-opt)")
         .optflag("", "ignored", "run tests marked as ignored")
         .optflag("", "exact", "filters match exactly")
+        .optflag("", "glob", "match test names using a glob")
         .optopt("", "runtool", "supervisor program to run tests under \
                                 (eg. emulator, valgrind)", "PROGRAM")
         .optopt("", "host-rustcflags", "flags to pass to rustc for host", "FLAGS")
@@ -174,6 +175,7 @@ pub fn parse_config(args: Vec<String> ) -> Config {
         run_ignored: matches.opt_present("ignored"),
         filter: matches.free.first().cloned(),
         filter_exact: matches.opt_present("exact"),
+        filter_glob: matches.opt_present("glob"),
         logfile: matches.opt_str("logfile").map(|s| PathBuf::from(&s)),
         runtool: matches.opt_str("runtool"),
         host_rustcflags: matches.opt_str("host-rustcflags"),
@@ -227,6 +229,7 @@ pub fn log_config(config: &Config) {
                                    .as_ref()
                                    .map(|re| re.to_owned()))));
     logv(c, format!("filter_exact: {}", config.filter_exact));
+    logv(c, format!("filter_glob: {}", config.filter_glob));
     logv(c, format!("runtool: {}", opt_str(&config.runtool)));
     logv(c, format!("host-rustcflags: {}",
                     opt_str(&config.host_rustcflags)));
@@ -339,6 +342,7 @@ pub fn test_opts(config: &Config) -> test::TestOpts {
     test::TestOpts {
         filter: config.filter.clone(),
         filter_exact: config.filter_exact,
+        filter_glob: config.filter_glob
         run_ignored: config.run_ignored,
         quiet: config.quiet,
         logfile: config.logfile.clone(),