Nextest

src/config.rs

@@ -10,7 +10,7 @@ use std::{
 };
 
 mod args;
-pub use args::Args;
+pub use args::{Args, Format};
 
 #[derive(Debug, Clone)]
 /// Central datastructure containing all information to run the tests.
@@ -53,6 +53,12 @@ pub struct Config {
     pub filter_files: Vec<String>,
     /// Override the number of threads to use.
     pub threads: Option<NonZeroUsize>,
+    /// Nextest emulation: only list the test itself, not its components.
+    pub list: bool,
+    /// Only run the tests that are ignored.
+    pub run_only_ignored: bool,
+    /// Filters must match exactly instead of just checking for substrings.
+    pub filter_exact: bool,
 }
 
 impl Config {
@@ -94,6 +100,9 @@ impl Config {
             skip_files: Vec::new(),
             filter_files: Vec::new(),
             threads: None,
+            list: false,
+            run_only_ignored: false,
+            filter_exact: false,
         }
     }
 
@@ -119,9 +128,12 @@ impl Config {
     pub fn with_args(&mut self, args: &Args, default_bless: bool) {
         let Args {
             ref filters,
-            quiet: _,
             check,
             bless,
+            list,
+            exact,
+            ignored,
+            format: _,
             threads,
             ref skip,
         } = *args;
@@ -130,6 +142,10 @@ impl Config {
 
         self.filter_files.extend_from_slice(filters);
         self.skip_files.extend_from_slice(skip);
+        self.run_only_ignored = ignored;
+        self.filter_exact = exact;
+
+        self.list = list;
 
         let bless = match (bless, check) {
             (_, true) => false,

src/config/args.rs

@@ -11,9 +11,6 @@ pub struct Args {
     /// Filters that will be used to match on individual tests
     pub filters: Vec<String>,
 
-    /// Whether to minimize output given to the user.
-    pub quiet: bool,
-
     /// Whether to error on mismatches between `.stderr` files and actual
     /// output.
     pub check: bool,
@@ -22,13 +19,35 @@ pub struct Args {
     /// output.
     pub bless: bool,
 
+    /// Only run the test matching the filters exactly.
+    pub exact: bool,
+
+    /// Whether to only run ignored tests.
+    pub ignored: bool,
+
+    /// List the tests that can be run.
+    pub list: bool,
+
+    /// Choose an output format
+    pub format: Format,
+
     /// The number of threads to use
     pub threads: Option<NonZeroUsize>,
 
     /// Skip tests whose names contain any of these entries.
     pub skip: Vec<String>,
 }
 
+/// Possible choices for styling the output.
+#[derive(Debug, Copy, Clone, Default)]
+pub enum Format {
+    /// Print one line per test
+    #[default]
+    Pretty,
+    /// Remove test lines once the test finishes and show a progress bar.
+    Terse,
+}
+
 impl Args {
     /// Parse the program arguments.
     /// This is meant to be used if `ui_test` is used as a `harness=false` test, called from `cargo test`.
@@ -43,11 +62,25 @@ impl Args {
                 continue;
             }
             if arg == "--quiet" {
-                self.quiet = true;
+                self.format = Format::Terse;
             } else if arg == "--check" {
                 self.check = true;
             } else if arg == "--bless" {
                 self.bless = true;
+            } else if arg == "--list" {
+                self.list = true;
+            } else if arg == "--exact" {
+                self.exact = true;
+            } else if arg == "--ignored" {
+                self.ignored = true;
+            } else if arg == "--nocapture" {
+                // We ignore this flag for now.
+            } else if let Some(format) = parse_value("--format", &arg, &mut iter)? {
+                self.format = match &*format {
+                    "terse" => Format::Terse,
+                    "pretty" => Format::Pretty,
+                    _ => bail!("unsupported format `{format}`"),
+                };
             } else if let Some(skip) = parse_value("--skip", &arg, &mut iter)? {
                 self.skip.push(skip.into_owned());
             } else if arg == "--help" {

src/lib.rs

@@ -116,16 +116,15 @@ pub type Filter = Vec<(Match, &'static [u8])>;
 /// Will additionally process command line arguments.
 pub fn run_tests(mut config: Config) -> Result<()> {
     let args = Args::test()?;
-    if !args.quiet {
+    if let Format::Pretty = args.format {
         println!("Compiler: {}", config.program.display());
     }
 
     let name = config.root_dir.display().to_string();
 
-    let text = if args.quiet {
-        status_emitter::Text::quiet()
-    } else {
-        status_emitter::Text::verbose()
+    let text = match args.format {
+        Format::Terse => status_emitter::Text::quiet(),
+        Format::Pretty => status_emitter::Text::verbose(),
     };
     config.with_args(&args, true);
 
@@ -149,7 +148,15 @@ pub fn default_file_filter(path: &Path, config: &Config) -> bool {
 /// To only include rust files see [`default_file_filter`].
 pub fn default_any_file_filter(path: &Path, config: &Config) -> bool {
     let path = path.display().to_string();
-    let contains_path = |files: &[String]| files.iter().any(|f| path.contains(f));
+    let contains_path = |files: &[String]| {
+        files.iter().any(|f| {
+            if config.filter_exact {
+                *f == path
+            } else {
+                path.contains(f)
+            }
+        })
+    };
 
     if contains_path(&config.skip_files) {
         return false;
@@ -229,6 +236,23 @@ pub fn run_tests_generic(
     per_file_config: impl Fn(&mut Config, &Path, &[u8]) + Sync,
     status_emitter: impl StatusEmitter + Send,
 ) -> Result<()> {
+    // Nexttest emulation: we act as if we are one single test.
+    if configs.iter().any(|c| c.list) {
+        if configs.iter().any(|c| !c.run_only_ignored) {
+            println!("ui_test: test");
+        }
+        return Ok(());
+    }
+    for config in &mut configs {
+        if config.filter_exact
+            && config.filter_files.len() == 1
+            && config.filter_files[0] == "ui_test"
+        {
+            config.filter_exact = false;
+            config.filter_files.clear();
+        }
+    }
+
     for config in &mut configs {
         config.fill_host_and_target()?;
     }
@@ -1188,18 +1212,19 @@ impl dyn TestStatus {
             .flat_map(|r| r.ignore.iter())
             .any(|c| test_condition(c, config))
         {
-            return false;
+            return config.run_only_ignored;
         }
         if comments
             .for_revision(revision)
             .any(|r| r.needs_asm_support && !config.has_asm_support())
         {
-            return false;
+            return config.run_only_ignored;
         }
         comments
             .for_revision(revision)
             .flat_map(|r| r.only.iter())
             .all(|c| test_condition(c, config))
+            ^ config.run_only_ignored
     }
 }
 

src/status_emitter.rs

@@ -13,7 +13,7 @@ use crate::{
     github_actions,
     parser::Pattern,
     rustc_stderr::{Message, Span},
-    Error, Errored, Errors, TestOk, TestResult,
+    Error, Errored, Errors, Format, TestOk, TestResult,
 };
 use std::{
     collections::HashMap,
@@ -184,6 +184,15 @@ impl Text {
     }
 }
 
+impl From<Format> for Text {
+    fn from(format: Format) -> Self {
+        match format {
+            Format::Terse => Text::quiet(),
+            Format::Pretty => Text::verbose(),
+        }
+    }
+}
+
 struct TextTest {
     text: Text,
     path: PathBuf,

tests/integration.rs

@@ -70,11 +70,7 @@ fn main() -> Result<()> {
     config.filter("program not found", "No such file or directory");
     config.filter(" \\(os error [0-9]+\\)", "");
 
-    let text = if args.quiet {
-        ui_test::status_emitter::Text::quiet()
-    } else {
-        ui_test::status_emitter::Text::verbose()
-    };
+    let text = ui_test::status_emitter::Text::from(args.format);
 
     run_tests_generic(
         vec![