Allow to run a specific rustdoc-js* test

src/bootstrap/test.rs

@@ -763,7 +763,7 @@ impl Step for RustdocJSStd {
     const ONLY_HOSTS: bool = true;
 
     fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
-        run.path("src/test/rustdoc-js-std")
+        run.suite_path("src/test/rustdoc-js-std")
     }
 
     fn make_run(run: RunConfig<'_>) {
@@ -783,6 +783,17 @@ impl Step for RustdocJSStd {
                 .arg(builder.doc_out(self.target))
                 .arg("--test-folder")
                 .arg(builder.src.join("src/test/rustdoc-js-std"));
+            for path in &builder.paths {
+                if let Some(p) =
+                    util::is_valid_test_suite_arg(path, "src/test/rustdoc-js-std", builder)
+                {
+                    if !p.ends_with(".js") {
+                        eprintln!("A non-js file was given: `{}`", path.display());
+                        panic!("Cannot run rustdoc-js-std tests");
+                    }
+                    command.arg("--test-file").arg(path);
+                }
+            }
             builder.ensure(crate::doc::Std { target: self.target, stage: builder.top_stage });
             builder.run(&mut command);
         } else {
@@ -803,7 +814,7 @@ impl Step for RustdocJSNotStd {
     const ONLY_HOSTS: bool = true;
 
     fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
-        run.path("src/test/rustdoc-js")
+        run.suite_path("src/test/rustdoc-js")
     }
 
     fn make_run(run: RunConfig<'_>) {
@@ -938,8 +949,12 @@ impl Step for RustdocGUI {
             .arg("--tests-folder")
             .arg(builder.build.src.join("src/test/rustdoc-gui"));
         for path in &builder.paths {
+            if let Some(p) = util::is_valid_test_suite_arg(path, "src/test/rustdoc-gui", builder) {
+                if !p.ends_with(".goml") {
+                    eprintln!("A non-goml file was given: `{}`", path.display());
+                    panic!("Cannot run rustdoc-gui tests");
+                }
                 if let Some(name) = path.file_name().and_then(|f| f.to_str()) {
-                if name.ends_with(".goml") {
                     command.arg("--file").arg(name);
                 }
             }
@@ -1416,35 +1431,7 @@ note: if you're sure you want to do this, please open an issue as to why. In the
         // Get test-args by striping suite path
         let mut test_args: Vec<&str> = paths
             .iter()
-            .map(|p| match p.strip_prefix(".") {
+            .filter_map(|p| util::is_valid_test_suite_arg(p, suite_path, builder))
-                Ok(path) => path,
-                Err(_) => p,
-            })
-            .filter(|p| p.starts_with(suite_path))
-            .filter(|p| {
-                let exists = p.is_dir() || p.is_file();
-                if !exists {
-                    if let Some(p) = p.to_str() {
-                        builder.info(&format!(
-                            "Warning: Skipping \"{}\": not a regular file or directory",
-                            p
-                        ));
-                    }
-                }
-                exists
-            })
-            .filter_map(|p| {
-                // Since test suite paths are themselves directories, if we don't
-                // specify a directory or file, we'll get an empty string here
-                // (the result of the test suite directory without its suite prefix).
-                // Therefore, we need to filter these out, as only the first --test-args
-                // flag is respected, so providing an empty --test-args conflicts with
-                // any following it.
-                match p.strip_prefix(suite_path).ok().and_then(|p| p.to_str()) {
-                    Some(s) if !s.is_empty() => Some(s),
-                    _ => None,
-                }
-            })
             .collect();
 
         test_args.append(&mut builder.config.cmd.test_args());

src/bootstrap/util.rs

@@ -310,3 +310,35 @@ pub fn use_host_linker(target: TargetSelection) -> bool {
         || target.contains("fuchsia")
         || target.contains("bpf"))
 }
+
+pub fn is_valid_test_suite_arg<'a, P: AsRef<Path>>(
+    path: &'a Path,
+    suite_path: P,
+    builder: &Builder<'_>,
+) -> Option<&'a str> {
+    let suite_path = suite_path.as_ref();
+    let path = match path.strip_prefix(".") {
+        Ok(p) => p,
+        Err(_) => path,
+    };
+    if !path.starts_with(suite_path) {
+        return None;
+    }
+    let exists = path.is_dir() || path.is_file();
+    if !exists {
+        if let Some(p) = path.to_str() {
+            builder.info(&format!("Warning: Skipping \"{}\": not a regular file or directory", p));
+        }
+        return None;
+    }
+    // Since test suite paths are themselves directories, if we don't
+    // specify a directory or file, we'll get an empty string here
+    // (the result of the test suite directory without its suite prefix).
+    // Therefore, we need to filter these out, as only the first --test-args
+    // flag is respected, so providing an empty --test-args conflicts with
+    // any following it.
+    match path.strip_prefix(suite_path).ok().and_then(|p| p.to_str()) {
+        Some(s) if !s.is_empty() => Some(s),
+        _ => None,
+    }
+}

src/tools/rustdoc-js/tester.js

@@ -401,7 +401,8 @@ function showHelp() {
     console.log("  --doc-folder [PATH]        : location of the generated doc folder");
     console.log("  --help                     : show this message then quit");
     console.log("  --crate-name [STRING]      : crate name to be used");
-    console.log("  --test-file [PATH]         : location of the JS test file");
+    console.log("  --test-file [PATHs]        : location of the JS test files (can be called " +
+                "multiple times)");
     console.log("  --test-folder [PATH]       : location of the JS tests folder");
     console.log("  --resource-suffix [STRING] : suffix to refer to the correct files");
 }
@@ -412,7 +413,7 @@ function parseOptions(args) {
         "resource_suffix": "",
         "doc_folder": "",
         "test_folder": "",
-        "test_file": "",
+        "test_file": [],
     };
     var correspondences = {
         "--resource-suffix": "resource_suffix",
@@ -429,7 +430,11 @@ function parseOptions(args) {
                 console.log("Missing argument after `" + args[i - 1] + "` option.");
                 return null;
             }
+            if (args[i - 1] !== "--test-file") {
                 opts[correspondences[args[i - 1]]] = args[i];
+            } else {
+                opts[correspondences[args[i - 1]]].push(args[i]);
+            }
         } else if (args[i] === "--help") {
             showHelp();
             process.exit(0);
@@ -471,9 +476,10 @@ function main(argv) {
     var errors = 0;
 
     if (opts["test_file"].length !== 0) {
-        errors += checkFile(opts["test_file"], opts, loaded, index);
+        opts["test_file"].forEach(function(file) {
-    }
+            errors += checkFile(file, opts, loaded, index);
-    if (opts["test_folder"].length !== 0) {
+        });
+    } else if (opts["test_folder"].length !== 0) {
         fs.readdirSync(opts["test_folder"]).forEach(function(file) {
             if (!file.endsWith(".js")) {
                 return;