fix(test): --junit-path should handle when the dir doesn't exist (#21044)

Closes https://github.com/denoland/deno/issues/21022

cli/tests/integration/test_tests.rs

@@ -283,6 +283,23 @@ itest!(junit {
   output: "test/pass.junit.out",
 });
 
+#[test]
+fn junit_path() {
+  let context = TestContextBuilder::new().use_temp_cwd().build();
+  let temp_dir = context.temp_dir();
+  temp_dir.write("test.js", "Deno.test('does test', () => {});");
+  let output = context
+    .new_command()
+    .args("test --junit-path=sub_dir/output.xml test.js")
+    .run();
+  output.skip_output_check();
+  output.assert_exit_code(0);
+  temp_dir
+    .path()
+    .join("sub_dir/output.xml")
+    .assert_matches_text("<?xml [WILDCARD]");
+}
+
 itest!(clear_timeout {
   args: "test test/clear_timeout.ts",
   exit_code: 0,

cli/tools/test/reporters/junit.rs

@@ -1,5 +1,7 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 
+use std::path::PathBuf;
+
 use super::*;
 
 pub struct JunitTestReporter {
@@ -191,10 +193,8 @@ impl TestReporter for JunitTestReporter {
         .serialize(std::io::stdout())
         .with_context(|| "Failed to write JUnit report to stdout")?;
     } else {
-      let file =
-        std::fs::File::create(self.path.clone()).with_context(|| {
-          format!("Failed to open JUnit report file {}", self.path)
-        })?;
+      let file = crate::util::fs::create_file(&PathBuf::from(&self.path))
+        .context("Failed to open JUnit report file.")?;
       report.serialize(file).with_context(|| {
         format!("Failed to write JUnit report to {}", self.path)
       })?;

cli/util/fs.rs

@@ -49,13 +49,6 @@ pub fn atomic_write_file<T: AsRef<[u8]>>(
     Ok(())
   }
 
-  fn add_file_context(file_path: &Path, err: Error) -> Error {
-    Error::new(
-      err.kind(),
-      format!("{:#} (for '{}')", err, file_path.display()),
-    )
-  }
-
   fn inner(file_path: &Path, data: &[u8], mode: u32) -> std::io::Result<()> {
     let temp_file_path = {
       let rand: String = (0..4).fold(String::new(), |mut output, _| {
@@ -79,7 +72,7 @@ pub fn atomic_write_file<T: AsRef<[u8]>>(
               data,
               mode,
             )
-            .map_err(|err| add_file_context(file_path, err));
+            .map_err(|err| add_file_context_to_err(file_path, err));
           }
           Err(create_err) => {
             if !parent_dir_path.exists() {
@@ -95,7 +88,7 @@ pub fn atomic_write_file<T: AsRef<[u8]>>(
           }
         }
       }
-      return Err(add_file_context(file_path, write_err));
+      return Err(add_file_context_to_err(file_path, write_err));
     }
     Ok(())
   }
@@ -103,6 +96,44 @@ pub fn atomic_write_file<T: AsRef<[u8]>>(
   inner(file_path, data.as_ref(), mode)
 }
 
+/// Creates a std::fs::File handling if the parent does not exist.
+pub fn create_file(file_path: &Path) -> std::io::Result<std::fs::File> {
+  match std::fs::File::create(file_path) {
+    Ok(file) => Ok(file),
+    Err(err) => {
+      if err.kind() == ErrorKind::NotFound {
+        let parent_dir_path = file_path.parent().unwrap();
+        match std::fs::create_dir_all(parent_dir_path) {
+          Ok(()) => {
+            return std::fs::File::create(file_path)
+              .map_err(|err| add_file_context_to_err(file_path, err));
+          }
+          Err(create_err) => {
+            if !parent_dir_path.exists() {
+              return Err(Error::new(
+                create_err.kind(),
+                format!(
+                  "{:#} (for '{}')\nCheck the permission of the directory.",
+                  create_err,
+                  parent_dir_path.display()
+                ),
+              ));
+            }
+          }
+        }
+      }
+      Err(add_file_context_to_err(file_path, err))
+    }
+  }
+}
+
+fn add_file_context_to_err(file_path: &Path, err: Error) -> Error {
+  Error::new(
+    err.kind(),
+    format!("{:#} (for '{}')", err, file_path.display()),
+  )
+}
+
 pub fn write_file<T: AsRef<[u8]>>(
   filename: &Path,
   data: T,