Add Process.stderrOutput() (#1828)

1 files changed, 11 insertions, 0 deletions

diff --git a/js/process_test.ts b/js/process_test.ts
index b442f0092..051841ffe 100644
--- a/js/process_test.ts
+++ b/js/process_test.ts
@@ -187,6 +187,17 @@ testPerm({ run: true }, async function runOutput() {
   p.close();
 });
 
+testPerm({ run: true }, async function runStderrOutput() {
+  const p = run({
+    args: ["python", "-c", "import sys; sys.stderr.write('error')"],
+    stderr: "piped"
+  });
+  const error = await p.stderrOutput();
+  const s = new TextDecoder().decode(error);
+  assertEquals(s, "error");
+  p.close();
+});
+
 testPerm({ run: true }, async function runEnv() {
   const p = run({
     args: [