From 4286bb62c940b7c8886d4dac3e7582f4b208c9fc Mon Sep 17 00:00:00 2001
From: Michael Lumish <mlumish@google.com>
Date: Mon, 1 Dec 2025 12:32:59 -0500
Subject: [PATCH 1/2] Skip tests on Windows that behave differently

---
 packages/grpc-js/test/test-client.ts     |  6 ++++++
 packages/grpc-js/test/test-idle-timer.ts | 10 +++++++++-
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/packages/grpc-js/test/test-client.ts b/packages/grpc-js/test/test-client.ts
index bbb3f063f..0ac803edc 100644
--- a/packages/grpc-js/test/test-client.ts
+++ b/packages/grpc-js/test/test-client.ts
@@ -124,6 +124,12 @@ describe('Client with a nonexistent target domain', () => {
     client.close();
   });
   it('should fail multiple calls', function (done) {
+    if (process.platform === 'win32') {
+      // DNS has some weird behavior on Windows
+      this.skip();
+      // @ts-ignore: Unreachable code error
+      return;
+    }
     this.timeout(5000);
     // Regression test for https://github.com/grpc/grpc-node/issues/1411
     client.makeUnaryRequest(
diff --git a/packages/grpc-js/test/test-idle-timer.ts b/packages/grpc-js/test/test-idle-timer.ts
index ed6af2cf7..c60704e2d 100644
--- a/packages/grpc-js/test/test-idle-timer.ts
+++ b/packages/grpc-js/test/test-idle-timer.ts
@@ -132,7 +132,15 @@ describe('Channel idle timer', () => {
 describe('Channel idle timer with UDS', () => {
   let server: TestServer;
   let client: TestClient | null = null;
-  before(() => {
+  before(function() {
+    if (process.platform === 'win32') {
+      /* The Node API that creates a UDS on Linux actually creates a named
+       * pipe on Windows, and those have a different naming scheme than UDS
+       * so the test setup doesn't work on Windows. */
+      this.skip();
+      // @ts-ignore: Unreachable code error
+      return;
+    }
     server = new TestServer(false);
     return server.startUds();
   });

From 27296d3a5029c6e7852a19b505d1f15b22ef644f Mon Sep 17 00:00:00 2001
From: Michael Lumish <mlumish@google.com>
Date: Mon, 1 Dec 2025 13:34:12 -0500
Subject: [PATCH 2/2] Skip UDS test 'after' hook too

---
 packages/grpc-js/test/test-idle-timer.ts | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/packages/grpc-js/test/test-idle-timer.ts b/packages/grpc-js/test/test-idle-timer.ts
index c60704e2d..34381476b 100644
--- a/packages/grpc-js/test/test-idle-timer.ts
+++ b/packages/grpc-js/test/test-idle-timer.ts
@@ -150,7 +150,15 @@ describe('Channel idle timer with UDS', () => {
       client = null;
     }
   });
-  after(() => {
+  after(function () {
+    if (process.platform === 'win32') {
+      /* The Node API that creates a UDS on Linux actually creates a named
+       * pipe on Windows, and those have a different naming scheme than UDS
+       * so the test setup doesn't work on Windows. */
+      this.skip();
+      // @ts-ignore: Unreachable code error
+      return;
+    }
     server.shutdown();
   });
   it('Should be able to make a request after going idle', function (done) {