From 456bc79829b6d38c42f3a0fa265cd61282518b09 Mon Sep 17 00:00:00 2001
From: "Kamat, Trivikram" <16024985+trivikr@users.noreply.github.com>
Date: Sun, 21 Jun 2026 20:55:48 -0700
Subject: [PATCH] test: mark hr-time WPT flaky on macos15-x64

The basic.any.js test compares elapsed performance.now() with elapsed
Date.now(). On macos15-x64 CI, Date.now() can shift relative to the
monotonic clock and exceed the test's 30 ms tolerance.

Convert the status file to .cjs so the flaky expectation is scoped to
macOS 15 on x64.

Signed-off-by: Kamat, Trivikram <16024985+trivikr@users.noreply.github.com>
---
 test/wpt/status/hr-time.cjs  | 37 ++++++++++++++++++++++++++++++++++++
 test/wpt/status/hr-time.json | 15 ---------------
 2 files changed, 37 insertions(+), 15 deletions(-)
 create mode 100644 test/wpt/status/hr-time.cjs
 delete mode 100644 test/wpt/status/hr-time.json

diff --git a/test/wpt/status/hr-time.cjs b/test/wpt/status/hr-time.cjs
new file mode 100644
index 00000000000000..c426eeeb8e9274
--- /dev/null
+++ b/test/wpt/status/hr-time.cjs
@@ -0,0 +1,37 @@
+'use strict';
+
+const os = require('node:os');
+
+const isMacOS15X64 =
+  os.platform() === 'darwin' &&
+  process.arch === 'x64' &&
+  os.release().startsWith('24.');
+
+module.exports = {
+  ...(isMacOS15X64 ? {
+    'basic.any.js': {
+      fail: {
+        note: 'Flaky on macos15-x64: Date.now() can shift relative to monotonic performance.now()',
+        flaky: [
+          'High resolution time has approximately the right relative magnitude',
+        ],
+      },
+    },
+  } : {}),
+
+  'idlharness.any.js': {
+    fail: {
+      expected: [
+        'Window interface: attribute performance',
+      ],
+    },
+  },
+
+  'idlharness-shadowrealm.window.js': {
+    skip: 'ShadowRealm support is not enabled',
+  },
+
+  'window-worker-timeOrigin.window.js': {
+    skip: 'depends on URL.createObjectURL(blob)',
+  },
+};
diff --git a/test/wpt/status/hr-time.json b/test/wpt/status/hr-time.json
deleted file mode 100644
index b787bcb7862cb6..00000000000000
--- a/test/wpt/status/hr-time.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-  "idlharness.any.js": {
-    "fail": {
-      "expected": [
-        "Window interface: attribute performance"
-      ]
-    }
-  },
-  "idlharness-shadowrealm.window.js": {
-    "skip": "ShadowRealm support is not enabled"
-  },
-  "window-worker-timeOrigin.window.js": {
-    "skip": "depends on URL.createObjectURL(blob)"
-  }
-}