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[tests] Use NSTemporaryDirectory instead of Xamarin.Cache in FSEventStreamTest #25243

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Merged
rolfbjarne merged 1 commit into from
Apr 30, 2026
+21 −5
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[tests] Use NSTemporaryDirectory instead of Xamarin.Cache in FSEventStreamTest #25243

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26 changes: 21 additions & 5 deletions tests/monotouch-test/CoreServices/FSEventStreamTest.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,10 +5,12 @@
#if __MACOS__

using System.IO;
using System.Runtime.InteropServices;
using System.Threading;
using System.Threading.Tasks;

using CoreServices;
using Foundation;

namespace MonoTouchFixtures.CoreServices {
using static FSEventStreamCreateFlags;
Expand All @@ -17,16 +19,30 @@ namespace MonoTouchFixtures.CoreServices {
[TestFixture]
[Preserve (AllMembers = true)]
public sealed class FSEventStreamTest {
[DllImport ("/usr/lib/libSystem.dylib")]
static extern IntPtr realpath (string file_name, IntPtr resolved_name);

static string CreateTemporaryDirectory ()
{
var tmpDir = Path.Combine (NSFileManager.TemporaryDirectory, Path.GetRandomFileName ());
Directory.CreateDirectory (tmpDir);
// Resolve symlinks (e.g. /var -> /private/var) because FSEventStream reports resolved paths.
var resolvedPtr = realpath (tmpDir, IntPtr.Zero);
var resolved = Marshal.PtrToStringUTF8 (resolvedPtr)!;
Marshal.FreeHGlobal (resolvedPtr);
return resolved;
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}

[Test]
public void TestPathsBeingWatched ()
{
FSEventStreamCreateOptions createOptions = new () {
Flags = FileEvents | UseExtendedData,
PathsToWatch = new [] {
Xamarin.Cache.CreateTemporaryDirectory (),
Xamarin.Cache.CreateTemporaryDirectory (),
Xamarin.Cache.CreateTemporaryDirectory (),
Xamarin.Cache.CreateTemporaryDirectory ()
CreateTemporaryDirectory (),
CreateTemporaryDirectory (),
CreateTemporaryDirectory (),
CreateTemporaryDirectory ()
}
};

Expand Down Expand Up @@ -69,7 +85,7 @@ static void RunTest (FSEventStreamCreateFlags createFlags)
{
TestRuntime.IgnoreInCI ("This test fails randomly on the bots, potentially due to (randomly) high CPU usage.");
using var monitor = new TestFSMonitor (
Xamarin.Cache.CreateTemporaryDirectory (),
CreateTemporaryDirectory (),
createFlags,
maxFilesToCreate: 256);
try {
Expand Down
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