refactor(link): bound every teardown and handler wait behind one helper [CI]

backend/fleet/tests/Fleet.Tests/BoundedTests.cs

@@ -0,0 +1,28 @@
+using Fleet.Core;
+
+namespace Fleet.Tests;
+
+public sealed class BoundedTests
+{
+    [Fact]
+    public async Task WaitAsync_ReturnsFalse_WhenTheWorkNeverFinishes()
+    {
+        var never = new TaskCompletionSource();
+        Assert.False(await Bounded.WaitAsync(never.Task, TimeSpan.FromMilliseconds(100), TimeProvider.System));
+    }
+
+    [Fact]
+    public async Task WaitAsync_ReturnsTrue_WhenTheWorkFinishes_OrFailsWithSessionNoise()
+    {
+        Assert.True(await Bounded.WaitAsync(Task.CompletedTask, TimeSpan.FromSeconds(5), TimeProvider.System));
+        Assert.True(await Bounded.WaitAsync(Task.FromException(new IOException("closed")), TimeSpan.FromSeconds(5), TimeProvider.System));
+        Assert.True(await Bounded.WaitAsync(Task.FromException(new ObjectDisposedException("x")), TimeSpan.FromSeconds(5), TimeProvider.System));
+        Assert.True(await Bounded.WaitAsync(Task.FromCanceled(new CancellationToken(true)), TimeSpan.FromSeconds(5), TimeProvider.System));
+    }
+
+    [Fact]
+    public async Task WaitAsync_DoesNotHideRealFailures()
+    {
+        await Assert.ThrowsAsync<FormatException>(() => Bounded.WaitAsync(Task.FromException(new FormatException()), TimeSpan.FromSeconds(5), TimeProvider.System));
+    }
+}