Flaky test: Com2Interop.COM2FontConverterTests.COM2FontConverter_ConvertManagedToNative

[runfoapp]

Runfo Tracking Issue: Flaky test: Com2Interop.COM2FontConverterTests.COM2FontConverter_ConvertManagedToNative

Build	Definition	Kind	Run Name

Build Result Summary

Day Hit Count	Week Hit Count	Month Hit Count
0	0	0

[dreddy-work]

Error message
Assert.Equal() Failure\r\nExpected: 20 (rounded from 20)\r\nActual: 2 (rounded from 1.5)

Stack trace
at System.Windows.Forms.Tests.ComponentModel.Com2Interop.COM2FontConverterTests.COM2FontConverter_ConvertManagedToNative() in /_/src/System.Windows.Forms/tests/UnitTests/System/Windows/Forms/ComponentModel/Com2Interop/COM2FontConverterTests.cs:line 93
at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
at System.Reflection.MethodInvoker.Invoke(Object obj, IntPtr* args, BindingFlags invokeAttr)

[lonitra]

When applying differences between the managed Font object and the native object, we use the the Font object's SizeInPoints, which seems to be dependent on DPI.

winforms/src/System.Windows.Forms/src/System/Windows/Forms/ComponentModel/COM2Interop/COM2FontConverter.cs

Lines 101 to 105 in 6277e50

	if (source.SizeInPoints != (float)target.Size)
	{
	target.Size = (CY)source.SizeInPoints;
	targetChanged = true;
	}

It may be possible running this test concurrently with others is causing issues. Perhaps this class should be in its own collection with parallelization disabled.

[dreddy-work]

closing against #8864