SYNCHRONOUS_DML in a test context - Integration test

[jongpie]

Discussed in #454

^{Originally posted by JeroenSfdc February 22, 2023}
If I'd like to do an integration test with SYNCHRONOUS_DML it fails (where it succeeds with EVENT_BUS).
I tried to get my head around this... This is using the managed package v4.8 v4.9. @jongpie

    @IsTest
    static void testNebula_SyncDML() {
        Nebula.Logger.error('Some random error');

        Test.startTest();
        Nebula.Logger.saveLog(Nebula.Logger.SaveMethod.SYNCHRONOUS_DML);
        Test.stopTest();

        Assert.areEqual(1, [SELECT Id FROM Nebula__Log__c].size());
        Assert.areEqual(1, [SELECT Id FROM Nebula__LogEntry__c].size());
    }