public void NaiveSingletonPatternTest()
{
//Arrange
PrinterNaive firstPrinterObject = null;
PrinterNaive secondPrinterObject = null;
PrinterNaive thirdPrinterObject = null;
//Act
Task task1 = Task.Factory.StartNew(() => {
firstPrinterObject = InitializePrinterNaiveObjectAndAddDocument("First", "First-Document");
});
Task task2 = Task.Factory.StartNew(() => {
secondPrinterObject = InitializePrinterNaiveObjectAndAddDocument("Second", "Second-Document");
});
Task task3 = Task.Factory.StartNew(() => {
thirdPrinterObject = InitializePrinterNaiveObjectAndAddDocument("Third", "Third-Document");
});
Task.WaitAll(task1, task2, task3);
//Assert
Assert.IsTrue(firstPrinterObject.Equals(secondPrinterObject));
Assert.IsTrue(firstPrinterObject.Equals(thirdPrinterObject));
Assert.IsTrue(thirdPrinterObject.Equals(secondPrinterObject));
}
public PrinterNaive InitializePrinterNaiveObjectAndAddDocument(string instanceName, string documentName)
{
var printerObject = PrinterNaive.GetPrinterInstance(instanceName);
printerObject.AddDocument(documentName);
printerObject.PrintDocument();
return(printerObject);
}