I did some further test on test case 6 . I removed all pex assumptions regarding the dates. This time Pex had no problem finding the test cases necessary for a complete block coverage.
So the PUT states no assumptions regarding the dates;
[TestClass]
[PexClass(typeof(EmployeeServices))]
public partial class EmployeeServicesTest
{
[PexMethod()]
public void DeterminePensionContribution([PexAssumeUnderTest]EmployeeServices target, Employee aEmployee)
{
PexAssume.IsNotNull(aEmployee);
PexAssume.IsTrue(aEmployee.Salary > 1400 && aEmployee.Salary < 10000);
PexAssume.IsTrue(aEmployee.TypeContract == Contract.FullTime || aEmployee.TypeContract == Contract.PartTime);
PensionContribution result = target.DeterminePensionContribution(aEmployee);
PexValue.AddForValidation("BaseContribution", result.BaseContribution);
PexValue.AddForValidation("SupplementaryContribution", result.SupplementaryContribution);
if (aEmployee.Salary <= 3000)
Assert.IsTrue(result.BaseContribution == 80);
if (aEmployee.Salary > 3000)
Assert.IsTrue(result.BaseContribution == 135);
if (aEmployee.Salary <= 3000 && aEmployee.Age >= 45 && aEmployee.ServiceYears < 5)
Assert.IsTrue(result.SupplementaryContribution == 15);
if (aEmployee.Salary <= 3000 && aEmployee.Age < 45 && aEmployee.TypeContract == Contract.FullTime)
Assert.IsTrue(result.SupplementaryContribution == 15);
if (aEmployee.Salary <= 3000 && aEmployee.Age >= 45 && aEmployee.ServiceYears >= 5)
Assert.IsTrue(result.SupplementaryContribution == 25);
if (aEmployee.Salary > 3000 && aEmployee.Age < 45 && aEmployee.ServiceYears >= 5 && aEmployee.TypeContract == Contract.FullTime)
Assert.IsTrue(result.SupplementaryContribution == 25);
if (aEmployee.Salary > 3000 && aEmployee.Age < 45 && aEmployee.ServiceYears >= 5 && aEmployee.TypeContract == Contract.PartTime)
Assert.IsTrue(result.SupplementaryContribution == 20);
if (aEmployee.Salary > 3000 && aEmployee.Age >= 45 && aEmployee.ServiceYears >= 5)
Assert.IsTrue(result.SupplementaryContribution == 20);
if (aEmployee.Salary > 3000 && aEmployee.ServiceYears < 5)
Assert.IsTrue(result.SupplementaryContribution == 30);
}
}
When you run Pex this time it generated none less than 11 unit tests. The generated DateTime value are constructed with the Ticks argument, so it no easy to see the actual dateTime. Actually the first time I run this Pex generated a tick value with a value larger than 32 bit. When running the generated unit tests, an exception was thrown specifying thant the tick value should be between the DateTime.Minvalue.Ticks and DateTimeValue.Maxvalue.Ticks. It seemed to me that i generated a 64-bit value.
I haven't been able to reproduce this error though. May be it is one of the remarks in the release of this version 0.6x. I'm running on Windows XP SP2!
Nevertheless here are the generated unit tests.
public partial class EmployeeServicesTest
{
[TestMethod]
[PexGeneratedBy(typeof(EmployeeServicesTest))]
public void DeterminePensionContribution01()
{
PexValue.Generated.Clear();
Employee employee;
DateTime s0 = new DateTime(1L);
employee = EmployeeFactory.Create
(2, "", "", default(DateTime), s0, 8192u, Contract.FullTime);
EmployeeServices employeeServices = new EmployeeServices();
this.DeterminePensionContribution(employeeServices, employee);
PexValue.Generated.Validate("BaseContribution", "135");
PexValue.Generated.Validate("SupplementaryContribution", "20");
}
[TestMethod]
[PexGeneratedBy(typeof(EmployeeServicesTest))]
public void DeterminePensionContribution02()
{
PexValue.Generated.Clear();
Employee employee;
DateTime s0 = new DateTime(1L);
employee = EmployeeFactory.Create
(2, "", "", default(DateTime), s0, 1983u, Contract.FullTime);
EmployeeServices employeeServices = new EmployeeServices();
this.DeterminePensionContribution(employeeServices, employee);
PexValue.Generated.Validate("BaseContribution", "80");
PexValue.Generated.Validate("SupplementaryContribution", "25");
}
[TestMethod]
[PexGeneratedBy(typeof(EmployeeServicesTest))]
public void DeterminePensionContribution03()
{
PexValue.Generated.Clear();
Employee employee;
DateTime s0 = new DateTime(1L);
employee = EmployeeFactory.Create
(2, "", "", default(DateTime), s0, 8192u, Contract.PartTime);
EmployeeServices employeeServices = new EmployeeServices();
this.DeterminePensionContribution(employeeServices, employee);
PexValue.Generated.Validate("BaseContribution", "135");
PexValue.Generated.Validate("SupplementaryContribution", "20");
}
[TestMethod]
[PexGeneratedBy(typeof(EmployeeServicesTest))]
public void DeterminePensionContribution04()
{
PexValue.Generated.Clear();
Employee employee;
DateTime s0 = new DateTime(647341024241516544L);
DateTime s1 = new DateTime(1L);
employee = EmployeeFactory.Create(2, "", "", s0, s1, 8192u, Contract.FullTime);
EmployeeServices employeeServices = new EmployeeServices();
this.DeterminePensionContribution(employeeServices, employee);
PexValue.Generated.Validate("BaseContribution", "135");
PexValue.Generated.Validate("SupplementaryContribution", "25");
}
[TestMethod]
[PexGeneratedBy(typeof(EmployeeServicesTest))]
public void DeterminePensionContribution05()
{
PexValue.Generated.Clear();
Employee employee;
DateTime s0 = new DateTime(647341024241516544L);
DateTime s1 = new DateTime(1L);
employee = EmployeeFactory.Create(2, "", "", s0, s1, 1983u, Contract.FullTime);
EmployeeServices employeeServices = new EmployeeServices();
this.DeterminePensionContribution(employeeServices, employee);
PexValue.Generated.Validate("BaseContribution", "80");
PexValue.Generated.Validate("SupplementaryContribution", "15");
}
[TestMethod]
[PexGeneratedBy(typeof(EmployeeServicesTest))]
public void DeterminePensionContribution06()
{
PexValue.Generated.Clear();
Employee employee;
DateTime s0 = new DateTime(647341024241516544L);
DateTime s1 = new DateTime(1L);
employee = EmployeeFactory.Create(2, "", "", s0, s1, 8192u, Contract.PartTime);
EmployeeServices employeeServices = new EmployeeServices();
this.DeterminePensionContribution(employeeServices, employee);
PexValue.Generated.Validate("BaseContribution", "135");
PexValue.Generated.Validate("SupplementaryContribution", "20");
}
[TestMethod]
[PexGeneratedBy(typeof(EmployeeServicesTest))]
public void DeterminePensionContribution07()
{
PexValue.Generated.Clear();
Employee employee;
DateTime s0 = new DateTime(1262076461318144L);
DateTime s1 = new DateTime(634715138118123520L);
employee = EmployeeFactory.Create(2, "", "", s0, s1, 8192u, Contract.PartTime);
EmployeeServices employeeServices = new EmployeeServices();
this.DeterminePensionContribution(employeeServices, employee);
PexValue.Generated.Validate("BaseContribution", "135");
PexValue.Generated.Validate("SupplementaryContribution", "30");
}
[TestMethod]
[PexGeneratedBy(typeof(EmployeeServicesTest))]
public void DeterminePensionContribution08()
{
PexValue.Generated.Clear();
Employee employee;
DateTime s0 = new DateTime(56623104001835008L);
DateTime s1 = new DateTime(634715138118123520L);
employee = EmployeeFactory.Create(2, "", "", s0, s1, 1983u, Contract.FullTime);
EmployeeServices employeeServices = new EmployeeServices();
this.DeterminePensionContribution(employeeServices, employee);
PexValue.Generated.Validate("BaseContribution", "80");
PexValue.Generated.Validate("SupplementaryContribution", "15");
}
[TestMethod]
[PexGeneratedBy(typeof(EmployeeServicesTest))]
public void DeterminePensionContribution09()
{
PexValue.Generated.Clear();
Employee employee;
DateTime s0 = new DateTime(647341024241516544L);
DateTime s1 = new DateTime(634715138118123520L);
employee = EmployeeFactory.Create(2, "", "", s0, s1, 8192u, Contract.FullTime);
EmployeeServices employeeServices = new EmployeeServices();
this.DeterminePensionContribution(employeeServices, employee);
PexValue.Generated.Validate("BaseContribution", "135");
PexValue.Generated.Validate("SupplementaryContribution", "30");
}
[TestMethod]
[PexGeneratedBy(typeof(EmployeeServicesTest))]
public void DeterminePensionContribution10()
{
PexValue.Generated.Clear();
Employee employee;
DateTime s0 = new DateTime(647341024241516544L);
DateTime s1 = new DateTime(1L);
employee = EmployeeFactory.Create(2, "", "", s0, s1, 1983u, Contract.PartTime);
EmployeeServices employeeServices = new EmployeeServices();
this.DeterminePensionContribution(employeeServices, employee);
PexValue.Generated.Validate("BaseContribution", "80");
PexValue.Generated.Validate("SupplementaryContribution", "0");
}
[TestMethod]
[PexGeneratedBy(typeof(EmployeeServicesTest))]
public void DeterminePensionContribution11()
{
PexValue.Generated.Clear();
Employee employee;
DateTime s0 = new DateTime(633532870975488000L);
DateTime s1 = new DateTime(126226978751643648L);
employee = EmployeeFactory.Create(2, "", "", s0, s1, 1983u, Contract.FullTime);
EmployeeServices employeeServices = new EmployeeServices();
this.DeterminePensionContribution(employeeServices, employee);
PexValue.Generated.Validate("BaseContribution", "80");
PexValue.Generated.Validate("SupplementaryContribution", "15");
}
}
When you investigate the coverage results for Visual Studio and the output from Pex, you will see that both confirm the 100% coverage result.
Part of the Pex report , coverage section (click on picture for better view):
What about my "business" assumptions? Maybe it would be easier to incorporate them as pre-conditions in the code under test. For example Start date of the contract should be greater than 25/May/1968 in the setter method for Startdatecontract of our Employee class. Non-compliance would than result in an exception being thrown. how will pex cope with them?
Thanks for reading. As always, feel free to comment.
Best regards,
Alexander
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