public void GetYoungestStudent()
{
//var student = PracticeData/*FILL IN LINQ EXPRESSION*/;
var student = PracticeData.SelectMany(c => c.Students).OrderByDescending(s => s.Birthday).First();
Assert.AreEqual(student, CohortBuilder.Student3);
}
public void GetAllStudents()
{
//var expected = PracticeData/*FILL IN LINQ EXPRESSION*/.ToList();
var expected = PracticeData.SelectMany(c => c.Students).ToList();
CollectionAssert.AreEqual(expected,
new List <Student> {
CohortBuilder.Student1,
CohortBuilder.Student2,
CohortBuilder.Student3,
CohortBuilder.Student4,
CohortBuilder.Student5,
CohortBuilder.Student6,
CohortBuilder.Student7,
CohortBuilder.Student8,
CohortBuilder.Student9,
CohortBuilder.Student10,
CohortBuilder.Student11,
CohortBuilder.Student12,
CohortBuilder.Student13,
CohortBuilder.Student14,
CohortBuilder.Student15,
CohortBuilder.Student16,
CohortBuilder.Student17,
CohortBuilder.Student18,
CohortBuilder.Student19,
CohortBuilder.Student20
});
}
public void GetAllInactiveStudentsByLastName()
{
var ActualStudents = PracticeData.SelectMany(cohort => cohort.Students).Where(student => student.Active == false).OrderBy(student => student.LastName).ToList();
CollectionAssert.AreEqual(ActualStudents, new List <Student> {
CohortBuilder.Student2, CohortBuilder.Student11, CohortBuilder.Student12, CohortBuilder.Student17
});
}
public void GetAllStudents()
{
var expected = PracticeData.SelectMany(c => { return(c.Students); }).ToList();
CollectionAssert.AreEqual(expected, new List <Student> {
CohortBuilder.Student1, CohortBuilder.Student2, CohortBuilder.Student3, CohortBuilder.Student4, CohortBuilder.Student5, CohortBuilder.Student6, CohortBuilder.Student7, CohortBuilder.Student8, CohortBuilder.Student9, CohortBuilder.Student10, CohortBuilder.Student11, CohortBuilder.Student12, CohortBuilder.Student13, CohortBuilder.Student14, CohortBuilder.Student15, CohortBuilder.Student16, CohortBuilder.Student17, CohortBuilder.Student18, CohortBuilder.Student19, CohortBuilder.Student20
});
}
public void GetAllInactiveStudentsByLastName()
{
var ActualStudents = PracticeData.SelectMany(c => { return(c.Students); }).Where(s => { return(!s.Active); }).OrderBy(s => { return(s.LastName); }).ToList();
CollectionAssert.AreEqual(ActualStudents, new List <Student> {
CohortBuilder.Student2, CohortBuilder.Student11, CohortBuilder.Student12, CohortBuilder.Student17
});
}
public void GetAllInactiveStudentsByLastName()
{
var ActualStudents = PracticeData.SelectMany(cohort => cohort.Students).Where(student => !student.Active) /*FILL IN LINQ EXPRESSION*/.ToList();
CollectionAssert.AreEqual(ActualStudents, new List <Student> {
CohortBuilder.Student2, CohortBuilder.Student11, CohortBuilder.Student12, CohortBuilder.Student17
});
}
public void GetOldestStudent()
{
//var allStudents = PracticeData.SelectMany(c => c.Students).ToList();
//var allStudents = PracticeData.SelectMany(c => c.Students);
//var studentBdays = allStudents.OrderBy(s => s.Birthday);
//var student = PracticeData/*FILL IN LINQ EXPRESSION*/;
var student = PracticeData.SelectMany(c => c.Students).OrderBy(s => s.Birthday).First();
Assert.AreEqual(student, CohortBuilder.Student18);
}
public void GetOldestStudent()
{
// this does not work
// var student = PracticeData.SelectMany(cohort => cohort.Students).Min(eachStudent => eachStudent.Birthday)/*FILL IN LINQ EXPRESSION*/;
// this works
//var student = (from eachStudent in PracticeData.SelectMany(cohort => cohort.Students)
// orderby eachStudent.Birthday ascending
// select eachStudent).First();
var student = PracticeData.SelectMany(cohort => cohort.Students).OrderBy(eachStudent => eachStudent.Birthday).First();
Assert.AreEqual(student, CohortBuilder.Student18);
}
public void GetAllInactiveStudentsByLastName()
{
//var alphaStudents = PracticeData.SelectMany(c => c.Students).OrderBy(s => s.LastName);
//var ActualStudents = PracticeData/*FILL IN LINQ EXPRESSION*/.ToList();
var ActualStudents = PracticeData.SelectMany(c => c.Students).OrderBy(s => s.LastName).Where(s => s.Active == false).ToList();
CollectionAssert.AreEqual(ActualStudents,
new List <Student> {
CohortBuilder.Student2,
CohortBuilder.Student11,
CohortBuilder.Student12,
CohortBuilder.Student17
});
}
public void GetYoungestStudent()
{
var student = PracticeData.SelectMany(cohort => cohort.Students).OrderByDescending(students => students.Birthday).First();
Assert.AreEqual(student, CohortBuilder.Student3);
}
public void GetOldestStudent()
{
var student = PracticeData.SelectMany(cohort => cohort.Students).OrderBy(s => s.Birthday).First();
Assert.AreEqual(student, CohortBuilder.Student18);
}
public void GetYoungestStudent()
{
var student = PracticeData.SelectMany(c => c.Students).OrderBy(s => s.Birthday).Last();
Assert.AreEqual(student, CohortBuilder.Student3);
}
public void GetYoungestStudent()
{
var student = PracticeData.SelectMany(c => c.Students).Single(s => { return(s.Birthday == PracticeData.SelectMany(c => { return c.Students; }).Max(st => { return st.Birthday; })); });
Assert.AreEqual(student, CohortBuilder.Student3);
}
public void GetYoungestStudent()
{
var student = PracticeData.SelectMany(cohort => cohort.Students).OrderByDescending(pupil => pupil.Birthday).ToList()[0]; /*FILL IN LINQ EXPRESSION*/
Assert.AreEqual(student, CohortBuilder.Student3);
}
public void GetYoungestStudent()
{
var student = PracticeData.SelectMany(cohort => cohort.Students).OrderByDescending(eachStudent => eachStudent.Birthday).First() /*FILL IN LINQ EXPRESSION*/;
Assert.AreEqual(student, CohortBuilder.Student3);
}