public async void Get_ReturnsACourseWithASpecificId_ThrowIfCourseDoesNotExist()
{
//Arrange
var connectionBuilder = new SqliteConnectionStringBuilder {
DataSource = ":memory:"
};
var connection = new SqliteConnection(connectionBuilder.ToString());
var options = new DbContextOptionsBuilder <ApplicationDbContext>()
.UseSqlite(connection)
.Options;
using var context = new ApplicationDbContext(options);
context.Database.OpenConnection();
context.Database.EnsureCreated();
var courseRepository = new CourseRepository(context);
//Act
var course = CourseHelpers.GetCourse();
await courseRepository.Insert(course);
var returnedCourse = await courseRepository.Get(x => x.Id == 5);
//Assert
Assert.Equal(5, returnedCourse.Id);
await Assert.ThrowsAsync <CoursesException>(
() => courseRepository.Get(x => x.Id == 1));
}
public async void GetAll_GetsAllSavedCourses()
{
// Arrange
var connectionBuilder = new SqliteConnectionStringBuilder {
DataSource = ":memory:"
};
var connection = new SqliteConnection(connectionBuilder.ToString());
var options = new DbContextOptionsBuilder <ApplicationDbContext>()
.UseSqlite(connection)
.Options;
using var context = new ApplicationDbContext(options);
context.Database.OpenConnection();
context.Database.EnsureCreated();
var courseRepository = new CourseRepository(context);
var courses = CourseHelpers.GetCourses();
//Act
context.AddRange(courses);
context.SaveChanges();
var returnedCourses = await courseRepository.GetAll();
//Assert
Assert.Equal(courses.Count(), returnedCourses.Count());
}
public async void Insert_SavesDataAndThrowsForNullData()
{
//Arrange
var connectionBuilder = new SqliteConnectionStringBuilder {
DataSource = ":memory:"
};
var connection = new SqliteConnection(connectionBuilder.ToString());
var options = new DbContextOptionsBuilder <ApplicationDbContext>()
.UseSqlite(connection)
.Options;
using var context = new ApplicationDbContext(options);
context.Database.OpenConnection();
context.Database.EnsureCreated();
var courseRepository = new CourseRepository(context);
var course = CourseHelpers.GetCourse();
//Act
await courseRepository.Insert(course);
var returnedCourses = await courseRepository.GetAll();
//Assert
Assert.Single(returnedCourses);
await Assert.ThrowsAsync <CoursesException>(
() => courseRepository.Insert(null));
}
public async void Update_ModifiesASavedData()
{
//Arrange
var connectionBuilder = new SqliteConnectionStringBuilder {
DataSource = ":memory:"
};
var connection = new SqliteConnection(connectionBuilder.ToString());
var options = new DbContextOptionsBuilder <ApplicationDbContext>()
.UseSqlite(connection)
.Options;
using var context = new ApplicationDbContext(options);
context.Database.OpenConnection();
context.Database.EnsureCreated();
var courseRepository = new CourseRepository(context);
var course = CourseHelpers.GetCourse();
//Act
await courseRepository.Insert(course);
course.Title = "Java Getting Started";
await courseRepository.Update(course);
var returnedCourse = await courseRepository.Get(x => x.Id == 5);
//Assert
Assert.Equal("Java Getting Started", returnedCourse.Title);
}
public async void Delete_RemovesACourseFromDatabase_ThrowsForNonNullObject()
{
//Arrange
var connectionBuilder = new SqliteConnectionStringBuilder {
DataSource = ":memory:"
};
var connection = new SqliteConnection(connectionBuilder.ToString());
var options = new DbContextOptionsBuilder <ApplicationDbContext>()
.UseSqlite(connection)
.Options;
using var context = new ApplicationDbContext(options);
context.Database.OpenConnection();
context.Database.EnsureCreated();
var courseRepository = new CourseRepository(context);
var course = CourseHelpers.GetCourse();
await courseRepository.Insert(course);
//Act
await courseRepository.Delete(course);
var returnedCourses = await courseRepository.GetAll();
//Assert
Assert.Empty(returnedCourses);
await Assert.ThrowsAsync <ArgumentNullException>(
() => courseRepository.Delete(null));
}
public async void AddCourses_AddsCoursesWithSameIdFromTheListOfSudentCourses()
{
//Arrange
var connectionBuilder = new SqliteConnectionStringBuilder {
DataSource = ":memory:"
};
var connection = new SqliteConnection(connectionBuilder.ToString());
var options = new DbContextOptionsBuilder <ApplicationDbContext>()
.UseSqlite(connection)
.Options;
using var context = new ApplicationDbContext(options);
context.Database.OpenConnection();
context.Database.EnsureCreated();
var teacherRepository = new TeacherRepository(context);
var courseRepository = new CourseRepository(context);
var teacher = TeacherHelpers.GetTeacher();
var courses = CourseHelpers.GetCourses();
//Act
foreach (var course in courses)
{
await courseRepository.Insert(course);
}
await teacherRepository.Insert(teacher);
await teacherRepository.AddManyCourses(new List <int> {
1, 2, 3
}, "5");
var numberOfCoursesAfterInsertion = (await teacherRepository.GetCourses("5")).Count();
//Assert
Assert.Equal(3, numberOfCoursesAfterInsertion);
await Assert.ThrowsAsync <AppUserException>(
() => teacherRepository.AddManyCourses(new List <int> {
1, 2, 3
}, "5"));
await Assert.ThrowsAsync <AppUserException>(
() => teacherRepository.AddManyCourses(new List <int> {
10, 29, 13
}, "5"));
}
public async void RemoveCourse_RemovesAcourseWithSameIdFromTheListOfSudentCourses()
{
//Arrange
var connectionBuilder = new SqliteConnectionStringBuilder {
DataSource = ":memory:"
};
var connection = new SqliteConnection(connectionBuilder.ToString());
var options = new DbContextOptionsBuilder <ApplicationDbContext>()
.UseSqlite(connection)
.Options;
using var context = new ApplicationDbContext(options);
context.Database.OpenConnection();
context.Database.EnsureCreated();
var studentRepository = new StudentRepository(context);
var courseRepository = new CourseRepository(context);
var student = StudentHelpers.GetStudent();
var courses = CourseHelpers.GetCourses();
//Act
foreach (var course in courses)
{
await courseRepository.Insert(course);
}
await studentRepository.Insert(student);
await studentRepository.AddCourse(1, "5");
await studentRepository.AddCourse(2, "5");
var numberOfCoursesAfterInsertion = (await studentRepository.GetCourses("5")).Count();
await studentRepository.RemoveCourse(1, "5");
var numberOfCoursesAfterRemoval = (await studentRepository.GetCourses("5")).Count();
//Assert
Assert.Equal(2, numberOfCoursesAfterInsertion);
Assert.Equal(1, numberOfCoursesAfterRemoval);
await studentRepository.RemoveCourse(2, "5");
await Assert.ThrowsAsync <AppUserException>(
() => studentRepository.GetCourses("5"));
}
