public async void Given_CountriesExist_When_GetCountries_Then_ReturnOrderedList()
{
// Arrange
var countries = new List <Country> {
new Country {
Name = "Mexico"
},
new Country {
Name = "England"
},
new Country {
Name = "Spain"
}
};
var contextMock = MockDbContext(countries.AsQueryable());
var handler = new GetCountriesQueryHandler(contextMock.Object);
//Act
var result = await handler.Handle(new GetCountriesQuery(), CancellationToken.None);
//Assert
var orderedList = countries
.OrderBy(t => t.Name)
.Select(t => new CountryDto {
Name = t.Name
});
result.Count().Should().Be(3);
result.SequenceEqual(orderedList);
}
public async void Given_NoCountriesExist_When_GetCountriesIsCalled_Then_ReturnEmptyList()
{
// Arrange
var countries = new List <Country>();
var contextMock = MockDbContext(countries.AsQueryable());
var handler = new GetCountriesQueryHandler(contextMock.Object);
//Act
var result = await handler.Handle(new GetCountriesQuery(), CancellationToken.None);
//Assert
result.Count().Should().Be(0);
}
public void Handle_NoCountriesExists_ThrowException(
[Frozen] Mock <IRepository <Entities.CountryRegion> > countryRegionRepoMock,
GetCountriesQueryHandler sut,
GetCountriesQuery query
)
{
//Arrange
countryRegionRepoMock.Setup(x => x.ListAsync(It.IsAny <CancellationToken>()))
.ReturnsAsync((List <Entities.CountryRegion>)null);
//Act
Func <Task> func = async() => await sut.Handle(query, CancellationToken.None);
//Assert
func.Should().ThrowAsync <ArgumentNullException>();
countryRegionRepoMock.Verify(x => x.ListAsync(It.IsAny <CancellationToken>()));
}
public async Task Handle_CountriesExists_ReturnCountries(
List <Entities.CountryRegion> countries,
[Frozen] Mock <IRepository <Entities.CountryRegion> > countryRegionRepoMock,
GetCountriesQueryHandler sut,
GetCountriesQuery query
)
{
//Arrange
countryRegionRepoMock.Setup(x => x.ListAsync(It.IsAny <CancellationToken>()))
.ReturnsAsync(countries);
//Act
var result = await sut.Handle(query, CancellationToken.None);
//Assert
result.Should().NotBeNull();
countryRegionRepoMock.Verify(x => x.ListAsync(It.IsAny <CancellationToken>()));
for (int i = 0; i < result.Count; i++)
{
result[i].Name.Should().Be(countries[i].Name);
}
}