public async Task GivenAnErrorGettingTheCollection_WhenGetAllIsCalled_ExceptionIsThrown()
{
// arrange
var target = new TestDocumentRepository(context, logger);
Mock.Get(context)
.Setup(x => x.GetCollection <TestDocument>(typeof(TestDocument).Name))
.Throws(new Exception("Test error message"))
.Verifiable();
// act
var actual = await Assert.ThrowsAsync <Exception>(async() =>
await target.GetAllAsync().ConfigureAwait(false))
.ConfigureAwait(false);
// assert
Assert.Equal("Test error message", actual.Message);
Mock.Verify(Mock.Get(context));
}
public async Task GivenADocumentRepository_WhenGetAllAsyncIsCalled_CollectionIsTakenFromContext()
{
// arrange
var target = new TestDocumentRepository(context, logger);
var testCollection = Mock.Of <IMongoCollection <TestDocument> >();
var findCollection = Mock.Of <IAsyncCursor <TestDocument> >();
const string expectedJsonFilter = "{ }";
int index = 0;
var expected = new[] { new TestDocument(), new TestDocument() };
Mock.Get(context)
.Setup(x => x.GetCollection <TestDocument>(typeof(TestDocument).Name))
.Returns(testCollection)
.Verifiable();
Mock.Get(findCollection)
.Setup(x => x.MoveNext(It.IsAny <CancellationToken>()))
.Callback((CancellationToken ct) =>
{
index++;
})
.Returns(() => index < expected.Length);
Mock.Get(findCollection)
.Setup(x => x.Current)
.Returns(expected);
Mock.Get(testCollection)
.Setup(x => x.FindAsync(
It.Is <FilterDefinition <TestDocument> >(filter => filter.RenderToJson().Equals(expectedJsonFilter)),
It.IsAny <FindOptions <TestDocument, TestDocument> >(),
default))
.Returns(Task.FromResult(findCollection))
.Verifiable();
// act
var actual = await target.GetAllAsync().ConfigureAwait(false);
// assert
Assert.Equal(expected, actual);
Mock.Verify(Mock.Get(context));
Mock.Verify(Mock.Get(testCollection));
}