public async Task UpdateSucceedsIfExpectedChangeTokenMatches()
{
DbContextDataProvider <DefaultDataProvider, TestContext> provider = CreateProvider();
string changeToken = Guid.NewGuid().ToString("N");
ITokenGenerator generator = CreateTokenGenerator(changeToken);
TestContext testContext = provider.GetContext();
var dbEntity = new DbEntityWithChangeToken()
{
ChangeToken = changeToken
};
testContext.ChangeTokenEntities.Add(dbEntity);
await testContext.SaveChangesAsync();
TestContextChangeTokenExRepository repository = CreateChangeTokenExRepository(provider, generator);
await repository.UpdateAsync(
new EntityWithChangeTokenEx { Id = dbEntity.Id, ChangeToken = "abc", ExpectedChangeToken = changeToken },
CancellationToken.None);
}
public async Task CreateUsesExplicitChangeToken()
{
DbContextDataProvider <DefaultDataProvider, TestContext> provider = CreateProvider();
string changeToken = Guid.NewGuid().ToString("N");
TestContextChangeTokenExRepository repository = CreateChangeTokenExRepository(provider, Substitute.For <ITokenGenerator>());
EntityWithChangeTokenEx result = await repository.CreateAsync(
new EntityWithChangeTokenEx { ChangeToken = changeToken },
CancellationToken.None);
result.ChangeToken.Should()
.Be(changeToken);
DbEntityWithChangeToken dbEntity =
await provider.GetContext()
.ChangeTokenEntities.FirstAsync(e => e.Id == result.Id);
dbEntity.ChangeToken.Should()
.Be(changeToken);
}
public async Task CreateInitializesChangeTokenEx()
{
DbContextDataProvider <DefaultDataProvider, TestContext> provider = CreateProvider();
string changeToken = Guid.NewGuid().ToString("N");
ITokenGenerator generator = CreateTokenGenerator(changeToken);
TestContextChangeTokenExRepository repository = CreateChangeTokenExRepository(provider, generator);
EntityWithChangeTokenEx result = await repository.CreateAsync(
new EntityWithChangeTokenEx(),
CancellationToken.None);
result.ChangeToken.Should()
.Be(changeToken);
DbEntityWithChangeToken dbEntity =
await provider.GetContext()
.ChangeTokenEntities.FirstAsync(e => e.Id == result.Id);
dbEntity.ChangeToken.Should()
.Be(changeToken);
}
public async Task UpdateThrowsIfExpectedChangeTokenDoesNotMatch()
{
DbContextDataProvider <DefaultDataProvider, TestContext> provider = CreateProvider();
string changeToken = Guid.NewGuid().ToString("N");
ITokenGenerator generator = CreateTokenGenerator(changeToken);
TestContext testContext = provider.GetContext();
var dbEntity = new DbEntityWithChangeToken()
{
ChangeToken = changeToken
};
testContext.ChangeTokenEntities.Add(dbEntity);
await testContext.SaveChangesAsync();
TestContextChangeTokenExRepository repository = CreateChangeTokenExRepository(provider, generator);
await Assert.ThrowsAsync <EntityConcurrencyException>(
() => repository.UpdateAsync(
new EntityWithChangeTokenEx {
Id = dbEntity.Id, ExpectedChangeToken = "abc"
},
CancellationToken.None));
}
