/// <summary>
/// Writes a known inconsistent state to the storage and asserts an exception will be thrown.
/// </summary>
/// <returns>The <see cref="InconsistentStateException"/> thrown by the provider. This can be further inspected
/// by the storage specific asserts.</returns>
internal async Task <InconsistentStateException> PersistenceStorage_WriteInconsistentFailsWithInconsistentStateException()
{
//Some version not expected to be in the storage for this type and ID.
var inconsistentStateVersion = RandomUtilities.GetRandom <int>().ToString(CultureInfo.InvariantCulture);
var inconsistentState = CommonStorageUtilities.GetTestReferenceAndState(RandomUtilities.GetRandom <long>(), inconsistentStateVersion);
string grainTypeName = GrainTypeGenerator.GetGrainType <Guid>();
var exception = await Record.ExceptionAsync(() => Store_WriteRead(grainTypeName, inconsistentState.Item1, inconsistentState.Item2));
Assert.NotNull(exception);
Assert.IsType <InconsistentStateException>(exception);
return((InconsistentStateException)exception);
}
/// <summary>
/// Writes to storage and tries to re-write the same state with NULL as ETag, as if the grain was just created.
/// </summary>
/// <returns>The <see cref="InconsistentStateException"/> thrown by the provider. This can be further inspected
/// by the storage specific asserts.</returns>
internal async Task <InconsistentStateException> PersistenceStorage_WriteDuplicateFailsWithInconsistentStateException()
{
//A grain with a random ID will be arranged to the database. Then its state is set to null to simulate the fact
//it is like a second activation after a one that has succeeded to write.
string grainTypeName = GrainTypeGenerator.GetGrainType <Guid>();
var inconsistentState = this.GetTestReferenceAndState(RandomUtilities.GetRandom <long>(), null);
var grainReference = inconsistentState.Item1;
var grainState = inconsistentState.Item2;
await Store_WriteRead(grainTypeName, inconsistentState.Item1, inconsistentState.Item2);
grainState.ETag = null;
var exception = await Record.ExceptionAsync(() => Store_WriteRead(grainTypeName, grainReference, grainState));
Assert.NotNull(exception);
Assert.IsType <InconsistentStateException>(exception);
return((InconsistentStateException)exception);
}