public async Task GivenVersion_WhenGettingCurrentVersion_ThenConvertToSchemaVersion(int version, SchemaVersion expected)
{
IReadOnlySchemaManagerDataStore schemaManager = Substitute.For <IReadOnlySchemaManagerDataStore>();
var resolver = new SqlSchemaVersionResolver(schemaManager);
using CancellationTokenSource tokenSource = new CancellationTokenSource();
schemaManager.GetCurrentSchemaVersionAsync(tokenSource.Token).Returns(Task.FromResult(version));
Assert.Equal(expected, await resolver.GetCurrentVersionAsync(tokenSource.Token));
}
/// <summary>
/// Asynchronously fetches the current version from the SQL database.
/// </summary>
/// <param name="cancellationToken">
/// The token to monitor for cancellation requests. The default value is <see cref="CancellationToken.None"/>.
/// </param>
/// <returns>
/// A task representing the asychronous operation. The value of its <see cref="Task{TResult}.Result"/>
/// property contains the current version in the SQL database.
/// </returns>
/// <exception cref="OperationCanceledException">The <paramref name="cancellationToken"/> was canceled.</exception>
public async Task <SchemaVersion> GetCurrentVersionAsync(CancellationToken cancellationToken = default)
=> (SchemaVersion)await _schemaManager.GetCurrentSchemaVersionAsync(cancellationToken);