private static void GetFieldValueAsync <T>(MockDataReader reader, CancellationToken cancellationToken, int ordinal, T expected)
{
Task <T> result = reader.GetFieldValueAsync <T>(ordinal, cancellationToken);
result.Wait();
AssertEqualsWithDescription("GetValue", reader.LastCommand, "Last command was not as expected");
AssertEqualsWithDescription(expected, result.Result, "GetFieldValueAsync did not return expected value");
}
public static void TestDbDataReader()
{
var query = Enumerable.Range(1, 2).Select((x) => new object[] { x, x.ToString(), DBNull.Value });
MockDataReader reader = new MockDataReader {
Results = query.GetEnumerator()
};
CancellationTokenSource source = new CancellationTokenSource();
Task <bool> result;
result = reader.ReadAsync(); result.Wait();
AssertEqualsWithDescription("Read", reader.LastCommand, "Last command was not as expected");
Assert.True(result.Result, "Should have received a Result from the ReadAsync");
Assert.False(reader.CancellationToken.CanBeCanceled, "Default cancellation token should not be cancellable");
GetFieldValueAsync(reader, 0, 1);
Assert.False(reader.CancellationToken.CanBeCanceled, "Default cancellation token should not be cancellable");
GetFieldValueAsync(reader, source.Token, 1, "1");
result = reader.ReadAsync(source.Token); result.Wait();
AssertEqualsWithDescription("Read", reader.LastCommand, "Last command was not as expected");
Assert.True(result.Result, "Should have received a Result from the ReadAsync");
GetFieldValueAsync <object>(reader, 2, DBNull.Value);
GetFieldValueAsync <DBNull>(reader, 2, DBNull.Value);
reader.GetFieldValueAsync <int?>(2).ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnFaulted).Wait();
reader.GetFieldValueAsync <string>(2).ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnFaulted).Wait();
reader.GetFieldValueAsync <bool>(2).ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnFaulted).Wait();
AssertEqualsWithDescription("GetValue", reader.LastCommand, "Last command was not as expected");
result = reader.ReadAsync(); result.Wait();
AssertEqualsWithDescription("Read", reader.LastCommand, "Last command was not as expected");
Assert.False(result.Result, "Should NOT have received a Result from the ReadAsync");
result = reader.NextResultAsync();
AssertEqualsWithDescription("NextResult", reader.LastCommand, "Last command was not as expected");
Assert.False(result.Result, "Should NOT have received a Result from NextResultAsync");
Assert.False(reader.CancellationToken.CanBeCanceled, "Default cancellation token should not be cancellable");
result = reader.NextResultAsync(source.Token);
AssertEqualsWithDescription("NextResult", reader.LastCommand, "Last command was not as expected");
Assert.False(result.Result, "Should NOT have received a Result from NextResultAsync");
MockDataReader readerFail = new MockDataReader {
Results = query.GetEnumerator(), Fail = true
};
readerFail.ReadAsync().ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnFaulted).Wait();
readerFail.ReadAsync(source.Token).ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnFaulted).Wait();
readerFail.NextResultAsync().ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnFaulted).Wait();
readerFail.NextResultAsync(source.Token).ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnFaulted).Wait();
readerFail.GetFieldValueAsync <object>(0).ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnFaulted).Wait();
readerFail.GetFieldValueAsync <object>(0, source.Token).ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnFaulted).Wait();
source.Cancel();
reader.LastCommand = "Nothing";
reader.ReadAsync(source.Token).ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnCanceled).Wait();
AssertEqualsWithDescription("Nothing", reader.LastCommand, "Expected last command to be 'Nothing'");
reader.NextResultAsync(source.Token).ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnCanceled).Wait();
AssertEqualsWithDescription("Nothing", reader.LastCommand, "Expected last command to be 'Nothing'");
reader.GetFieldValueAsync <object>(0, source.Token).ContinueWith((t) => { }, TaskContinuationOptions.OnlyOnCanceled).Wait();
AssertEqualsWithDescription("Nothing", reader.LastCommand, "Expected last command to be 'Nothing'");
}