/// <exception cref="System.Exception"/>
public virtual void TestEmptyFile()
{
Configuration conf = new Configuration();
FileSystem fs = FileSystem.GetLocal(conf);
WriteTest(fs, new RandomDatum[0], TestFile);
ArrayFile.Reader reader = new ArrayFile.Reader(fs, TestFile, conf);
NUnit.Framework.Assert.IsNull(reader.Get(0, new RandomDatum()));
reader.Close();
}
/// <exception cref="System.IO.IOException"/>
private static void ReadTest(FileSystem fs, RandomDatum[] data, string file, Configuration
conf)
{
RandomDatum v = new RandomDatum();
if (Log.IsDebugEnabled())
{
Log.Debug("reading " + data.Length + " debug");
}
ArrayFile.Reader reader = new ArrayFile.Reader(fs, file, conf);
try
{
for (int i = 0; i < data.Length; i++)
{
// try forwards
reader.Get(i, v);
if (!v.Equals(data[i]))
{
throw new RuntimeException("wrong value at " + i);
}
}
for (int i_1 = data.Length - 1; i_1 >= 0; i_1--)
{
// then backwards
reader.Get(i_1, v);
if (!v.Equals(data[i_1]))
{
throw new RuntimeException("wrong value at " + i_1);
}
}
if (Log.IsDebugEnabled())
{
Log.Debug("done reading " + data.Length + " debug");
}
}
finally
{
reader.Close();
}
}
/// <summary>
/// test on
/// <see cref="Reader"/>
/// iteration methods
/// <pre>
/// <c>next(), seek()</c>
/// in and out of range.
/// </pre>
/// </summary>
public virtual void TestArrayFileIteration()
{
int Size = 10;
Configuration conf = new Configuration();
try
{
FileSystem fs = FileSystem.Get(conf);
ArrayFile.Writer writer = new ArrayFile.Writer(conf, fs, TestFile, typeof(LongWritable
), SequenceFile.CompressionType.Record, defaultProgressable);
NUnit.Framework.Assert.IsNotNull("testArrayFileIteration error !!!", writer);
for (int i = 0; i < Size; i++)
{
writer.Append(new LongWritable(i));
}
writer.Close();
ArrayFile.Reader reader = new ArrayFile.Reader(fs, TestFile, conf);
LongWritable nextWritable = new LongWritable(0);
for (int i_1 = 0; i_1 < Size; i_1++)
{
nextWritable = (LongWritable)reader.Next(nextWritable);
Assert.Equal(nextWritable.Get(), i_1);
}
Assert.True("testArrayFileIteration seek error !!!", reader.Seek
(new LongWritable(6)));
nextWritable = (LongWritable)reader.Next(nextWritable);
Assert.True("testArrayFileIteration error !!!", reader.Key() ==
7);
Assert.True("testArrayFileIteration error !!!", nextWritable.Equals
(new LongWritable(7)));
NUnit.Framework.Assert.IsFalse("testArrayFileIteration error !!!", reader.Seek(new
LongWritable(Size + 5)));
reader.Close();
}
catch (Exception)
{
Fail("testArrayFileWriterConstruction error !!!");
}
}
