public void TestReadFully()
{
const string READFULLY_TEST_FILE = "Lucene.Net.Tests.core.Support.ReadFully.txt";
byte[] buffer = new byte[1367];
Stream @in = GetType().Assembly.GetManifestResourceStream(READFULLY_TEST_FILE);
DataInputStream dis;
using (dis = new DataInputStream(@in))
{
// Read once for real
dis.ReadFully(buffer, 0, 1366);
}
// Read past the end of the stream
@in = GetType().Assembly.GetManifestResourceStream(READFULLY_TEST_FILE);
dis = new DataInputStream(@in);
bool caughtException = false;
try
{
dis.ReadFully(buffer, 0, buffer.Length);
}
#pragma warning disable 168
catch (EndOfStreamException ie)
#pragma warning restore 168
{
caughtException = true;
}
finally
{
dis.Dispose();
if (!caughtException)
fail("Test failed");
}
// Ensure we get an IndexOutOfRangeException exception when length is negative
@in = GetType().Assembly.GetManifestResourceStream(READFULLY_TEST_FILE);
dis = new DataInputStream(@in);
caughtException = false;
try
{
dis.ReadFully(buffer, 0, -20);
}
#pragma warning disable 168
catch (IndexOutOfRangeException ie)
#pragma warning restore 168
{
caughtException = true;
}
finally
{
dis.Dispose();
if (!caughtException)
fail("Test failed");
}
}
/// <summary>
/// Load a stemmer table from an inputstream.
/// </summary>
public static Trie Load(Stream stemmerTable)
{
DataInputStream @in = null;
try
{
@in = new DataInputStream(stemmerTable);
string method = @in.ReadUTF().ToUpperInvariant();
if (method.IndexOf('M') < 0)
{
return new Trie(@in);
}
else
{
return new MultiTrie2(@in);
}
}
finally
{
@in.Dispose();
}
}
public void TestReadLinePushback()
{
using (MemoryStream pis = new MemoryStream("\r".GetBytes(Encoding.UTF8)))
{
DataInputStream dis = new DataInputStream(pis);
#pragma warning disable 612, 618
string line = dis.ReadLine();
#pragma warning restore 612, 618
if (line == null)
{
fail("Got null, should return empty line");
}
long count = pis.Length - (line.Length + 1 /*account for the newline*/);
if (count != 0)
{
fail("Test failed: available() returns "
+ count + " when the file is empty");
}
}
}
private static void WriteAndReadAString()
{
// Write out a string whose UTF-8 encoding is quite possibly
// longer than 65535 bytes
int length = Random().nextInt(A_NUMBER_NEAR_65535) + 1;
MemoryStream baos = new MemoryStream();
StringBuilder testBuffer = new StringBuilder();
for (int i = 0; i < length; i++)
testBuffer.append((char)Random().Next());
string testString = testBuffer.toString();
DataOutputStream dos = new DataOutputStream(baos);
dos.WriteUTF(testString);
// Corrupt the data to produce malformed characters
byte[] testBytes = baos.ToArray();
int dataLength = testBytes.Length;
int corruptions = Random().nextInt(MAX_CORRUPTIONS_PER_CYCLE);
for (int i = 0; i < corruptions; i++)
{
int index = Random().nextInt(dataLength);
testBytes[index] = (byte)Random().Next();
}
// Pay special attention to mangling the end to produce
// partial characters at end
testBytes[dataLength - 1] = (byte)Random().Next();
testBytes[dataLength - 2] = (byte)Random().Next();
// Attempt to decode the bytes back into a String
MemoryStream bais = new MemoryStream(testBytes);
DataInputStream dis = new DataInputStream(bais);
dis.ReadUTF();
}
private static void dotest(DataInputStream dis, int pos, int total,
int toskip, int expected)
{
try
{
if (VERBOSE)
{
Console.WriteLine("\n\nTotal bytes in the stream = " + total);
Console.WriteLine("Currently at position = " + pos);
Console.WriteLine("Bytes to skip = " + toskip);
Console.WriteLine("Expected result = " + expected);
}
int skipped = dis.SkipBytes(toskip);
if (VERBOSE)
{
Console.WriteLine("Actual skipped = " + skipped);
}
if (skipped != expected)
{
fail("DataInputStream.skipBytes does not return expected value");
}
}
catch (EndOfStreamException e)
{
fail("DataInputStream.skipBytes throws unexpected EOFException");
}
catch (IOException e)
{
Console.WriteLine("IOException is thrown - possible result");
}
}
public void TestSkipBytes()
{
DataInputStream dis = new DataInputStream(new MyInputStream());
dotest(dis, 0, 11, -1, 0);
dotest(dis, 0, 11, 5, 5);
Console.WriteLine("\n***CAUTION**** - may go into an infinite loop");
dotest(dis, 5, 11, 20, 6);
}
internal static Trie LoadTrie(string path)
{
Trie trie;
using (DataInputStream @is = new DataInputStream(
new FileStream(path, FileMode.Open, FileAccess.Read)))
{
string method = @is.ReadUTF().ToUpperInvariant();
if (method.IndexOf('M') < 0)
{
trie = new Trie(@is);
}
else
{
trie = new MultiTrie(@is);
}
}
return trie;
}
public void TestReadFully()
{
const string READFULLY_TEST_FILE = "Lucene.Net.Tests.core.Support.ReadFully.txt";
byte[] buffer = new byte[1367];
Stream @in = GetType().Assembly.GetManifestResourceStream(READFULLY_TEST_FILE);
DataInputStream dis;
using (dis = new DataInputStream(@in))
{
// Read once for real
dis.ReadFully(buffer, 0, 1366);
}
// Read past the end of the stream
@in = GetType().Assembly.GetManifestResourceStream(READFULLY_TEST_FILE);
dis = new DataInputStream(@in);
bool caughtException = false;
try
{
dis.ReadFully(buffer, 0, buffer.Length);
}
#pragma warning disable 168
catch (EndOfStreamException ie)
#pragma warning restore 168
{
caughtException = true;
}
finally
{
dis.Dispose();
if (!caughtException)
{
fail("Test failed");
}
}
// Ensure we get an IndexOutOfRangeException exception when length is negative
@in = GetType().Assembly.GetManifestResourceStream(READFULLY_TEST_FILE);
dis = new DataInputStream(@in);
caughtException = false;
try
{
dis.ReadFully(buffer, 0, -20);
}
#pragma warning disable 168
catch (IndexOutOfRangeException ie)
#pragma warning restore 168
{
caughtException = true;
}
finally
{
dis.Dispose();
if (!caughtException)
{
fail("Test failed");
}
}
}