/// <exception cref="CharacterCodingException"/>
public virtual void TestTextText()
{
Org.Apache.Hadoop.IO.Text a = new Org.Apache.Hadoop.IO.Text("abc");
Org.Apache.Hadoop.IO.Text b = new Org.Apache.Hadoop.IO.Text("a");
b.Set(a);
Assert.Equal("abc", b.ToString());
a.Append(Runtime.GetBytesForString("xdefgxxx"), 1, 4);
Assert.Equal("modified aliased string", "abc", b.ToString());
Assert.Equal("appended string incorrectly", "abcdefg", a.ToString
());
// add an extra byte so that capacity = 14 and length = 8
a.Append(new byte[] { (byte)('d') }, 0, 1);
Assert.Equal(14, a.GetBytes().Length);
Assert.Equal(8, a.CopyBytes().Length);
}
/// <exception cref="System.Exception"/>
public virtual void TestCoding()
{
string before = "Bad \t encoding \t testcase";
Org.Apache.Hadoop.IO.Text text = new Org.Apache.Hadoop.IO.Text(before);
string after = text.ToString();
Assert.True(before.Equals(after));
for (int i = 0; i < NumIterations; i++)
{
// generate a random string
if (i == 0)
{
before = GetLongString();
}
else
{
before = GetTestString();
}
// test string to utf8
ByteBuffer bb = Org.Apache.Hadoop.IO.Text.Encode(before);
byte[] utf8Text = ((byte[])bb.Array());
byte[] utf8Java = Runtime.GetBytesForString(before, "UTF-8");
Assert.Equal(0, WritableComparator.CompareBytes(utf8Text, 0, bb
.Limit(), utf8Java, 0, utf8Java.Length));
// test utf8 to string
after = Org.Apache.Hadoop.IO.Text.Decode(utf8Java);
Assert.True(before.Equals(after));
}
}
/// <exception cref="System.IO.IOException"/>
public virtual void TestReadWithKnownLength()
{
string line = "hello world";
byte[] inputBytes = Runtime.GetBytesForString(line, Charsets.Utf8);
DataInputBuffer @in = new DataInputBuffer();
Org.Apache.Hadoop.IO.Text text = new Org.Apache.Hadoop.IO.Text();
@in.Reset(inputBytes, inputBytes.Length);
text.ReadWithKnownLength(@in, 5);
Assert.Equal("hello", text.ToString());
// Read longer length, make sure it lengthens
@in.Reset(inputBytes, inputBytes.Length);
text.ReadWithKnownLength(@in, 7);
Assert.Equal("hello w", text.ToString());
// Read shorter length, make sure it shortens
@in.Reset(inputBytes, inputBytes.Length);
text.ReadWithKnownLength(@in, 2);
Assert.Equal("he", text.ToString());
}
/// <exception cref="System.Exception"/>
public virtual void TestClear()
{
// Test lengths on an empty text object
Org.Apache.Hadoop.IO.Text text = new Org.Apache.Hadoop.IO.Text();
Assert.Equal("Actual string on an empty text object must be an empty string"
, string.Empty, text.ToString());
Assert.Equal("Underlying byte array length must be zero", 0, text
.GetBytes().Length);
Assert.Equal("String's length must be zero", 0, text.GetLength
());
// Test if clear works as intended
text = new Org.Apache.Hadoop.IO.Text("abcd\u20acbdcd\u20ac");
int len = text.GetLength();
text.Clear();
Assert.Equal("String must be empty after clear()", string.Empty
, text.ToString());
Assert.True("Length of the byte array must not decrease after clear()"
, text.GetBytes().Length >= len);
Assert.Equal("Length of the string must be reset to 0 after clear()"
, 0, text.GetLength());
}
