public void TruncateTest()
{
// Load font file set the width of every character to 1 for easy testing
byte[] data = Plug.New("resource://mindtouch.deki/MindTouch.Deki.Resources.Arial.mtdf").Get().ToBytes();
int length = (int)data[4] + ((int)data[5] << 8) + ((int)data[6] << 16);
for (int i = 0; i < length; i++)
{
data[8 + 3 * i + 2] = 1;
}
DekiFont font = new DekiFont(data);
String testString = "HelloWorldThisIsMindTouchHowisLife?";
String newString;
// Test that Truncate does it's job properly for different length requirements
for (int i = testString.Length; i > 0; i--)
{
newString = font.Truncate(testString, i);
if (i == testString.Length)
{
Assert.AreEqual(testString, newString);
}
else
{
Assert.AreEqual(new StringBuilder(testString.Substring(0, i)).Append("...").ToString(), newString);
}
}
// Test with int.MaxValue as max length, should return the original string
newString = font.Truncate(testString, int.MaxValue);
Assert.AreEqual(testString, newString);
// Test with 0 as max length, should throw error
try { font.Truncate(testString, 0); }
catch (ArgumentException e)
{ Assert.IsTrue(e.GetType() == (new ArgumentNullException()).GetType()); }
// Change all letters to 0's to make sure that default width get used
for (int i = 0; i < length; i++)
{
data[8 + 3 * i] = 0;
data[8 + 3 * i + 1] = 0;
}
data[7] = 2; // change default width to 2
font = new DekiFont(data);
newString = font.Truncate(testString, 10);
Assert.AreEqual(5 + 3, newString.Length);
}
public void DekiFontConstructorTest()
{
DekiFont f;
// Contruct with null constructor, should fail
try{ f = new DekiFont(null); }
catch (ArgumentException e)
{ Assert.IsTrue(e.GetType() == (new ArgumentNullException()).GetType()); }
// create small data, should fail
byte[] data = { 0, 0, 0 };
try { f = new DekiFont(data); }
catch (ArgumentException e)
{ Assert.IsTrue("data buffer too small" == e.Message.ToString()); }
// Load font file
data = Plug.New("resource://mindtouch.deki/MindTouch.Deki.Resources.Arial.mtdf").Get().ToBytes();
// Attempt to construct class, should pass
f = new DekiFont(data);
// Change to bad size, should fail
byte[] new_data = new byte[data.Length - 1];
for (int i = 0; i < data.Length - 1; i++)
{
new_data[i] = data[i];
}
try{ f = new DekiFont(new_data); }
catch (ArgumentException e)
{ Assert.IsTrue("data size mismatch" == e.Message.ToString()); }
// Change data to bad signature, should fail
data[3] = 50;
try { f = new DekiFont(data); }
catch (ArgumentException e)
{ Assert.IsTrue("unknown data signature" == e.Message.ToString()); }
}
