package AAAufgabe18;
import static org.junit.Assert.*;
import java.io.*;
import org.junit.Test;

public class ToUpperCaseWriterTest
{
	public void writeCharTest(char c1, String c2)
	{
		try(ByteArrayOutputStream baos = new ByteArrayOutputStream();
		OutputStreamWriter osw = new OutputStreamWriter(baos);
		ToUpperCaseWriter writer = new ToUpperCaseWriter(osw);)
		{
			writer.write(c1);
			writer.flush();
			String uppercase = baos.toString();
			assertEquals(c2, uppercase);
		}
		catch (IOException e)
		{
			fail("IOException" + e.getMessage());
		}
	}

	@Test
	public void TestA()
	{
		writeCharTest('a',"A");
	}
	@Test
	public void Test1()
	{
		writeCharTest('1',"1");
	}
	@Test
	public void TestAscii()
	{
		char [] ascii = new char [128];
		for(int i = 0; i<128; i++)
		{
			ascii[i] = (char) i;
		}

		for(int i = 0; i<128; i++)
		{

			String s = Character.toString(ascii[i]);

			if (i < 97 && i > 122) writeCharTest(ascii[i], s);
			else
			{
				char temp = Character.toUpperCase(ascii[i]);
				String ss = Character.toString(temp);
				writeCharTest(ascii[i], ss);
			}
		}
	}
}