import static java.lang.System.in;
import static java.lang.System.setIn;
import static org.junit.Assert.fail;

import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.io.PrintStream;
import java.nio.channels.Pipe;

import org.jmock.Expectations;
import org.jmock.Mockery;
import org.jmock.lib.legacy.ClassImposteriser;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.contrib.java.lang.system.TextFromStandardInputStream;

public class UnitTests {
	private Mockery context = new Mockery() {{
		setImposteriser(ClassImposteriser.INSTANCE);
	}};
	private main mn;
	private InputStream oldIn;
	private PrintStream oldOut;
	private InputStream mockIn;
	private InputStreamReader mockinputStream;
	private PrintStream mockOut;
	private BufferedReader reader;

	
	@Before
	public void setMinimalMockingExpectations() throws IOException {
		mn = context.mock(main.class);
		mockinputStream = context.mock(InputStreamReader.class);
		oldIn = System.in;
		oldOut = System.out;
		mockIn = context.mock(InputStream.class);
		mockOut = context.mock(PrintStream.class);
		System.setOut(mockOut);
		//System.setIn(mockIn);
	}
	
	@After
	public void reset() {
		//System.setOut(oldOut);
		//System.setIn(oldIn);
	}
	
	@Rule
	public final TextFromStandardInputStream selectF = new TextFromStandardInputStream("F\nDNE\n");
	@Test
	public void EnsureFileCheckExists() throws IOException {
		/*InputStream originalIn = System.in;
		PipedInputStream pipeInput = new PipedInputStream();
		BufferedReader reader = new BufferedReader(new InputStreamReader(pipeInput));
		final PipedOutputStream out = new PipedOutputStream(pipeInput);
		System.setIn(pipeInput);
		out.write("F\n".getBytes());
		out.write("DNE\n".getBytes());*/

		Expectations exp;
		exp = new Expectations() {{
			one(mockOut).println("Do you want to process standard (I)nput, or a (F)ile? I/F");
			one(mockOut).println("Enter filename: ");

			//System.setIn(new ByteArrayInputStream("DNE".getBytes()));
			//one(mn).readInput(); will(returnValue("-1"));
			//one(mn).readInput(); will(returnValue(DNE));
			//one(mn).ensureFileExists(DNE); will(returnValue(false));
		}};
		context.checking(exp);
		main.main(null);
//		System.setIn(originalIn);
	}
}