/**
* Copyright (c) 2005-2013 by Appcelerator, Inc. All Rights Reserved.
* Licensed under the terms of the Eclipse Public License (EPL).
* Please see the license.txt included with this distribution for details.
* Any modifications to this file must keep this entire header intact.
*/
/*
* Created on Apr 27, 2006
*/
package org.python.pydev.parser.jython;
import java.io.IOException;
import org.python.pydev.shared_core.string.FastStringBuffer;
import junit.framework.TestCase;
public class ReaderCharStreamTest extends TestCase {
public static void main(String[] args) {
junit.textui.TestRunner.run(ReaderCharStreamTest.class);
}
@Override
protected void setUp() throws Exception {
super.setUp();
FastCharStream.ACCEPT_GET_SUFFIX = true;
}
@Override
protected void tearDown() throws Exception {
FastCharStream.ACCEPT_GET_SUFFIX = false;
super.tearDown();
}
public void testIt2() throws Exception {
String s = new String(new char[] { '\n', 34, 34, 34, '\n', 97, '\n', 34, 34, 34 });
//
//"""
//a
//"""
FastCharStream in = new FastCharStream(s.toCharArray());
checkCvsStream(in);
}
private void checkCvsStream(FastCharStream in) throws IOException {
assertEquals(10, in.BeginToken());
in.backup(0);
assertEquals("\n", new String(in.GetSuffix(1)));
FastStringBuffer buf = new FastStringBuffer();
in.AppendSuffix(buf, 1);
assertEquals("\n", buf.toString());
in.backup(1);
assertEquals(10, in.readChar());
assertEquals(34, in.readChar());
assertEquals(34, in.readChar());
assertEquals(34, in.readChar());
assertEquals(10, in.readChar());
assertEquals(97, in.readChar());
assertEquals(10, in.readChar());
assertEquals(34, in.readChar());
assertEquals(34, in.readChar());
assertEquals(34, in.readChar());
try {
in.readChar();
fail("Expectend end");
} catch (IOException e) {
// expected
}
}
public void testIt() throws Exception {
String initialDoc = "a\n" + "bc\n";
FastCharStream in;
in = new FastCharStream(initialDoc.toCharArray());
doTests(in);
in = new FastCharStream(initialDoc.toCharArray());
doTests2(in);
}
private void doTests2(FastCharStream in) throws IOException {
assertEquals('a', in.readChar());
assertEquals("a", in.GetImage());
assertEquals('\n', in.BeginToken());
assertEquals('b', in.readChar());
assertEquals("\nb", in.GetImage());
in.backup(1);
assertEquals("\n", in.GetImage());
assertEquals('b', in.BeginToken());
assertEquals("b", in.GetImage());
assertEquals('c', in.BeginToken());
assertEquals("c", in.GetImage());
assertEquals('\n', in.BeginToken());
assertEquals("\n", in.GetImage());
try {
in.BeginToken();
fail("expected exception");
} catch (IOException e) {
// expected
}
assertEquals("\n", in.GetImage());
}
/**
* @param in
* @throws IOException
*/
private void doTests(FastCharStream in) throws IOException {
FastStringBuffer buf = new FastStringBuffer();
assertEquals('a', in.BeginToken());
checkStart(in, 1, 1);
assertEquals(1, in.getEndColumn());
assertEquals(1, in.getEndLine());
assertEquals("a", in.GetImage());
assertEquals("a", new String(in.GetSuffix(1)));
in.AppendSuffix(buf.clear(), 1);
assertEquals("a", buf.toString());
char[] cs = new char[2];
cs[1] = 'a';
assertEquals(new String(cs), new String(in.GetSuffix(2)));
in.AppendSuffix(buf.clear(), 2);
assertEquals(new String(cs), buf.toString());
cs = new char[3];
cs[2] = 'a';
assertEquals(new String(cs), new String(in.GetSuffix(3)));
in.AppendSuffix(buf.clear(), 3);
assertEquals(new String(cs), buf.toString());
assertEquals('\n', in.readChar());
checkStart(in, 1, 1);
assertEquals(2, in.getEndColumn());
assertEquals(1, in.getEndLine());
assertEquals("a\n", in.GetImage());
assertEquals("\n", new String(in.GetSuffix(1)));
in.AppendSuffix(buf.clear(), 1);
assertEquals("\n", buf.toString());
assertEquals("a\n", new String(in.GetSuffix(2)));
in.AppendSuffix(buf.clear(), 2);
assertEquals("a\n", buf.toString());
assertEquals('b', in.readChar());
checkStart(in, 1, 1);
assertEquals(1, in.getEndColumn());
assertEquals(2, in.getEndLine());
assertEquals("a\nb", in.GetImage());
assertEquals('c', in.readChar());
checkStart(in, 1, 1);
assertEquals(2, in.getEndColumn());
assertEquals(2, in.getEndLine());
assertEquals("a\nbc", in.GetImage());
in.backup(1);
assertEquals("a\nb", in.GetImage());
assertEquals(1, in.getEndColumn());
assertEquals(2, in.getEndLine());
assertEquals('c', in.readChar());
assertEquals("a\nbc", in.GetImage());
checkStart(in, 1, 1);
assertEquals(2, in.getEndColumn());
assertEquals(2, in.getEndLine());
assertEquals('\n', in.readChar());
checkStart(in, 1, 1);
assertEquals(3, in.getEndColumn());
assertEquals(2, in.getEndLine());
try {
in.readChar();
fail("Expected exception");
} catch (IOException e) {
//ok
}
assertEquals(3, in.getEndColumn());
assertEquals(2, in.getEndLine());
in.backup(0);
assertEquals(3, in.getEndColumn());
assertEquals(2, in.getEndLine());
assertEquals("bc\n", new String(in.GetSuffix(3)));
in.AppendSuffix(buf.clear(), 3);
assertEquals("bc\n", buf.toString());
cs = new char[6];
cs[1] = 'a';
cs[2] = '\n';
cs[3] = 'b';
cs[4] = 'c';
cs[5] = '\n';
final String suf = new String(in.GetSuffix(6));
assertEquals(new String(cs), suf);
in.AppendSuffix(buf.clear(), 6);
assertEquals(new String(cs), buf.toString());
in.backup(4);
assertEquals("a", in.GetImage());
assertEquals('\n', in.readChar());
assertEquals("a\n", in.GetImage());
assertEquals(2, in.getEndColumn());
assertEquals(1, in.getEndLine());
}
/**
* @param in
*/
private void checkStart(FastCharStream in, int line, int col) {
assertEquals(1, in.getBeginColumn());
assertEquals(1, in.getBeginLine());
}
}