/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.test.shell.bjorne;
import java.io.File;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.jnode.shell.CommandLine;
import org.jnode.shell.PathnamePattern;
import org.jnode.shell.ShellException;
import org.jnode.shell.bjorne.BjorneContext;
import org.jnode.shell.bjorne.BjorneToken;
import org.jnode.shell.io.CommandIOHolder;
import org.junit.Assert;
import org.junit.Test;
/**
* Some unit tests for the BjorneContext class, focusing on the expansion and
* word-splitting methods.
*
* @author crawley@jnode.org
*/
public class BjorneContextTest {
// This class simply allows us to call the setVariable method directly
private static class TestBjorneContext extends BjorneContext {
TestBjorneContext(CommandIOHolder[] holders) {
super(null, holders);
}
TestBjorneContext() {
super(null, null);
}
/**
* Expose method for testing
*/
@Override
protected void setVariable(String name, String value) {
super.setVariable(name, value);
}
/**
* For testing, 'execute' a command by converting to lowercase with '-'
* guards.
*/
@Override
protected StringBuffer runBacktickCommand(String commandLine) throws ShellException {
return new StringBuffer("-" + commandLine.toLowerCase() + "-");
}
}
@Test
public void testContext() {
new BjorneContext(null, null);
}
@Test
public void testExpand1() throws ShellException {
BjorneContext context = new TestBjorneContext();
List<BjorneToken> expansion = context.expandAndSplit();
checkExpansion(expansion, new String[] {});
}
@Test
public void testExpand3() throws ShellException {
BjorneContext context = new TestBjorneContext();
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("hi"));
checkExpansion(expansion, new String[] {"hi"});
}
@Test
public void testExpand4() throws ShellException {
BjorneContext context = new TestBjorneContext();
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("hi there"));
checkExpansion(expansion, new String[] {"hi", "there"});
}
@Test
public void testExpand5() throws ShellException {
BjorneContext context = new TestBjorneContext();
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("'hi there '"));
checkExpansion(expansion, new String[] {"hi there "});
}
@Test
public void testExpand6() throws ShellException {
BjorneContext context = new TestBjorneContext();
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("\"hi there \" "));
checkExpansion(expansion, new String[] {"hi there "});
}
@Test
public void testExpand7() throws ShellException {
BjorneContext context = new TestBjorneContext();
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("hi\\ there"));
checkExpansion(expansion, new String[] {"hi there"});
}
@Test
public void testExpand8() throws ShellException {
BjorneContext context = new TestBjorneContext();
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("\\\"hi\\ there\\\""));
checkExpansion(expansion, new String[] {"\"hi there\""});
}
@Test
public void testExpand9() throws ShellException {
BjorneContext context = new TestBjorneContext();
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("$?"));
checkExpansion(expansion, new String[] {"0"});
}
@Test
public void testExpand10() throws ShellException {
TestBjorneContext context = new TestBjorneContext();
context.setVariable("A", "A");
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("$A"));
checkExpansion(expansion, new String[] {"A"});
}
@Test
public void testExpand11() throws ShellException {
TestBjorneContext context = new TestBjorneContext();
context.setVariable("A", "A");
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("\\$A"));
checkExpansion(expansion, new String[] {"$A"});
}
@Test
public void testExpand12() throws ShellException {
TestBjorneContext context = new TestBjorneContext();
context.setVariable("A", "A");
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("\"$A\""));
checkExpansion(expansion, new String[] {"A"});
}
@Test
public void testExpand13() throws ShellException {
TestBjorneContext context = new TestBjorneContext();
context.setVariable("A", "A");
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("'$A'"));
checkExpansion(expansion, new String[] {"$A"});
}
@Test
public void testExpand14() throws ShellException {
TestBjorneContext parentContext = new TestBjorneContext(new CommandIOHolder[0]);
parentContext.setVariable("A", "A");
BjorneContext context = new BjorneContext(parentContext);
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("'$A'"));
checkExpansion(expansion, new String[] {"$A"});
}
@Test
public void testExpand15() throws Exception {
PathnamePattern.clearCache();
BjorneContext context = new TestBjorneContext();
Assert.assertEquals(true, context.isGlobbing());
Assert.assertEquals(true, context.isTildeExpansion());
if (new File("../README.txt").exists()) {
CommandLine expansion = context.buildCommandLine(new BjorneToken("../README.*"));
checkExpansion(expansion, new String[] {"../README.txt"});
expansion = context.buildCommandLine(new BjorneToken("../README.\\*"));
checkExpansion(expansion, new String[] {"../README.*"});
expansion = context.buildCommandLine(new BjorneToken("\"../README.*\""));
checkExpansion(expansion, new String[] {"../README.*"});
expansion = context.buildCommandLine(new BjorneToken("\'../README.*\'"));
checkExpansion(expansion, new String[] {"../README.*"});
context.setGlobbing(false);
expansion = context.buildCommandLine(new BjorneToken("../README.*"));
checkExpansion(expansion, new String[] {"../README.*"});
} else {
System.err.println("skipping 'glob' tests ... no ../README.txt");
}
}
@Test
public void testExpand16() throws Exception {
BjorneContext context = new TestBjorneContext();
Assert.assertEquals(true, context.isGlobbing());
Assert.assertEquals(true, context.isTildeExpansion());
CommandLine expansion = context.buildCommandLine(new BjorneToken("~"));
checkExpansion(expansion, new String[] {System.getProperty("user.home")});
context.setTildeExpansion(false);
expansion = context.buildCommandLine(new BjorneToken("~"));
checkExpansion(expansion, new String[] {"~"});
}
@Test
public void testExpand17() throws ShellException {
TestBjorneContext context = new TestBjorneContext();
context.setVariable("A", "A");
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("${A}"));
checkExpansion(expansion, new String[] {"A"});
}
@Test
public void testExpand18() throws ShellException {
TestBjorneContext context = new TestBjorneContext();
context.setVariable("A", "A");
context.setVariable("B", "");
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("${#A} ${#B} ${#C}"));
checkExpansion(expansion, new String[] {"1", "0", "0"});
}
@Test
public void testExpand19() throws ShellException {
TestBjorneContext context = new TestBjorneContext();
context.setVariable("A", "A");
context.setVariable("B", "");
List<BjorneToken> expansion =
context.expandAndSplit(new BjorneToken("${A:-X} ${B:-Y} ${C:-Z}"));
checkExpansion(expansion, new String[] {"A", "Y", "Z"});
}
@Test
public void testExpand20() throws ShellException {
TestBjorneContext context = new TestBjorneContext();
context.setVariable("A", "");
context.setVariable("B", "B");
List<BjorneToken> expansion =
context.expandAndSplit(new BjorneToken(
"${A:-$B} ${A:-${B}} ${A:-${A:-$B}} ${A:-'${B}'}"));
checkExpansion(expansion, new String[] {"B", "B", "B", "${B}"});
}
@Test
public void testExpand21() throws ShellException {
TestBjorneContext context = new TestBjorneContext();
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("`Hello`"));
checkExpansion(expansion, new String[] {"-hello-"});
}
@Test
public void testExpand22() throws ShellException {
TestBjorneContext context = new TestBjorneContext();
List<BjorneToken> expansion = context.expandAndSplit(new BjorneToken("$(Hello)"));
checkExpansion(expansion, new String[] {"-hello-"});
}
private void checkExpansion(List<BjorneToken> expansion, String[] expected) {
int i;
Iterator<BjorneToken> it = expansion.iterator();
for (i = 0; i < expected.length; i++) {
if (it.hasNext()) {
Assert.assertEquals("incorrect expansion at word " + i, expected[i], it.next()
.getText());
} else {
Assert.fail("Too few words in expansion at word " + i + ": expecting '" +
expected[i] + "'");
}
}
if (it.hasNext()) {
Assert.fail("Too many words in expansion at word " + i + ": '" + it.next() + "'");
}
}
private void checkExpansion(CommandLine expansion, String[] expected) {
List<BjorneToken> words = new LinkedList<BjorneToken>();
words.add((BjorneToken) expansion.getCommandToken());
for (CommandLine.Token word : expansion.getArgumentTokens()) {
words.add((BjorneToken) word);
}
checkExpansion(words, expected);
}
}