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* Version: CPL 1.0/GPL 2.0/LGPL 2.1
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* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
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*
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* Copyright (C) 2006 Mirko Stocker <me@misto.ch>
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package org.jruby.ast.visitor.rewriter;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import junit.framework.Test;
import junit.framework.TestSuite;
import org.jruby.parser.Parser;
import org.jruby.parser.ParserConfiguration;
public class SourceRewriteTester extends TestSuite {
private static final String testRegexp = "^##!(.*)\\s*(\\w*)*$";
private static final String resultRegexp = "^##=.*$";
// replace with an enum as soon as we can use 1.5
private static class MatcherState {
public static final int SKIP = 0;
public static final int IN_SOURCE = 1;
public static final int IN_EXPECTED_RESULT= 2;
}
public static String generateSource(String original) {
if (original.equals("")) return original;
StringWriter outputWriter = new StringWriter();
ReWriteVisitor visitor = new ReWriteVisitor(outputWriter, original);
ParserConfiguration configuration = new ParserConfiguration(0, true, false);
new Parser(null).parseRewriter("", new ByteArrayInputStream(original.getBytes()), configuration).accept(visitor);
visitor.flushStream();
return outputWriter.getBuffer().toString();
}
private static BufferedReader createReader(String file) throws FileNotFoundException {
return new BufferedReader(new FileReader(file));
}
public static Test suite() throws Exception {
BufferedReader in = createReader("test/org/jruby/ast/visitor/rewriter/TestReWriteVisitorSource.txt");
ArrayList testCases = createTests(in);
return createSuite(testCases);
}
private static TestSuite createSuite(ArrayList testCases) {
TestSuite suite = new TestSuite();
Iterator it = testCases.iterator();
while (it.hasNext()) {
String source = null;
try {
SourceTestCase subject = (SourceTestCase) it.next();
source = subject.getSource();
subject.setGeneratedSource(generateSource(source));
suite.addTest(subject);
} catch (Throwable e) {
System.out.println("Problem setting up test: " + e);
e.printStackTrace();
System.out.println("Source: " + source);
}
}
return suite;
}
private static boolean lineMatchesBeginOfTest(String line) {
return createMatcherFromString(testRegexp, line).find();
}
private static Matcher createMatcherFromString(String pattern, String line) {
return Pattern.compile(pattern).matcher(line);
}
private static String getNameOfTest(String line) {
Matcher matcherBeginOfTest = createMatcherFromString(testRegexp, line);
if(matcherBeginOfTest.find())
return matcherBeginOfTest.group(1);
else
return "Not Named";
}
private static boolean lineMatchesBeginOfResult(String line) {
return createMatcherFromString(resultRegexp, line).find();
}
private static ArrayList createTests(BufferedReader inputReader) throws Exception {
String line;
SourceTestCase tc = null;
int matcherState = MatcherState.SKIP;
ArrayList testCases = new ArrayList();
while ((line = inputReader.readLine()) != null){
if(lineMatchesBeginOfTest(line)) {
matcherState = MatcherState.IN_SOURCE;
tc = new SourceTestCase(getNameOfTest(line), true);
testCases.add(tc);
continue;
} else if (lineMatchesBeginOfResult(line)) {
matcherState = MatcherState.IN_EXPECTED_RESULT;
continue;
}
switch(matcherState) {
case MatcherState.IN_SOURCE:
tc.appendLineToSource(line);
break;
case MatcherState.IN_EXPECTED_RESULT:
tc.appendLineToExpectedResult(line);
break;
case MatcherState.SKIP:
break;
}
}
return testCases;
}
}