/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
*
*/
package org.mozilla.javascript.tests;
import static org.junit.Assert.assertEquals;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.mozilla.javascript.CompilerEnvirons;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.ErrorReporter;
import org.mozilla.javascript.Parser;
import org.mozilla.javascript.ScriptableObject;
import org.mozilla.javascript.Undefined;
import org.mozilla.javascript.ast.AstRoot;
/**
* @author André Bargull
*
*/
public class Bug687669Test {
private Context cx;
private ScriptableObject scope;
@Before
public void setUp() {
cx = Context.enter();
cx.setLanguageVersion(Context.VERSION_1_8);
scope = cx.initStandardObjects();
}
@After
public void tearDown() {
Context.exit();
}
private Object eval(CharSequence cs) {
return cx.evaluateString(scope, cs.toString(), "<eval>", 1, null);
}
private AstRoot parse(CharSequence cs) {
CompilerEnvirons compilerEnv = new CompilerEnvirons();
compilerEnv.initFromContext(cx);
ErrorReporter compilationErrorReporter = compilerEnv.getErrorReporter();
Parser p = new Parser(compilerEnv, compilationErrorReporter);
return p.parse(cs.toString(), "<eval>", 1);
}
private String toSource(CharSequence cs) {
return parse(cs).toSource();
}
@Test
public void testEval() {
// test EmptyStatement node doesn't infer with return values (in
// contrast to wrapping EmptyExpression into an ExpressionStatement)
assertEquals(1d, eval("1;;;;"));
assertEquals(Undefined.instance, eval("(function(){1;;;;})()"));
assertEquals(1d, eval("(function(){return 1;;;;})()"));
}
@Test
public void testToSource() {
assertEquals("L1:\n ;\n", toSource("L1:;"));
assertEquals("L1:\n ;\na = 1;\n", toSource("L1:; a=1;"));
assertEquals("if (1) \n ;\n", toSource("if(1);"));
assertEquals("if (1) \n ;\na = 1;\n", toSource("if(1); a=1;"));
assertEquals("if (1) \n a = 1;\n", toSource("if(1)a=1;"));
assertEquals("if (1) \n a = 1;\na = 1;\n", toSource("if(1)a=1; a=1;"));
assertEquals("if (1) \n ;\n;\n;\n;\n", toSource("if(1);;;;"));
}
}