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package org.python.jsr223;
import javax.script.ScriptEngine;
import javax.script.ScriptException;
import javax.script.ScriptEngineFactory;
import junit.framework.TestCase;
import java.io.StringReader;
import java.io.StringWriter;
public class ScriptEngineIOTest extends TestCase
{
ScriptEngineFactory pythonEngineFactory;
ScriptEngine pythonEngine;
public void setUp() throws ScriptException
{
pythonEngineFactory = new PyScriptEngineFactory();
pythonEngine = new PyScriptEngine(pythonEngineFactory);
}
public void testEvalString() throws ScriptException
{
assertNull(pythonEngine.eval("x = 5"));
assertEquals(Integer.valueOf(5), pythonEngine.eval("x"));
}
public void testReadline() throws ScriptException
{
final String testString = "Shazaam Batman!\n";
pythonEngine.getContext().setReader(new StringReader(testString));
assertNull(pythonEngine.eval("import sys"));
assertEquals(testString, pythonEngine.eval("sys.stdin.readline()"));
}
public void testReadlines() throws ScriptException
{
final String testString = "Holy Smokes Batman!\nBIF!\r\n\nKAPOW!!!\rTHE END.";
pythonEngine.getContext().setReader(new StringReader(testString));
assertNull(pythonEngine.eval("import sys"));
final Object o = pythonEngine.eval("''.join(sys.stdin.readlines())");
assertEquals("Holy Smokes Batman!\nBIF!\n\nKAPOW!!!\nTHE END.\n", o);
}
public void testWriter() throws ScriptException
{
final StringWriter sw = new StringWriter();
pythonEngine.getContext().setWriter(sw);
final String testString = "It is a wonderful world.";
assertNull(pythonEngine.eval("print '" + testString + "',"));
assertEquals(testString, sw.toString());
}
public void testErrorWriter() throws ScriptException
{
final StringWriter stdout = new StringWriter();
final StringWriter stderr = new StringWriter();
pythonEngine.getContext().setWriter(stdout);
pythonEngine.getContext().setErrorWriter(stderr);
final String testString1 = "It is a wonderful world.";
final String testString2 = "Stuff happens!";
assertNull(pythonEngine.eval("import sys"));
assertNull(pythonEngine.eval("sys.stdout.write('" + testString1 + "')"));
assertNull(pythonEngine.eval("sys.stderr.write('" + testString2 + "')"));
assertEquals(testString1, stdout.toString());
assertEquals(testString2, stderr.toString());
}
}
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