/*
Copyright 2011. Thomas F. Morris
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
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in the documentation and/or other materials provided with the
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* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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*/
package com.google.refine.tests.grel;
import java.util.Properties;
import org.slf4j.LoggerFactory;
import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;
import com.google.refine.expr.EvalError;
import com.google.refine.expr.Evaluable;
import com.google.refine.expr.ExpressionUtils;
import com.google.refine.expr.MetaParser;
import com.google.refine.expr.ParsingException;
import com.google.refine.model.Project;
import com.google.refine.tests.RefineTest;
public class GrelTests extends RefineTest {
Project project;
Properties bindings;
@Override
@BeforeTest
public void init() {
logger = LoggerFactory.getLogger(this.getClass());
}
@BeforeMethod
public void SetUp() {
project = new Project();
bindings = ExpressionUtils.createBindings(project);
}
@AfterMethod
public void TearDown() {
project = null;
bindings = null;
}
// -----------------tests------------
@Test
public void testInvalidSyntax() {
String tests[] = {
"",
"1-1-",
"2**3",
// "2^3" // TODO: Should this generate an error?
};
for (String test : tests) {
try{
MetaParser.parse("grel:"+test);
} catch (ParsingException e) {
// Test succeeded
continue;
}
Assert.fail("Expression failed to generate parse syntax error: " + test);
}
}
@Test
public void testEvalError() {
String tests[] = {
// "1=1", // TODO: Throws NullPointerException
"a.value",
};
for (String test : tests) {
try {
Evaluable eval = MetaParser.parse("grel:" + test);
Object result = eval.evaluate(bindings);
Assert.assertTrue(result instanceof EvalError );
} catch (ParsingException e) {
Assert.fail("Unexpected parse failure: " + test);
}
}
}
@Test
public void testMath() throws ParsingException {
String tests[][] = {
{ "1", "1" },
{ "1 + 1", "2" },
{ "1 + 1 + 1", "3" },
{ "1-1-1", "-1" },
{ "1-2-3", "-4" },
{ "1-(2-3)", "2" },
{ "2*3", "6" },
{ "3%2", "1" },
{ "3/2", "1" },
{ "3.0/2", "1.5" },
{ "1==1", "true" },
{ "1==2", "false" },
{ "1>2", "false" },
{ "1<2", "true" },
{ "1>1", "false" },
{ "1>=1", "true" },
{ "1<=2", "true" },
{ "2<=2", "true" },
{ "3<=2", "false" },
// { "", "" },
};
for (String[] test : tests) {
parseEval(bindings, test);
}
}
@Test
public void testPI() throws ParsingException {
String test[] = { "PI", "3.141592653589793" };
parseEval(bindings, test);
}
@Test
public void testString() throws ParsingException {
String tests[][] = {
{ "1", "1" },
{ "1 + 1", "2" },
{ "1 + 1 + 1", "3" },
{ "1-1-1", "-1" },
{ "1-2-3", "-4" },
{ "1-(2-3)", "2" },
{ "2*3", "6" },
{ "3%2", "1" },
{ "3/2", "1" },
{ "3.0/2", "1.5" },
{ "1", "1" },
};
for (String[] test : tests) {
parseEval(bindings, test);
}
}
private void parseEval(Properties bindings, String[] test)
throws ParsingException {
Evaluable eval = MetaParser.parse("grel:" + test[0]);
Object result = eval.evaluate(bindings);
Assert.assertEquals(result.toString(), test[1],
"Wrong result for expression: "+test[0]);
}
}