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 * accompanied this code).
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package com.sun.scenario.effect.compiler.parser;

import com.sun.scenario.effect.compiler.JSLParser;
import com.sun.scenario.effect.compiler.model.BinaryOpType;
import com.sun.scenario.effect.compiler.model.Type;
import com.sun.scenario.effect.compiler.tree.BinaryExpr;
import org.antlr.runtime.RecognitionException;
import org.junit.Test;

import static org.junit.Assert.*;

public class RelationalExprTest extends ParserBase {

    @Test
    public void oneLtEq() throws Exception {
        BinaryExpr tree = parseTreeFor("foo <= 3");
        assertEquals(tree.getOp(), BinaryOpType.LTEQ);
    }

    @Test
    public void oneGtEq() throws Exception {
        BinaryExpr tree = parseTreeFor("foo >= 3");
        assertEquals(tree.getOp(), BinaryOpType.GTEQ);
    }

    @Test
    public void oneLt() throws Exception {
        BinaryExpr tree = parseTreeFor("foo < 3");
        assertEquals(tree.getOp(), BinaryOpType.LT);
    }

    @Test
    public void oneGt() throws Exception {
        BinaryExpr tree = parseTreeFor("foo > 3");
        assertEquals(tree.getOp(), BinaryOpType.GT);
    }

    @Test(expected = RecognitionException.class)
    public void notARelationalExpression() throws Exception {
        parseTreeFor("foo @ 3");
    }

    private BinaryExpr parseTreeFor(String text) throws RecognitionException {
        JSLParser parser = parserOver(text);
        parser.getSymbolTable().declareVariable("foo", Type.INT, null);
        return (BinaryExpr)parser.relational_expression();
    }
}
