edu.ucsb.cs56.pconrad.parsing.evaluator

Class EvaluatorTest

java.lang.Object

edu.ucsb.cs56.pconrad.parsing.evaluator.EvaluatorTest

public class EvaluatorTest
extends Object

Tests the evaluator; that is, the code that takes an AST and evaluates it down to an integer.

Field Summary

Fields

Modifier and Type	Field and Description
org.junit.rules.ExpectedException	thrown

Constructor Summary

Constructors

Constructor and Description
EvaluatorTest()

Method Summary

Modifier and Type	Method and Description
static int	evaluate(AST ast) Convenience method to evaluate the given ast to an integer
static int	evaluateNoException(AST ast) Similar to evaluate, except an EvaluatorException triggers a test failure.
void	testDivDirectZero()
void	testDivNonZero()
void	testLiteral()
void	testPlus()
void	testUnaryMinusLiteral()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

thrown

public org.junit.rules.ExpectedException thrown

Constructor Detail

EvaluatorTest

public EvaluatorTest()

Method Detail

evaluate

public static int evaluate(AST ast)
                    throws EvaluatorException

Convenience method to evaluate the given ast to an integer

Parameters:

ast - the AST to be evaluated

Returns:

the value of the AST after evaluation

Throws:

EvaluatorException - if the AST cannot be evaluated

evaluateNoException

public static int evaluateNoException(AST ast)

Similar to evaluate, except an EvaluatorException triggers a test failure. This lifts the burden of annotating tests which are supposed to pass with the otherwise superfluous EvaluatorException.

Parameters:

ast - The AST to be evaluated

Returns:

The value of the expression after it is evaluated

testLiteral

public void testLiteral()

testPlus

public void testPlus()

testDivNonZero

public void testDivNonZero()

testUnaryMinusLiteral

public void testUnaryMinusLiteral()

testDivDirectZero

public void testDivDirectZero()
                       throws EvaluatorException

Throws:

EvaluatorException