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1
3 package test.jmock.examples.calculator.expression;
4
5
6 import org.jmock.examples.calculator.CalculatorException;
7 import org.jmock.examples.calculator.Expression;
8 import org.jmock.examples.calculator.SimpleEnvironment;
9 import org.jmock.examples.calculator.expression.Division;
10
11
12 public class DivisionTest extends AbstractBinaryOperatorTest
13 {
14
15 public void testDividesLeftSubexpressionByRightSubexpression() throws Exception  {
16 runOperatorTest();
17 }
18
19 public void testThrowsExceptionOnDivideByZero() throws Exception {
20 Expression expression = makeExpression(1, 0);
21
22 try {
23 expression.evaluate(new SimpleEnvironment());
24 fail("expected CalculatorException on divide by zero");
25 }
26 catch (CalculatorException ex) {
27 assertTrue("error should contain 'divide by zero'",
28 ex.getMessage().indexOf("divide by zero") >= 0);
29 }
30 }
31
32 protected double expectedValue( double left, double right ) {
33 return left / right;
34 }
35
36 protected Expression makeExpression( Expression left, Expression right ) {
37 return new Division(left, right);
38 }
39 }
40 |
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