private static void testValidExpression(double expected, String expression) {
try {
double result = CalculationEngineFactory.defaultEngine().calculate(expression);
assertEquals(expected, result);
} catch (CalculationException e) {
Assert.fail("Exception happened " + e);
}
}
private static void testInvalidExpression(String expression) {
try {
CalculationEngineFactory.defaultEngine().calculate(expression);
Assert.fail("Successfully evaluate " + expression);
} catch (CalculationException e) {
Log.d("Test", "Successfully fail");
}
}
@Test
public void testDivisionByZero3() {
try {
double result = CalculationEngineFactory.defaultEngine().calculate("(10-10)/(10-10)");
Assert.assertTrue(Double.isNaN(result));
} catch (CalculationException e) {
Log.d("Test", "Valid Failure");
}
}
@Test
public void testDivisionByZero2() {
try {
double result = CalculationEngineFactory.defaultEngine().calculate("1/(10-10)");
Assert.assertEquals(Double.POSITIVE_INFINITY, result);
} catch (CalculationException e) {
Log.d("Test", "Valid Failure");
}
}