package org.jtwig.render.expression.calculator.operation.unary;
import com.google.common.base.Optional;
import org.jtwig.exceptions.CalculationException;
import org.jtwig.model.expression.Expression;
import org.jtwig.model.expression.UnaryOperationExpression;
import org.jtwig.model.position.Position;
import org.jtwig.render.RenderRequest;
import org.jtwig.render.expression.calculator.operation.unary.calculators.UnaryOperationCalculator;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import static org.hamcrest.Matchers.containsString;
import static org.junit.Assert.assertSame;
import static org.mockito.Mockito.*;
public class UnaryOperationServiceTest {
private final UnaryOperationCalculatorSelector unaryOperationCalculatorSelector = mock(UnaryOperationCalculatorSelector.class);
private UnaryOperationService underTest = new UnaryOperationService(unaryOperationCalculatorSelector);
@Rule
public ExpectedException expectedException = ExpectedException.none();
@Test
public void calculateNotPresent() throws Exception {
RenderRequest request = mock(RenderRequest.class, RETURNS_DEEP_STUBS);
UnaryOperationExpression unaryOperationExpression = mock(UnaryOperationExpression.class);
UnaryOperator unaryOperator = mock(UnaryOperator.class);
when(unaryOperationExpression.getOperator()).thenReturn(unaryOperator);
when(unaryOperationCalculatorSelector.calculatorFor(unaryOperator)).thenReturn(Optional.<UnaryOperationCalculator>absent());
expectedException.expect(CalculationException.class);
expectedException.expectMessage(containsString(String.format("No calculator for operator %s found", unaryOperator.getClass())));
underTest.calculate(request, unaryOperationExpression);
}
@Test
public void calculatePresent() throws Exception {
Object expected = new Object();
RenderRequest request = mock(RenderRequest.class, RETURNS_DEEP_STUBS);
UnaryOperationExpression unaryOperationExpression = mock(UnaryOperationExpression.class);
UnaryOperator unaryOperator = mock(UnaryOperator.class);
UnaryOperationCalculator unaryOperationCalculator = mock(UnaryOperationCalculator.class);
Position position = mock(Position.class);
Expression operand = mock(Expression.class);
when(unaryOperationExpression.getOperator()).thenReturn(unaryOperator);
when(unaryOperationExpression.getPosition()).thenReturn(position);
when(unaryOperationExpression.getOperand()).thenReturn(operand);
when(unaryOperationCalculatorSelector.calculatorFor(unaryOperator)).thenReturn(Optional.of(unaryOperationCalculator));
when(unaryOperationCalculator.calculate(request, position, operand)).thenReturn(expected);
Object result = underTest.calculate(request, unaryOperationExpression);
assertSame(expected, result);
}
}