SimpleExpressionEvaluatorTest.java

/*
 * Copyright (C) 2012 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package interactivespaces.evaluation;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import org.junit.Before;
import org.junit.Test;

/**
 * Test for the {@link SimpleExpressionEvaluator}.
 *
 * @author Keith M. Hughes
 */
public class SimpleExpressionEvaluatorTest {

  private static final String NAME_FIRST = "Joan";
  private static final String TODAY_DATE = "1/2/2005";

  private EvaluationEnvironment environment;

  private SimpleExpressionEvaluator evaluator;

  @Before
  public void setUp() {
    environment = mock(EvaluationEnvironment.class);
    when(environment.lookupVariableValue(eq("today"))).thenReturn(TODAY_DATE);
    when(environment.lookupVariableValue(eq("nameFirst"))).thenReturn(NAME_FIRST);
    when(environment.lookupVariableValue(eq("one"))).thenReturn("1");

    evaluator = new SimpleExpressionEvaluator();
    evaluator.setEvaluationEnvironment(environment);
  }

  @Test
  public void testSingleExistsSimple() {
    assertEquals(evaluator.evaluateStringExpression("${today}"), TODAY_DATE);
  }

  @Test
  public void leExistsEmbedded() {
    assertEquals(evaluator.evaluateStringExpression("Foo ${today} bar"), "Foo " + TODAY_DATE
        + " bar");
  }

  @Test
  public void testSingleExistsStart() {
    assertEquals(evaluator.evaluateStringExpression("${today} bar"), TODAY_DATE + " bar");
  }

  @Test
  public void testSingleExistsEndsd() {
    assertEquals(evaluator.evaluateStringExpression("Foo ${today}"), "Foo " + TODAY_DATE);
  }

  @Test
  public void testDouble() {
    assertEquals(evaluator.evaluateStringExpression("${nameFirst} Foo ${today}"), NAME_FIRST
        + " Foo " + TODAY_DATE);
  }

  @Test
  public void testMissingSingle() {
    assertEquals(evaluator.evaluateStringExpression("${nameLast}"), "${nameLast}");
  }

  @Test
  public void testSingleError() {
    try {
      evaluator.evaluateStringExpression("${nameFirst");
      fail();
    } catch (EvaluationInteractiveSpacesException e) {

    }
  }

  @Test
  public void testDoubleOneMissing() {
    assertEquals(evaluator.evaluateStringExpression("${nameLast} Foo ${today}"), "${nameLast} Foo "
        + TODAY_DATE);
  }

  @Test
  public void testDoubleError() {
    assertEquals(evaluator.evaluateStringExpression("${nameFirst Foo ${today}"),
        "${nameFirst Foo ${today}");
  }
}