AlmostVerificationMode.java

/**
 * Copyright 2008 the original author or authors.
 *
 * 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 net.sf.katta.testutil.mockito;

import java.util.List;

import org.apache.log4j.Logger;
import org.mockito.exceptions.Reporter;
import org.mockito.internal.debugging.Location;
import org.mockito.internal.invocation.Invocation;
import org.mockito.internal.invocation.InvocationMatcher;
import org.mockito.internal.invocation.InvocationsFinder;
import org.mockito.internal.verification.api.VerificationData;
import org.mockito.internal.verification.api.VerificationMode;
import org.mockito.internal.verification.checkers.AtLeastDiscrepancy;

/**
 * Like {@link Mockito#times(int)} but with allowing a aberration.
 */
public class AlmostVerificationMode implements VerificationMode {

  private static final Logger LOG = Logger.getLogger(AlmostVerificationMode.class);

  private final int _wantedNumberOfInvocations;
  private final int _aberration;

  public AlmostVerificationMode(int wantedNumberOfInvocations, int aberration) {
    _wantedNumberOfInvocations = wantedNumberOfInvocations;
    _aberration = aberration;
  }

  @Override
  public void verify(VerificationData data) {
    List<Invocation> invocations = data.getAllInvocations();
    InvocationMatcher wanted = data.getWanted();

    Reporter reporter = new Reporter();
    InvocationsFinder finder = new InvocationsFinder();
    List<Invocation> found = finder.findInvocations(invocations, wanted);
    int invocationCount = found.size();
    if (invocationCount != _wantedNumberOfInvocations) {
      LOG.warn("invocation count is " + invocationCount + " expected was " + _wantedNumberOfInvocations + " +-"
              + _aberration);
    }

    int minNumberOfInvocations = _wantedNumberOfInvocations - _aberration;
    if (invocationCount < minNumberOfInvocations) {
      Location lastLocation = finder.getLastLocation(invocations);
      reporter.tooLittleActualInvocations(new AtLeastDiscrepancy(minNumberOfInvocations, invocationCount), wanted,
              lastLocation);
    }
    int maxNumberOfInvocations = _wantedNumberOfInvocations + _aberration;
    if (invocationCount > maxNumberOfInvocations) {
      reporter.wantedAtMostX(maxNumberOfInvocations, invocationCount);
    }
  }

}