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A library for unit-tests to check the dependencies between classes.

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package de.spricom.dessert.assertions;

/*-
 * #%L
 * Dessert Dependency Assertion Library for Java
 * %%
 * Copyright (C) 2017 - 2023 Hans Jörg Heßmann
 * %%
 * 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.
 * #L%
 */

import de.spricom.dessert.slicing.Clazz;

import java.util.Collection;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;

/**
 * The default implementation used by dessert-core.
 */
public class DefaultIllegalDependenciesRenderer implements IllegalDependenciesRenderer {
    @Override
    public String render(IllegalDependencies violations) {
        Map> dependencyViolations = violations.getViolations();
        StringBuilder sb = new StringBuilder("Illegal Dependencies:\n");
        for (Clazz clazz : sort(dependencyViolations.keySet())) {
            sb.append(clazz.getName()).append("\n");
            for (Clazz dep : dependencyViolations.get(clazz)) {
                sb.append(" -> ").append(dep.getName()).append("\n");
            }
        }
        return sb.toString();
    }

    private Collection sort(Set entries) {
        TreeMap sorted = new TreeMap();
        for (Clazz entry : entries) {
            sorted.put(entry.getName(), entry);
        }
        return sorted.values();
    }
}