com.spotify.hamcrest.jackson.AbstractJsonNodeMatcher.java Source code

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Here is the source code for com.spotify.hamcrest.jackson.AbstractJsonNodeMatcher.java

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/*-
 * -\-\-
 * hamcrest-jackson
 * --
 * Copyright (C) 2016 Spotify AB
 * --
 * 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 com.spotify.hamcrest.jackson;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.JsonNodeType;
import com.spotify.hamcrest.util.LanguageUtils;
import java.util.Objects;
import org.hamcrest.Description;
import org.hamcrest.TypeSafeDiagnosingMatcher;

public abstract class AbstractJsonNodeMatcher<A extends JsonNode> extends TypeSafeDiagnosingMatcher<JsonNode> {

    private final JsonNodeType type;

    AbstractJsonNodeMatcher(final JsonNodeType type) {
        super(JsonNode.class);
        this.type = Objects.requireNonNull(type);
    }

    @Override
    protected boolean matchesSafely(JsonNode item, Description mismatchDescription) {
        if (item.getNodeType() == type) {
            @SuppressWarnings("unchecked")
            final A node = (A) item;

            return matchesNode(node, mismatchDescription);
        } else {
            mismatchDescription.appendText("was not ")
                    .appendText(LanguageUtils.addArticle(type.name().toLowerCase())).appendText(" node, but ")
                    .appendText(LanguageUtils.addArticle(item.getNodeType().name().toLowerCase()))
                    .appendText(" node");
            return false;
        }
    }

    protected abstract boolean matchesNode(A node, Description mismatchDescription);
}