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

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Here is the source code for com.spotify.hamcrest.jackson.IsJsonArray.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 static org.hamcrest.Matchers.is;
import static org.hamcrest.core.IsAnything.anything;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.JsonNodeType;
import com.google.common.collect.ImmutableList;
import java.util.Collection;
import java.util.Objects;
import org.hamcrest.Description;
import org.hamcrest.Matcher;

public class IsJsonArray extends AbstractJsonNodeMatcher<ArrayNode> {

    private final Matcher<? super Collection<JsonNode>> elementsMatcher;

    private IsJsonArray(Matcher<? super Collection<JsonNode>> elementsMatcher) {
        super(JsonNodeType.ARRAY);
        this.elementsMatcher = Objects.requireNonNull(elementsMatcher);
    }

    public static Matcher<JsonNode> jsonArray() {
        return new IsJsonArray(is(anything()));
    }

    public static Matcher<JsonNode> jsonArray(Matcher<? super Collection<JsonNode>> elementsMatcher) {
        return new IsJsonArray(elementsMatcher);
    }

    @Override
    protected boolean matchesNode(ArrayNode node, Description mismatchDescription) {
        final ImmutableList<JsonNode> elements = ImmutableList.copyOf(node);
        if (elementsMatcher.matches(elements)) {
            return true;
        } else {
            mismatchDescription.appendText("was an array node whose elements ");
            elementsMatcher.describeMismatch(elements, mismatchDescription);
            return false;
        }
    }

    @Override
    public void describeTo(Description description) {
        description.appendText("an array node whose elements ").appendDescriptionOf(elementsMatcher);
    }
}