JSONUtilTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
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package org.apache.felix.configurator.impl.json;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.io.Writer;
import java.net.URL;
import java.util.List;

import javax.json.JsonObject;

import org.apache.felix.configurator.impl.TypeConverter;
import org.apache.felix.configurator.impl.model.ConfigurationFile;
import org.junit.Test;

public class JSONUtilTest {

    /** Read the data from that name */
    public static String readJSON(final String name) throws Exception {

        try ( final Reader reader = new InputStreamReader(JSONUtilTest.class.getResourceAsStream("/" + name), "UTF-8");
              final Writer writer = new StringWriter()) {

            final char[] buf = new char[2048];
            int len = 0;
            while ((len = reader.read(buf)) > 0) {
                writer.write(buf, 0, len);
            }

            return writer.toString();
        }
    }

    @Test public void testReadJSON() throws Exception {
        final ConfigurationFile cg = JSONUtil.readJSON(new TypeConverter(null),
                "a", new URL("http://a"), 1, readJSON("json/valid.json"));
        assertNotNull(cg);
        assertEquals(2, cg.getConfigurations().size());
    }

    @SuppressWarnings("unchecked")
    @Test public void testTypes() throws Exception {
        final JsonObject config = JSONUtil.parseJSON("a", JSONUtilTest.readJSON("json/simple-types.json"));
        final JsonObject properties = (JsonObject)config.get("config");

        assertTrue(JSONUtil.getValue(properties, "string") instanceof String);
        assertTrue(JSONUtil.getValue(properties, "boolean") instanceof Boolean);
        assertTrue(JSONUtil.getValue(properties, "number") instanceof Long);
        assertTrue(JSONUtil.getValue(properties, "float") instanceof Double);

        // arrays
        assertTrue(JSONUtil.getValue(properties, "string.array") instanceof List<?>);
        assertTrue(((List<Object>)JSONUtil.getValue(properties, "string.array")).get(0) instanceof String);
        assertTrue(((List<Object>)JSONUtil.getValue(properties, "string.array")).get(1) instanceof String);

        assertTrue((List<Object>)JSONUtil.getValue(properties, "boolean.array") instanceof List<?>);
        assertTrue(((List<Object>)JSONUtil.getValue(properties, "boolean.array")).get(0) instanceof Boolean);
        assertTrue(((List<Object>)JSONUtil.getValue(properties, "boolean.array")).get(1) instanceof Boolean);

        assertTrue((List<Object>)JSONUtil.getValue(properties, "number.array") instanceof List<?>);
        assertTrue(((List<Object>)JSONUtil.getValue(properties, "number.array")).get(0) instanceof Long);
        assertTrue(((List<Object>)JSONUtil.getValue(properties, "number.array")).get(1) instanceof Long);

        assertTrue((List<Object>)JSONUtil.getValue(properties, "float.array") instanceof List<?>);
        assertTrue(((List<Object>)JSONUtil.getValue(properties, "float.array")).get(0) instanceof Double);
        assertTrue(((List<Object>)JSONUtil.getValue(properties, "float.array")).get(1) instanceof Double);
    }
}