de.odysseus.staxon.json.stream.jackson.JacksonStreamSourceTest.java Source code

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/*
 * Copyright 2011, 2012 Odysseus Software GmbH
 *
 * 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 de.odysseus.staxon.json.stream.jackson;

import java.io.IOException;
import java.io.StringReader;
import java.math.BigDecimal;

import junit.framework.Assert;

import org.junit.Test;

import com.fasterxml.jackson.core.JsonFactory;

import de.odysseus.staxon.json.stream.JsonStreamSource;
import de.odysseus.staxon.json.stream.JsonStreamToken;

public class JacksonStreamSourceTest {
    @Test
    public void testObjectValue() throws IOException {
        StringReader reader = new StringReader("{\"alice\":\"bob\"}");
        JacksonStreamSource source = new JacksonStreamSource(new JsonFactory().createParser(reader));

        Assert.assertEquals(JsonStreamToken.START_OBJECT, source.peek());
        source.startObject();

        Assert.assertEquals(JsonStreamToken.NAME, source.peek());
        Assert.assertEquals("alice", source.name());

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("bob", source.value().text);

        Assert.assertEquals(JsonStreamToken.END_OBJECT, source.peek());
        source.endObject();

        Assert.assertEquals(JsonStreamToken.NONE, source.peek());
        source.close();
    }

    @Test
    public void testArrayValue() throws IOException {
        StringReader reader = new StringReader("[\"bob\"]");
        JacksonStreamSource source = new JacksonStreamSource(new JsonFactory().createParser(reader));

        Assert.assertEquals(JsonStreamToken.START_ARRAY, source.peek());
        source.startArray();

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("bob", source.value().text);

        Assert.assertEquals(JsonStreamToken.END_ARRAY, source.peek());
        source.endArray();

        Assert.assertEquals(JsonStreamToken.NONE, source.peek());
        source.close();
    }

    @Test
    public void testArray1() throws IOException {
        StringReader reader = new StringReader("{\"alice\":[\"bob\"]}");
        JacksonStreamSource source = new JacksonStreamSource(new JsonFactory().createParser(reader));

        Assert.assertEquals(JsonStreamToken.START_OBJECT, source.peek());
        source.startObject();

        Assert.assertEquals(JsonStreamToken.NAME, source.peek());
        Assert.assertEquals("alice", source.name());

        Assert.assertEquals(JsonStreamToken.START_ARRAY, source.peek());
        source.startArray();

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("bob", source.value().text);

        Assert.assertEquals(JsonStreamToken.END_ARRAY, source.peek());
        source.endArray();

        Assert.assertEquals(JsonStreamToken.END_OBJECT, source.peek());
        source.endObject();

        Assert.assertEquals(JsonStreamToken.NONE, source.peek());
        source.close();
    }

    @Test
    public void testArray2() throws IOException {
        StringReader reader = new StringReader("{\"alice\":{\"bob\":[\"edgar\",\"charlie\"]}}");
        JacksonStreamSource source = new JacksonStreamSource(new JsonFactory().createParser(reader));

        Assert.assertEquals(JsonStreamToken.START_OBJECT, source.peek());
        source.startObject();

        Assert.assertEquals(JsonStreamToken.NAME, source.peek());
        Assert.assertEquals("alice", source.name());

        Assert.assertEquals(JsonStreamToken.START_OBJECT, source.peek());
        source.startObject();

        Assert.assertEquals(JsonStreamToken.NAME, source.peek());
        Assert.assertEquals("bob", source.name());

        Assert.assertEquals(JsonStreamToken.START_ARRAY, source.peek());
        source.startArray();

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("edgar", source.value().text);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("charlie", source.value().text);

        Assert.assertEquals(JsonStreamToken.END_ARRAY, source.peek());
        source.endArray();

        Assert.assertEquals(JsonStreamToken.END_OBJECT, source.peek());
        source.endObject();

        Assert.assertEquals(JsonStreamToken.END_OBJECT, source.peek());
        source.endObject();

        Assert.assertEquals(JsonStreamToken.NONE, source.peek());
        source.close();
    }

    @Test
    public void testArray3() throws IOException {
        StringReader reader = new StringReader("{\"alice\":{\"edgar\":[\"bob\"],\"charlie\":[\"bob\"]}}");
        JacksonStreamSource source = new JacksonStreamSource(new JsonFactory().createParser(reader));

        Assert.assertEquals(JsonStreamToken.START_OBJECT, source.peek());
        source.startObject();

        Assert.assertEquals(JsonStreamToken.NAME, source.peek());
        Assert.assertEquals("alice", source.name());

        Assert.assertEquals(JsonStreamToken.START_OBJECT, source.peek());
        source.startObject();

        Assert.assertEquals(JsonStreamToken.NAME, source.peek());
        Assert.assertEquals("edgar", source.name());

        Assert.assertEquals(JsonStreamToken.START_ARRAY, source.peek());
        source.startArray();

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("bob", source.value().text);

        Assert.assertEquals(JsonStreamToken.END_ARRAY, source.peek());
        source.endArray();

        Assert.assertEquals(JsonStreamToken.NAME, source.peek());
        Assert.assertEquals("charlie", source.name());

        Assert.assertEquals(JsonStreamToken.START_ARRAY, source.peek());
        source.startArray();

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("bob", source.value().text);

        Assert.assertEquals(JsonStreamToken.END_ARRAY, source.peek());
        source.endArray();

        Assert.assertEquals(JsonStreamToken.END_OBJECT, source.peek());
        source.endObject();

        Assert.assertEquals(JsonStreamToken.END_OBJECT, source.peek());
        source.endObject();

        Assert.assertEquals(JsonStreamToken.NONE, source.peek());
        source.close();
    }

    @Test
    public void testString() throws IOException {
        StringReader reader = new StringReader("[\"\",\"abc\",\"\\b\\f\\n\\r\\t\",\"\\\"\",\"\\\\\",\"\\u001F\"]");
        JacksonStreamSource source = new JacksonStreamSource(new JsonFactory().createParser(reader));

        Assert.assertEquals(JsonStreamToken.START_ARRAY, source.peek());
        source.startArray();

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("", source.value().text);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("abc", source.value().text);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("\b\f\n\r\t", source.value().text);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("\"", source.value().text);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("\\", source.value().text);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("\u001F", source.value().text);

        Assert.assertEquals(JsonStreamToken.END_ARRAY, source.peek());
        source.endArray();

        Assert.assertEquals(JsonStreamToken.NONE, source.peek());
        source.close();
    }

    @Test
    public void testLiteralValues() throws IOException {
        StringReader reader = new StringReader("[true,false,null]");
        JacksonStreamSource source = new JacksonStreamSource(new JsonFactory().createParser(reader));
        JsonStreamSource.Value value = null;

        Assert.assertEquals(JsonStreamToken.START_ARRAY, source.peek());
        source.startArray();

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        value = source.value();
        Assert.assertEquals("true", value.text);
        Assert.assertEquals(Boolean.TRUE, value.data);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        value = source.value();
        Assert.assertEquals("false", value.text);
        Assert.assertEquals(Boolean.FALSE, value.data);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        value = source.value();
        Assert.assertNull(value.text);
        Assert.assertNull(value.data);

        Assert.assertEquals(JsonStreamToken.END_ARRAY, source.peek());
        source.endArray();

        Assert.assertEquals(JsonStreamToken.NONE, source.peek());
        source.close();
    }

    @Test
    public void testNumberValues() throws IOException {
        StringReader reader = new StringReader("[123,12e3,12E3,12.3,1.2e3,1.2E3]");
        JacksonStreamSource source = new JacksonStreamSource(new JsonFactory().createParser(reader));
        JsonStreamSource.Value value = null;

        Assert.assertEquals(JsonStreamToken.START_ARRAY, source.peek());
        source.startArray();

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        value = source.value();
        Assert.assertEquals("123", value.text);
        Assert.assertEquals(new Long("123"), value.data);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        value = source.value();
        Assert.assertEquals("12e3", value.text);
        Assert.assertEquals(new BigDecimal("12e3"), value.data);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        value = source.value();
        Assert.assertEquals("12E3", value.text);
        Assert.assertEquals(new BigDecimal("12E3"), value.data);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        value = source.value();
        Assert.assertEquals("12.3", value.text);
        Assert.assertEquals(new BigDecimal("12.3"), value.data);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        value = source.value();
        Assert.assertEquals("1.2e3", value.text);
        Assert.assertEquals(new BigDecimal("1.2e3"), value.data);

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        value = source.value();
        Assert.assertEquals("1.2E3", value.text);
        Assert.assertEquals(new BigDecimal("1.2E3"), value.data);

        Assert.assertEquals(JsonStreamToken.END_ARRAY, source.peek());
        source.endArray();

        Assert.assertEquals(JsonStreamToken.NONE, source.peek());
        source.close();
    }

    @Test(expected = IOException.class)
    public void testUnexpected() throws IOException {
        StringReader reader = new StringReader("\"alice\":\"bob\""); // missing document start/end
        JacksonStreamSource source = new JacksonStreamSource(new JsonFactory().createParser(reader));

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        source.value();
        source.peek();

        source.close();
    }

    @Test
    public void testWhitespace() throws IOException {
        StringReader reader = new StringReader("{\r  \"alice\" : \"bob\"\r\n}");
        JacksonStreamSource source = new JacksonStreamSource(new JsonFactory().createParser(reader));

        Assert.assertEquals(JsonStreamToken.START_OBJECT, source.peek());
        source.startObject();

        Assert.assertEquals(JsonStreamToken.NAME, source.peek());
        Assert.assertEquals("alice", source.name());

        Assert.assertEquals(JsonStreamToken.VALUE, source.peek());
        Assert.assertEquals("bob", source.value().text);

        Assert.assertEquals(JsonStreamToken.END_OBJECT, source.peek());
        source.endObject();

        Assert.assertEquals(JsonStreamToken.NONE, source.peek());
        source.close();
    }
}