com.cinnober.msgcodec.json.TypeScannerJsonParserTest.java Source code

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Here is the source code for com.cinnober.msgcodec.json.TypeScannerJsonParserTest.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 The MsgCodec Authors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.cinnober.msgcodec.json;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import java.io.IOException;
import org.junit.Test;
import static org.junit.Assert.*;

/**
 * 
 * @author mikael.brannstrom
 */
public class TypeScannerJsonParserTest {

    @Test
    public void test1() throws IOException {
        JsonParser p = new JsonFactory().createParser("{\"a\":1, \"$type\":\"x\", \"b\":1.1}");
        p.nextToken(); // START_OBJECT
        p.nextToken(); // FIELD_NAME
        TypeScannerJsonParser p2 = new TypeScannerJsonParser(p);
        assertEquals("x", p2.findType());

        assertNextField("a", p2);
        assertNextIntValue(1, p2);

        assertNextField("b", p2);
        assertNextFloatValue(1.1, p2);

        assertEquals(JsonToken.END_OBJECT, p2.nextToken());
        assertNull(p2.nextToken());
    }

    @Test
    public void test2() throws IOException {
        JsonParser p = new JsonFactory().createParser("{\"a\":1, \"b\":1.1, \"$type\":\"x\"}");
        p.nextToken(); // START_OBJECT
        p.nextToken(); // FIELD_NAME
        TypeScannerJsonParser p2 = new TypeScannerJsonParser(p);
        assertEquals("x", p2.findType());

        assertNextField("a", p2);
        assertNextIntValue(1, p2);

        assertNextField("b", p2);
        assertNextFloatValue(1.1, p2);

        assertEquals(JsonToken.END_OBJECT, p2.nextToken());
        assertNull(p2.nextToken());
    }

    private void assertNextField(String expFieldName, JsonParser p) throws IOException {
        assertEquals(JsonToken.FIELD_NAME, p.nextToken());
        assertEquals(expFieldName, p.getText());
    }

    private void assertNextIntValue(int exp, JsonParser p) throws IOException {
        assertEquals(JsonToken.VALUE_NUMBER_INT, p.nextToken());
        assertEquals(exp, p.getIntValue());
    }

    private void assertNextFloatValue(double exp, JsonParser p) throws IOException {
        assertEquals(JsonToken.VALUE_NUMBER_FLOAT, p.nextToken());
        assertEquals(exp, p.getDoubleValue(), 1e-4);
    }

    @Test
    public void testNested1() throws IOException {
        JsonParser p = new JsonFactory()
                .createParser("{\"a\":{\"c\":2, \"$type\":\"y\", \"d\":2.1}, \"$type\":\"x\", \"b\":1.1}");
        p.nextToken(); // START_OBJECT
        p.nextToken(); // FIELD_NAME
        TypeScannerJsonParser p2 = new TypeScannerJsonParser(p);
        assertEquals("x", p2.findType());

        assertNextField("a", p2);
        assertEquals(JsonToken.START_OBJECT, p2.nextToken());
        // start nested object
        p2.nextToken(); // FIELD_NAME
        assertEquals("y", p2.findType());
        assertNextField("c", p2);
        assertNextIntValue(2, p2);
        assertNextField("d", p2);
        assertNextFloatValue(2.1, p2);
        assertEquals(JsonToken.END_OBJECT, p2.nextToken());
        // end nested object

        assertNextField("b", p2);
        assertNextFloatValue(1.1, p2);

        assertEquals(JsonToken.END_OBJECT, p2.nextToken());
        assertNull(p2.nextToken());
    }

    @Test
    public void testNested2() throws IOException {
        JsonParser p = new JsonFactory()
                .createParser("{\"a\":{\"c\":2, \"d\":2.1, \"$type\":\"y\"}, \"$type\":\"x\", \"b\":1.1}");
        p.nextToken(); // START_OBJECT
        p.nextToken(); // FIELD_NAME
        TypeScannerJsonParser p2 = new TypeScannerJsonParser(p);
        assertEquals("x", p2.findType());

        assertNextField("a", p2);
        assertEquals(JsonToken.START_OBJECT, p2.nextToken());
        // start nested object
        p2.nextToken(); // FIELD_NAME
        assertEquals("y", p2.findType());
        assertNextField("c", p2);
        assertNextIntValue(2, p2);
        assertNextField("d", p2);
        assertNextFloatValue(2.1, p2);
        assertEquals(JsonToken.END_OBJECT, p2.nextToken());
        // end nested object

        assertNextField("b", p2);
        assertNextFloatValue(1.1, p2);

        assertEquals(JsonToken.END_OBJECT, p2.nextToken());
        assertNull(p2.nextToken());
    }

    @Test
    public void testNested3() throws IOException {
        JsonParser p = new JsonFactory()
                .createParser("{\"a\":{\"$type\":\"y\", \"c\":2, \"d\":2.1}, \"$type\":\"x\", \"b\":1.1}");
        p.nextToken(); // START_OBJECT
        p.nextToken(); // FIELD_NAME
        TypeScannerJsonParser p2 = new TypeScannerJsonParser(p);
        assertEquals("x", p2.findType());

        assertNextField("a", p2);
        assertEquals(JsonToken.START_OBJECT, p2.nextToken());
        // start nested object
        p2.nextToken(); // FIELD_NAME
        assertEquals("y", p2.findType());
        assertNextField("c", p2);
        assertNextIntValue(2, p2);
        assertNextField("d", p2);
        assertNextFloatValue(2.1, p2);
        assertEquals(JsonToken.END_OBJECT, p2.nextToken());
        // end nested object

        assertNextField("b", p2);
        assertNextFloatValue(1.1, p2);

        assertEquals(JsonToken.END_OBJECT, p2.nextToken());
        assertNull(p2.nextToken());
    }

}