com.collaborne.jsonschema.generator.pojo.PojoGeneratorTest.java Source code

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Here is the source code for com.collaborne.jsonschema.generator.pojo.PojoGeneratorTest.java

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/**
 * Copyright (C) 2015 Collaborne B.V. (opensource@collaborne.com)
 *
 * 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.collaborne.jsonschema.generator.pojo;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;

import java.io.IOException;
import java.io.StringReader;
import java.net.URI;
import java.util.UUID;
import java.util.concurrent.atomic.AtomicBoolean;

import org.junit.Before;
import org.junit.Test;

import com.collaborne.jsonschema.generator.CodeGenerationException;
import com.collaborne.jsonschema.generator.java.ClassName;
import com.collaborne.jsonschema.generator.model.Mapping;
import com.fasterxml.jackson.databind.JsonNode;
import com.github.fge.jackson.JsonNodeReader;
import com.github.fge.jsonschema.core.load.SchemaLoader;
import com.github.fge.jsonschema.core.tree.SchemaTree;

public class PojoGeneratorTest {
    private static class TestClass {
        /* Nothing */
    }

    private JsonNodeReader jsonNodeReader;
    private SchemaLoader schemaLoader;

    @Before
    public void setUp() {
        jsonNodeReader = new JsonNodeReader();
        schemaLoader = new SchemaLoader();
    }

    @Test
    public void generateInternalPrimitiveTypeReturnsPrimitiveTypeWithoutGeneration()
            throws CodeGenerationException, IOException {
        JsonNode schemaNode = jsonNodeReader.fromReader(new StringReader("{\"type\": \"string\"}"));
        SchemaTree schema = schemaLoader.load(schemaNode);
        Mapping mapping = new Mapping(URI.create("http://example.com/type.json#"), ClassName.create(Integer.TYPE));
        final AtomicBoolean writeSourceCalled = new AtomicBoolean();
        PojoGenerator generator = new PojoGenerator(null, null, null) {
            @Override
            protected void writeSource(URI type, ClassName className, Buffer buffer) throws IOException {
                writeSourceCalled.set(true);
            }
        };

        ClassName className = generator.generateInternal(mapping.getTarget(), schema, mapping);
        assertEquals(mapping.getClassName(), className);
        assertFalse(writeSourceCalled.get());
    }

    @Test
    public void generateInternalExistingTypeReturnsExistingTypeWithoutGeneration()
            throws CodeGenerationException, IOException {
        JsonNode schemaNode = jsonNodeReader.fromReader(new StringReader("{\"type\": \"string\"}"));
        SchemaTree schema = schemaLoader.load(schemaNode);
        Mapping mapping = new Mapping(URI.create("http://example.com/type.json#"),
                ClassName.create(TestClass.class));
        final AtomicBoolean writeSourceCalled = new AtomicBoolean();
        PojoGenerator generator = new PojoGenerator(null, null, null) {
            @Override
            protected void writeSource(URI type, ClassName className, Buffer buffer) throws IOException {
                writeSourceCalled.set(true);
            }
        };

        ClassName className = generator.generateInternal(mapping.getTarget(), schema, mapping);
        assertEquals(mapping.getClassName(), className);
        assertFalse(writeSourceCalled.get());
    }

    @Test
    public void generateMappingForTypeSetsMappingTargetToType() {
        URI type = URI.create("http://example.com/#/" + UUID.randomUUID().toString());
        PojoGenerator generator = new PojoGenerator(null, null, null);
        Mapping mapping = generator.generateMapping(type);
        assertEquals(type, mapping.getTarget());
    }

    @Test
    public void generateMappingUsesDefaultPackageFeature() {
        URI type = URI.create("http://example.com/#/" + UUID.randomUUID().toString());
        PojoGenerator generator = new PojoGenerator(null, null, null);
        String packageName = "some.package" + UUID.randomUUID().toString();
        generator.setFeature(PojoGenerator.FEATURE_DEFAULT_PACKAGE_NAME, packageName);
        Mapping mapping = generator.generateMapping(type);
        assertEquals(packageName, mapping.getClassName().getPackageName());
    }

    @Test
    public void getSchemaTypeReturnsTypeKeyword() throws IOException, CodeGenerationException {
        URI type = URI.create("http://example.com/#");
        PojoGenerator generator = new PojoGenerator(null, null, null);

        JsonNode schemaNode = jsonNodeReader.fromReader(new StringReader("{\"type\": \"string\"}"));
        SchemaTree schema = schemaLoader.load(schemaNode);
        assertEquals("string", generator.getSchemaType(type, schema));
    }

    @Test
    public void getSchemaTypeReturnsObjectForEmptySchema() throws IOException, CodeGenerationException {
        URI type = URI.create("http://example.com/#");
        PojoGenerator generator = new PojoGenerator(null, null, null);

        JsonNode schemaNode = jsonNodeReader.fromReader(new StringReader("{}"));
        SchemaTree schema = schemaLoader.load(schemaNode);
        assertEquals("object", generator.getSchemaType(type, schema));
    }

    @Test
    public void getSchemaTypeReturnsAllOf() throws IOException, CodeGenerationException {
        URI type = URI.create("http://example.com/#");
        PojoGenerator generator = new PojoGenerator(null, null, null);

        JsonNode schemaNode = jsonNodeReader.fromReader(new StringReader("{\"allOf\": []}"));
        SchemaTree schema = schemaLoader.load(schemaNode);
        assertEquals("allOf", generator.getSchemaType(type, schema));
    }

    @Test
    public void getSchemaTypeReturnsAnyOf() throws IOException, CodeGenerationException {
        URI type = URI.create("http://example.com/#");
        PojoGenerator generator = new PojoGenerator(null, null, null);

        JsonNode schemaNode = jsonNodeReader.fromReader(new StringReader("{\"anyOf\": []}"));
        SchemaTree schema = schemaLoader.load(schemaNode);
        assertEquals("anyOf", generator.getSchemaType(type, schema));
    }

    @Test
    public void getSchemaTypeReturnsOneOf() throws IOException, CodeGenerationException {
        URI type = URI.create("http://example.com/#");
        PojoGenerator generator = new PojoGenerator(null, null, null);

        JsonNode schemaNode = jsonNodeReader.fromReader(new StringReader("{\"oneOf\": []}"));
        SchemaTree schema = schemaLoader.load(schemaNode);
        assertEquals("oneOf", generator.getSchemaType(type, schema));
    }

    @Test(expected = CodeGenerationException.class)
    public void getSchemaTypeThrowsCodeGenerationExceptionForMultipleAggregations()
            throws IOException, CodeGenerationException {
        URI type = URI.create("http://example.com/#");
        PojoGenerator generator = new PojoGenerator(null, null, null);

        JsonNode schemaNode = jsonNodeReader
                .fromReader(new StringReader("{\"allOf\": [], \"anyOf\": [], \"oneOf\": []}"));
        SchemaTree schema = schemaLoader.load(schemaNode);
        generator.getSchemaType(type, schema);
    }
}