113 lines
3.6 KiB
Java
113 lines
3.6 KiB
Java
/*
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* Copyright (C) 2009 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.gson.functional;
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import static com.google.common.truth.Truth.assertThat;
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import static org.junit.Assert.fail;
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import com.google.gson.Gson;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonPrimitive;
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import com.google.gson.common.TestTypes.BagOfPrimitives;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.Set;
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import org.junit.Before;
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import org.junit.Test;
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/**
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* Functional tests for {@link Gson#toJsonTree(Object)} and
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* {@link Gson#toJsonTree(Object, java.lang.reflect.Type)}
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*
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* @author Inderjeet Singh
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* @author Joel Leitch
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*/
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public class JsonTreeTest {
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private Gson gson;
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@Before
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public void setUp() throws Exception {
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gson = new Gson();
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}
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@Test
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public void testToJsonTree() {
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BagOfPrimitives bag = new BagOfPrimitives(10L, 5, false, "foo");
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JsonElement json = gson.toJsonTree(bag);
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assertThat(json.isJsonObject()).isTrue();
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JsonObject obj = json.getAsJsonObject();
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Set<Entry<String, JsonElement>> children = obj.entrySet();
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assertThat(children).hasSize(4);
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assertContains(obj, new JsonPrimitive(10L));
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assertContains(obj, new JsonPrimitive(5));
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assertContains(obj, new JsonPrimitive(false));
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assertContains(obj, new JsonPrimitive("foo"));
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}
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@Test
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public void testToJsonTreeObjectType() {
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SubTypeOfBagOfPrimitives bag = new SubTypeOfBagOfPrimitives(10L, 5, false, "foo", 1.4F);
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JsonElement json = gson.toJsonTree(bag, BagOfPrimitives.class);
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assertThat(json.isJsonObject()).isTrue();
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JsonObject obj = json.getAsJsonObject();
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Set<Entry<String, JsonElement>> children = obj.entrySet();
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assertThat(children).hasSize(4);
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assertContains(obj, new JsonPrimitive(10L));
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assertContains(obj, new JsonPrimitive(5));
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assertContains(obj, new JsonPrimitive(false));
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assertContains(obj, new JsonPrimitive("foo"));
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}
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@Test
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public void testJsonTreeToString() {
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SubTypeOfBagOfPrimitives bag = new SubTypeOfBagOfPrimitives(10L, 5, false, "foo", 1.4F);
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String json1 = gson.toJson(bag);
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JsonElement jsonElement = gson.toJsonTree(bag, SubTypeOfBagOfPrimitives.class);
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String json2 = gson.toJson(jsonElement);
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assertThat(json2).isEqualTo(json1);
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}
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@Test
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public void testJsonTreeNull() {
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BagOfPrimitives bag = new BagOfPrimitives(10L, 5, false, null);
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JsonObject jsonElement = (JsonObject) gson.toJsonTree(bag, BagOfPrimitives.class);
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assertThat(jsonElement.has("stringValue")).isFalse();
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}
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private void assertContains(JsonObject json, JsonPrimitive child) {
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for (Map.Entry<String, JsonElement> entry : json.entrySet()) {
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JsonElement node = entry.getValue();
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if (node.isJsonPrimitive()) {
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if (node.getAsJsonPrimitive().equals(child)) {
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return;
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}
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}
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}
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fail();
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}
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private static class SubTypeOfBagOfPrimitives extends BagOfPrimitives {
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@SuppressWarnings("unused")
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float f = 1.2F;
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public SubTypeOfBagOfPrimitives(long l, int i, boolean b, String string, float f) {
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super(l, i, b, string);
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this.f = f;
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}
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}
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}
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