99 lines
3.1 KiB
Java
99 lines
3.1 KiB
Java
package com.google.gson.functional;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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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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assertTrue(json.isJsonObject());
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JsonObject obj = json.getAsJsonObject();
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Set<Entry<String, JsonElement>> children = obj.entrySet();
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assertEquals(4, children.size());
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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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assertTrue(json.isJsonObject());
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JsonObject obj = json.getAsJsonObject();
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Set<Entry<String, JsonElement>> children = obj.entrySet();
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assertEquals(4, children.size());
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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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assertEquals(json1, json2);
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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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assertFalse(jsonElement.has("stringValue"));
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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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