373 lines
10 KiB
Java
373 lines
10 KiB
Java
/*
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* Copyright (C) 2011 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;
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import static com.google.common.truth.Truth.assertThat;
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import static com.google.common.truth.Truth.assertWithMessage;
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import static org.junit.Assert.fail;
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import com.google.gson.common.MoreAsserts;
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import java.math.BigInteger;
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import org.junit.Test;
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/**
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* @author Jesse Wilson
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*/
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public final class JsonArrayTest {
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@Test
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public void testEqualsOnEmptyArray() {
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MoreAsserts.assertEqualsAndHashCode(new JsonArray(), new JsonArray());
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}
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@Test
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public void testEqualsNonEmptyArray() {
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JsonArray a = new JsonArray();
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JsonArray b = new JsonArray();
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assertThat(a).isEqualTo(a);
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a.add(new JsonObject());
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assertThat(a.equals(b)).isFalse();
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assertThat(b.equals(a)).isFalse();
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b.add(new JsonObject());
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MoreAsserts.assertEqualsAndHashCode(a, b);
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a.add(new JsonObject());
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assertThat(a.equals(b)).isFalse();
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assertThat(b.equals(a)).isFalse();
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b.add(JsonNull.INSTANCE);
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assertThat(a.equals(b)).isFalse();
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assertThat(b.equals(a)).isFalse();
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}
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@Test
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public void testRemove() {
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JsonArray array = new JsonArray();
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try {
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array.remove(0);
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fail();
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} catch (IndexOutOfBoundsException expected) {}
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JsonPrimitive a = new JsonPrimitive("a");
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array.add(a);
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assertThat(array.remove(a)).isTrue();
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assertThat(array.contains(a)).isFalse();
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array.add(a);
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array.add(new JsonPrimitive("b"));
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assertThat(array.remove(1).getAsString()).isEqualTo("b");
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assertThat(array).hasSize(1);
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assertThat(array.contains(a)).isTrue();
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}
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@Test
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public void testSet() {
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JsonArray array = new JsonArray();
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try {
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array.set(0, new JsonPrimitive(1));
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fail();
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} catch (IndexOutOfBoundsException expected) {}
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JsonPrimitive a = new JsonPrimitive("a");
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array.add(a);
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JsonPrimitive b = new JsonPrimitive("b");
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JsonElement oldValue = array.set(0, b);
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assertThat(oldValue).isEqualTo(a);
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assertThat(array.get(0).getAsString()).isEqualTo("b");
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oldValue = array.set(0, null);
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assertThat(oldValue).isEqualTo(b);
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assertThat(array.get(0)).isEqualTo(JsonNull.INSTANCE);
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oldValue = array.set(0, new JsonPrimitive("c"));
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assertThat(oldValue).isEqualTo(JsonNull.INSTANCE);
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assertThat(array.get(0).getAsString()).isEqualTo("c");
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assertThat(array).hasSize(1);
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}
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@Test
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public void testDeepCopy() {
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JsonArray original = new JsonArray();
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JsonArray firstEntry = new JsonArray();
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original.add(firstEntry);
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JsonArray copy = original.deepCopy();
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original.add(new JsonPrimitive("y"));
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assertThat(copy).hasSize(1);
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firstEntry.add(new JsonPrimitive("z"));
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assertThat(original.get(0).getAsJsonArray()).hasSize(1);
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assertThat(copy.get(0).getAsJsonArray()).hasSize(0);
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}
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@Test
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public void testIsEmpty() {
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JsonArray array = new JsonArray();
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assertThat(array).isEmpty();
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JsonPrimitive a = new JsonPrimitive("a");
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array.add(a);
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assertThat(array).isNotEmpty();
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array.remove(0);
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assertThat(array).isEmpty();
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}
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@Test
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public void testFailedGetArrayValues() {
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JsonArray jsonArray = new JsonArray();
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jsonArray.add(JsonParser.parseString("{" + "\"key1\":\"value1\"," + "\"key2\":\"value2\"," + "\"key3\":\"value3\"," + "\"key4\":\"value4\"" + "}"));
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try {
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jsonArray.getAsBoolean();
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fail("expected getBoolean to fail");
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} catch (UnsupportedOperationException e) {
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assertWithMessage("Expected an exception message")
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.that(e).hasMessageThat().isEqualTo("JsonObject");
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}
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try {
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jsonArray.get(-1);
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fail("expected get to fail");
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} catch (IndexOutOfBoundsException e) {
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assertWithMessage("Expected an exception message")
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.that(e).hasMessageThat().isEqualTo("Index -1 out of bounds for length 1");
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}
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try {
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jsonArray.getAsString();
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fail("expected getString to fail");
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} catch (UnsupportedOperationException e) {
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assertWithMessage("Expected an exception message")
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.that(e).hasMessageThat().isEqualTo("JsonObject");
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}
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jsonArray.remove(0);
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jsonArray.add("hello");
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try {
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jsonArray.getAsDouble();
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fail("expected getDouble to fail");
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} catch (NumberFormatException e) {
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assertWithMessage("Expected an exception message")
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.that(e).hasMessageThat().isEqualTo("For input string: \"hello\"");
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}
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try {
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jsonArray.getAsInt();
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fail("expected getInt to fail");
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} catch (NumberFormatException e) {
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assertWithMessage("Expected an exception message")
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.that(e).hasMessageThat().isEqualTo("For input string: \"hello\"");
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}
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try {
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jsonArray.get(0).getAsJsonArray();
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fail("expected getJSONArray to fail");
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} catch (IllegalStateException e) {
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assertWithMessage("Expected an exception message")
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.that(e).hasMessageThat().isEqualTo("Not a JSON Array: \"hello\"");
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}
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try {
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jsonArray.getAsJsonObject();
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fail("expected getJSONObject to fail");
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} catch (IllegalStateException e) {
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assertWithMessage("Expected an exception message")
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.that(e).hasMessageThat().isEqualTo( "Not a JSON Object: [\"hello\"]");
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}
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try {
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jsonArray.getAsLong();
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fail("expected getLong to fail");
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} catch (NumberFormatException e) {
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assertWithMessage("Expected an exception message")
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.that(e).hasMessageThat().isEqualTo("For input string: \"hello\"");
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}
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}
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@Test
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public void testGetAs_WrongArraySize() {
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JsonArray jsonArray = new JsonArray();
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try {
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jsonArray.getAsByte();
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fail();
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} catch (IllegalStateException e) {
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assertThat(e).hasMessageThat().isEqualTo("Array must have size 1, but has size 0");
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}
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jsonArray.add(true);
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jsonArray.add(false);
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try {
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jsonArray.getAsByte();
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fail();
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} catch (IllegalStateException e) {
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assertThat(e).hasMessageThat().isEqualTo("Array must have size 1, but has size 2");
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}
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}
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@Test
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public void testStringPrimitiveAddition() {
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JsonArray jsonArray = new JsonArray();
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jsonArray.add("Hello");
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jsonArray.add("Goodbye");
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jsonArray.add("Thank you");
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jsonArray.add((String) null);
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jsonArray.add("Yes");
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assertThat(jsonArray.toString()).isEqualTo("[\"Hello\",\"Goodbye\",\"Thank you\",null,\"Yes\"]");
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}
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@Test
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public void testIntegerPrimitiveAddition() {
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JsonArray jsonArray = new JsonArray();
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int x = 1;
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jsonArray.add(x);
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x = 2;
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jsonArray.add(x);
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x = -3;
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jsonArray.add(x);
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jsonArray.add((Integer) null);
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x = 4;
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jsonArray.add(x);
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x = 0;
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jsonArray.add(x);
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assertThat(jsonArray.toString()).isEqualTo("[1,2,-3,null,4,0]");
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}
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@Test
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public void testDoublePrimitiveAddition() {
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JsonArray jsonArray = new JsonArray();
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double x = 1.0;
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jsonArray.add(x);
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x = 2.13232;
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jsonArray.add(x);
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x = 0.121;
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jsonArray.add(x);
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jsonArray.add((Double) null);
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x = -0.00234;
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jsonArray.add(x);
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jsonArray.add((Double) null);
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assertThat(jsonArray.toString()).isEqualTo("[1.0,2.13232,0.121,null,-0.00234,null]");
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}
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@Test
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public void testBooleanPrimitiveAddition() {
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JsonArray jsonArray = new JsonArray();
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jsonArray.add(true);
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jsonArray.add(true);
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jsonArray.add(false);
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jsonArray.add(false);
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jsonArray.add((Boolean) null);
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jsonArray.add(true);
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assertThat(jsonArray.toString()).isEqualTo("[true,true,false,false,null,true]");
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}
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@Test
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public void testCharPrimitiveAddition() {
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JsonArray jsonArray = new JsonArray();
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jsonArray.add('a');
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jsonArray.add('e');
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jsonArray.add('i');
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jsonArray.add((char) 111);
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jsonArray.add((Character) null);
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jsonArray.add('u');
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jsonArray.add("and sometimes Y");
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assertThat(jsonArray.toString()).isEqualTo("[\"a\",\"e\",\"i\",\"o\",null,\"u\",\"and sometimes Y\"]");
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}
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@Test
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public void testMixedPrimitiveAddition() {
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JsonArray jsonArray = new JsonArray();
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jsonArray.add('a');
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jsonArray.add("apple");
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jsonArray.add(12121);
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jsonArray.add((char) 111);
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jsonArray.add((Boolean) null);
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assertThat(jsonArray.get(jsonArray.size() - 1)).isEqualTo(JsonNull.INSTANCE);
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jsonArray.add((Character) null);
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assertThat(jsonArray.get(jsonArray.size() - 1)).isEqualTo(JsonNull.INSTANCE);
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jsonArray.add(12.232);
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jsonArray.add(BigInteger.valueOf(2323));
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assertThat(jsonArray.toString()).isEqualTo("[\"a\",\"apple\",12121,\"o\",null,null,12.232,2323]");
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}
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@Test
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public void testNullPrimitiveAddition() {
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JsonArray jsonArray = new JsonArray();
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jsonArray.add((Character) null);
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jsonArray.add((Boolean) null);
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jsonArray.add((Integer) null);
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jsonArray.add((Double) null);
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jsonArray.add((Float) null);
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jsonArray.add((BigInteger) null);
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jsonArray.add((String) null);
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jsonArray.add((Boolean) null);
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jsonArray.add((Number) null);
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assertThat(jsonArray.toString()).isEqualTo("[null,null,null,null,null,null,null,null,null]");
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for (int i = 0; i < jsonArray.size(); i++) {
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// Verify that they are actually a JsonNull and not a Java null
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assertThat(jsonArray.get(i)).isEqualTo(JsonNull.INSTANCE);
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}
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}
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@Test
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public void testNullJsonElementAddition() {
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JsonArray jsonArray = new JsonArray();
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jsonArray.add((JsonElement) null);
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assertThat(jsonArray.get(0)).isEqualTo(JsonNull.INSTANCE);
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}
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@Test
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public void testSameAddition() {
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JsonArray jsonArray = new JsonArray();
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jsonArray.add('a');
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jsonArray.add('a');
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jsonArray.add(true);
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jsonArray.add(true);
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jsonArray.add(1212);
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jsonArray.add(1212);
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jsonArray.add(34.34);
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jsonArray.add(34.34);
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jsonArray.add((Boolean) null);
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jsonArray.add((Boolean) null);
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assertThat(jsonArray.toString()).isEqualTo("[\"a\",\"a\",true,true,1212,1212,34.34,34.34,null,null]");
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}
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}
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