129 lines
3.3 KiB
Java
129 lines
3.3 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;
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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 java.io.EOFException;
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import java.util.NoSuchElementException;
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import org.junit.Before;
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import org.junit.Test;
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/**
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* Unit tests for {@link JsonStreamParser}
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*
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* @author Inderjeet Singh
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*/
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public class JsonStreamParserTest {
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private JsonStreamParser parser;
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@Before
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public void setUp() throws Exception {
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parser = new JsonStreamParser("'one' 'two'");
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}
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@Test
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public void testParseTwoStrings() {
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String actualOne = parser.next().getAsString();
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assertThat(actualOne).isEqualTo("one");
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String actualTwo = parser.next().getAsString();
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assertThat(actualTwo).isEqualTo("two");
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}
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@Test
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public void testIterator() {
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assertThat(parser.hasNext()).isTrue();
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assertThat(parser.next().getAsString()).isEqualTo("one");
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assertThat(parser.hasNext()).isTrue();
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assertThat(parser.next().getAsString()).isEqualTo("two");
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assertThat(parser.hasNext()).isFalse();
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}
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@Test
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public void testNoSideEffectForHasNext() {
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assertThat(parser.hasNext()).isTrue();
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assertThat(parser.hasNext()).isTrue();
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assertThat(parser.hasNext()).isTrue();
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assertThat(parser.next().getAsString()).isEqualTo("one");
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assertThat(parser.hasNext()).isTrue();
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assertThat(parser.hasNext()).isTrue();
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assertThat(parser.next().getAsString()).isEqualTo("two");
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assertThat(parser.hasNext()).isFalse();
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assertThat(parser.hasNext()).isFalse();
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}
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@Test
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public void testCallingNextBeyondAvailableInput() {
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parser.next();
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parser.next();
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try {
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parser.next();
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fail("Parser should not go beyond available input");
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} catch (NoSuchElementException expected) {
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}
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}
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@Test
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public void testEmptyInput() {
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JsonStreamParser parser = new JsonStreamParser("");
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try {
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parser.next();
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fail();
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} catch (JsonIOException e) {
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assertThat(e.getCause()).isInstanceOf(EOFException.class);
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}
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parser = new JsonStreamParser("");
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try {
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parser.hasNext();
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fail();
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} catch (JsonIOException e) {
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assertThat(e.getCause()).isInstanceOf(EOFException.class);
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}
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}
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@Test
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public void testIncompleteInput() {
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JsonStreamParser parser = new JsonStreamParser("[");
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assertThat(parser.hasNext()).isTrue();
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try {
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parser.next();
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fail();
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} catch (JsonSyntaxException e) {
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}
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}
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@Test
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public void testMalformedInput() {
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JsonStreamParser parser = new JsonStreamParser(":");
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try {
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parser.hasNext();
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fail();
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} catch (JsonSyntaxException e) {
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}
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parser = new JsonStreamParser(":");
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try {
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parser.next();
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fail();
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} catch (JsonSyntaxException e) {
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}
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}
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}
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