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# Conflicts: # .github/ISSUE_TEMPLATE/bug_report.md # .github/workflows/build.yml # extras/pom.xml # extras/src/main/java/com/google/gson/graph/GraphAdapterBuilder.java # extras/src/main/java/com/google/gson/typeadapters/UtcDateTypeAdapter.java # extras/src/test/java/com/google/gson/interceptors/InterceptorTest.java # extras/src/test/java/com/google/gson/typeadapters/PostConstructAdapterFactoryTest.java # extras/src/test/java/com/google/gson/typeadapters/RuntimeTypeAdapterFactoryTest.java # extras/src/test/java/com/google/gson/typeadapters/UtcDateTypeAdapterTest.java # gson/src/test/java/com/google/gson/CommentsTest.java # gson/src/test/java/com/google/gson/ToNumberPolicyTest.java # gson/src/test/java/com/google/gson/functional/EnumWithObfuscatedTest.java # gson/src/test/java/com/google/gson/functional/JsonParserTest.java # gson/src/test/java/com/google/gson/functional/LeniencyTest.java # gson/src/test/java/com/google/gson/functional/MapTest.java # gson/src/test/java/com/google/gson/functional/PrimitiveCharacterTest.java # gson/src/test/java/com/google/gson/functional/ReflectionAccessTest.java # gson/src/test/java/com/google/gson/functional/SecurityTest.java # gson/src/test/java/com/google/gson/stream/JsonReaderTest.java # gson/src/test/resources/testcases-proguard.conf # metrics/pom.xml # metrics/src/main/java/com/google/gson/metrics/BagOfPrimitives.java # proto/pom.xml # proto/src/test/java/com/google/gson/protobuf/functional/ProtosWithAnnotationsTest.java # proto/src/test/java/com/google/gson/protobuf/functional/ProtosWithComplexAndRepeatedFieldsTest.java # proto/src/test/java/com/google/gson/protobuf/functional/ProtosWithPrimitiveTypesTest.java
148 lines
5.7 KiB
Java
148 lines
5.7 KiB
Java
/*
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* Copyright (C) 2021 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 com.google.gson.internal.LazilyParsedNumber;
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import com.google.gson.stream.JsonReader;
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import com.google.gson.stream.MalformedJsonException;
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import java.io.IOException;
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import java.io.StringReader;
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import java.math.BigDecimal;
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import org.junit.Test;
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public class ToNumberPolicyTest {
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@Test
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public void testDouble() throws IOException {
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ToNumberStrategy strategy = ToNumberPolicy.DOUBLE;
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assertThat(strategy.readNumber(fromString("10.1"))).isEqualTo(10.1);
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assertThat(strategy.readNumber(fromString("3.141592653589793238462643383279"))).isEqualTo(3.141592653589793D);
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try {
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strategy.readNumber(fromString("1e400"));
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fail();
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} catch (MalformedJsonException expected) {
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assertThat(expected).hasMessageThat().isEqualTo("JSON forbids NaN and infinities: Infinity at line 1 column 6 (char '\0') path $");
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}
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try {
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strategy.readNumber(fromString("\"not-a-number\""));
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fail();
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} catch (NumberFormatException expected) {
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}
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}
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@Test
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public void testLazilyParsedNumber() throws IOException {
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ToNumberStrategy strategy = ToNumberPolicy.LAZILY_PARSED_NUMBER;
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assertThat(strategy.readNumber(fromString("10.1"))).isEqualTo(new LazilyParsedNumber("10.1"));
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assertThat(strategy.readNumber(fromString("3.141592653589793238462643383279"))).isEqualTo(new LazilyParsedNumber("3.141592653589793238462643383279"));
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assertThat(strategy.readNumber(fromString("1e400"))).isEqualTo(new LazilyParsedNumber("1e400"));
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}
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@Test
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public void testLongOrDouble() throws IOException {
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ToNumberStrategy strategy = ToNumberPolicy.LONG_OR_DOUBLE;
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assertThat(strategy.readNumber(fromString("10"))).isEqualTo(10L);
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assertThat(strategy.readNumber(fromString("10.1"))).isEqualTo(10.1);
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assertThat(strategy.readNumber(fromString("3.141592653589793238462643383279"))).isEqualTo(3.141592653589793D);
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try {
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strategy.readNumber(fromString("1e400"));
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fail();
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} catch (MalformedJsonException expected) {
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assertThat(expected).hasMessageThat().isEqualTo("JSON forbids NaN and infinities: Infinity; at path $");
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}
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try {
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strategy.readNumber(fromString("\"not-a-number\""));
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fail();
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} catch (JsonParseException expected) {
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assertThat(expected).hasMessageThat().isEqualTo("Cannot parse not-a-number; at path $");
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}
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assertThat(strategy.readNumber(fromStringLenient("NaN"))).isEqualTo(Double.NaN);
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assertThat(strategy.readNumber(fromStringLenient("Infinity"))).isEqualTo(Double.POSITIVE_INFINITY);
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assertThat(strategy.readNumber(fromStringLenient("-Infinity"))).isEqualTo(Double.NEGATIVE_INFINITY);
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try {
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strategy.readNumber(fromString("NaN"));
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fail();
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} catch (MalformedJsonException expected) {
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assertThat(expected).hasMessageThat().isEqualTo("Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 1 (char 'N') path $");
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}
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try {
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strategy.readNumber(fromString("Infinity"));
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fail();
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} catch (MalformedJsonException expected) {
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assertThat(expected).hasMessageThat().isEqualTo("Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 1 (char 'I') path $");
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}
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try {
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strategy.readNumber(fromString("-Infinity"));
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fail();
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} catch (MalformedJsonException expected) {
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assertThat(expected).hasMessageThat().isEqualTo("Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 1 (char '-') path $");
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}
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}
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@Test
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public void testBigDecimal() throws IOException {
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ToNumberStrategy strategy = ToNumberPolicy.BIG_DECIMAL;
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assertThat(strategy.readNumber(fromString("10.1"))).isEqualTo(new BigDecimal("10.1"));
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assertThat(strategy.readNumber(fromString("3.141592653589793238462643383279"))).isEqualTo(new BigDecimal("3.141592653589793238462643383279"));
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assertThat(strategy.readNumber(fromString("1e400"))).isEqualTo(new BigDecimal("1e400"));
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try {
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strategy.readNumber(fromString("\"not-a-number\""));
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fail();
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} catch (JsonParseException expected) {
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assertThat(expected).hasMessageThat().isEqualTo("Cannot parse not-a-number; at path $");
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}
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}
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@Test
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public void testNullsAreNeverExpected() throws IOException {
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try {
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ToNumberPolicy.DOUBLE.readNumber(fromString("null"));
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fail();
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} catch (IllegalStateException expected) {
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}
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try {
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ToNumberPolicy.LAZILY_PARSED_NUMBER.readNumber(fromString("null"));
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fail();
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} catch (IllegalStateException expected) {
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}
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try {
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ToNumberPolicy.LONG_OR_DOUBLE.readNumber(fromString("null"));
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fail();
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} catch (IllegalStateException expected) {
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}
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try {
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ToNumberPolicy.BIG_DECIMAL.readNumber(fromString("null"));
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fail();
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} catch (IllegalStateException expected) {
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}
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}
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private static JsonReader fromString(String json) {
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return new JsonReader(new StringReader(json));
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}
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private static JsonReader fromStringLenient(String json) {
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JsonReader jsonReader = fromString(json);
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jsonReader.setLenient(true);
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return jsonReader;
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}
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}
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