/
AbstractJsonParserTests.java
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/
AbstractJsonParserTests.java
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/*
* Copyright 2012-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.boot.json;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;
import org.junit.jupiter.api.Test;
import org.springframework.util.StreamUtils;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
/**
* Base for {@link JsonParser} tests.
*
* @author Dave Syer
* @author Jean de Klerk
* @author Stephane Nicoll
*/
abstract class AbstractJsonParserTests {
private final JsonParser parser = getParser();
protected abstract JsonParser getParser();
@Test
void simpleMap() {
Map<String, Object> map = this.parser.parseMap("{\"foo\":\"bar\",\"spam\":1}");
assertThat(map).hasSize(2);
assertThat(map.get("foo")).isEqualTo("bar");
assertThat(((Number) map.get("spam")).longValue()).isEqualTo(1L);
}
@Test
void doubleValue() {
Map<String, Object> map = this.parser.parseMap("{\"foo\":\"bar\",\"spam\":1.23}");
assertThat(map).hasSize(2);
assertThat(map.get("foo")).isEqualTo("bar");
assertThat(map.get("spam")).isEqualTo(1.23d);
}
@Test
void stringContainingNumber() {
Map<String, Object> map = this.parser.parseMap("{\"foo\":\"123\"}");
assertThat(map).hasSize(1);
assertThat(map.get("foo")).isEqualTo("123");
}
@Test
void stringContainingComma() {
Map<String, Object> map = this.parser.parseMap("{\"foo\":\"bar1,bar2\"}");
assertThat(map).hasSize(1);
assertThat(map.get("foo")).isEqualTo("bar1,bar2");
}
@Test
void emptyMap() {
Map<String, Object> map = this.parser.parseMap("{}");
assertThat(map).isEmpty();
}
@Test
void simpleList() {
List<Object> list = this.parser.parseList("[\"foo\",\"bar\",1]");
assertThat(list).hasSize(3);
assertThat(list.get(1)).isEqualTo("bar");
}
@Test
void emptyList() {
List<Object> list = this.parser.parseList("[]");
assertThat(list).isEmpty();
}
@SuppressWarnings("unchecked")
@Test
void listOfMaps() {
List<Object> list = this.parser.parseList("[{\"foo\":\"bar\",\"spam\":1},{\"foo\":\"baz\",\"spam\":2}]");
assertThat(list).hasSize(2);
assertThat(((Map<String, Object>) list.get(1))).hasSize(2);
}
@SuppressWarnings("unchecked")
@Test
void mapOfLists() {
Map<String, Object> map = this.parser
.parseMap("{\"foo\":[{\"foo\":\"bar\",\"spam\":1},{\"foo\":\"baz\",\"spam\":2}]}");
assertThat(map).hasSize(1);
assertThat(((List<Object>) map.get("foo"))).hasSize(2);
assertThat(map.get("foo")).asList().allMatch(Map.class::isInstance);
}
@SuppressWarnings("unchecked")
@Test
void nestedLeadingAndTrailingWhitespace() {
Map<String, Object> map = this.parser.parseMap(
" {\"foo\": [ { \"foo\" : \"bar\" , \"spam\" : 1 } , { \"foo\" : \"baz\" , \"spam\" : 2 } ] } ");
assertThat(map).hasSize(1);
assertThat(((List<Object>) map.get("foo"))).hasSize(2);
assertThat(map.get("foo")).asList().allMatch(Map.class::isInstance);
}
@Test
void mapWithNullThrowsARuntimeException() {
assertThatExceptionOfType(RuntimeException.class).isThrownBy(() -> this.parser.parseMap(null));
}
@Test
void listWithNullThrowsARuntimeException() {
assertThatExceptionOfType(RuntimeException.class).isThrownBy(() -> this.parser.parseList(null));
}
@Test
void mapWithEmptyStringThrowsARuntimeException() {
assertThatExceptionOfType(RuntimeException.class).isThrownBy(() -> this.parser.parseMap(""));
}
@Test
void listWithEmptyStringThrowsARuntimeException() {
assertThatExceptionOfType(RuntimeException.class).isThrownBy(() -> this.parser.parseList(""));
}
@Test
void mapWithListThrowsARuntimeException() {
assertThatExceptionOfType(RuntimeException.class).isThrownBy(() -> this.parser.parseMap("[]"));
}
@Test
void listWithMapThrowsARuntimeException() {
assertThatExceptionOfType(RuntimeException.class).isThrownBy(() -> this.parser.parseList("{}"));
}
@Test
void listWithLeadingWhitespace() {
List<Object> list = this.parser.parseList("\n\t[\"foo\"]");
assertThat(list).hasSize(1);
assertThat(list.get(0)).isEqualTo("foo");
}
@Test
void mapWithLeadingWhitespace() {
Map<String, Object> map = this.parser.parseMap("\n\t{\"foo\":\"bar\"}");
assertThat(map).hasSize(1);
assertThat(map.get("foo")).isEqualTo("bar");
}
@Test
void mapWithLeadingWhitespaceListThrowsARuntimeException() {
assertThatExceptionOfType(RuntimeException.class).isThrownBy(() -> this.parser.parseMap("\n\t[]"));
}
@Test
void listWithLeadingWhitespaceMapThrowsARuntimeException() {
assertThatExceptionOfType(RuntimeException.class).isThrownBy(() -> this.parser.parseList("\n\t{}"));
}
@Test
void escapeDoubleQuote() {
String input = "{\"foo\": \"\\\"bar\\\"\"}";
Map<String, Object> map = this.parser.parseMap(input);
assertThat(map.get("foo")).isEqualTo("\"bar\"");
}
@Test
void listWithMalformedMap() {
assertThatExceptionOfType(JsonParseException.class)
.isThrownBy(() -> this.parser.parseList("[tru,erqett,{\"foo\":fatrue,true,true,true,tr''ue}]"));
}
@Test
void mapWithKeyAndNoValue() {
assertThatExceptionOfType(JsonParseException.class).isThrownBy(() -> this.parser.parseMap("{\"foo\"}"));
}
@Test // gh-31868
void listWithRepeatedOpenArray() throws IOException {
String input = StreamUtils.copyToString(
AbstractJsonParserTests.class.getResourceAsStream("repeated-open-array.txt"), StandardCharsets.UTF_8);
assertThatExceptionOfType(JsonParseException.class).isThrownBy(() -> this.parser.parseList(input)).havingCause()
.withMessageContaining("too deeply nested");
}
}