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238
...er/src/jdk.graal.compiler.test/src/jdk/graal/compiler/util/json/test/JsonBuilderTest.java
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| /* | ||
| * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved. | ||
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| * | ||
| * This code is free software; you can redistribute it and/or modify it | ||
| * under the terms of the GNU General Public License version 2 only, as | ||
| * published by the Free Software Foundation. Oracle designates this | ||
| * particular file as subject to the "Classpath" exception as provided | ||
| * by Oracle in the LICENSE file that accompanied this code. | ||
| * | ||
| * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| * version 2 for more details (a copy is included in the LICENSE file that | ||
| * accompanied this code). | ||
| * | ||
| * You should have received a copy of the GNU General Public License version | ||
| * 2 along with this work; if not, write to the Free Software Foundation, | ||
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| * | ||
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| * or visit www.oracle.com if you need additional information or have any | ||
| * questions. | ||
| */ | ||
| package jdk.graal.compiler.util.json.test; | ||
|
|
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| import static org.junit.Assert.assertEquals; | ||
|
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| import java.io.IOException; | ||
| import java.io.StringWriter; | ||
| import java.util.Arrays; | ||
| import java.util.ConcurrentModificationException; | ||
| import java.util.HashSet; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
|
|
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| import org.graalvm.collections.EconomicMap; | ||
| import org.junit.After; | ||
| import org.junit.Before; | ||
| import org.junit.Test; | ||
|
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| import jdk.graal.compiler.util.json.JsonBuilder; | ||
| import jdk.graal.compiler.util.json.JsonParser; | ||
| import jdk.graal.compiler.util.json.JsonWriter; | ||
|
|
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| /** | ||
| * Tests for {@link JsonBuilder}, checking that printed values round-trip when parsed with | ||
| * {@link JsonParser}. | ||
| */ | ||
| public class JsonBuilderTest { | ||
|
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| private static final String KEY1 = "key with \\ and \""; | ||
| private static final String KEY2 = "key2"; | ||
| private static final String KEY3 = "key3"; | ||
| private static final String KEY4 = "key4"; | ||
| private static final String VALUE1 = "value with \\"; | ||
|
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| private StringWriter stringWriter; | ||
| private JsonWriter jsonWriter; | ||
|
|
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| /** | ||
| * Asserts that the given map contains exactly the given keys. | ||
| */ | ||
| private static void assertKeys(EconomicMap<String, Object> map, String... expectedKeys) { | ||
| Set<String> mapKeys = new HashSet<>(map.size()); | ||
| map.getKeys().forEach(mapKeys::add); | ||
|
|
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| assertEquals(mapKeys, new HashSet<>(Arrays.asList(expectedKeys))); | ||
| } | ||
|
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| @Before | ||
| public void setup() { | ||
| stringWriter = new StringWriter(); | ||
| jsonWriter = new JsonWriter(stringWriter); | ||
| } | ||
|
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| @After | ||
| public void teardown() throws IOException { | ||
| jsonWriter.close(); | ||
| } | ||
|
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| @SuppressWarnings("unchecked") | ||
| private EconomicMap<String, Object> parseAsJsonObject() throws IOException { | ||
| return (EconomicMap<String, Object>) parseJson(); | ||
| } | ||
|
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| @SuppressWarnings("unchecked") | ||
| private List<Object> parseAsJsonArray() throws IOException { | ||
| return (List<Object>) parseJson(); | ||
| } | ||
|
|
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| /** | ||
| * Parses the currently written contents. | ||
| */ | ||
| private Object parseJson() throws IOException { | ||
| return new JsonParser(stringWriter.toString()).parse(); | ||
| } | ||
|
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| @Test | ||
| public void testBasicObject() throws IOException { | ||
| try (var ob = jsonWriter.objectBuilder()) { | ||
| ob.append(KEY1, VALUE1); | ||
| } | ||
|
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| EconomicMap<String, Object> map = parseAsJsonObject(); | ||
|
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| assertKeys(map, KEY1); | ||
| assertEquals(VALUE1, map.get(KEY1)); | ||
| } | ||
|
|
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| @Test | ||
| public void testBasicArray() throws IOException { | ||
| try (var ab = jsonWriter.arrayBuilder()) { | ||
| ab.append(VALUE1); | ||
| } | ||
|
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| List<Object> array = parseAsJsonArray(); | ||
|
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| assertEquals(List.of(VALUE1), array); | ||
| } | ||
|
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| @Test | ||
| public void testString() throws IOException { | ||
| jsonWriter.valueBuilder().value(VALUE1); | ||
|
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| String str = (String) parseJson(); | ||
| assertEquals(VALUE1, str); | ||
| } | ||
|
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| @Test | ||
| public void testInteger() throws IOException { | ||
| jsonWriter.valueBuilder().value(1234); | ||
|
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| int i = (int) parseJson(); | ||
| assertEquals(1234, i); | ||
| } | ||
|
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| @Test | ||
| @SuppressWarnings("unchecked") | ||
| public void testNestedObject() throws IOException { | ||
| try (var ob = jsonWriter.objectBuilder()) { | ||
| ob.append(KEY1, VALUE1); | ||
| try (var ob2 = ob.append(KEY2).object()) { | ||
| ob2.append(KEY1, VALUE1); | ||
| } | ||
| } | ||
|
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| EconomicMap<String, Object> map = parseAsJsonObject(); | ||
|
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| assertKeys(map, KEY1, KEY2); | ||
| assertEquals(VALUE1, map.get(KEY1)); | ||
|
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| EconomicMap<String, Object> nestedMap = (EconomicMap<String, Object>) map.get(KEY2); | ||
| assertKeys(nestedMap, KEY1); | ||
|
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| assertEquals(VALUE1, nestedMap.get(KEY1)); | ||
| } | ||
|
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| @Test | ||
| @SuppressWarnings("unchecked") | ||
| public void testLargeObject() throws IOException { | ||
| final List<Object> arrayValues = List.of(VALUE1, 1, 2, Long.MAX_VALUE, true, false, 1.1d, -1223434.34d); | ||
|
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| try (var ob = jsonWriter.objectBuilder()) { | ||
| ob.append(KEY1, VALUE1); | ||
|
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| // Add elements individually | ||
| try (var ab = ob.append(KEY2).array()) { | ||
| for (Object arrayValue : arrayValues) { | ||
| ab.append(arrayValue); | ||
| } | ||
| } | ||
|
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| // Add elements all at once | ||
| ob.append(KEY3).value(arrayValues); | ||
|
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| try (var ob2 = ob.append(KEY4).object()) { | ||
| ob2.append(KEY1, arrayValues); | ||
| } | ||
| } | ||
|
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| EconomicMap<String, Object> map = parseAsJsonObject(); | ||
|
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| assertKeys(map, KEY1, KEY2, KEY3, KEY4); | ||
| assertEquals(VALUE1, map.get(KEY1)); | ||
|
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| List<Object> nestedArray1 = (List<Object>) map.get(KEY2); | ||
| assertEquals(arrayValues, nestedArray1); | ||
|
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| List<Object> nestedArray2 = (List<Object>) map.get(KEY3); | ||
| assertEquals(arrayValues, nestedArray2); | ||
|
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| EconomicMap<String, Object> nestedMap = (EconomicMap<String, Object>) map.get(KEY4); | ||
| assertKeys(nestedMap, KEY1); | ||
|
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| assertEquals(arrayValues, nestedMap.get(KEY1)); | ||
| } | ||
|
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| @Test(expected = IllegalStateException.class) | ||
| public void testMultipleValues() throws IOException { | ||
| JsonBuilder.ValueBuilder vb = jsonWriter.valueBuilder(); | ||
| vb.value(1); | ||
| // This second write causes an IllegalStateException | ||
| vb.value(2); | ||
| } | ||
|
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| @Test(expected = ConcurrentModificationException.class) | ||
| public void testIncompleteArrayValue() throws IOException { | ||
| try (var ab = jsonWriter.arrayBuilder()) { | ||
| ab.append(1); | ||
| // Because this never prints a value, control is never given back to the ArrayBuilder, | ||
| // which will, on closing, produce a ConcurrentModificationException | ||
| ab.nextEntry(); | ||
| } | ||
| } | ||
|
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| @Test(expected = ConcurrentModificationException.class) | ||
| public void testIncompleteObjectValue() throws IOException { | ||
| try (var ob = jsonWriter.objectBuilder()) { | ||
| ob.append(KEY1, VALUE1); | ||
| // Because this never prints a value, control is never given back to the ObjectBuilder, | ||
| // which will, on closing, produce a ConcurrentModificationException | ||
| ob.append(KEY2); | ||
| } | ||
| } | ||
|
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| @Test(expected = ConcurrentModificationException.class) | ||
| public void testWrongNesting() throws IOException { | ||
| try (var ob = jsonWriter.objectBuilder()) { | ||
| ob.append(KEY1, VALUE1); | ||
| try (var ab = ob.append(KEY2).array()) { | ||
| ab.append(1); | ||
| // ob isn't currently responsible for writing and throws an exception. | ||
| ob.append(KEY3, 2); | ||
| } | ||
| } | ||
| } | ||
| } |
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