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/*
* Copyright 2000-2016 Vaadin Ltd.
*
* 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
*
* http://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 com.vaadin.data.util;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.DoubleStream;
import java.util.stream.Stream;
import org.junit.Assert;
import org.junit.Test;
import elemental.json.Json;
import elemental.json.JsonArray;
import elemental.json.JsonObject;
import elemental.json.JsonValue;
import elemental.json.impl.JreJsonNull;
public class JsonUtilTest {
@Test
public void testEquals() {
// Equal
Assert.assertTrue(
JsonUtil.jsonEquals(Json.create(true), Json.create(true)));
Assert.assertTrue(
JsonUtil.jsonEquals(Json.create("foo"), Json.create("foo")));
Assert.assertTrue(
JsonUtil.jsonEquals(Json.create(3.14), Json.create(3.14)));
Assert.assertTrue(
JsonUtil.jsonEquals(Json.createNull(), Json.createNull()));
Assert.assertTrue(
JsonUtil.jsonEquals(createTestObject1(), createTestObject1()));
Assert.assertTrue(
JsonUtil.jsonEquals(createTestArray1(), createTestArray1()));
// Non-equal with matching types
Assert.assertFalse(
JsonUtil.jsonEquals(Json.create(true), Json.create(false)));
Assert.assertFalse(
JsonUtil.jsonEquals(Json.create("foo"), Json.create("oof")));
Assert.assertFalse(
JsonUtil.jsonEquals(Json.create(3.14), Json.create(3.142)));
Assert.assertFalse(
JsonUtil.jsonEquals(createTestObject1(), createTestObject2()));
Assert.assertFalse(
JsonUtil.jsonEquals(createTestArray1(), createTestArray2()));
// Non-equal with different types
Assert.assertFalse(
JsonUtil.jsonEquals(Json.create(true), Json.create("true")));
Assert.assertFalse(
JsonUtil.jsonEquals(Json.create(3.14), Json.create("3.14")));
Assert.assertFalse(
JsonUtil.jsonEquals(Json.createNull(), Json.create("null")));
Assert.assertFalse(
JsonUtil.jsonEquals(Json.createObject(), Json.create("{}")));
Assert.assertFalse(
JsonUtil.jsonEquals(Json.createArray(), Json.create(0)));
Assert.assertFalse(
JsonUtil.jsonEquals(createTestArray1(), createTestObject1()));
}
@Test(expected = AssertionError.class)
public void testEquals_firstNull_throws() {
JsonUtil.jsonEquals(null, Json.createNull());
}
@Test(expected = AssertionError.class)
public void testEquals_secondNull_throws() {
JsonUtil.jsonEquals(Json.createNull(), null);
}
private static JsonObject createTestObject1() {
JsonObject object = Json.createObject();
object.put("foo", "foo");
object.put("bar", createTestArray1());
object.put("baz", Json.createObject());
return object;
}
private static JsonObject createTestObject2() {
JsonObject object = Json.createObject();
object.put("foo", "oof");
object.put("bar", createTestArray2());
object.put("baz", Json.createArray());
return object;
}
private static JsonArray createTestArray1() {
return Stream.of(Json.create("foo"), Json.createObject())
.collect(JsonUtil.asArray());
}
private static JsonArray createTestArray2() {
return Stream.of(Json.create("bar"), Json.createArray())
.collect(JsonUtil.asArray());
}
@Test
public void collectEmptyStream() {
Stream<JsonValue> jsonValueStream = Stream.empty();
JsonArray a = jsonValueStream.collect(JsonUtil.asArray());
Assert.assertEquals(0, a.length());
}
@Test(expected = AssertionError.class)
public void createObjectStreamForNull() {
JsonUtil.objectStream(null);
}
@Test(expected = AssertionError.class)
public void createNumberStreamForNull() {
JsonUtil.numberStream(null);
}
@Test(expected = AssertionError.class)
public void createStreamForNull() {
JsonUtil.stream(null);
}
@Test
public void testStream() {
JsonArray array = createTestArray1();
List<JsonValue> list = JsonUtil.stream(array)
.collect(Collectors.toList());
Assert.assertEquals(2, list.size());
Assert.assertEquals("foo", list.get(0).asString());
Assert.assertTrue(
JsonUtil.jsonEquals(list.get(1), Json.createObject()));
}
@Test
public void testObjectStream() {
JsonArray array = Stream.of(Json.createObject(), createTestObject1(),
createTestObject2()).collect(JsonUtil.asArray());
List<JsonObject> objects = JsonUtil.objectStream(array)
.collect(Collectors.toList());
Assert.assertEquals(3, objects.size());
Assert.assertTrue(
JsonUtil.jsonEquals(Json.createObject(), objects.get(0)));
Assert.assertTrue(
JsonUtil.jsonEquals(createTestObject1(), objects.get(1)));
Assert.assertTrue(
JsonUtil.jsonEquals(createTestObject2(), objects.get(2)));
}
@Test
public void testNumberStream() {
double[] values = new double[] { 3.14, 42, Double.MAX_VALUE };
JsonArray array = DoubleStream.of(values).mapToObj(Json::create)
.collect(JsonUtil.asArray());
DoubleStream numberStream = JsonUtil.numberStream(array);
Assert.assertArrayEquals(values, numberStream.toArray(), 0);
}
@Test
public void testAsArray() {
Stream<JsonValue> stream = JsonUtil.stream(createTestArray1());
JsonArray array = stream.collect(JsonUtil.asArray());
Assert.assertTrue(JsonUtil.jsonEquals(createTestArray1(), array));
}
@Test
public void testCreateArray() {
JsonArray array = JsonUtil.createArray(Json.create("string"),
Json.createNull());
Assert.assertEquals(2, array.length());
Assert.assertEquals("string", array.getString(0));
Assert.assertSame(JreJsonNull.class, array.get(1).getClass());
}
@Test
public void testCreateEmptyArray() {
JsonArray array = JsonUtil.createArray();
Assert.assertEquals(0, array.length());
}
}
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