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How to compare json objects using gson article (#8793) 

* How to compare json objects using gson article

* static Assert import
IsObject assert has been deleted

* compare strings test failure example
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omerfinger 2020-03-11 19:59:01 +02:00 committed by GitHub
parent 84c78797f5
commit 356ef842f0
1 changed files with 95 additions and 0 deletions
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gson/src/test/java/com/baeldung/gson/jsoncompare/JsonCompareUnitTest.java Normal file
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package com.baeldung.gson.jsoncompare;
import com.google.gson.JsonElement;
import com.google.gson.JsonParser;
import org.junit.Test;
import static org.junit.Assert.*;
public class JsonCompareUnitTest {
@Test
public void givenJsonStrings_whenCompared_thenNotEqual() {
String string1 = "{\"fullName\": \"Emily Jenkins\", \"age\": 27 }";
String string2 = "{\"fullName\": \"Emily Jenkins\", \"age\": 27}";
assertNotEquals(string1, string2);
}
@Test
public void givenIdenticalSimpleObjects_whenCompared_thenEqual() {
JsonParser parser = new JsonParser();
String string1 = "{\"customer\": {\"id\": \"44521\",\"fullName\": \"Emily Jenkins\", \"age\": 27 }}";
String string2 = "{\"customer\": {\"id\": \"44521\", \"fullName\": \"Emily Jenkins\",\"age\": 27}}";
assertTrue(parser.parse(string1)
.isJsonObject());
assertEquals(parser.parse(string1), parser.parse(string2));
}
@Test
public void givenSameObjectsInDifferentOrder_whenCompared_thenEqual() {
JsonParser parser = new JsonParser();
String string1 = "{\"customer\": {\"id\": \"44521\",\"fullName\": \"Emily Jenkins\", \"age\": 27 }}";
String string2 = "{\"customer\": {\"id\": \"44521\",\"age\": 27, \"fullName\": \"Emily Jenkins\" }}";
JsonElement json1 = parser.parse(string1);
JsonElement json2 = parser.parse(string2);
assertEquals(json1, json2);
}
@Test
public void givenIdenticalArrays_whenCompared_thenEqual() {
JsonParser parser = new JsonParser();
String string1 = "[10, 20, 30]";
String string2 = "[10, 20, 30]";
assertTrue(parser.parse(string1)
.isJsonArray());
assertEquals(parser.parse(string1), parser.parse(string2));
}
@Test
public void givenArraysInDifferentOrder_whenCompared_thenNotEqual() {
JsonParser parser = new JsonParser();
String string1 = "[20, 10, 30]";
String string2 = "[10, 20, 30]";
assertNotEquals(parser.parse(string1), parser.parse(string2));
}
@Test
public void givenIdenticalNestedObjects_whenCompared_thenEqual() {
JsonParser parser = new JsonParser();
String string1 = "{\"customer\": {\"id\": \"44521\",\"fullName\": \"Emily Jenkins\", \"age\": 27, \"consumption_info\" : {\"fav_product\": \"Coke\", \"last_buy\": \"2012-04-23\"}}}";
String string2 = "{\"customer\": {\"id\": \"44521\",\"fullName\": \"Emily Jenkins\", \"age\": 27, \"consumption_info\" : {\"last_buy\": \"2012-04-23\", \"fav_product\": \"Coke\"}}}";
JsonElement json1 = parser.parse(string1);
JsonElement json2 = parser.parse(string2);
assertEquals(json1, json2);
}
@Test
public void givenIdenticalNestedObjectsWithArray_whenCompared_thenEqual() {
JsonParser parser = new JsonParser();
String string1 = "{\"customer\": {\"id\": \"44521\",\"fullName\": \"Emily Jenkins\", \"age\": 27, \"consumption_info\" : {\"last_buy\": \"2012-04-23\", \"prouducts\": [\"banana\", \"eggs\"]}}}";
String string2 = "{\"customer\": {\"id\": \"44521\",\"fullName\": \"Emily Jenkins\", \"age\": 27, \"consumption_info\" : {\"last_buy\": \"2012-04-23\", \"prouducts\": [\"banana\", \"eggs\"]}}}";
JsonElement json1 = parser.parse(string1);
JsonElement json2 = parser.parse(string2);
assertEquals(json1, json2);
}
@Test
public void givenNestedObjectsDifferentArrayOrder_whenCompared_thenNotEqual() {
JsonParser parser = new JsonParser();
String string1 = "{\"customer\": {\"id\": \"44521\",\"fullName\": \"Emily Jenkins\", \"age\": 27, \"consumption_info\" : {\"last_buy\": \"2012-04-23\", \"prouducts\": [\"banana\", \"eggs\"]}}}";
String string2 = "{\"customer\": {\"id\": \"44521\",\"fullName\": \"Emily Jenkins\", \"age\": 27, \"consumption_info\" : {\"last_buy\": \"2012-04-23\", \"prouducts\": [\"eggs\", \"banana\"]}}}";
JsonElement json1 = parser.parse(string1);
JsonElement json2 = parser.parse(string2);
assertNotEquals(json1, json2);
}
}