Fixed potential test failure due to nondeterminism in the order of elements in jsonString in SimpleFilterProviderTest.testAddFilterLastOneRemainsFlip test (#4224)

Author: saurabh-shetty

src/test/java/com/fasterxml/jackson/databind/ser/filter/SimpleFilterProviderTest.java

@@ -9,7 +9,8 @@
 import com.fasterxml.jackson.databind.ser.FilterProvider;
 import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter;
 import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider;
-
+import java.util.Map;
+import java.util.LinkedHashMap;
 /**
  * Tests {@link SimpleFilterProvider} on registration of filters.
  */
@@ -71,8 +72,13 @@ public void testAddFilterLastOneRemainsFlip() throws Exception {
         AnyBeanB beanB = new AnyBeanB("1a", "2b");
 
         String jsonString = MAPPER.writer(prov).writeValueAsString(beanB);
+        
+        Map<String, Object> actualMap = MAPPER.readValue(jsonString, Map.class);
+        Map<String, Object> expectedMap = new LinkedHashMap<>();
+        expectedMap.put("a", "1a");
+        expectedMap.put("b", "2b");
 
-        assertEquals(a2q("{'a':'1a','b':'2b'}"), jsonString);
+        assertEquals(expectedMap, actualMap);
     }
 
     public void testAddFilterWithEmptyStringId() throws Exception {