Fixing flaky test

Author: k163377

src/test/kotlin/com/fasterxml/jackson/module/kotlin/test/github/Github464.kt

@@ -1,5 +1,6 @@
 package com.fasterxml.jackson.module.kotlin.test.github
 
+import com.fasterxml.jackson.annotation.JsonPropertyOrder
 import com.fasterxml.jackson.core.JsonGenerator
 import com.fasterxml.jackson.databind.JsonSerializer
 import com.fasterxml.jackson.databind.ObjectMapper
@@ -40,7 +41,20 @@ class Github464 {
             fun <T> getXyzzy() = quux
         }
 
-
+        @JsonPropertyOrder(
+            "foo",
+            "bar",
+            "baz",
+            "qux",
+            "quux",
+            "corge",
+            "grault",
+            "garply",
+            "waldo",
+            "fred",
+            "plugh",
+            "xyzzy"
+        )
         class Poko(
             val foo: ValueClass,
             val bar: ValueClass?,
@@ -97,8 +111,8 @@ class Github464 {
                         "1" : null,
                         "null-key" : null
                       },
-                      "xyzzy" : 0,
-                      "plugh" : 0
+                      "plugh" : 0,
+                      "xyzzy" : 0
                     }
                 """.trimIndent(),
                 writer.writeValueAsString(target)
@@ -139,8 +153,8 @@ class Github464 {
                         "1" : "null-value",
                         "null-key" : "null-value"
                       },
-                      "xyzzy" : 0,
-                      "plugh" : 0
+                      "plugh" : 0,
+                      "xyzzy" : 0
                     }
                 """.trimIndent(),
                 writer.writeValueAsString(target)