Fix Issue #83: JSON matchers: wrong result when comparing arrays of objects

ktest-integration/ktest-json-matchers/src/test/kotlin/run/smt/ktest/json/matcher/JsonDiffSpec.kt

@@ -56,6 +56,19 @@ object JsonDiffSpec : WordSpec({
             assertThat(diff, isEmpty)
         }
 
+        "not return mismatch for arrays containing equal objects with different field order" {
+            val firstJson = "json-with-array-of-objects1.json".loadAsJsonTree()
+            val secondJson = "json-with-array-of-objects2.json".loadAsJsonTree()
+
+            val comparator = jsonComparator {
+                compareArraysUnordered()
+            }
+
+            val diff = comparator.diff(firstJson, secondJson)
+
+            assertThat(diff, isEmpty)
+        }
+
         "not return mismatch for permutation-based array comparison on arrays with different sort order" {
             val firstJson = "json-with-array.json".loadAsJsonTree()
             val secondJson = "json-with-array-reversed.json".loadAsJsonTree()

ktest-integration/ktest-json-matchers/src/test/resources/json-with-array-of-objects1.json

@@ -0,0 +1,12 @@
+{
+    "myArray": [
+        {
+            "a": 1,
+            "z": 1
+        },
+        {
+            "a": 2,
+            "z": 2
+        }
+    ]
+}

ktest-integration/ktest-json-matchers/src/test/resources/json-with-array-of-objects2.json

@@ -0,0 +1,12 @@
+{
+    "myArray": [
+        {
+            "a": 2,
+            "z": 2
+        },
+        {
+            "z": 1,
+            "a": 1
+        }
+    ]
+}