chore: Add new utility methods for json parsing

Author: en-milie

src/main/java/com/endava/cats/util/JsonUtils.java

@@ -3,6 +3,8 @@
 import com.endava.cats.model.ann.ExcludeTestCaseStrategy;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.module.SimpleModule;
@@ -571,6 +573,39 @@ public static String insertCharactersInFieldKey(String json, String currentField
         return replaceNewElement(inputJsonWithRemovedKey, pathToKey, newFieldKey, currentFieldValue);
     }
 
+    /**
+     * Parses a JSON string into a Map using the custom depth mapper.
+     *
+     * @param json the JSON string to parse
+     * @return a Map representation of the JSON
+     */
+    public static Map<String, Object> parseJsonToMap(String json) {
+        if (json == null || json.isBlank()) {
+            return Map.of();
+        }
+
+        try {
+            return getCustomDepthMapper().readValue(json, new TypeReference<>() {
+            });
+        } catch (IOException e) {
+            throw new IllegalArgumentException("Invalid JSON input: " + json, e);
+        }
+    }
+
+    /**
+     * Converts a Map to a JSON string using the custom depth mapper.
+     *
+     * @param map the Map to convert
+     * @return the JSON string representation of the Map
+     */
+    public static String toJsonString(Map<String, Object> map) {
+        try {
+            return getCustomDepthMapper().writeValueAsString(map);
+        } catch (JsonProcessingException e) {
+            throw new RuntimeException("Failed to convert map to JSON string", e);
+        }
+    }
+
     private static void traverseJson(JsonElement element, String prefix, List<String> fields) {
         if (element.isJsonObject()) {
             JsonObject jsonObject = element.getAsJsonObject();

src/test/java/com/endava/cats/args/FilterArgumentsTest.java

@@ -78,7 +78,7 @@ void shouldIncludeAllFuzzers() {
         List<String> fuzzers = filterArguments.getFirstPhaseFuzzersForPath();
 
         Assertions.assertThat(fuzzers).contains("LeadingControlCharsInHeadersFuzzer", "LeadingWhitespacesInHeadersFuzzer", "LeadingMultiCodePointEmojisInFieldsTrimValidateFuzzer"
-                , "RemoveFieldsFuzzer", "CheckSecurityHeadersFuzzer").hasSize(144);
+                , "RemoveFieldsFuzzer", "CheckSecurityHeadersFuzzer").hasSize(148);
     }
 
     @Test
@@ -145,7 +145,7 @@ void shouldReturnGetAndDeleteWhenNotHttpMethodSupplied() {
 
     @Test
     void shouldReturnAllRegisteredFuzzers() {
-        Assertions.assertThat(filterArguments.getAllRegisteredFuzzers()).hasSize(149);
+        Assertions.assertThat(filterArguments.getAllRegisteredFuzzers()).hasSize(153);
     }
 
     @Test
@@ -368,7 +368,7 @@ void shouldHaveDefaultHttpMethods() {
 
     @Test
     void shouldReturnFuzzersAsClasses() {
-        Assertions.assertThat(filterArguments.getFirstPhaseFuzzersAsFuzzers()).hasSize(100);
+        Assertions.assertThat(filterArguments.getFirstPhaseFuzzersAsFuzzers()).hasSize(104);
     }
 
     @Test

src/test/resources/headers.yml

@@ -1,4 +1,4 @@
-all:
+All:
   header: value
   catsFuzzedHeader: cats
 auth-header:

src/test/resources/petstore_empty_body.json

@@ -13,6 +13,40 @@
     }
   ],
   "paths": {
+    "/pets-array": {
+      "post": {
+        "summary": "Create pets",
+        "operationId": "createMorePets",
+        "tags": [
+          "pets"
+        ],
+        "requestBody": {
+          "content": {
+            "application/json": {
+              "schema": {
+                "$ref": "#/components/schemas/PetsArray"
+              }
+            }
+          },
+          "required": true
+        },
+        "responses": {
+          "201": {
+            "description": "Null response"
+          },
+          "default": {
+            "description": "unexpected error",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/PetsArray"
+                }
+              }
+            }
+          }
+        }
+      }
+    },
     "/pets": {
       "get": {
         "summary": "List all pets",
@@ -67,12 +101,12 @@
         "tags": [
           "pets"
         ],
-				"requestBody": {
-					"content": {
-						"application/json": {}
-					},
-					"required": true
-				},
+        "requestBody": {
+          "content": {
+            "application/json": {}
+          },
+          "required": true
+        },
         "responses": {
           "201": {
             "description": "Null response"
@@ -172,6 +206,11 @@
   },
   "components": {
     "schemas": {
+      "PetsArray": {
+        "example": [],
+        "maxItems": 0,
+        "type": "array"
+      },
       "Pet": {
         "type": "object",
         "required": [