Fixes tests for #3255

Author: bnasslahsen

springdoc-openapi-tests/springdoc-openapi-kotlin-webflux-tests/src/test/resources/results/3.0.1/app4.json

@@ -54,7 +54,8 @@
             "type": "string"
           },
           "nickname": {
-            "type": "string"
+            "type": "string",
+            "nullable": true
           }
         }
       }

springdoc-openapi-tests/springdoc-openapi-kotlin-webflux-tests/src/test/resources/results/3.0.1/app9.json

@@ -60,10 +60,12 @@
         "properties": {
           "requiredNullableDefault": {
             "type": "string",
+            "nullable": true,
             "default": "a default value"
           },
           "requiredNullableNoDefault": {
-            "type": "string"
+            "type": "string",
+            "nullable": true
           },
           "requiredNoNullableDefault": {
             "type": "string",
@@ -74,10 +76,12 @@
           },
           "requiredNullableDefault1": {
             "type": "string",
+            "nullable": true,
             "default": "a default value"
           },
           "requiredNullableNoDefault1": {
-            "type": "string"
+            "type": "string",
+            "nullable": true
           },
           "requiredNoNullableDefault1": {
             "type": "string",
@@ -88,10 +92,12 @@
           },
           "noRequiredNullableDefault2": {
             "type": "string",
+            "nullable": true,
             "default": "a default value"
           },
           "noRequiredNullableNoDefault2": {
-            "type": "string"
+            "type": "string",
+            "nullable": true
           },
           "noRequiredNoNullableDefault2": {
             "type": "string",
@@ -102,10 +108,12 @@
           },
           "noRequiredNullableDefault": {
             "type": "string",
+            "nullable": true,
             "default": "a default value"
           },
           "noRequiredNullableNoDefault": {
-            "type": "string"
+            "type": "string",
+            "nullable": true
           },
           "noRequiredNoNullableDefault": {
             "type": "string",

springdoc-openapi-tests/springdoc-openapi-kotlin-webflux-tests/src/test/resources/results/3.1.0/app4.json

@@ -54,7 +54,10 @@
             "type": "string"
           },
           "nickname": {
-            "type": "string"
+            "type": [
+              "string",
+              "null"
+            ]
           }
         }
       }

springdoc-openapi-tests/springdoc-openapi-kotlin-webflux-tests/src/test/resources/results/3.1.0/app9.json

@@ -59,11 +59,17 @@
         "type": "object",
         "properties": {
           "requiredNullableDefault": {
-            "type": "string",
+            "type": [
+              "string",
+              "null"
+            ],
             "default": "a default value"
           },
           "requiredNullableNoDefault": {
-            "type": "string"
+            "type": [
+              "string",
+              "null"
+            ]
           },
           "requiredNoNullableDefault": {
             "type": "string",
@@ -73,11 +79,17 @@
             "type": "string"
           },
           "requiredNullableDefault1": {
-            "type": "string",
+            "type": [
+              "string",
+              "null"
+            ],
             "default": "a default value"
           },
           "requiredNullableNoDefault1": {
-            "type": "string"
+            "type": [
+              "string",
+              "null"
+            ]
           },
           "requiredNoNullableDefault1": {
             "type": "string",
@@ -87,11 +99,17 @@
             "type": "string"
           },
           "noRequiredNullableDefault2": {
-            "type": "string",
+            "type": [
+              "string",
+              "null"
+            ],
             "default": "a default value"
           },
           "noRequiredNullableNoDefault2": {
-            "type": "string"
+            "type": [
+              "string",
+              "null"
+            ]
           },
           "noRequiredNoNullableDefault2": {
             "type": "string",
@@ -101,11 +119,17 @@
             "type": "string"
           },
           "noRequiredNullableDefault": {
-            "type": "string",
+            "type": [
+              "string",
+              "null"
+            ],
             "default": "a default value"
           },
           "noRequiredNullableNoDefault": {
-            "type": "string"
+            "type": [
+              "string",
+              "null"
+            ]
           },
           "noRequiredNoNullableDefault": {
             "type": "string",