bump parser version up and added test to verify exampleFlags checks.

modules/swagger-parser-v3/src/test/java/io/swagger/v3/parser/test/OpenAPIV3ParserTest.java

@@ -231,6 +231,65 @@ public void testDeserializeExampleFlag() {
         assertNull(openAPI.getComponents().getSchemas().get("TestNumberMissing").getExample());
     }
 
+    @Test
+    public void testExampleFlag() {
+        OpenAPIV3Parser openApiParser = new OpenAPIV3Parser();
+        ParseOptions options = new ParseOptions();
+        options.setResolve(true);
+        options.setResolveCombinators(true);
+        options.setResolveFully(true);
+        options.setFlatten(true);
+        SwaggerParseResult parseResult = openApiParser.readLocation("media-type-null-example.yaml", null, options);
+
+        OpenAPI openAPI = parseResult.getOpenAPI();
+
+        assertNull(openAPI.getPaths().get("/pets/{petId}").getGet().getResponses().get("200").getContent().get("application/json").getExample());
+        assertTrue(openAPI.getPaths().get("/pets/{petId}").getGet().getResponses().get("200").getContent().get("application/json").getExampleSetFlag());
+
+        assertNull(openAPI.getPaths().get("/pet").getPost().getResponses().get("200").getContent().get("application/json").getExample());
+        assertFalse(openAPI.getPaths().get("/pet").getPost().getResponses().get("200").getContent().get("application/json").getExampleSetFlag());
+
+        assertNotNull(openAPI.getPaths().get("/pet").getPost().getRequestBody().getContent().get("application/json").getExample());
+        assertNotNull(openAPI.getPaths().get("/pet").getPost().getRequestBody().getContent().get("application/json").getExample());
+
+        assertTrue(openAPI.getPaths().get("/pet").getPost().getRequestBody().getContent().get("application/json").getExampleSetFlag());
+
+        assertNotNull(openAPI.getPaths().get("/object-with-null-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("foo").getValue());
+        assertTrue(openAPI.getPaths().get("/object-with-null-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("foo").getValueSetFlag());
+        assertNull(openAPI.getPaths().get("/object-with-null-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("bar").getValue());
+        assertTrue(openAPI.getPaths().get("/object-with-null-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("bar").getValueSetFlag());
+
+        assertNotNull(openAPI.getPaths().get("/object-with-null-in-schema-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("a").getValue());
+        assertTrue(openAPI.getPaths().get("/object-with-null-in-schema-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("a").getValueSetFlag());
+        assertNotNull(openAPI.getPaths().get("/object-with-null-in-schema-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("b").getValue());
+        assertTrue(openAPI.getPaths().get("/object-with-null-in-schema-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("b").getValueSetFlag());
+        assertNotNull(openAPI.getPaths().get("/object-with-null-in-schema-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("c").getValue());
+        assertTrue(openAPI.getPaths().get("/object-with-null-in-schema-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("c").getValueSetFlag());
+        assertNull(openAPI.getPaths().get("/object-with-null-in-schema-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("d").getValue());
+        assertTrue(openAPI.getPaths().get("/object-with-null-in-schema-example").getGet().getResponses().get("200").getContent().get("application/json").getExamples().get("d").getValueSetFlag());
+
+
+        assertNull(openAPI.getComponents().getSchemas().get("ObjectWithNullExample").getExample());
+        assertTrue(openAPI.getComponents().getSchemas().get("ObjectWithNullExample").getExampleSetFlag());
+
+        assertNotNull(openAPI.getComponents().getSchemas().get("ObjectWithNullInSchemaExample").getExample());
+        assertTrue(openAPI.getComponents().getSchemas().get("ObjectWithNullInSchemaExample").getExampleSetFlag());
+
+        assertNotNull(((Schema)openAPI.getComponents().getSchemas().get("ObjectWithNullPropertyExample").getProperties().get("a")).getExample());
+        assertTrue(((Schema)openAPI.getComponents().getSchemas().get("ObjectWithNullPropertyExample").getProperties().get("a")).getExampleSetFlag());
+        assertNull(((Schema)openAPI.getComponents().getSchemas().get("ObjectWithNullPropertyExample").getProperties().get("b")).getExample());
+        assertTrue(((Schema)openAPI.getComponents().getSchemas().get("ObjectWithNullPropertyExample").getProperties().get("b")).getExampleSetFlag());
+
+        assertNull(openAPI.getComponents().getSchemas().get("StringWithNullExample").getExample());
+        assertTrue(openAPI.getComponents().getSchemas().get("StringWithNullExample").getExampleSetFlag());
+
+        assertNull(openAPI.getComponents().getSchemas().get("ArrayWithNullArrayExample").getExample());
+        assertTrue(openAPI.getComponents().getSchemas().get("ArrayWithNullArrayExample").getExampleSetFlag());
+
+        assertNull(((ArraySchema)openAPI.getComponents().getSchemas().get("ArrayWithNullItemExample")).getItems().getExample());
+        assertTrue(((ArraySchema)openAPI.getComponents().getSchemas().get("ArrayWithNullItemExample")).getItems().getExampleSetFlag());
+    }
+
     @Test
     public void testIssueFlattenAdditionalPropertiesSchemaInlineModelTrue() {
         OpenAPIV3Parser openApiParser = new OpenAPIV3Parser();

modules/swagger-parser-v3/src/test/resources/media-type-null-example.yaml

@@ -0,0 +1,212 @@
+openapi: "3.0.1"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: https://petstore3.swagger.io/api/v3
+paths:
+  /pet:
+    post:
+      tags:
+      - pet
+      summary: Add a new pet to the store
+      operationId: addPet
+      requestBody:
+        description: Pet object that needs to be added to the store
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/Pet'
+            example:
+              id: 10
+              name: kitty
+              tag: something
+        required: true
+      responses:
+        200:
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pet"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        200:
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pet"
+              example: null
+  /object-with-null-example:
+    get:
+      description: ''
+      responses:
+        '200':
+          description: ''
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ObjectWithNullExample'
+              examples:
+                foo:
+                  value: '{"foo": "bar"}'
+                bar:
+                  value: null
+
+  /object-with-null-in-schema-example:
+    get:
+      description: ''
+      responses:
+        '200':
+          description: ''
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ObjectWithNullInSchemaExample'
+              examples:
+                a:
+                  value: 5
+                b:
+                  value: 'test'
+                c:
+                  value: true
+                d:
+                  value: null
+
+
+  /object-with-null-property-example:
+    get:
+      description: ''
+      responses:
+        '200':
+          description: ''
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ObjectWithNullPropertyExample'
+
+  /string-with-null-example:
+    get:
+      description: ''
+      responses:
+        '200':
+          description: ''
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/StringWithNullExample'
+
+  /array-with-null-array-example:
+    get:
+      description: ''
+      responses:
+        '200':
+          description: ''
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ArrayWithNullArrayExample'
+
+  /array-with-null-item-example:
+    get:
+      description: ''
+      responses:
+        '200':
+          description: ''
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ArrayWithNullItemExample'
+
+  /arrey-with-null-in-array-example:
+    get:
+      description: ''
+      responses:
+        '200':
+          description: ''
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ArrayWithNullInArrayExample'
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+
+    ObjectWithNullExample:
+      type: object
+      properties:
+        foo:
+          type: string
+      nullable: true
+      example: null
+
+    ObjectWithNullInSchemaExample:
+      type: object
+      example:
+        a: 5
+        b: test
+        c: true
+        d: null
+
+    ObjectWithNullPropertyExample:
+      type: object
+      properties:
+        a:
+          type: integer
+          example: 5
+        b:
+          type: string
+          nullable: true
+          example: null
+
+    StringWithNullExample:
+      type: string
+      nullable: true
+      example: null
+
+    ArrayWithNullArrayExample:
+      type: array
+      items:
+        type: string
+      nullable: true
+      example: null
+
+    ArrayWithNullItemExample:
+      type: array
+      items:
+        type: string
+        nullable: true
+        example: null
+
+    ArrayWithNullInArrayExample:
+      type: array
+      items:
+        type: string
+        nullable: true
+      example: [foo, null]

pom.xml

@@ -369,7 +369,7 @@
         <swagger-parser-v2-version>1.0.55</swagger-parser-v2-version>
         <commons-io-version>2.6</commons-io-version>
         <slf4j-version>1.7.30</slf4j-version>
-        <swagger-core-version>2.1.7</swagger-core-version>
+        <swagger-core-version>2.1.10-SNAPSHOT</swagger-core-version>
         <swagger-core-v2-version>1.6.2</swagger-core-v2-version>
         <junit-version>4.13.1</junit-version>
         <testng-version>6.14.2</testng-version>