fix(components): fix rendering for empty examples in responses (#9926)

Refs #9499

src/core/components/response.jsx

@@ -134,7 +134,7 @@ export default class Response extends React.Component {
     // Goal: find an example value for `sampleResponse`
     if(isOAS3) {
       sampleSchema = activeMediaType.get("schema")?.toJS()
-      if(examplesForMediaType) {
+      if(Map.isMap(examplesForMediaType) && !examplesForMediaType.isEmpty()) {
         const targetExamplesKey = this.getTargetExamplesKey()
         const targetExample = examplesForMediaType
           .get(targetExamplesKey, Map({}))
@@ -208,7 +208,7 @@ export default class Response extends React.Component {
                   </small>
                 ) : null}
               </div>
-              {examplesForMediaType ? (
+              {Map.isMap(examplesForMediaType) && !examplesForMediaType.isEmpty() ? (
                 <div className="response-control-examples">
                   <small className="response-control-examples__title">
                     Examples

test/e2e-cypress/e2e/features/response-empty-examples-object.cy.js

@@ -0,0 +1,16 @@
+/**
+ * @prettier
+ */
+
+describe("Response examples", () => {
+  it("should render a generated example when an empty examples object is provided", () => {
+    cy.visit("/?url=/documents/features/response-empty-examples-object.yaml")
+      .get("#operations-TEST-test")
+      .click()
+      .get(".example.microlight")
+      .should("exist")
+      .contains("{}")
+      .get(".examples-select-element")
+      .should("not.exist")
+  })
+})

test/e2e-cypress/static/documents/features/response-empty-examples-object.yaml

@@ -0,0 +1,25 @@
+openapi: 3.1.0
+info:
+  title: TEST
+  description: TEST
+  version: '1.0'
+servers:
+- url: localhost:8080
+tags:
+- name: TEST
+paths:
+  /test-endpoint:
+    get:
+      summary: Test
+      operationId: test
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                type: object
+              examples: {}
+      description: Test
+      tags:
+      - TEST