feat(ns-openapi-3-0): add Security Schema Object predicate

packages/apidom-ns-openapi-3-0/src/index.ts

@@ -44,6 +44,7 @@ export {
   isSchemaElement,
   isBooleanJsonSchemaElement,
   isSecurityRequirementElement,
+  isSecuritySchemeElement,
   isServerElement,
   isServerVariableElement,
   isMediaTypeElement,

packages/apidom-ns-openapi-3-0/src/predicates.ts

@@ -22,6 +22,7 @@ import ResponseElement from './elements/Response';
 import ResponsesElement from './elements/Responses';
 import SchemaElement from './elements/Schema';
 import SecurityRequirementElement from './elements/SecurityRequirement';
+import SecuritySchemeElement from './elements/SecurityScheme';
 import ServerElement from './elements/Server';
 import ServerVariableElement from './elements/ServerVariable';
 import MediaTypeElement from './elements/MediaType';
@@ -246,6 +247,16 @@ export const isSecurityRequirementElement = createPredicate(
   },
 );
 
+export const isSecuritySchemeElement = createPredicate(
+  ({ hasBasicElementProps, isElementType, primitiveEq }) => {
+    return (element: unknown): element is SecuritySchemeElement =>
+      element instanceof SecuritySchemeElement ||
+      (hasBasicElementProps(element) &&
+        isElementType('securityScheme', element) &&
+        primitiveEq('object', element));
+  },
+);
+
 export const isServerElement = createPredicate(
   ({ hasBasicElementProps, isElementType, primitiveEq }) => {
     return (element: unknown): element is ServerElement =>

packages/apidom-ns-openapi-3-0/test/predicates.ts

@@ -11,6 +11,7 @@ import {
   isOpenApi3_0Element,
   isServerElement,
   isServerVariableElement,
+  isSecuritySchemeElement,
   isPathsElement,
   isPathItemElement,
   isOperationElement,
@@ -23,6 +24,7 @@ import {
   ContactElement,
   ServerElement,
   ServerVariableElement,
+  SecuritySchemeElement,
   PathsElement,
   PathItemElement,
   OperationElement,
@@ -515,6 +517,59 @@ describe('predicates', function () {
     });
   });
 
+  context('isSecuritySchemeElement', function () {
+    context('given SecuritySchemeElement instance value', function () {
+      specify('should return true', function () {
+        const element = new SecuritySchemeElement();
+
+        assert.isTrue(isSecuritySchemeElement(element));
+      });
+    });
+
+    context('given subtype instance value', function () {
+      specify('should return true', function () {
+        class SecuritySchemeSubElement extends SecuritySchemeElement {}
+
+        assert.isTrue(isSecuritySchemeElement(new SecuritySchemeSubElement()));
+      });
+    });
+
+    context('given non SecuritySchemeElement instance value', function () {
+      specify('should return false', function () {
+        assert.isFalse(isSecuritySchemeElement(1));
+        assert.isFalse(isSecuritySchemeElement(null));
+        assert.isFalse(isSecuritySchemeElement(undefined));
+        assert.isFalse(isSecuritySchemeElement({}));
+        assert.isFalse(isSecuritySchemeElement([]));
+        assert.isFalse(isSecuritySchemeElement('string'));
+      });
+    });
+
+    specify('should support duck-typing', function () {
+      const securitySchemeElementDuck = {
+        _storedElement: 'securityScheme',
+        _content: [],
+        primitive() {
+          return 'object';
+        },
+        get element() {
+          return this._storedElement;
+        },
+      };
+
+      const securitySchemeElementSwan = {
+        _storedElement: undefined,
+        _content: undefined,
+        primitive() {
+          return 'swan';
+        },
+      };
+
+      assert.isTrue(isSecuritySchemeElement(securitySchemeElementDuck));
+      assert.isFalse(isSecuritySchemeElement(securitySchemeElementSwan));
+    });
+  });
+
   context('isPathsElement', function () {
     context('given PathsElement instance value', function () {
       specify('should return true', function () {