test(OAS3.1): add tests for InfoObject.summary field

Refs OAI/OpenAPI-Specification#2251

Author: char0n

test/oas3_1/README.md

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+# OpenAPI 3.1 tests
+
+This directory contains tests for changes that made it into [OpenAPI 3.1 specification](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md).
+Changes are categorized into 4 distinct groups: 
+ 
+  - **Additions**
+  - **Changes**
+  - **Extended Functionality**
+  - **Breaking Changes**
+
+All changes are documented in OpenAPI 3.1 [changelog](https://github.com/OAI/OpenAPI-Specification/pull/2251).

test/oas3_1/additions/info-object-summary-field/data/with-field.json

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+{
+  "openapi": "3.0.0",
+  "info": {
+    "title": "Testing API",
+    "summary": "info object summary",
+    "version": "1.0.0"
+  },
+  "components": {
+    "schemas": {
+      "user": {
+        "properties": {
+          "id": {
+            "type": "integer"
+          }
+        }
+      }
+    }
+  },
+  "servers": [
+    {
+      "url": "http://localhost:8080"
+    }
+  ],
+  "paths": {
+    "/users": {
+      "get": {
+        "operationId": "getUserList",
+        "description": "Get list of users",
+        "responses": {
+          "200": {
+            "description": "List of users",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/user"
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}

test/oas3_1/additions/info-object-summary-field/data/without-field.json

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+{
+  "openapi": "3.0.0",
+  "info": {
+    "title": "Testing API",
+    "version": "1.0.0"
+  },
+  "components": {
+    "schemas": {
+      "user": {
+        "properties": {
+          "id": {
+            "type": "integer"
+          }
+        }
+      }
+    }
+  },
+  "servers": [
+  {
+    "url": "http://localhost:8080"
+  }
+  ],
+  "paths": {
+    "/users": {
+      "get": {
+        "operationId": "getUserList",
+        "description": "Get list of users",
+        "responses": {
+          "200": {
+            "description": "List of users",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/user"
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}

test/oas3_1/additions/info-object-summary-field/index.js

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+import SwaggerClient from '../../../../src';
+
+describe('OpenAPI Specification 3.1', () => {
+  describe('InfoObject.summary', () => {
+    describe('given definition without summary field', () => {
+      const spec = require('./data/without-field.json');
+
+      test('should not contain summary field in resolved spec', async () => {
+        const client = await new SwaggerClient({ spec });
+
+        expect(client.spec.info.summary).toBeUndefined();
+        expect(client.originalSpec.info.summary).toBeUndefined();
+      });
+    });
+
+    describe('given definition with summary field', () => {
+      const spec = require('./data/with-field.json');
+
+      test('should contain summary field in resolved spec', async () => {
+        const client = await new SwaggerClient({ spec });
+
+        expect(client.spec.info.summary).toStrictEqual('info object summary');
+        expect(client.originalSpec.info.summary).toStrictEqual('info object summary');
+      });
+    });
+  });
+});