Add test to check HTTP method

Signed-off-by: Alan Cha <Alan.cha1@ibm.com>

Author: Alan-Cha

packages/openapi-to-graphql-cli/package-lock.json

@@ -28,8 +28,20 @@ export declare type ResponseSchemaAndNames = {
     responseSchemaNames?: SchemaNames;
     statusCode?: string;
 };
-export declare const OAS_OPERATIONS: string[];
+export declare enum HTTP_METHODS {
+    'get' = "get",
+    'put' = "put",
+    'post' = "post",
+    'patch' = "patch",
+    'delete' = "delete",
+    'options' = "options",
+    'head' = "head"
+}
 export declare const SUCCESS_STATUS_RX: RegExp;
+/**
+ * Given an HTTP method, convert it to the HTTP_METHODS enum
+ */
+export declare function methodToHttpMethod(method: string): HTTP_METHODS;
 /**
  * Resolves on a validated OAS 3 for the given spec (OAS 2 or OAS 3), or rejects
  * if errors occur.
@@ -172,7 +184,7 @@ export declare function trim(str: string, length: number): string;
  * Determines if the given "method" is indeed an operation. Alternatively, the
  * method could point to other types of information (e.g., parameters, servers).
  */
-export declare function isOperation(method: string): boolean;
+export declare function isHttpMethod(method: string): boolean;
 /**
  * Formats a string that describes an operation in the form:
  * {name of OAS} {HTTP method in ALL_CAPS} {operation path}