feat: generate mock response

vitest/helpers.ts

@@ -1,10 +1,15 @@
 import { env, createExecutionContext, Parameters } from "cloudflare:test";
 import { Context } from "../functions/types";
+import { TransactionReceipt, TransactionResponse } from "@ethersproject/providers";
+import { BigNumber } from "ethers";
 
-export function createContext(baseUrl: string, params: Record<string, string>) {
+export function createContext(baseUrl: string, paramsOrBody: Record<string, string>, method: "POST" | "GET" = "GET") {
   const url = new URL(baseUrl);
-  url.search = new URLSearchParams(params).toString();
-  const request = new Request(url);
+  url.search = new URLSearchParams(paramsOrBody).toString();
+  const request = new Request(url, {
+    method,
+    body: JSON.stringify(paramsOrBody),
+  });
   const ctx = createExecutionContext();
   const eventCtx: Parameters<(ctx: Context) => Promise<Response>>[0] = {
     request,
@@ -16,4 +21,68 @@ export function createContext(baseUrl: string, params: Record<string, string>) {
   return { request, ctx, eventCtx };
 }
 
-export const DEFAULT_BASE_URL = "http:/placeholder";
+// type ResponseTypes = "OK_TRANSFER_TO_TREASURY" | "USED_TRANSFER" | "NO_TRANSFER";
+
+// Creates the minimum transaction and receipts objects to mock a `permitTransferFrom` call
+export function createMockResponse(/*type?: ResponseTypes*/): { transactionReceipt: TransactionReceipt; transaction: TransactionResponse } {
+  const baseTransactionReceipt = {
+    to: "",
+    from: "",
+    contractAddress: "",
+    transactionIndex: 1,
+    root: "",
+    gasUsed: BigNumber.from(42),
+    logsBloom: "",
+    blockHash: "",
+    transactionHash: "",
+    logs: [
+      {
+        blockNumber: 1,
+        blockHash: "",
+        transactionIndex: 1,
+
+        removed: true,
+
+        address: "",
+        data: "",
+
+        topics: [""],
+
+        transactionHash: "",
+        logIndex: 1,
+      },
+    ],
+    blockNumber: 1,
+    confirmations: 1,
+    cumulativeGasUsed: BigNumber.from(42),
+    effectiveGasPrice: BigNumber.from(42),
+    byzantium: true,
+    type: 1,
+    status: 1,
+  };
+
+  const baseTransaction = {
+    nonce: 1,
+
+    gasLimit: BigNumber.from(32),
+
+    data: "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",
+    value: BigNumber.from(42),
+    chainId: 1,
+    hash: "",
+    blockNumber: 1,
+    blockHash: "",
+    timestamp: 1,
+    confirmations: 1,
+    from: "",
+    raw: "",
+    wait: async (/*confirmations?: number*/) => {
+      return baseTransactionReceipt;
+    },
+  };
+
+  return {
+    transaction: baseTransaction,
+    transactionReceipt: baseTransactionReceipt,
+  };
+}