intercept and mock e2e swaps calls

e2e/fetchResponses.ts

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+/* eslint-disable @typescript-eslint/no-var-requires */
+
+// this file is ran locally with ts-node to fetch the responses from the swap quotes urls
+require('dotenv').config();
+const { writeFile } = require('fs/promises');
+
+const { createClient, http, sha256 } = require('viem');
+const { getBlockNumber } = require('viem/actions');
+
+const urls = require('./mocks/mock_swap_quotes_urls.json');
+
+(async () => {
+  const client = createClient({ transport: http(process.env.ETH_MAINNET_RPC) });
+  const blockNumber = await getBlockNumber(client);
+
+  // check initial blockNumber
+  console.log('OUTSIDE FUNCTION', blockNumber.toString());
+
+  await Promise.all(
+    urls.map(async (url: RequestInfo | URL) => {
+      const res = await fetch(url).then((r) => r.text());
+      const hash = sha256(url);
+
+      // check if blockNumber is the same the entire time
+      console.log('INSIDE FUNCTION', blockNumber.toString());
+      await writeFile(`e2e/mocks/swap_quotes/${hash}.json`, res);
+    }),
+  );
+})();

e2e/mockFetch.ts

@@ -0,0 +1,38 @@
+import { Hex, sha256 } from 'viem';
+
+export function mockFetch() {
+  const nativeFetch = window.fetch;
+  window.fetch = async function mockedFetch(
+    input: RequestInfo | URL,
+    init?: RequestInit,
+  ) {
+    if (input instanceof Request || !URL.canParse(input))
+      return nativeFetch(input, init);
+
+    const url = new URL(input);
+
+    if (url.hostname === 'swap.p.rainbow.me') {
+      console.log('Intercepting swap request:', {
+        url: url.href,
+        params: Object.fromEntries(url.searchParams),
+      });
+
+      const hash = sha256(url.href as Hex);
+      console.log('Looking for mock file with hash:', hash);
+
+      const response = await import(`./mocks/swap_quotes/${hash}.json`);
+      console.log('Mock response:', response);
+
+      if (!response)
+        throw new Error('no response for request', {
+          cause: { url: url.href, hash },
+        });
+
+      return new Response(JSON.stringify(response), {
+        headers: { 'Content-Type': 'application/json' },
+      });
+    }
+
+    return nativeFetch(input, init);
+  };
+}

e2e/mocks/swap_quotes/0x038dce7884e70b272cd1e2451c7ac6c7acead26c6fbd4593ac6840211a966072.json

@@ -0,0 +1 @@
+{"error":true,"error_code":504,"message":"no routes found"}

e2e/mocks/swap_quotes/0x05b313c513342f25909168d9f4116a1473a0e7b4d661ef5f420cf46fd919813b.json

@@ -0,0 +1 @@
+{"data":{"slippagePercent":2}}

e2e/mocks/swap_quotes/0x075d7d1eefb1fad7a225af737745bc9a5a099d33eacbce33d15ff5419eccd0fc.json

@@ -0,0 +1 @@
+{"sellTokenAddress":"0xeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee","sellTokenAsset":{"assetCode":"eth","decimals":18,"iconUrl":"https://rainbowme-res.cloudinary.com/image/upload/v1668565116/assets/ethereum/eth.png","name":"Ethereum","network":"mainnet","symbol":"ETH","networks":{"1":{"address":"eth","decimals":18},"10":{"address":"0x0000000000000000000000000000000000000000","decimals":18},"42161":{"address":"0x0000000000000000000000000000000000000000","decimals":18},"56":{"address":"0x2170ed0880ac9a755fd29b2688956bd959f933f8","decimals":18},"7777777":{"address":"0x0000000000000000000000000000000000000000","decimals":18},"81457":{"address":"0x0000000000000000000000000000000000000000","decimals":18},"8453":{"address":"0x0000000000000000000000000000000000000000","decimals":18}},"chainId":1,"price":{"value":3582.92,"available":true},"totalPrice":{"value":358292002.19248796,"available":true}},"buyTokenAddress":"0x2260fac5e5542a773aa44fbcfedf7c193bc2c599","buyTokenAsset":{"assetCode":"0x2260fac5e5542a773aa44fbcfedf7c193bc2c599","decimals":8,"iconUrl":"https://rainbowme-res.cloudinary.com/image/upload/v1693266228/assets/ethereum/0x2260fac5e5542a773aa44fbcfedf7c193bc2c599.png","name":"Wrapped 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e2e/mocks/swap_quotes/0x07feb3d58cf9bbbcc846d008e73c739e2a1a737497781513fe28049fc588da14.json

@@ -0,0 +1 @@
+{"data":{"slippagePercent":2}}

e2e/mocks/swap_quotes/0x08c6cc57e3fba32a3b2caea0dd4303370f9b4a58c389da6e30cfb5b32b70770b.json

@@ -0,0 +1 @@
+{"data":{"slippagePercent":2}}