Feature/df 18875 cryptocompare inverse eth usd (#3049)

* CryptoCompare inverse behaviour

* changeset

* e2e test modified

* test renamed

* undo test changes

* undo test changes

Author: Subarna-Singh

.changeset/nasty-students-perform.md

@@ -0,0 +1,5 @@
+---
+'@chainlink/cryptocompare-adapter': minor
+---
+
+inverse behaviour to support BTC/ETH pair

packages/sources/cryptocompare/src/config/includes.json

@@ -0,0 +1,13 @@
+[
+  {
+    "from": "BTC",
+    "to": "ETH",
+    "includes": [
+      {
+        "from": "ETH",
+        "to": "BTC",
+        "inverse": true
+      }
+    ]
+  }
+]

packages/sources/cryptocompare/src/endpoint/crypto.ts

@@ -14,6 +14,12 @@ export const endpoint = new CryptoPriceEndpoint({
   customRouter: (_req, adapterConfig) => {
     return adapterConfig.WS_ENABLED ? 'ws' : 'rest'
   },
+  requestTransforms: [
+    (req) => {
+      req.requestContext.data.base = req.requestContext.data.base.toUpperCase()
+      req.requestContext.data.quote = req.requestContext.data.quote?.toUpperCase()
+    },
+  ],
   inputParameters: cryptoInputParams,
   overrides: overrides.cryptocompare,
 })

packages/sources/cryptocompare/src/index.ts

@@ -2,12 +2,14 @@ import { expose, ServerInstance } from '@chainlink/external-adapter-framework'
 import { PriceAdapter } from '@chainlink/external-adapter-framework/adapter'
 import { crypto, vwap, volume, marketcap } from './endpoint'
 import { config } from './config'
+import includes from './config/includes.json'
 
 export const adapter = new PriceAdapter({
   name: 'CRYPTOCOMPARE',
   defaultEndpoint: 'crypto',
   config,
   endpoints: [crypto, vwap, volume, marketcap],
+  includes,
   rateLimiting: {
     tiers: {
       free: {