Checking for the decimals on the feeToken

package.json

@@ -30,6 +30,7 @@
     "mocha": "TS_NODE_PROJECT='./test/tsconfig.json' mocha --config=test/.mocharc.json --node-env=test --exit",
     "test": "npm run lint && npm run test:unit:cover && npm run test:integration:cover",
     "test:unit": "npm run mocha -- 'test/unit/**/*.test.ts'",
+    "test:fixed": "npm run mocha -- 'test/unit/FixedRateExchange.test.ts'",
     "test:integration": "npm run mocha --  'test/integration/**/*.test.ts'",
     "test:unit:cover": "nyc --report-dir coverage/unit npm run test:unit",
     "test:integration:cover": "nyc --report-dir coverage/integration --no-clean npm run test:integration",

src/contracts/NFTFactory.ts

@@ -1,6 +1,13 @@
 import { BigNumber } from 'ethers'
 import ERC721Factory from '@oceanprotocol/contracts/artifacts/contracts/ERC721Factory.sol/ERC721Factory.json'
-import { generateDtName, ZERO_ADDRESS, sendTx, getEventFromTx } from '../utils'
+import {
+  generateDtName,
+  ZERO_ADDRESS,
+  sendTx,
+  getEventFromTx,
+  getTokenDecimals,
+  LoggerInstance
+} from '../utils'
 import {
   AbiItem,
   FreCreationParams,
@@ -553,6 +560,16 @@ export class NftFactory extends SmartContractWithAddress {
     if (!dtParams.name || !dtParams.symbol) {
       ;({ name, symbol } = generateDtName())
     }
+
+    let feeTokenDecimals = 18
+    if (dtParams.feeToken !== ZERO_ADDRESS) {
+      try {
+        feeTokenDecimals = await getTokenDecimals(this.signer, dtParams.feeToken)
+      } catch (error) {
+        LoggerInstance.error('getTokenDecimals error', error)
+      }
+    }
+
     return {
       templateIndex: dtParams.templateIndex,
       strings: [dtParams.name || name, dtParams.symbol || symbol],
@@ -564,7 +581,7 @@ export class NftFactory extends SmartContractWithAddress {
       ],
       uints: [
         await this.amountToUnits(null, dtParams.cap, 18),
-        await this.amountToUnits(null, dtParams.feeAmount, 18)
+        await this.amountToUnits(null, dtParams.feeAmount, feeTokenDecimals)
       ],
       bytess: []
     }