Merge pull request #2165 from oasisprotocol/lw/test-consensus-fee

Test hardcoded Consensus transaction fee

Author: lukaw3d

.changelog/2165.internal.md

@@ -0,0 +1 @@
+Test hardcoded Consensus transaction fee

playwright/tests/monitor-consensus-transfer-fee.spec.ts

@@ -0,0 +1,50 @@
+import { test, expect } from '@playwright/test'
+import { E2EWindow } from '../../src/app/pages/E2EPage/E2EWindow'
+
+for (const net of ['mainnet', 'testnet']) {
+  test(`Check if hardcoded consensus fee needs to be updated (setFeeAmount(oasis.quantity.fromBigInt(0n))) : ${net}`, async ({
+    page,
+  }) => {
+    await page.goto('/e2e')
+
+    const estimatedGas = await page.evaluate(
+      async ([net]) => {
+        const { oasis, grpcWeb } = window as E2EWindow
+
+        const nic =
+          net === 'mainnet'
+            ? new oasis.client.NodeInternal('https://grpc.oasis.io')
+            : new oasis.client.NodeInternal('https://testnet.grpc.oasis.io')
+
+        function toCBOR(v) {
+          // gRPC cannot handle nil arguments unmarshalled from CBOR, so we use a special case to
+          // marshal `nil` to an empty byte string.
+          if (v == null) return new Uint8Array()
+          return oasis.misc.toCBOR(v)
+        }
+        function createMethodDescriptorUnary(serviceName, methodName) {
+          const MethodType = grpcWeb.MethodType
+          return new grpcWeb.MethodDescriptor(
+            `/oasis-core.${serviceName}/${methodName}`,
+            MethodType.UNARY,
+            null as any,
+            null as any,
+            toCBOR,
+            oasis.misc.fromCBOR,
+          )
+        }
+        const methodDescriptorConsensusMinGasPrice = createMethodDescriptorUnary('Consensus', 'MinGasPrice')
+
+        // `const minPrice = await nic.consensusMinGasPrice()` in next version
+        const minPrice = await nic['callUnary']<undefined, Uint8Array>(
+          methodDescriptorConsensusMinGasPrice,
+          undefined,
+        )
+        return oasis.quantity.toBigInt(minPrice).toString()
+      },
+      [net] as const,
+    )
+
+    expect(estimatedGas).toBe('0')
+  })
+}

src/app/pages/E2EPage/E2EWindow.d.ts

@@ -4,6 +4,7 @@ import * as nexus from 'vendors/nexus'
 import * as oasis from '@oasisprotocol/client'
 import * as oasisRT from '@oasisprotocol/client-rt'
 import * as encryption from '../../state/persist/encryption'
+import * as grpcWeb from 'grpc-web'
 import { Store } from '@reduxjs/toolkit'
 import { RootState } from '../../../types'
 
@@ -15,6 +16,7 @@ interface _E2EWindow extends Window {
   oasisRT: typeof oasisRT
   encryption: typeof encryption
   store: Store<RootState>
+  grpcWeb: typeof grpcWeb
 }
 
 export type E2EWindow = _E2EWindow & typeof globalThis

src/app/pages/E2EPage/index.tsx

@@ -12,6 +12,7 @@ import * as nexus from 'vendors/nexus'
 import * as oasis from '@oasisprotocol/client'
 import * as oasisRT from '@oasisprotocol/client-rt'
 import * as encryption from 'app/state/persist/encryption'
+import * as grpcWeb from 'grpc-web'
 import { useDispatch, useStore } from 'react-redux'
 import { walletActions } from '../../state/wallet'
 import { AlertBox, AlertBoxStatus } from '../../components/AlertBox'
@@ -45,6 +46,7 @@ function ExposeInternals() {
     window.oasis = oasis
     window.oasisRT = oasisRT
     window.encryption = encryption
+    window.grpcWeb = grpcWeb
     window.store = store
     return () => {
       // Keep globals even after redirecting away