chore: try to mock signer

test/core/clearingHouse/ClearingHouse.test.ts

@@ -0,0 +1,52 @@
+import { JsonRpcProvider } from '@ethersproject/providers';
+import Big from 'big.js';
+import { Signer } from "@ethersproject/abstract-signer"
+import { SupportedChainId, PerpetualProtocol, getTransaction, PositionSide } from '../../../src';
+jest.mock("../../../src/transactionSender", () => {
+  return {
+    getTransaction: jest.fn().mockResolvedValue(null)
+  }
+})
+
+
+
+const mockSigner = {
+  getChainId:() => SupportedChainId.OPTIMISTIC_ETHEREUM,
+  getAddress: () => "",
+  provider: new JsonRpcProvider("")
+} as unknown as Signer
+
+
+describe("ClearingHouse", () => {
+  let perp: PerpetualProtocol
+  beforeAll(async () => {
+    perp = new PerpetualProtocol({
+      chainId: SupportedChainId.OPTIMISTIC_ETHEREUM,
+      providerConfigs: [
+        {
+          rpcUrl: "https://mainnet.optimism.io",
+        },
+      ],
+    })
+    await perp.init()
+    await perp.connect({signer: mockSigner})
+  })
+  it("Create position with correct param", async () => {
+    const tickerSymbol = "ETHUSD"
+    const slippage = new Big(0.02) // remember to transformed to Big type
+    const amountInput = new Big(100) // remember to transformed to Big type
+    const side = PositionSide.LONG
+    const isAmountInputBase = false // we are not using base token to open a long position here.
+
+    const newPositionDraft = perp.clearingHouse?.createPositionDraft({
+      tickerSymbol,
+      side,
+      amountInput,
+      isAmountInputBase,
+    })
+
+    await perp.clearingHouse?.openPosition(newPositionDraft!, slippage)
+    expect(getTransaction).toBeCalled()
+  })
+
+})