tests: Add EscrowAccount type extraction and make package.json sufficient (#861)

tests/escrow/Anchor.toml

@@ -6,4 +6,4 @@ wallet = "~/.config/solana/id.json"
 escrow = "Fg6PaFpoGXkYsidMpWTK6W2BeZ7FEfcYkg476zPFsLnS"
 
 [scripts]
-test = "ts-mocha -t 1000000 tests/*.ts"
+test = "yarn run ts-mocha -t 1000000 tests/*.ts"

tests/escrow/package.json

@@ -4,10 +4,14 @@
     "@project-serum/serum": "latest",
     "@solana/spl-token": "latest",
     "@solana/web3.js": "latest",
+    "@types/chai": "^4.2.22",
     "@types/mocha": "^9.0.0",
     "@types/node": "^14.14.37",
     "bn.js": "^5.2.0",
     "camelcase": "^6.2.0",
-    "chai": "^4.3.4"
+    "chai": "^4.3.4",
+    "mocha": "^9.1.2",
+    "ts-mocha": "^8.0.0",
+    "typescript": "^4.4.3"
   }
 }

tests/escrow/tests/escrow.ts

@@ -1,14 +1,15 @@
 import * as anchor from "../../../ts";
-import  { Program, BN } from "../../../ts";
+import  { Program, BN, IdlAccounts } from "../../../ts";
 import {
-	SYSVAR_RENT_PUBKEY,
 	PublicKey,
 	Keypair,
 	SystemProgram,
 } from '@solana/web3.js';
 import { TOKEN_PROGRAM_ID, Token } from "@solana/spl-token";
 import { assert } from "chai";
-import { Escrow } from '../target/types/escrow';
+import { Escrow } from "../target/types/escrow";
+
+type EscrowAccount = IdlAccounts<Escrow>["escrowAccount"];
 
 describe("escrow", () => {
   const provider = anchor.Provider.env();
@@ -101,7 +102,6 @@ describe("escrow", () => {
           escrowAccount: escrowAccount.publicKey,
           systemProgram: SystemProgram.programId,
           tokenProgram: TOKEN_PROGRAM_ID,
-          rent: SYSVAR_RENT_PUBKEY,
         },
         signers: [escrowAccount],
       }
@@ -119,7 +119,7 @@ describe("escrow", () => {
       initializerTokenAccountA
     );
 
-    let _escrowAccount = await program.account.escrowAccount.fetch(
+    let _escrowAccount: EscrowAccount = await program.account.escrowAccount.fetch(
       escrowAccount.publicKey
     );
 
@@ -197,7 +197,6 @@ describe("escrow", () => {
           escrowAccount: newEscrow.publicKey,
           systemProgram: SystemProgram.programId,
           tokenProgram: TOKEN_PROGRAM_ID,
-          rent: SYSVAR_RENT_PUBKEY,
         },
         signers: [newEscrow],
       }