fix: can't calculate gas when program start with label (#547)

packages/runtime/src/parser/parser.ts

@@ -387,6 +387,7 @@ export function opcodeFromSentence (words: string[], counter: number, interprete
     if (opCodeMap[tealVersion][opCode.slice(0, opCode.length - 1)] !== undefined) {
       throw new RuntimeError(RUNTIME_ERRORS.TEAL.INVALID_LABEL, { line: counter }); // eg. `int:` is invalid label as `int` is an opcode
     }
+    interpreter.lineToCost[counter] = 0;
     return new Label([opCode], counter);
   }
 

packages/runtime/test/fixtures/basic-teal/assets/clear.teal

@@ -0,0 +1,4 @@
+#pragma version 5
+// default clear program
+int 1
+return

packages/runtime/test/fixtures/basic-teal/assets/label-first-line.teal

@@ -0,0 +1,26 @@
+#pragma version 5
+
+txn ApplicationID
+bz creation
+
+loop:
+load 0
+int 10
+<
+bz break
+
+load 0
+int 1
++
+store 0
+
+b loop
+
+break:
+
+int 1
+return
+
+creation:
+int 1
+return

packages/runtime/test/integration/gas-calculator.ts

@@ -0,0 +1,47 @@
+import { types as rtypes } from '@algo-builder/runtime';
+import { types } from "@algo-builder/web";
+import { expect } from "chai";
+
+import { AccountStore, Runtime } from "../../src/index";
+import { AppDeploymentFlags } from "../../src/types";
+import { useFixture } from "../helpers/integration";
+
+describe("TEALv5: Pooled Opcode Cost calculation", function () {
+  useFixture("basic-teal");
+  const john = new AccountStore(10e6);
+
+  let runtime: Runtime;
+  let approvalProgramFileName: string;
+  let clearProgramFileName: string;
+  let flags: AppDeploymentFlags;
+  let appID: number;
+  let appCallParam: types.AppCallsParam;
+  this.beforeAll(async function () {
+    runtime = new Runtime([john]); // setup test
+    approvalProgramFileName = 'label-first-line.teal';
+    clearProgramFileName = 'clear.teal';
+
+    flags = {
+      sender: john.account,
+      globalBytes: 1,
+      globalInts: 1,
+      localBytes: 1,
+      localInts: 1
+    };
+
+    appID = runtime.deployApp(approvalProgramFileName, clearProgramFileName, flags, {}).appID;
+
+    appCallParam = {
+      type: types.TransactionType.CallApp,
+      sign: types.SignType.SecretKey,
+      fromAccount: john.account,
+      appID: appID,
+      payFlags: { totalFee: 1000 }
+    };
+  });
+
+  it("Gas should be number", function () {
+    const receipt = runtime.executeTx(appCallParam) as rtypes.TxReceipt;
+    expect(receipt.gas).to.equal(98);
+  });
+});