diff --git a/test/packages/js-experimental/src/generated/programs/pubkeyTests.ts b/test/packages/js-experimental/src/generated/programs/pubkeyTests.ts
index 1698c72e..15e071c0 100644
--- a/test/packages/js-experimental/src/generated/programs/pubkeyTests.ts
+++ b/test/packages/js-experimental/src/generated/programs/pubkeyTests.ts
@@ -7,17 +7,6 @@
  */
 
 import { Address } from '@solana/addresses';
-import { Program } from '@solana/programs';
 
 export const PUBKEY_TESTS_PROGRAM_ADDRESS =
   'PubkeyTests1HoK8ypY1SxRMZTcVPm7R94rH4PZNhX7d' as Address<'PubkeyTests1HoK8ypY1SxRMZTcVPm7R94rH4PZNhX7d'>;
-
-export type PubkeyTestsProgram =
-  Program<'PubkeyTests1HoK8ypY1SxRMZTcVPm7R94rH4PZNhX7d'>;
-
-export function getPubkeyTestsProgram(): PubkeyTestsProgram {
-  return {
-    name: 'pubkeyTests',
-    address: PUBKEY_TESTS_PROGRAM_ADDRESS,
-  };
-}
diff --git a/test/packages/js-experimental/src/generated/types/ruleSet.ts b/test/packages/js-experimental/src/generated/types/ruleSet.ts
index 6e496f6f..a2746a3e 100644
--- a/test/packages/js-experimental/src/generated/types/ruleSet.ts
+++ b/test/packages/js-experimental/src/generated/types/ruleSet.ts
@@ -15,13 +15,13 @@ import {
   Codec,
   Decoder,
   Encoder,
-  GetDataEnumKind,
-  GetDataEnumKindContent,
+  GetDiscriminatedUnionVariant,
+  GetDiscriminatedUnionVariantContent,
   combineCodec,
   getArrayDecoder,
   getArrayEncoder,
-  getDataEnumDecoder,
-  getDataEnumEncoder,
+  getDiscriminatedUnionDecoder,
+  getDiscriminatedUnionEncoder,
   getStructDecoder,
   getStructEncoder,
   getTupleDecoder,
@@ -32,14 +32,14 @@ import {
 
 export type RuleSet =
   | { __kind: 'None' }
-  | { __kind: 'Single'; fields: [Address] }
-  | { __kind: 'ProgramAllowList'; fields: [Array<Address>] }
-  | { __kind: 'ProgramDenyList'; fields: [Array<Address>] };
+  | { __kind: 'Single'; fields: readonly [Address] }
+  | { __kind: 'ProgramAllowList'; fields: readonly [Array<Address>] }
+  | { __kind: 'ProgramDenyList'; fields: readonly [Array<Address>] };
 
 export type RuleSetArgs = RuleSet;
 
 export function getRuleSetEncoder(): Encoder<RuleSetArgs> {
-  return getDataEnumEncoder([
+  return getDiscriminatedUnionEncoder([
     ['None', getUnitEncoder()],
     [
       'Single',
@@ -61,7 +61,7 @@ export function getRuleSetEncoder(): Encoder<RuleSetArgs> {
 }
 
 export function getRuleSetDecoder(): Decoder<RuleSet> {
-  return getDataEnumDecoder([
+  return getDiscriminatedUnionDecoder([
     ['None', getUnitDecoder()],
     [
       'Single',
@@ -87,19 +87,33 @@ export function getRuleSetCodec(): Codec<RuleSetArgs, RuleSet> {
 }
 
 // Data Enum Helpers.
-export function ruleSet(kind: 'None'): GetDataEnumKind<RuleSetArgs, 'None'>;
+export function ruleSet(
+  kind: 'None'
+): GetDiscriminatedUnionVariant<RuleSetArgs, '__kind', 'None'>;
 export function ruleSet(
   kind: 'Single',
-  data: GetDataEnumKindContent<RuleSetArgs, 'Single'>['fields']
-): GetDataEnumKind<RuleSetArgs, 'Single'>;
+  data: GetDiscriminatedUnionVariantContent<
+    RuleSetArgs,
+    '__kind',
+    'Single'
+  >['fields']
+): GetDiscriminatedUnionVariant<RuleSetArgs, '__kind', 'Single'>;
 export function ruleSet(
   kind: 'ProgramAllowList',
-  data: GetDataEnumKindContent<RuleSetArgs, 'ProgramAllowList'>['fields']
-): GetDataEnumKind<RuleSetArgs, 'ProgramAllowList'>;
+  data: GetDiscriminatedUnionVariantContent<
+    RuleSetArgs,
+    '__kind',
+    'ProgramAllowList'
+  >['fields']
+): GetDiscriminatedUnionVariant<RuleSetArgs, '__kind', 'ProgramAllowList'>;
 export function ruleSet(
   kind: 'ProgramDenyList',
-  data: GetDataEnumKindContent<RuleSetArgs, 'ProgramDenyList'>['fields']
-): GetDataEnumKind<RuleSetArgs, 'ProgramDenyList'>;
+  data: GetDiscriminatedUnionVariantContent<
+    RuleSetArgs,
+    '__kind',
+    'ProgramDenyList'
+  >['fields']
+): GetDiscriminatedUnionVariant<RuleSetArgs, '__kind', 'ProgramDenyList'>;
 export function ruleSet<K extends RuleSetArgs['__kind'], Data>(
   kind: K,
   data?: Data
diff --git a/test/renderers/rust/instructionsPage.test.ts b/test/renderers/rust/instructionsPage.test.ts
index 308ec2b2..b544d9aa 100644
--- a/test/renderers/rust/instructionsPage.test.ts
+++ b/test/renderers/rust/instructionsPage.test.ts
@@ -1,5 +1,11 @@
 import test from 'ava';
-import { instructionArgumentNode, instructionNode, programNode, remainderSizeNode, stringTypeNode, visit } from '../../../src';
+import {
+  instructionArgumentNode,
+  instructionNode,
+  programNode,
+  stringTypeNode,
+  visit,
+} from '../../../src';
 import { getRenderMapVisitor } from '../../../src/renderers/rust/getRenderMapVisitor';
 import { codeContains } from './_setup';
 
@@ -32,7 +38,7 @@ test('it renders an instruction with a remainder str', (t) => {
         arguments: [
           instructionArgumentNode({
             name: 'memo',
-            type: stringTypeNode({ size: remainderSizeNode() }),
+            type: stringTypeNode('utf8'),
           }),
         ],
       }),