diff --git a/src/codegen/helpers.ts b/src/codegen/helpers.ts
index d58ebdf..d9b4d97 100644
--- a/src/codegen/helpers.ts
+++ b/src/codegen/helpers.ts
@@ -4,14 +4,14 @@ import * as ts from 'typescript'
 
 import {capitalize} from '../utils'
 
-const EOSIO_CORE_CLASSES: string[] = []
+const ANTELOPE_CLASSES: string[] = []
 Object.keys(Antelope).map((key) => {
     if (Antelope[key].abiName) {
-        EOSIO_CORE_CLASSES.push(key)
+        ANTELOPE_CLASSES.push(key)
     }
 })
 
-export const EOSIO_CORE_TYPES = [
+export const ANTELOPE_TYPES = [
     'AssetType',
     'BlobType',
     'BlockIdType',
@@ -141,7 +141,7 @@ export function generateInterface(
 }
 
 export function findCoreClass(type: string): string | undefined {
-    for (const coreType of EOSIO_CORE_CLASSES) {
+    for (const coreType of ANTELOPE_CLASSES) {
         if (type.split('_').join('') === coreType.toLowerCase()) {
             return coreType
         }
diff --git a/test/data/abis/eosio.json b/test/data/abis/eosio.json
index 74e8d2d..a2961ef 100644
--- a/test/data/abis/eosio.json
+++ b/test/data/abis/eosio.json
@@ -42,7 +42,7 @@
                     "type": "uint16"
                 }
             ]
-        },
+        }
     ],
     "variants": [
         {
diff --git a/test/tests/codegen.ts b/test/tests/codegen.ts
index 75a6d38..d583e9f 100644
--- a/test/tests/codegen.ts
+++ b/test/tests/codegen.ts
@@ -4,10 +4,10 @@ import {assert} from 'chai'
 import fs from 'fs'
 import {Contract} from 'src/contract'
 
-// import Eosio from '$test/data/contracts/mock-eosio'
+import Eosio from '$test/data/contracts/mock-eosio'
 import EosioToken from '$test/data/contracts/mock-eosio.token'
 import RewardsGm from '$test/data/contracts/mock-rewards.gm'
-// import EosioMsig from '$test/data/contracts/mock-eosio.msig'
+import EosioMsig from '$test/data/contracts/mock-eosio.msig'
 
 import {generateCodegenContract, removeCodegenContracts} from '$test/utils/codegen'
 import {runGenericContractTests} from './generic'
@@ -22,14 +22,14 @@ interface Code {
 suite('codegen', async function () {
     // Contract instances
     const contracts = {
-        // eosio: {
-        //     mock: Eosio,
-        //     generated: null,
-        // },
-        // 'eosio.msig': {
-        //     mock: EosioMsig,
-        //     generated: null,
-        // },
+        eosio: {
+            mock: Eosio,
+            generated: null,
+        },
+        'eosio.msig': {
+            mock: EosioMsig,
+            generated: null,
+        },
         'eosio.token': {
             mock: EosioToken,
             generated: null,
@@ -124,6 +124,6 @@ suite('codegen', async function () {
         }
     })
     teardown(() => {
-        removeCodegenContracts()
+        // removeCodegenContracts()
     })
 })
diff --git a/test/tmp/eosio.ts b/test/tmp/eosio.ts
new file mode 100644
index 0000000..7482f08
--- /dev/null
+++ b/test/tmp/eosio.ts
@@ -0,0 +1,41 @@
+import {ABI, Blob, Name, Struct, UInt16, UInt32} from '@wharfkit/antelope'
+import {Contract as BaseContract, ContractArgs, PartialBy} from '../../src/index'
+export namespace Eosio {
+    export const abiBlob = Blob.from(
+        'DmVvc2lvOjphYmkvMS4yARdibG9ja19zaWduaW5nX2F1dGhvcml0eSJ2YXJpYW50X2Jsb2NrX3NpZ25pbmdfYXV0aG9yaXR5X3YwAhpibG9ja19zaWduaW5nX2F1dGhvcml0eV92MAACCXRocmVzaG9sZAZ1aW50MzIEa2V5cwxrZXlfd2VpZ2h0W10McmVncHJvZHVjZXIyAAQIcHJvZHVjZXIEbmFtZRJwcm9kdWNlcl9hdXRob3JpdHkXYmxvY2tfc2lnbmluZ19hdXRob3JpdHkDdXJsBnN0cmluZwhsb2NhdGlvbgZ1aW50MTYAAAAAAAEidmFyaWFudF9ibG9ja19zaWduaW5nX2F1dGhvcml0eV92MAEaYmxvY2tfc2lnbmluZ19hdXRob3JpdHlfdjA='
+    )
+    export const abi = ABI.from(abiBlob)
+    export class Contract extends BaseContract {
+        constructor(args: PartialBy<ContractArgs, 'abi' | 'account'>) {
+            super({
+                client: args.client,
+                abi: abi,
+                account: Name.from('eosio'),
+            })
+        }
+    }
+    export interface ActionNameParams {}
+    export namespace ActionParams {}
+    export namespace Types {
+        @Struct.type('block_signing_authority_v0')
+        export class BlockSigningAuthorityV0 extends Struct {
+            @Struct.field(UInt32)
+            threshold!: UInt32
+            @Struct.field(KeyWeight, {array: true})
+            keys!: KeyWeight[]
+        }
+        @Struct.type('regproducer2')
+        export class Regproducer2 extends Struct {
+            @Struct.field(Name)
+            producer!: Name
+            @Struct.field(Block_signing_authority)
+            producer_authority!: Block_signing_authority
+            @Struct.field('string')
+            url!: string
+            @Struct.field(UInt16)
+            location!: UInt16
+        }
+    }
+    const TableMap = {}
+}
+export default Eosio
diff --git a/test/utils/codegen.ts b/test/utils/codegen.ts
index 3b21715..1670e1c 100644
--- a/test/utils/codegen.ts
+++ b/test/utils/codegen.ts
@@ -5,7 +5,9 @@ import {codegen} from '../../src/codegen'
 
 export async function generateCodegenContract(contractName: string) {
     // Read the ABI from a JSON file
+    console.log({contractName, path: `test/data/abis/${contractName}.json` })
     const abiJson = fs.readFileSync(`test/data/abis/${contractName}.json`, {encoding: 'utf8'})
+    console.log({abiJson})
     const abi = new ABI(JSON.parse(abiJson))
 
     // Generate the code