diff --git a/tests/tlbgen.spec.ts b/tests/tlbgen.spec.ts
new file mode 100644
index 0000000..a1096e6
--- /dev/null
+++ b/tests/tlbgen.spec.ts
@@ -0,0 +1,54 @@
+import fs from 'fs'
+import path from 'path'
+import util from 'util'
+
+import { parse } from '../src'
+import { ast } from '../src'
+import { generate } from '../src/codegen/main'
+import { Program } from '../src/ast/nodes'
+
+import { X, loadX, storeX } from '../generated_test'
+import { beginCell } from 'ton'
+
+const fixturesDir = path.resolve(__dirname, 'fixtures')
+
+function deepEqual(object1: any, object2: any) {
+    const keys1 = Object.keys(object1);
+    const keys2 = Object.keys(object2);
+  
+    if (keys1.length !== keys2.length) {
+      return false;
+    }
+  
+    for (const key of keys1) {
+      const val1 = object1[key];
+      const val2 = object2[key];
+      const areObjects = isObject(val1) && isObject(val2);
+      if (
+        areObjects && !deepEqual(val1, val2) ||
+        !areObjects && val1 !== val2
+      ) {
+        return false;
+      }
+    }
+  
+    return true;
+  }
+  
+  function isObject(object: any) {
+    return object != null && typeof object === 'object';
+  }
+
+describe('parsing into intermediate representation using grammar', () => {
+  test('test.tlb can be parsed', () => {
+    expect.hasAssertions()
+
+
+    let xExpected: X = { kind: 'X', a: 827, b: 387 }
+    let cell = beginCell();
+    storeX(xExpected)(cell);
+    let xActual: X = loadX(cell.endCell().beginParse())
+    expect(deepEqual(xExpected, xActual)).toBeTruthy()
+    
+  })
+})