Test - Add test for string and number literal

test/evaluate1.test.ts

@@ -0,0 +1,25 @@
+import { Evaluate } from '../src/evaluate';
+import {
+  CompletionRecord,
+  ValueString,
+} from '../src/internal-types/CompletionRecord';
+
+import { ParseScript } from '../src/parse';
+
+describe('evaluate literals', () => {
+  it('for 123', () => {
+    const node = ParseScript(`123`);
+    const returnVal = Evaluate(node);
+
+    expect(returnVal).toBeInstanceOf(CompletionRecord);
+    expect(returnVal[ValueString]?.value).toBe(123);
+  });
+
+  it('for "abc"', () => {
+    const node = ParseScript(`'abc'`);
+    const returnVal = Evaluate(node);
+
+    expect(returnVal).toBeInstanceOf(CompletionRecord);
+    expect(returnVal[ValueString]?.value).toBe('abc');
+  });
+});