Add test for alias

src/diagrams/c4/parser/c4Person.spec.js

@@ -39,6 +39,15 @@ Person(customerA, "Banking Customer A", "A customer of the bank, with personal b
     });
   });
 
+  it('should parse the alias', function () {
+    c4.parser.parse(`C4Context
+Person(customerA, "Banking Customer A")`);
+
+    expect(c4.parser.yy.getC4ShapeArray()[0]).toMatchObject({
+      alias: 'customerA',
+    });
+  });
+
   it('should parse the label', function () {
     c4.parser.parse(`C4Context
 Person(customerA, "Banking Customer A")`);