diff --git a/test/implementation-tests/003/test-fixture/node_modules/example-package-001/Employee.js b/test/implementation-tests/003/test-fixture/node_modules/example-package-001/Employee.js
new file mode 100644
index 0000000..a33c3e1
--- /dev/null
+++ b/test/implementation-tests/003/test-fixture/node_modules/example-package-001/Employee.js
@@ -0,0 +1,9 @@
+"use strict";
+const Person = require("./Person");
+
+module.exports = class Employee extends Person {
+    constructor(firstName, lastName, id) {
+        super(firstName, lastName);
+        this.id = id;
+    }
+}
diff --git a/test/implementation-tests/003/test-fixture/node_modules/example-package-001/Person.js b/test/implementation-tests/003/test-fixture/node_modules/example-package-001/Person.js
new file mode 100644
index 0000000..e9d1b98
--- /dev/null
+++ b/test/implementation-tests/003/test-fixture/node_modules/example-package-001/Person.js
@@ -0,0 +1,7 @@
+"use strict";
+module.exports = class Person {
+    constructor(firstName, lastName) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+    }
+}
diff --git a/test/implementation-tests/003/test-fixture/node_modules/example-package-002/Employee.js b/test/implementation-tests/003/test-fixture/node_modules/example-package-002/Employee.js
new file mode 100644
index 0000000..a33c3e1
--- /dev/null
+++ b/test/implementation-tests/003/test-fixture/node_modules/example-package-002/Employee.js
@@ -0,0 +1,9 @@
+"use strict";
+const Person = require("./Person");
+
+module.exports = class Employee extends Person {
+    constructor(firstName, lastName, id) {
+        super(firstName, lastName);
+        this.id = id;
+    }
+}
diff --git a/test/implementation-tests/003/test-fixture/node_modules/example-package-002/Person.js b/test/implementation-tests/003/test-fixture/node_modules/example-package-002/Person.js
new file mode 100644
index 0000000..e9d1b98
--- /dev/null
+++ b/test/implementation-tests/003/test-fixture/node_modules/example-package-002/Person.js
@@ -0,0 +1,7 @@
+"use strict";
+module.exports = class Person {
+    constructor(firstName, lastName) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+    }
+}