Implemented unit test for NewType.

server/src/tests/samples/newType1.py

@@ -0,0 +1,18 @@
+# This sample tests the type handler's handling of the
+# built-in NewType function.
+
+from typing import NewType
+
+MyString = NewType('MyString', str)
+
+def must_take_string(p1: str): pass
+
+must_take_string(MyString('hello'))
+
+def must_take_my_string(p1: MyString): pass
+
+must_take_my_string(MyString('hello'))
+
+# This should generate an error because 'hello'
+# isn't a valid MyString.
+must_take_my_string('hello')

server/src/tests/typeAnalyzer.test.ts

@@ -481,3 +481,10 @@ test('Super1', () => {
 
     validateResults(analysisResults, 4);
 });
+
+test('NewType1', () => {
+    let analysisResults = TestUtils.typeAnalyzeSampleFiles(['newType1.py']);
+
+    validateResults(analysisResults, 1);
+});
+