env should be undefined if not explicitly passed in

src/test/common/terminals/helper.unit.test.ts

@@ -108,6 +108,19 @@ suite('Terminal Service helpers', () => {
             expect(safeTerminalOptions).to.not.have.property('PYTHONSTARTUP');
         });
 
+        test('Env should be undefined if not explicitly passed in ', () => {
+            const theTitle = 'Hello';
+            const terminal = 'Terminal Created';
+            when(terminalManager.createTerminal(anything())).thenReturn(terminal as any);
+
+            const term = helper.createTerminal(theTitle);
+
+            verify(terminalManager.createTerminal(anything())).once();
+            const args = capture(terminalManager.createTerminal).first()[0];
+            expect(term).to.be.deep.equal(terminal);
+            expect(args.env).to.be.deep.equal(undefined);
+        });
+
         test('Create terminal without a title', () => {
             const terminal = 'Terminal Created';
             when(terminalManager.createTerminal(anything())).thenReturn(terminal as any);