diff --git a/src/testdir/test_channel.py b/src/testdir/test_channel.py
index 66b8c5e..d8830c5 100644
--- a/src/testdir/test_channel.py
+++ b/src/testdir/test_channel.py
@@ -75,6 +75,12 @@
                         print("sending: {}".format(cmd))
                         self.request.sendall(cmd.encode('utf-8'))
                         response = "ok"
+                    elif decoded[1] == 'do normal':
+                        # Send a normal command.
+                        cmd = '["normal","G$s more\u001b"]'
+                        print("sending: {}".format(cmd))
+                        self.request.sendall(cmd.encode('utf-8'))
+                        response = "ok"
                     elif decoded[1] == 'eval-works':
                         # Send an eval request.  We ignore the response.
                         cmd = '["eval","\\"foo\\" . 123", -1]'
@@ -93,6 +99,22 @@
                         print("sending: {}".format(cmd))
                         self.request.sendall(cmd.encode('utf-8'))
                         response = "ok"
+                    elif decoded[1] == 'an expr':
+                        # Send an expr request.
+                        cmd = '["expr","setline(\\"$\\", [\\"one\\",\\"two\\",\\"three\\"])"]'
+                        print("sending: {}".format(cmd))
+                        self.request.sendall(cmd.encode('utf-8'))
+                        response = "ok"
+                    elif decoded[1] == 'redraw':
+                        cmd = '["redraw",""]'
+                        print("sending: {}".format(cmd))
+                        self.request.sendall(cmd.encode('utf-8'))
+                        response = "ok"
+                    elif decoded[1] == 'redraw!':
+                        cmd = '["redraw","force"]'
+                        print("sending: {}".format(cmd))
+                        self.request.sendall(cmd.encode('utf-8'))
+                        response = "ok"
                     elif decoded[1] == 'empty-request':
                         cmd = '[]'
                         print("sending: {}".format(cmd))