diff --git a/lldb/packages/Python/lldbsuite/test/lldbpexpect.py b/lldb/packages/Python/lldbsuite/test/lldbpexpect.py
--- a/lldb/packages/Python/lldbsuite/test/lldbpexpect.py
+++ b/lldb/packages/Python/lldbsuite/test/lldbpexpect.py
@@ -50,6 +50,7 @@
                 self.expect_prompt()
 
         def expect(self, cmd, substrs=None):
+            self.assertNotIn('\n', cmd)
             self.child.sendline(cmd)
             if substrs is not None:
                 for s in substrs:
diff --git a/lldb/packages/Python/lldbsuite/test/terminal/TestEditline.py b/lldb/packages/Python/lldbsuite/test/terminal/TestEditline.py
--- a/lldb/packages/Python/lldbsuite/test/terminal/TestEditline.py
+++ b/lldb/packages/Python/lldbsuite/test/terminal/TestEditline.py
@@ -34,16 +34,13 @@
         """
         self.launch()
 
-        # Run help for different commands for escape variants to make sure each
-        # one matches uniquely (the buffer isn't cleared in between matches).
-        cases = [
-            ("print", "\x1b[1;5D", "\x1b[1;5C"),
-            ("step", "\x1b[5D", "\x1b[5C"),
-            ("exit", "\x1b\x1b[D", "\x1b\x1b[C"),
+        escape_pairs = [
+            ("\x1b[1;5D", "\x1b[1;5C"),
+            ("\x1b[5D", "\x1b[5C"),
+            ("\x1b\x1b[D", "\x1b\x1b[C"),
         ]
-        for (cmd, l_escape, r_escape) in cases:
-            self.expect("el {cmd_tail}{L}{cmd_head}{L}{L}h{R}p".format(
-                cmd_head=cmd[0], cmd_tail=cmd[1:], L=l_escape, R=r_escape),
-                substrs=["Syntax: %s" % cmd])
+        for (l_escape, r_escape) in escape_pairs:
+            self.expect("el rint{L}p{L}{L}h{R}p".format(
+                L=l_escape, R=r_escape), substrs=["Syntax: print"])
 
         self.quit()