Index: lnt/tests/__init__.py
===================================================================
--- lnt/tests/__init__.py
+++ lnt/tests/__init__.py
@@ -12,7 +12,7 @@
 
     Return the list of known built-in test names.
     """
-    return _known_tests
+    return sorted(_known_tests)
 
 
 def get_module(name):
Index: tests/lnttool/showtests.shtest
===================================================================
--- tests/lnttool/showtests.shtest
+++ tests/lnttool/showtests.shtest
@@ -1,5 +1,5 @@
 # RUN: lnt showtests | FileCheck %s
 # CHECK: Available tests:
 # CHECK-NEXT: compile    - Single file compile-time performance testing
-# CHECK-NEXT: test_suite - LLVM test-suite
 # CHECK-NEXT: nt         - LLVM test-suite compile and execution tests
+# CHECK-NEXT: test_suite - LLVM test-suite