1 files changed, 21 insertions, 6 deletions
diff --git a/src/engine/SCons/Variables/VariablesTests.py b/src/engine/SCons/Variables/VariablesTests.py
index 7ee66ca..175a14b 100644
--- a/src/engine/SCons/Variables/VariablesTests.py
+++ b/src/engine/SCons/Variables/VariablesTests.py
@@ -32,6 +32,7 @@ import TestUnit
 import SCons.Variables
 import SCons.Subst
 import SCons.Warnings
+from SCons.Util import cmp
 
 
 class Environment(object):
@@ -49,12 +50,6 @@ class Environment(object):
         return key in self.dict
 
 
-def cmp(a, b):
-    """
-    Define cmp because it's no longer available in python3
-    Works under python 2 as well
-    """
-    return (a > b) - (a < b)
 
 
 def check(key, value, env):
@@ -492,9 +487,29 @@ B: b - alpha test
     default: 42
     actual: 54
 """
+
+        expectBackwards = """
+B: b - alpha test
+    default: 42
+    actual: 54
+
+ANSWER: THE answer to THE question
+    default: 42
+    actual: 54
+
+A: a - alpha test
+    default: 42
+    actual: 54
+"""
         text = opts.GenerateHelpText(env, sort=cmp)
         assert text == expectAlpha, text
 
+        textBool = opts.GenerateHelpText(env, sort=True)
+        assert text == expectAlpha, text
+
+        textBackwards = opts.GenerateHelpText(env, sort=lambda x, y: cmp(y, x))
+        assert textBackwards == expectBackwards, "Expected:\n%s\nGot:\n%s\n"%(textBackwards, expectBackwards) 
+
     def test_FormatVariableHelpText(self):
         """Test generating custom format help text"""
         opts = SCons.Variables.Variables()