From 58683d0eb015c101bca7f385b0a18049919b819a Mon Sep 17 00:00:00 2001
From: adam-urbanczyk <adam.jan.urbanczyk@gmail.com>
Date: Sun, 22 May 2016 21:39:54 +0200
Subject: [PATCH] Testcase for symmetric extrusion

Added a test case for symmetric extrusion operation.
---
 tests/TestCadQuery.py | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/tests/TestCadQuery.py b/tests/TestCadQuery.py
index 7947ee1..f12165a 100644
--- a/tests/TestCadQuery.py
+++ b/tests/TestCadQuery.py
@@ -1387,3 +1387,27 @@ class TestCadQuery(BaseTest):
         result =topOfLid.union(bottom)
 
         self.saveModel(result)
+        
+    def testExtrude(self):
+        """
+        Test symmetric extrude
+        """
+        r = 1.
+        h = 1.
+        decimal_places = 9.
+        
+        #extrude symmetrically
+        s = Workplane("XY").circle(r).extrude(h,both=True)
+        
+        top_face = s.faces(">Z")
+        bottom_face = s.faces("<Z")
+        
+        #calculate the distance between the top and the bottom face        
+        delta = top_face.val().Center().sub(bottom_face.val().Center())
+
+        self.assertTupleAlmostEquals(delta.toTuple(),
+                                     (0.,0.,2.*h),
+                                     decimal_places)
+        
+        
+