3 files changed, 38 insertions, 1 deletions
diff --git a/lxml_builder.py b/src/beautifulsoup/builder/lxml_builder.py
index 9929918..2963a02 100644
--- a/lxml_builder.py
+++ b/src/beautifulsoup/builder/lxml_builder.py
@@ -1,5 +1,6 @@
 from lxml import etree
-from BeautifulSoup import TreeBuilder, Comment
+from beautifulsoup.element import Comment
+from beautifulsoup.builder import TreeBuilder
 
 class LXMLTreeBuilder(TreeBuilder):
 
diff --git a/src/beautifulsoup/tests/test_lxml.py b/src/beautifulsoup/tests/test_lxml.py
new file mode 100644
index 0000000..5211301
--- /dev/null
+++ b/src/beautifulsoup/tests/test_lxml.py
@@ -0,0 +1,6 @@
+from treebuilder import CompatibilityTest
+from beautifulsoup.builder.lxml_builder import LXMLTreeBuilder
+import unittest
+
+def additional_tests():
+    return unittest.TestSuite([CompatibilityTest(LXMLTreeBuilder())])
diff --git a/src/beautifulsoup/tests/treebuilder.py b/src/beautifulsoup/tests/treebuilder.py
new file mode 100644
index 0000000..25be325
--- /dev/null
+++ b/src/beautifulsoup/tests/treebuilder.py
@@ -0,0 +1,30 @@
+"""Tree builder compatibility suite.
+
+If you create a tree builder class, also create a test suite that
+subclasses this one. This test suite will parse various bits of
+well-formed HTML with your tree builder. Not every tree builder will
+handle bad HTML in the same way, but every builder should be able to
+handle _good_ HTML in the same way.
+"""
+
+import unittest
+from beautifulsoup import BeautifulSoup
+from test_soup import SoupTest
+
+class CompatibilityTest(SoupTest):
+
+    def __init__(self, builder):
+        self.builder = builder
+
+    _testMethodName = "test"
+
+    def test(self):
+        self.test_bare_string()
+        self.test_tag_nesting()
+
+    def test_bare_string(self):
+        self.assertSoupEquals("A bare string")
+
+    def test_tag_nesting(self):
+        self.assertSoupEquals("<b>Inside a B tag</b>")
+        self.assertSoupEquals("<p>A <i>nested <b>tag</b></i></p>")