diff -r 13fe85fe396b -r c7cc40fd74f6 tests/test-revlog-ancestry.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-revlog-ancestry.py	Sat Jul 19 18:19:50 2008 +0200
@@ -0,0 +1,74 @@
+import os
+from mercurial import hg, ui, merge
+from hgext import graphlog
+
+u = ui.ui()
+
+repo = hg.repository(u, 'test1', create=1)
+os.chdir('test1')
+
+def commit(text, time):
+    repo.commit(text=text, date="%d 0" % time)
+
+def addcommit(name, time):
+    f = file(name, 'w')
+    f.write('%s\n' % name)
+    f.close()
+    repo.add([name])
+    commit(name, time)
+
+def update(rev):
+    merge.update(repo, rev, False, True, False)
+
+def merge_(rev):
+    merge.update(repo, rev, True, False, False)
+
+if __name__ == '__main__':
+    addcommit("A", 0)
+    addcommit("B", 1)
+
+    update(0)
+    addcommit("C", 2)
+
+    merge_(1)
+    commit("D", 3)
+
+    update(2)
+    addcommit("E", 4)
+    addcommit("F", 5)
+
+    update(3)
+    addcommit("G", 6)
+
+    merge_(5)
+    commit("H", 7)
+
+    update(5)
+    addcommit("I", 8)
+
+    # Ancestors
+    print 'Ancestors of 5'
+    for r in repo.changelog.ancestors(5):
+        print r, 
+
+    print '\nAncestors of 6 and 5'
+    for r in repo.changelog.ancestors(6, 5):
+        print r, 
+
+    print '\nAncestors of 5 and 4'
+    for r in repo.changelog.ancestors(5, 4):
+        print r, 
+
+    # Descendants
+    print '\n\nDescendants of 5'
+    for r in repo.changelog.descendants(5):
+        print r, 
+
+    print '\nDescendants of 5 and 3'
+    for r in repo.changelog.descendants(5, 3):
+        print r, 
+
+    print '\nDescendants of 5 and 4'
+    for r in repo.changelog.descendants(5, 4):
+        print r, 
+