--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-context.py	Thu Dec 22 19:12:47 2011 +0200
@@ -0,0 +1,68 @@
+import common, hglib
+from hglib import context
+
+class test_context(common.basetest):
+    def test_non_existent(self):
+        self.assertRaises(ValueError, context.changectx, self.client, 'foo')
+
+    def test_basic(self):
+        self.append('a', 'a')
+        self.append('b', 'b')
+        rev0, node0 = self.client.commit('first', addremove=True)
+
+        self.append('c', 'c')
+        rev1, node1 = self.client.commit('second', addremove=True)
+
+        ctx = context.changectx(self.client, node0)
+
+        self.assertEquals(ctx.description(), 'first')
+        self.assertEquals(str(ctx), node0[:12])
+        self.assertEquals(ctx.node(), node0)
+        self.assertEquals(int(ctx), rev0)
+        self.assertEquals(ctx.rev(), rev0)
+        self.assertEquals(ctx.branch(), 'default')
+
+        self.assertTrue(ctx)
+
+        self.assertTrue('a' in ctx and 'b' in ctx)
+        self.assertFalse('c' in ctx)
+        self.assertEquals(list(ctx), ['a', 'b'])
+        self.assertEquals(ctx.files(), ['a', 'b'])
+
+        self.assertEquals(ctx.modified(), [])
+        self.assertEquals(ctx.added(), ['a', 'b'])
+        self.assertEquals(ctx.removed(), [])
+        self.assertEquals(ctx.ignored(), [])
+        self.assertEquals(ctx.clean(), [])
+
+        man = {'a' : '047b75c6d7a3ef6a2243bd0e99f94f6ea6683597',
+               'b' : '62452855512f5b81522aa3895892760bb8da9f3f'}
+        self.assertEquals(ctx.manifest(), man)
+
+        self.assertEquals([int(c) for c in ctx.parents()], [-1])
+        self.assertEquals(int(ctx.p1()), -1)
+        self.assertEquals(int(ctx.p2()), -1)
+
+        self.assertEquals([int(c) for c in ctx.children()], [1])
+        self.assertEquals([int(c) for c in ctx.descendants()], [0, 1])
+        self.assertEquals([int(c) for c in ctx.ancestors()], [0])
+
+        self.client.bookmark('bookmark', inactive=True, rev=node0)
+        self.assertEquals(ctx.bookmarks(), ['bookmark'])
+
+        self.client.tag('tag', rev=node0)
+        # tags are read on construction
+        self.assertEquals(context.changectx(self.client, node0).tags(), ['tag'])
+
+    def test_construction(self):
+        self.append('a', 'a')
+        rev0, node0 = self.client.commit('first', addremove=True)
+        tip = self.client.tip()
+
+        # from client.revision
+        ctx = context.changectx(self.client, tip)
+        self.assertEquals(ctx.node(), tip.node)
+
+        # from revset
+        ctx = context.changectx(self.client, 'all()')
+        self.assertEquals(ctx.node(), tip.node)