mercurial/testing/storage.py

39997:dbcb466d0065

        self.assertTrue(f.cmp(nullid, b'foo'))

        with self.assertRaises(error.LookupError):
            f.cmp(b'\x01' * 20, b'irrelevant')

        self.assertEqual(f.revdiff(nullrev, nullrev), b'')

        with self.assertRaises(IndexError):
            f.revdiff(0, nullrev)

        with self.assertRaises(IndexError):
            f.revdiff(nullrev, 0)

        with self.assertRaises(IndexError):
            f.revdiff(0, 0)

        # Emitting empty list is an empty generator.
        gen = f.emitrevisions([])
        with self.assertRaises(StopIteration):
            next(gen)

        self.assertFalse(f.renamed(node))

        self.assertFalse(f.cmp(node, fulltext))
        self.assertTrue(f.cmp(node, fulltext + b'extra'))

        self.assertEqual(f.revdiff(0, 0), b'')
        self.assertEqual(f.revdiff(nullrev, 0),
                         b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07%s' %
                         fulltext)

        self.assertEqual(f.revdiff(0, nullrev),
                         b'\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x00')

        # Emitting a single revision works.
        gen = f.emitrevisions([node])
        rev = next(gen)

        self.assertTrue(f.cmp(node1, fulltext0))
        self.assertTrue(f.cmp(node2, fulltext1))

        with self.assertRaises(error.LookupError):
            f.cmp(b'\x01' * 20, b'irrelevant')

        self.assertEqual(f.revdiff(0, 1),
                         b'\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x04\x01' +
                         fulltext1)

        self.assertEqual(f.revdiff(0, 2),
                         b'\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x04\x02' +
                         fulltext2)

        # Nodes should be emitted in order.
        gen = f.emitrevisions([node0, node1, node2], revisiondata=True)

        rev = next(gen)

39998:2f80eaf38ed4

        self.assertTrue(f.cmp(nullid, b'foo'))

        with self.assertRaises(error.LookupError):
            f.cmp(b'\x01' * 20, b'irrelevant')

        # Emitting empty list is an empty generator.
        gen = f.emitrevisions([])
        with self.assertRaises(StopIteration):
            next(gen)

        self.assertFalse(f.renamed(node))

        self.assertFalse(f.cmp(node, fulltext))
        self.assertTrue(f.cmp(node, fulltext + b'extra'))

        # Emitting a single revision works.
        gen = f.emitrevisions([node])
        rev = next(gen)

        self.assertTrue(f.cmp(node1, fulltext0))
        self.assertTrue(f.cmp(node2, fulltext1))

        with self.assertRaises(error.LookupError):
            f.cmp(b'\x01' * 20, b'irrelevant')

        # Nodes should be emitted in order.
        gen = f.emitrevisions([node0, node1, node2], revisiondata=True)

        rev = next(gen)