Ejemplo n.º 1
0
    def test_absolute_url(self):
        p = self.p; c = self.c
        p1 = CorePackage("tmp1", create=True)
        p2 = CorePackage("tmp2", create=True)
        p3 = CorePackage("tmp3", create=True)
        t = p.create_tag("t")
        t1 = p1.create_tag("t1")
        t2 = p2.create_tag("t2")
        t3 = p3.create_tag("t3")
        p.create_import("i1", p1)
        p1.create_import("i2", p2)
        options = { "packages": {"p": p, "p1": p1},
                    "aliases": {p: "p", p1: "p1"},
                    "p": p, "p1": p1, "p2": p2, "p3": p3,
                  }
        c.addGlobal("options", options)
        # check on package
        self.check_path("options/p/absolute_url", "/p")
        self.check_path("options/p1/absolute_url", "/p1")
        try:
            self.check_path("options/p2/absolute_url", "/p/i1:i2/package")
            # it is either one or the other, we can't predict
        except AssertionError:
            self.check_path("options/p2/absolute_url", "/p1/i2/package")
        self.check_path("options/p/absolute_url/a/b/c", "/p/a/b/c")
        base = options["package_url"] = "http://localhost:1234/packages"
        self.check_path("options/p/absolute_url/a/b/c", base+"/p/a/b/c")
        self.check_path("options/p3/absolute_url|nothing", None)
        del options["package_url"]

        # check on element
        self.check_path("options/p/t/absolute_url", "/p/t")
        self.check_path("options/p1/t1/absolute_url", "/p1/t1")
        try:
            self.check_path("options/p2/t2/absolute_url", "/p/i1:i2:t2")
            # it is either one or the other, we can't predict
        except AssertionError:
            self.check_path("options/p2/t2/absolute_url", "/p1/i2:t2")
        self.check_path("options/p/t/absolute_url/a/b/c", "/p/t/a/b/c")
        base = options["package_url"] = "http://localhost:1234/packages"
        self.check_path("options/p/t/absolute_url/a/b/c", base+"/p/t/a/b/c")
        self.check_path("options/p3/t3/absolute_url|nothing", None)
Ejemplo n.º 2
0
    if exists (filea): unlink (filea)
    if exists (fileb): unlink (fileb)

    p1 = Package(url1, create=True)
    p2 = Package(url2, create=True)
    p3 = Package(url3, create=True)
    p4 = Package(url4, create=True)
    p5 = Package(url5, create=True)
    p6 = Package(url6, create=True)
    p7 = Package(url7, create=True)

    assert p1._backend is p2._backend is p3._backend
    assert p4._backend is p5._backend is p6._backend is p7._backend
    assert p1._backend is not p4._backend

    p1.create_import("p2", p2)
    p1.create_import("p3", p3)
    p3.create_import("p4", p4)
    p3.create_import("p5", p5)
    p5.create_import("p6", p6)
    p5.create_import("p3", p3)
    p7.create_import("p5", p5) # will not be loaded again; just a decoy

    #trace_wrap_all(p1._backend)
    #trace_wrap_all(p4._backend)

    m4 = p4.create_media("m4", "http://example.com/m4.ogm")
    m6 = p6.create_media("m6", "http://example.com/m6.ogm")
    a3 = p3.create_annotation("a3", m4, 30, 39, "text/plain")
    a5 = p5.create_annotation("a5", m6, 50, 59, "text/plain")
    t2 = p2.create_tag("t2")
Ejemplo n.º 3
0
class TestImports(TestCase):
    def setUp(self):
        self.dirname = mkdtemp()
        self.db = join(self.dirname, "db")
        self.url = "sqlite:%s" % pathname2url(self.db)
        self.p1 = Package(self.url+";p1", create=True)
        self.p2 = Package(self.url+";p2", create=True)
        self.p3 = Package(self.url+";p3", create=True)
        self.p4 = Package(self.url+";p4", create=True)

        self.d1 = frozenset(((self.p1._backend, self.p1._id),))
        self.d2 = frozenset(((self.p2._backend, self.p2._id),))
        self.d3 = frozenset(((self.p3._backend, self.p3._id),))
        self.d4 = frozenset(((self.p4._backend, self.p4._id),))

    def _dependencies(self, p):
        return frozenset(
            (be, pid) for be, pdict in p._backends_dict.items()
                      for pid in pdict
        )

    def test_dependancies(self):
        p1, p2, p3, p4 = self.p1, self.p2, self.p3, self.p4
        d1, d2, d3, d4 = self.d1, self.d2, self.d3, self.d4
        dall = d1.union(d2).union(d3).union(d4)
        _dependencies = self._dependencies

        self.assertEqual(d1, _dependencies(p1))
        self.assertEqual(d2, _dependencies(p2))
        self.assertEqual(d3, _dependencies(p3))
        self.assertEqual(d4, _dependencies(p4))

        self.p2.create_import("p4", self.p4)
        self.assertEqual(d1, _dependencies(p1))
        self.assertEqual(d2.union(d4), _dependencies(p2))
        self.assertEqual(d3, _dependencies(p3))
        self.assertEqual(d4, _dependencies(p4))

        self.p1.create_import("p2", self.p2)
        self.assertEqual(d1.union(d2).union(d4), _dependencies(p1))
        self.assertEqual(d2.union(d4), _dependencies(p2))
        self.assertEqual(d3, _dependencies(p3))
        self.assertEqual(d4, _dependencies(p4))

        self.p3.create_import("p4", self.p4)
        self.assertEqual(d1.union(d2).union(d4), _dependencies(p1))
        self.assertEqual(d2.union(d4), _dependencies(p2))
        self.assertEqual(d3.union(d4), _dependencies(p3))
        self.assertEqual(d4, _dependencies(p4))

        self.p1.create_import("p3", self.p3)
        self.assertEqual(dall, _dependencies(p1))
        self.assertEqual(d2.union(d4), _dependencies(p2))
        self.assertEqual(d3.union(d4), _dependencies(p3))
        self.assertEqual(d4, _dependencies(p4))

        self.p4.create_import("p1", self.p1)
        self.assertEqual(dall, _dependencies(p1))
        self.assertEqual(dall, _dependencies(p2))
        self.assertEqual(dall, _dependencies(p3))
        self.assertEqual(dall, _dependencies(p4))

        self.p4["p1"].delete()
        self.assertEqual(dall, _dependencies(p1))
        self.assertEqual(d2.union(d4), _dependencies(p2))
        self.assertEqual(d3.union(d4), _dependencies(p3))
        self.assertEqual(d4, _dependencies(p4))

        self.p1["p3"].delete()
        self.assertEqual(d1.union(d2).union(d4), _dependencies(p1))
        self.assertEqual(d2.union(d4), _dependencies(p2))
        self.assertEqual(d3.union(d4), _dependencies(p3))
        self.assertEqual(d4, _dependencies(p4))

        self.p3["p4"].delete()
        self.assertEqual(d1.union(d2).union(d4), _dependencies(p1))
        self.assertEqual(d2.union(d4), _dependencies(p2))
        self.assertEqual(d3, _dependencies(p3))
        self.assertEqual(d4, _dependencies(p4))

        self.p1["p2"].delete()
        self.assertEqual(d1, _dependencies(p1))
        self.assertEqual(d2.union(d4), _dependencies(p2))
        self.assertEqual(d3, _dependencies(p3))
        self.assertEqual(d4, _dependencies(p4))

        self.p2["p4"].delete()
        self.assertEqual(d1, _dependencies(p1))
        self.assertEqual(d2, _dependencies(p2))
        self.assertEqual(d3, _dependencies(p3))
        self.assertEqual(d4, _dependencies(p4))

    def test_close_unimported(self):
        self.p1.create_import("p2", self.p2)
        self.p1.close()
        self.assert_(self.p1.closed)
        self.assert_(not self.p2.closed)
        self.assert_(not self.p3.closed)
        self.assert_(not self.p4.closed)

    def test_close_simply_imported(self):
        self.p1.create_import("p2", self.p2)
        self.assertRaises(ValueError, self.p2.close)
        self.assert_(not self.p1.closed)
        self.assert_(not self.p2.closed)
        self.assert_(not self.p3.closed)
        self.assert_(not self.p4.closed)

    def test_close_cycle(self):
        self.p1.create_import("p2", self.p2)
        self.p2.create_import("p1", self.p1)
        self.p1.create_import("p3", self.p3)
        self.p2.create_import("p4", self.p4)
        self.p1.close()
        self.assert_(self.p1.closed)
        self.assert_(self.p2.closed)
        self.assert_(not self.p3.closed)
        self.assert_(not self.p4.closed)

    def test_close_imported_cycle(self):
        self.p1.create_import("p2", self.p2)
        self.p2.create_import("p1", self.p1)
        self.p3.create_import("p1", self.p1)
        self.assertRaises(ValueError, self.p1.close)
        self.assert_(not self.p1.closed)
        self.assert_(not self.p2.closed)
        self.assert_(not self.p3.closed)
        self.assert_(not self.p4.closed)

    def test_close_multiple_cycles(self):
        self.p1.create_import("p2", self.p2)
        self.p1.create_import("p3", self.p3)
        self.p2.create_import("p4", self.p4)
        self.p3.create_import("p4", self.p4)
        self.p4.create_import("p1", self.p1)
        self.p2.close()
        self.assert_(self.p1.closed)
        self.assert_(self.p2.closed)
        self.assert_(self.p3.closed)
        self.assert_(self.p4.closed)

    def tearDown(self):
        try:
            if self.p1 and not self.p1.closed: self.p1.close()
            if self.p2 and not self.p2.closed: self.p2.close()
            if self.p3 and not self.p3.closed: self.p3.close()
            if self.p4 and not self.p4.closed: self.p4.close()
        except ValueError:
            pass
        unlink(self.db)
        rmdir(self.dirname)
Ejemplo n.º 4
0
class TestEvents(TestCase):
    def setUp(self):
        self.dirname = mkdtemp()
        self.db = join(self.dirname, "db")
        self.url = "sqlite:%s" % pathname2url(self.db)
        self.p1 = Package(self.url+";p1", create=True)
        self.p2 = Package(self.url+";p2", create=True)
        self.p3 = Package(self.url+";p3", create=True)
        self.buf = []
        self.callback_errors = []

    def tearDown(self):
        try:
            if self.p1 and not self.p1.closed: self.p1.close()
            if self.p2 and not self.p2.closed: self.p2.close()
            if self.p3 and not self.p3.closed: self.p3.close()
        except ValueError:
            pass
        unlink(self.db)
        rmdir(self.dirname)

    def default_handler(self, *args):
        self.buf.append(args)

    def attr_handler(self, obj, attr, val, pre=None):
        actual_val = getattr(obj, attr)
        if pre:
            if actual_val == val:
                self.callback_errors.append("%s should not be %r yet" %
                                            (attr, val))
        else:
            if actual_val != val:
                self.callback_errors.append("%s = %r, should be %r" %
                                            (attr, actual_val, val))
        self.default_handler(obj, attr, val)

    def meta_handler(self, obj, key, val, pre=None):
        actual_val = obj.get_meta(key, None)
        if pre:
            if actual_val == val:
                self.callback_errors.append("%s should not be %r yet" %
                                            (key, val))
        else:
            if actual_val != val:
                self.callback_errors.append("%s : %r, should be %r" %
                                            (key, actual_val, val))
        self.default_handler(obj, key, val)

    def elt_handler(self, pkg, elt, signal, params):
        self.default_handler(pkg, elt, signal, params)

    def test_create_media(self):
        hid = self.p1.connect("created::media", self.default_handler)
        m = self.p2.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])
        a = self.p2.create_annotation("a", m, 10, 20, "text/plain")
        self.assertEqual(self.buf, [])
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [(self.p1, m,),])
        del self.buf[:]
        self.p1.disconnect(hid)
        m = self.p1.create_media("m2", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])

    def test_create_annotation(self):
        hid = self.p1.connect("created::annotation", self.default_handler)
        m = self.p2.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])
        a = self.p2.create_annotation("a", m, 10, 20, "text/plain")
        self.assertEqual(self.buf, [])
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])
        a = self.p1.create_annotation("a", m, 10, 20, "text/plain")
        self.assertEqual(self.buf, [(self.p1, a,),])
        del self.buf[:]
        self.p1.disconnect(hid)
        a = self.p1.create_annotation("a2", m, 10, 20, "text/plain")
        self.assertEqual(self.buf, [])

    def test_create_relation(self):
        hid = self.p1.connect("created::relation", self.default_handler)
        r = self.p2.create_relation("r")
        self.assertEqual(self.buf, [])
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])
        r = self.p1.create_relation("r")
        self.assertEqual(self.buf, [(self.p1, r,),])
        del self.buf[:]
        self.p1.disconnect(hid)
        r = self.p1.create_relation("r2")
        self.assertEqual(self.buf, [])

    def test_create_list(self):
        hid = self.p1.connect("created::list", self.default_handler)
        L = self.p2.create_list("L")
        self.assertEqual(self.buf, [])
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])
        L = self.p1.create_list("L")
        self.assertEqual(self.buf, [(self.p1, L,),])
        del self.buf[:]
        self.p1.disconnect(hid)
        r = self.p1.create_relation("L2")
        self.assertEqual(self.buf, [])

    def test_create_tag(self):
        hid = self.p1.connect("created::tag", self.default_handler)
        t = self.p2.create_tag("t")
        self.assertEqual(self.buf, [])
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])
        t = self.p1.create_tag("t")
        self.assertEqual(self.buf, [(self.p1, t,),])
        del self.buf[:]
        self.p1.disconnect(hid)
        t = self.p1.create_tag("t2")
        self.assertEqual(self.buf, [])

    def test_create_query(self):
        hid = self.p1.connect("created::query", self.default_handler)
        q = self.p2.create_query("q", "text/plain")
        self.assertEqual(self.buf, [])
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])
        q = self.p1.create_query("q", "text/plain")
        self.assertEqual(self.buf, [(self.p1, q,),])
        del self.buf[:]
        self.p1.disconnect(hid)
        q = self.p1.create_query("q2", "text/plain")
        self.assertEqual(self.buf, [])

    def test_create_view(self):
        hid = self.p1.connect("created::view", self.default_handler)
        v = self.p2.create_view("v", "text/plain")
        self.assertEqual(self.buf, [])
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])
        v = self.p1.create_view("v", "text/plain")
        self.assertEqual(self.buf, [(self.p1, v,),])
        del self.buf[:]
        self.p1.disconnect(hid)
        v = self.p1.create_view("v2", "text/plain")
        self.assertEqual(self.buf, [])

    def test_create_resource(self):
        hid = self.p1.connect("created::resource", self.default_handler)
        r = self.p2.create_resource("r", "text/plain")
        self.assertEqual(self.buf, [])
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])
        r = self.p1.create_resource("r", "text/plain")
        self.assertEqual(self.buf, [(self.p1, r,),])
        del self.buf[:]
        self.p1.disconnect(hid)
        r = self.p1.create_resource("r2", "text/plain")
        self.assertEqual(self.buf, [])

    def test_create_import(self):
        hid = self.p1.connect("created::import", self.default_handler)
        i = self.p2.create_import("i", self.p1)
        self.assertEqual(self.buf, [])
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])
        i = self.p1.create_import("i", self.p2)
        self.assertEqual(self.buf, [(self.p1, i,),])
        del self.buf[:]
        self.p1.disconnect(hid)
        i = self.p1.create_import("i2", self.p3)
        self.assertEqual(self.buf, [])

    def test_create_any(self):
        self.p1.connect("created", self.default_handler)
        m = self.p2.create_media("m", "file:/tmp/foo.avi")
        self.assertEqual(self.buf, [])
        a = self.p2.create_annotation("a", m, 10, 20, "text/plain")
        self.assertEqual(self.buf, [])
        r = self.p2.create_relation("r")
        self.assertEqual(self.buf, [])
        L = self.p2.create_list("L")
        self.assertEqual(self.buf, [])
        t = self.p2.create_tag("t")
        self.assertEqual(self.buf, [])
        q = self.p2.create_query("q", "text/plain")
        self.assertEqual(self.buf, [])
        v = self.p2.create_view("v", "text/plain")
        self.assertEqual(self.buf, [])
        R = self.p2.create_resource("R", "text/plain")
        self.assertEqual(self.buf, [])
        i = self.p2.create_import("i", self.p1)
        self.assertEqual(self.buf, [])

        ref = []
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        ref += [(self.p1, m),]
        self.assertEqual(self.buf, ref)
        a = self.p1.create_annotation("a", m, 10, 20, "text/plain")
        ref += [(self.p1, a),]
        self.assertEqual(self.buf, ref)
        r = self.p1.create_relation("r")
        ref += [(self.p1, r),]
        self.assertEqual(self.buf, ref)
        L = self.p1.create_list("L")
        ref += [(self.p1, L),]
        self.assertEqual(self.buf, ref)
        t = self.p1.create_tag("t")
        ref += [(self.p1, t),]
        self.assertEqual(self.buf, ref)
        q = self.p1.create_query("q", "text/plain")
        ref += [(self.p1, q),]
        self.assertEqual(self.buf, ref)
        v = self.p1.create_view("v", "text/plain")
        ref += [(self.p1, v),]
        self.assertEqual(self.buf, ref)
        R = self.p1.create_resource("R", "text/plain")
        ref += [(self.p1, R),]
        self.assertEqual(self.buf, ref)
        i = self.p1.create_import("i", self.p2)
        ref += [(self.p1, i),]
        self.assertEqual(self.buf, ref)

    def test_closed(self):
        self.p1.connect("package-closed", self.default_handler)
        self.p2.close()
        self.assertEqual(self.buf, [])
        ref = [(self.p1, self.p1.url, self.p1.uri)]
        self.p1.close()
        self.assertEqual(self.buf, ref)

    def test_closed_disconnected(self):
        hid = self.p1.connect("package-closed", self.default_handler)
        self.p1.disconnect(hid)
        self.p1.close()
        self.assertEqual(self.buf, [])

    def test_modified_uri(self):
        hid1 = self.p1.connect("modified::uri", self.attr_handler)
        hid2 = self.p1.connect("pre-modified::uri", self.attr_handler, "pre")
        self.p2.uri = "urn:12345"
        self.assertEqual(self.buf, [])
        self.p1.uri = "urn:67890"
        self.assertEqual(self.buf, [(self.p1, "uri", "urn:67890"),]*2)
        self.assertEqual(self.callback_errors, [])
        del self.buf[:]
        self.p1.disconnect(hid1)
        self.p1.disconnect(hid2)
        self.p1.uri = "urn:abcdef"
        self.assertEqual(self.buf, [])

    def test_modified_any(self):
        hid1 = self.p1.connect("modified", self.attr_handler)
        hid2 = self.p1.connect("pre-modified", self.attr_handler, "pre")
        self.p2.uri = "urn:12345"
        self.assertEqual(self.buf, [])
        self.p1.uri = "urn:67890"
        self.assertEqual(self.buf, [(self.p1, "uri", "urn:67890"),]*2)
        self.assertEqual(self.callback_errors, [])
        del self.buf[:]
        self.p1.disconnect(hid1)
        self.p1.disconnect(hid2)
        self.p1.uri = "urn:abcdef"
        self.assertEqual(self.buf, [])

    def test_modified_meta(self):
        k = DC_NS_PREFIX + "creator"
        k2 = DC_NS_PREFIX + "title"
        hid1 = self.p1.connect("modified-meta::" + k, self.meta_handler)
        hid2 = self.p1.connect("pre-modified-meta::" + k, self.meta_handler, 1)
        self.p1.set_meta(k2, "hello world")
        self.assertEqual(self.buf, [])
        self.p2.set_meta(k, "pchampin")
        self.assertEqual(self.buf, [])
        self.p1.set_meta(k, "pchampin")
        self.assertEqual(self.buf, [(self.p1, k, "pchampin"),]*2)
        self.assertEqual(self.callback_errors, [])
        del self.buf[:]
        self.p1.del_meta(k2)
        self.assertEqual(self.buf, [])
        self.p2.del_meta(k)
        self.assertEqual(self.buf, [])
        self.p1.del_meta(k)
        self.assertEqual(self.buf, [(self.p1, k, None)]*2)
        self.assertEqual(self.callback_errors, [])
        del self.buf[:]
        self.p1.disconnect(hid1)
        self.p1.disconnect(hid2)
        self.p1.set_meta(k, "oaubert")
        self.assertEqual(self.buf, [])

    def test_modified_meta_any(self):
        k = DC_NS_PREFIX + "creator"
        hid1 = self.p1.connect("modified-meta", self.meta_handler)
        hid2 = self.p1.connect("pre-modified-meta", self.meta_handler, "pre")
        self.p2.set_meta(k, "pchampin")
        self.assertEqual(self.buf, [])
        self.p1.set_meta(k, "pchampin")
        self.assertEqual(self.buf, [(self.p1, k, "pchampin"),]*2)
        self.assertEqual(self.callback_errors, [])
        del self.buf[:]
        self.p2.del_meta(k)
        self.assertEqual(self.buf, [])
        self.p1.del_meta(k)
        self.assertEqual(self.buf, [(self.p1, k, None)]*2)
        self.assertEqual(self.callback_errors, [])
        del self.buf[:]
        self.p1.disconnect(hid1)
        self.p1.disconnect(hid2)
        self.p1.set_meta(k, "oaubert")
        self.assertEqual(self.buf, [])

    def test_modify_media(self):
        k = DC_NS_PREFIX + "creator"
        hid = self.p1.connect("media::modified", self.elt_handler)
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        m2 = self.p2.create_media("m", "file:/tmp/foo.avi")
        a = self.p1.create_annotation("a", m, 10, 20, "text/plain")
        self.assertEqual(self.buf, [])
        def do_changes(_=[1]):
            i = _[0] = _[0] + 1
            m.url = "file:/tmp/foo%s.avi" % i
            m2.url = "file:/tmp/foo%s.avi" % i
            m.set_meta(k, "creator%s" % i)
            a.end = 100 + i
            a.set_meta(k, "creator%s" % i)

        do_changes()
        self.assertEqual(self.buf, [(self.p1, m, "modified", ("url", m.url,)),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("media::pre-modified", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
                         [(self.p1, m, "pre-modified", ("url", m.url,)),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("media::modified-meta", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
                         [(self.p1, m, "modified-meta", (k, m.get_meta(k))),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("media::pre-modified-meta", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
            [(self.p1, m, "pre-modified-meta", (k, m.get_meta(k))),])
        del self.buf[:]
        self.p1.disconnect(hid)

        do_changes()
        self.assertEqual(self.buf, [])

    def test_modify_annotation(self):
        k = DC_NS_PREFIX + "creator"
        hid = self.p1.connect("annotation::modified", self.elt_handler)
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        m2 = self.p2.create_media("m", "file:/tmp/foo.avi")
        a = self.p1.create_annotation("a", m, 10, 20, "text/plain")
        a2 = self.p2.create_annotation("a", m2, 10, 20, "text/plain")
        self.assertEqual(self.buf, [])
        def do_changes(_=[1]):
            i = _[0] = _[0] + 1
            m.url = "file:/tmp/foo%s.avi" % i
            m2.url = "file:/tmp/foo%s.avi" % i
            m.set_meta(k, "creator%s" % i)
            a.end = 100 + i
            a.set_meta(k, "creator%s" % i)

        do_changes()
        self.assertEqual(self.buf, [(self.p1, a, "modified", ("end", a.end,)),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("annotation::pre-modified", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
                         [(self.p1, a, "pre-modified", ("end", a.end,)),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("annotation::modified-meta", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
                         [(self.p1, a, "modified-meta", (k, a.get_meta(k))),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("annotation::pre-modified-meta", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
            [(self.p1, a, "pre-modified-meta", (k, a.get_meta(k))),])
        del self.buf[:]
        self.p1.disconnect(hid)

        do_changes()
        self.assertEqual(self.buf, [])

    def test_modify_relation(self):
        k = DC_NS_PREFIX + "creator"
        hid = self.p1.connect("relation::modified-items", self.elt_handler)
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        m2 = self.p2.create_media("m", "file:/tmp/foo.avi")
        a = self.p1.create_annotation("a", m, 10, 20, "text/plain")
        a2 = self.p2.create_annotation("a", m2, 10, 20, "text/plain")
        r = self.p1.create_relation("r", members=[a, a,])
        r2 = self.p2.create_relation("r", members=[a2,])
        self.assertEqual(len(self.buf), 2) # initial members cause changes
        del self.buf[:]
        def do_changes(_=[1]):
            i = _[0] = _[0] + 1
            m.url = "file:/tmp/foo%s.avi" % i
            m2.url = "file:/tmp/foo%s.avi" % i
            m.set_meta(k, "creator%s" % i)
            a.end = 100 + i
            a.set_meta(k, "creator%s" % i)
            r.append(a)
            r2.append(a2)
            r.set_meta(k, "creator%s" % i)
            r2.set_meta(k, "creator%s" % i)

        do_changes()
        self.assertEqual(self.buf,
                         [(self.p1, r, "modified-items", (slice(2,2), [a,])),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("relation::pre-modified-items", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
            [(self.p1, r, "pre-modified-items",(slice(3,3), [a,])),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("relation::modified-meta", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
            [(self.p1, r, "modified-meta", (k, r.get_meta(k))),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("relation::pre-modified-meta", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
            [(self.p1, r, "pre-modified-meta", (k, r.get_meta(k))),])
        del self.buf[:]
        self.p1.disconnect(hid)

        do_changes()
        self.assertEqual(self.buf, [])

    def test_modify_list(self):
        k = DC_NS_PREFIX + "creator"
        hid = self.p1.connect("list::modified-items", self.elt_handler)
        m = self.p1.create_media("m", "file:/tmp/foo.avi")
        m2 = self.p2.create_media("m", "file:/tmp/foo.avi")
        a = self.p1.create_annotation("a", m, 10, 20, "text/plain")
        a2 = self.p2.create_annotation("a", m2, 10, 20, "text/plain")
        L = self.p1.create_list("L", items=[a, m,])
        L2 = self.p2.create_list("L", items=[m2, a2,])
        self.assertEqual(len(self.buf), 2) # initial members cause changes
        del self.buf[:]
        def do_changes(_=[1]):
            i = _[0] = _[0] + 1
            m.url = "file:/tmp/foo%s.avi" % i
            m2.url = "file:/tmp/foo%s.avi" % i
            m.set_meta(k, "creator%s" % i)
            a.end = 100 + i
            a.set_meta(k, "creator%s" % i)
            L.append(a)
            L2.append(a2)
            L.set_meta(k, "creator%s" % i)
            L2.set_meta(k, "creator%s" % i)

        do_changes()
        self.assertEqual(self.buf,
                         [(self.p1, L, "modified-items", (slice(2,2), [a,])),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("list::pre-modified-items", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
            [(self.p1, L, "pre-modified-items",(slice(3,3), [a,])),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("list::modified-meta", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
            [(self.p1, L, "modified-meta", (k, L.get_meta(k))),])
        del self.buf[:]
        self.p1.disconnect(hid)

        hid = self.p1.connect("list::pre-modified-meta", self.elt_handler)
        do_changes()
        self.assertEqual(self.buf,
            [(self.p1, L, "pre-modified-meta", (k, L.get_meta(k))),])
        del self.buf[:]
        self.p1.disconnect(hid)

        do_changes()
        self.assertEqual(self.buf, [])