1 files changed, 114 insertions, 0 deletions
diff --git a/tests/scanner/test_comparator.py b/tests/scanner/test_comparator.py
new file mode 100755
index 00000000..b6b2649e
--- /dev/null
+++ b/tests/scanner/test_comparator.py
@@ -0,0 +1,114 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+# TODO: copyright
+
+import unittest
+import tempfile
+import os
+import sys
+import __builtin__
+
+
+os.environ['GI_SCANNER_DISABLE_CACHE'] = '1'
+path = os.getenv('UNINSTALLED_INTROSPECTION_SRCDIR', None)
+assert path is not None
+sys.path.insert(0, path)
+
+# Not correct, but enough to get the tests going uninstalled
+__builtin__.__dict__['DATADIR'] = path
+
+from giscanner.girparser import GIRParser
+from giscanner.gircomparator import GIRComparator
+from giscanner.message import MessageLogger, WARNING, ERROR, FATAL
+
+
+class TestComparatorErrors(unittest.TestCase):
+    def _create_temp_gir_file(self, xml):
+        tmp_fd, tmp_name = tempfile.mkstemp(suffix='.gir', text=True)
+        file = os.fdopen(tmp_fd, 'wt')
+        file.write(xml)
+        file.close()
+
+        return tmp_name
+
+    def _test_comparator(self, old_xml, new_xml, wrap=True):
+        # Wrap the files in a repository and namespace for convenience.
+        if wrap:
+            old_xml = self._wrap_gir(old_xml)
+            new_xml = self._wrap_gir(new_xml)
+
+        old_tmpfile = self._create_temp_gir_file(old_xml)
+        new_tmpfile = self._create_temp_gir_file(new_xml)
+
+        old_parser = GIRParser()
+        new_parser = GIRParser()
+
+        old_parser.parse(old_tmpfile)
+        new_parser.parse(new_tmpfile)
+
+        old_namespace = old_parser.get_namespace()
+        new_namespace = new_parser.get_namespace()
+
+        os.unlink(new_tmpfile)
+        os.unlink(old_tmpfile)
+
+        self.assertNotEqual(old_namespace, None)
+        self.assertNotEqual(new_namespace, None)
+
+        return GIRComparator(old_namespace, new_namespace)
+
+    def _wrap_gir(self, xml):
+        return ('<?xml version="1.0"?>'
+                '<repository version="1.2" '
+                        'xmlns="http://www.gtk.org/introspection/core/1.0" '
+                        'xmlns:c="http://www.gtk.org/introspection/c/1.0">'
+                    '<include name="GObject" version="2.0"/>'
+                    '<include name="Gio" version="2.0"/>'
+                    '<namespace name="N" '
+                               'version="1.0" '
+                               'shared-library="libtest-1.0.so.0" '
+                               'c:identifier-prefixes="Test" '
+                               'c:symbol-prefixes="test">'
+                        '%s'
+                    '</namespace>'
+                '</repository>') % xml
+
+    def assertSuccess(self, old_xml, new_xml, wrap=True):
+        comparator = self._test_comparator(old_xml, new_xml, wrap)
+        self.assertEqual(comparator.compare(), 0)
+
+    def assertErrors(self, old_xml, new_xml, errors, wrap=True):
+        comparator = self._test_comparator(old_xml, new_xml, wrap)
+        self.assertNotEqual(comparator.compare(), 0)
+
+        output = comparator.get_output()
+        self.assertEqual(output, errors)
+
+    def assertInfos(self, old_xml, new_xml, infos, wrap=True):
+        comparator = self._test_comparator(old_xml, new_xml, wrap)
+        self.assertEqual(comparator.compare(), 0)
+
+        output = comparator.get_output()
+        self.assertEqual(output, infos)
+
+    def test_alias_type_changed(self):
+        self.assertErrors(
+            '<alias name="A"><type name="GObject.Object"/></alias>',
+            '<alias name="A"><type name="Gio.InputStream"/></alias>',
+            [
+                (GIRComparator.OUTPUT_FORWARDS_INCOMPATIBLE,
+                 'Alias ‘N.A’ has changed type from ‘GObject.Object’ to its '
+                 'subtype ‘Gio.InputStream’.'),
+            ])
+        self.assertErrors(
+            '<alias name="A"><type name="Gio.InputStream"/></alias>',
+            '<alias name="A"><type name="GObject.Object"/></alias>',
+            [
+                (GIRComparator.OUTPUT_BACKWARDS_INCOMPATIBLE,
+                 'Alias ‘N.A’ has changed type from ‘Gio.InputStream’ to '
+                 '‘GObject.Object’.'),
+            ])
+
+
+if __name__ == '__main__':
+    unittest.main()