mirror of https://github.com/django/django.git
65 lines
2.4 KiB
Python
65 lines
2.4 KiB
Python
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# encoding: utf8
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import datetime
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from django.test import TransactionTestCase
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from django.db.migrations.writer import MigrationWriter
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from django.db import migrations
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class WriterTests(TransactionTestCase):
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"""
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Tests the migration writer (makes migration files from Migration instances)
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"""
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def safe_exec(self, value, string):
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l = {}
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try:
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exec(string, {}, l)
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except:
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self.fail("Could not serialize %r: failed to exec %r" % (value, string.strip()))
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return l
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def assertSerializedEqual(self, value):
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string, imports = MigrationWriter.serialize(value)
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new_value = self.safe_exec(value, "%s\ntest_value_result = %s" % ("\n".join(imports), string))['test_value_result']
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self.assertEqual(new_value, value)
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def assertSerializedIs(self, value):
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string, imports = MigrationWriter.serialize(value)
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new_value = self.safe_exec(value, "%s\ntest_value_result = %s" % ("\n".join(imports), string))['test_value_result']
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self.assertIs(new_value, value)
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def test_serialize(self):
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"""
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Tests various different forms of the serializer.
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This does not care about formatting, just that the parsed result is
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correct, so we always exec() the result and check that.
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"""
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# Basic values
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self.assertSerializedEqual(1)
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self.assertSerializedEqual(None)
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self.assertSerializedEqual("foobar")
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self.assertSerializedEqual(u"föobár")
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self.assertSerializedEqual({1: 2})
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self.assertSerializedEqual(["a", 2, True, None])
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self.assertSerializedEqual(set([2, 3, "eighty"]))
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self.assertSerializedEqual({"lalalala": ["yeah", "no", "maybe"]})
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# Datetime stuff
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self.assertSerializedEqual(datetime.datetime.utcnow())
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self.assertSerializedEqual(datetime.datetime.utcnow)
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self.assertSerializedEqual(datetime.date.today())
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self.assertSerializedEqual(datetime.date.today)
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def test_simple_migration(self):
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"""
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Tests serializing a simple migration.
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"""
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migration = type("Migration", (migrations.Migration,), {
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"operations": [
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migrations.DeleteModel("MyModel"),
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],
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"dependencies": [("testapp", "some_other_one")],
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})
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writer = MigrationWriter(migration)
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output = writer.as_string()
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print output
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