import datetime

from django.core.exceptions import ValidationError

from django.forms import Form, SplitDateTimeField

from django.forms.widgets import SplitDateTimeWidget

from django.test import SimpleTestCase

class SplitDateTimeFieldTest(SimpleTestCase):

    def test_splitdatetimefield_1(self):

        f = SplitDateTimeField()

        self.assertIsInstance(f.widget, SplitDateTimeWidget)

        self.assertEqual(

            datetime.datetime(2006, 1, 10, 7, 30),

            f.clean([datetime.date(2006, 1, 10), datetime.time(7, 30)]),

        )

        with self.assertRaisesMessage(ValidationError, "'This field is required.'"):

            f.clean(None)

        with self.assertRaisesMessage(ValidationError, "'This field is required.'"):

            f.clean("")

        with self.assertRaisesMessage(ValidationError, "'Enter a list of values.'"):

            f.clean("hello")

        with self.assertRaisesMessage(

            ValidationError, "'Enter a valid date.', 'Enter a valid time.'"

        ):

            f.clean(["hello", "there"])

        with self.assertRaisesMessage(ValidationError, "'Enter a valid time.'"):

            f.clean(["2006-01-10", "there"])

        with self.assertRaisesMessage(ValidationError, "'Enter a valid date.'"):

            f.clean(["hello", "07:30"])

    def test_splitdatetimefield_2(self):

        f = SplitDateTimeField(required=False)

        self.assertEqual(

            datetime.datetime(2006, 1, 10, 7, 30),

            f.clean([datetime.date(2006, 1, 10), datetime.time(7, 30)]),

        )

        self.assertEqual(

            datetime.datetime(2006, 1, 10, 7, 30), f.clean(["2006-01-10", "07:30"])

        )

        self.assertIsNone(f.clean(None))

        self.assertIsNone(f.clean(""))

        self.assertIsNone(f.clean([""]))

        self.assertIsNone(f.clean(["", ""]))

        with self.assertRaisesMessage(ValidationError, "'Enter a list of values.'"):

            f.clean("hello")

        with self.assertRaisesMessage(

            ValidationError, "'Enter a valid date.', 'Enter a valid time.'"

        ):

            f.clean(["hello", "there"])

        with self.assertRaisesMessage(ValidationError, "'Enter a valid time.'"):

            f.clean(["2006-01-10", "there"])

        with self.assertRaisesMessage(ValidationError, "'Enter a valid date.'"):

            f.clean(["hello", "07:30"])

        with self.assertRaisesMessage(ValidationError, "'Enter a valid time.'"):

            f.clean(["2006-01-10", ""])

        with self.assertRaisesMessage(ValidationError, "'Enter a valid time.'"):

            f.clean(["2006-01-10"])

        with self.assertRaisesMessage(ValidationError, "'Enter a valid date.'"):

            f.clean(["", "07:30"])

    def test_splitdatetimefield_changed(self):

        f = SplitDateTimeField(input_date_formats=["%d/%m/%Y"])

        self.assertFalse(

            f.has_changed(["11/01/2012", "09:18:15"], ["11/01/2012", "09:18:15"])

        )

        self.assertTrue(

            f.has_changed(

                datetime.datetime(2008, 5, 6, 12, 40, 00), ["2008-05-06", "12:40:00"]

            )

        )

        self.assertFalse(

            f.has_changed(

                datetime.datetime(2008, 5, 6, 12, 40, 00), ["06/05/2008", "12:40"]

            )

        )

        self.assertTrue(

            f.has_changed(

                datetime.datetime(2008, 5, 6, 12, 40, 00), ["06/05/2008", "12:41"]

            )

        )

    def test_form_as_table(self):

        class TestForm(Form):

            datetime = SplitDateTimeField()

        f = TestForm()

        self.assertHTMLEqual(

            f.as_table(),

            "<tr><th><label>Datetime:</label></th><td>"

            '<input type="text" name="datetime_0" required id="id_datetime_0">'

            '<input type="text" name="datetime_1" required id="id_datetime_1">'

            "</td></tr>",

        )