Rewrote form widget tests as proper unittests.

This is preparation for landing the template-based widget rendering
patch and goes a long way to making these tests more useful for future
development. The old doctest heritage is strong here.

1 files changed, 111 insertions, 0 deletions

diff --git a/tests/forms_tests/field_tests/test_datefield.py b/tests/forms_tests/field_tests/test_datefield.py
new file mode 100644
index 0000000000..6b66cb2d52
--- /dev/null
+++ b/tests/forms_tests/field_tests/test_datefield.py
@@ -0,0 +1,111 @@
+from datetime import date
+
+from django.forms import DateField, Form, HiddenInput, SelectDateWidget
+from django.test import SimpleTestCase, override_settings
+from django.utils import translation
+
+
+class GetDate(Form):
+    mydate = DateField(widget=SelectDateWidget)
+
+
+class DateFieldTest(SimpleTestCase):
+
+    def test_form_field(self):
+        a = GetDate({'mydate_month': '4', 'mydate_day': '1', 'mydate_year': '2008'})
+        self.assertTrue(a.is_valid())
+        self.assertEqual(a.cleaned_data['mydate'], date(2008, 4, 1))
+
+        # As with any widget that implements get_value_from_datadict(), we must
+        # accept the input from the "as_hidden" rendering as well.
+        self.assertHTMLEqual(
+            a['mydate'].as_hidden(),
+            '<input type="hidden" name="mydate" value="2008-4-1" id="id_mydate" />',
+        )
+
+        b = GetDate({'mydate': '2008-4-1'})
+        self.assertTrue(b.is_valid())
+        self.assertEqual(b.cleaned_data['mydate'], date(2008, 4, 1))
+
+        # Invalid dates shouldn't be allowed
+        c = GetDate({'mydate_month': '2', 'mydate_day': '31', 'mydate_year': '2010'})
+        self.assertFalse(c.is_valid())
+        self.assertEqual(c.errors, {'mydate': ['Enter a valid date.']})
+
+        # label tag is correctly associated with month dropdown
+        d = GetDate({'mydate_month': '1', 'mydate_day': '1', 'mydate_year': '2010'})
+        self.assertIn('<label for="id_mydate_month">', d.as_p())
+
+    @override_settings(USE_L10N=True)
+    @translation.override('nl')
+    def test_l10n_date_changed(self):
+        """
+        Ensure that DateField.has_changed() with SelectDateWidget works
+        correctly with a localized date format (#17165).
+        """
+        # With Field.show_hidden_initial=False
+        b = GetDate({
+            'mydate_year': '2008',
+            'mydate_month': '4',
+            'mydate_day': '1',
+        }, initial={'mydate': date(2008, 4, 1)})
+        self.assertFalse(b.has_changed())
+
+        b = GetDate({
+            'mydate_year': '2008',
+            'mydate_month': '4',
+            'mydate_day': '2',
+        }, initial={'mydate': date(2008, 4, 1)})
+        self.assertTrue(b.has_changed())
+
+        # With Field.show_hidden_initial=True
+        class GetDateShowHiddenInitial(Form):
+            mydate = DateField(widget=SelectDateWidget, show_hidden_initial=True)
+
+        b = GetDateShowHiddenInitial({
+            'mydate_year': '2008',
+            'mydate_month': '4',
+            'mydate_day': '1',
+            'initial-mydate': HiddenInput()._format_value(date(2008, 4, 1)),
+        }, initial={'mydate': date(2008, 4, 1)})
+        self.assertFalse(b.has_changed())
+
+        b = GetDateShowHiddenInitial({
+            'mydate_year': '2008',
+            'mydate_month': '4',
+            'mydate_day': '22',
+            'initial-mydate': HiddenInput()._format_value(date(2008, 4, 1)),
+        }, initial={'mydate': date(2008, 4, 1)})
+        self.assertTrue(b.has_changed())
+
+        b = GetDateShowHiddenInitial({
+            'mydate_year': '2008',
+            'mydate_month': '4',
+            'mydate_day': '22',
+            'initial-mydate': HiddenInput()._format_value(date(2008, 4, 1)),
+        }, initial={'mydate': date(2008, 4, 22)})
+        self.assertTrue(b.has_changed())
+
+        b = GetDateShowHiddenInitial({
+            'mydate_year': '2008',
+            'mydate_month': '4',
+            'mydate_day': '22',
+            'initial-mydate': HiddenInput()._format_value(date(2008, 4, 22)),
+        }, initial={'mydate': date(2008, 4, 1)})
+        self.assertFalse(b.has_changed())
+
+    @override_settings(USE_L10N=True)
+    @translation.override('nl')
+    def test_l10n_invalid_date_in(self):
+        # Invalid dates shouldn't be allowed
+        a = GetDate({'mydate_month': '2', 'mydate_day': '31', 'mydate_year': '2010'})
+        self.assertFalse(a.is_valid())
+        # 'Geef een geldige datum op.' = 'Enter a valid date.'
+        self.assertEqual(a.errors, {'mydate': ['Geef een geldige datum op.']})
+
+    @override_settings(USE_L10N=True)
+    @translation.override('nl')
+    def test_form_label_association(self):
+        # label tag is correctly associated with first rendered dropdown
+        a = GetDate({'mydate_month': '1', 'mydate_day': '1', 'mydate_year': '2010'})
+        self.assertIn('<label for="id_mydate_day">', a.as_p())