from django.template import TemplateSyntaxError
from django.test import SimpleTestCase

from ..utils import setup


class FirstOfTagTests(SimpleTestCase):

    @setup({'firstof01': '{% firstof a b c %}'})
    def test_firstof01(self):
        output = self.engine.render_to_string('firstof01', {'a': 0, 'c': 0, 'b': 0})
        self.assertEqual(output, '')

    @setup({'firstof02': '{% firstof a b c %}'})
    def test_firstof02(self):
        output = self.engine.render_to_string('firstof02', {'a': 1, 'c': 0, 'b': 0})
        self.assertEqual(output, '1')

    @setup({'firstof03': '{% firstof a b c %}'})
    def test_firstof03(self):
        output = self.engine.render_to_string('firstof03', {'a': 0, 'c': 0, 'b': 2})
        self.assertEqual(output, '2')

    @setup({'firstof04': '{% firstof a b c %}'})
    def test_firstof04(self):
        output = self.engine.render_to_string('firstof04', {'a': 0, 'c': 3, 'b': 0})
        self.assertEqual(output, '3')

    @setup({'firstof05': '{% firstof a b c %}'})
    def test_firstof05(self):
        output = self.engine.render_to_string('firstof05', {'a': 1, 'c': 3, 'b': 2})
        self.assertEqual(output, '1')

    @setup({'firstof06': '{% firstof a b c %}'})
    def test_firstof06(self):
        output = self.engine.render_to_string('firstof06', {'c': 3, 'b': 0})
        self.assertEqual(output, '3')

    @setup({'firstof07': '{% firstof a b "c" %}'})
    def test_firstof07(self):
        output = self.engine.render_to_string('firstof07', {'a': 0})
        self.assertEqual(output, 'c')

    @setup({'firstof08': '{% firstof a b "c and d" %}'})
    def test_firstof08(self):
        output = self.engine.render_to_string('firstof08', {'a': 0, 'b': 0})
        self.assertEqual(output, 'c and d')

    @setup({'firstof09': '{% firstof %}'})
    def test_firstof09(self):
        with self.assertRaises(TemplateSyntaxError):
            self.engine.get_template('firstof09')

    @setup({'firstof10': '{% firstof a %}'})
    def test_firstof10(self):
        output = self.engine.render_to_string('firstof10', {'a': '<'})
        self.assertEqual(output, '&lt;')

    @setup({'firstof11': '{% firstof a b %}'})
    def test_firstof11(self):
        output = self.engine.render_to_string('firstof11', {'a': '<', 'b': '>'})
        self.assertEqual(output, '&lt;')

    @setup({'firstof12': '{% firstof a b %}'})
    def test_firstof12(self):
        output = self.engine.render_to_string('firstof12', {'a': '', 'b': '>'})
        self.assertEqual(output, '&gt;')

    @setup({'firstof13': '{% autoescape off %}{% firstof a %}{% endautoescape %}'})
    def test_firstof13(self):
        output = self.engine.render_to_string('firstof13', {'a': '<'})
        self.assertEqual(output, '<')

    @setup({'firstof14': '{% firstof a|safe b %}'})
    def test_firstof14(self):
        output = self.engine.render_to_string('firstof14', {'a': '<'})
        self.assertEqual(output, '<')

    @setup({'firstof15': '{% firstof a b c as myvar %}'})
    def test_firstof15(self):
        ctx = {'a': 0, 'b': 2, 'c': 3}
        output = self.engine.render_to_string('firstof15', ctx)
        self.assertEqual(ctx['myvar'], '2')
        self.assertEqual(output, '')

    @setup({'firstof16': '{% firstof a b c as myvar %}'})
    def test_all_false_arguments_asvar(self):
        ctx = {'a': 0, 'b': 0, 'c': 0}
        output = self.engine.render_to_string('firstof16', ctx)
        self.assertEqual(ctx['myvar'], '')
        self.assertEqual(output, '')
