pages.models.vk_ls_product_search.DoesNotExist: vk_ls_product_search matching query does not exist.

Hi all,

I have written test case for ProductDetails_ls for views

views.py

  ```  

class onClickSearch():

    def ProductDetails_ls(request, id):
        # product_ls = vk_ls_product_search.objects.get(id=id)
        product_ls = get_object_or_404(vk_ls_product_search, id=id)
        email = request.session.get('email')
        return render(request, "productdetails_ls.html", {

'product_ls': product_ls,'msg_count': msg_count_cl(email),
                                                          'time': settings.SESSION_IDLE_TIMEOUT,
                                                          'name': first_last_initial(email),
                                                          'fullname': fullname(email),
                                                          })

```

urls.py

```

 path('ProductDetails_ls/<int:id>', views.onClickSearch.ProductDetails_ls, name='ProductDetails_ls'),

```

test_views.py

```

@pytest.mark.django_db
class TestViews:

    def test_product_detail_ls_authenticated(self):
        mixer.blend('pages.vk_ls_product_search')
        path = reverse('ProductDetails_ls', kwargs={'id': 19})
        request = RequestFactory().get(path)
        request.user = mixer.blend(vk_customer)

        response = onClickSearch.ProductDetails_ls(request, id=19)
        print(response)
        assert response.status_code == 200

```

Here, I am getting this error please anyone can help me out to solve this error,

```

============================================================================= FAILURES =============================================================================
__________________________________________________________ TestViews.test_product_detail_ls_authenticated __________________________________________________________

klass = <class 'pages.models.vk_ls_product_search'>, args = (), kwargs = {'id': 19}, queryset = <QuerySet [<vk_ls_product_search: HmuKHxkrbmhWDylFcBOd>]>

    def get_object_or_404(klass, *args, **kwargs):
        """
        Use get() to return an object, or raise a Http404 exception if the object
        does not exist.

        klass may be a Model, Manager, or QuerySet object. All other passed
        arguments and keyword arguments are used in the get() query.

        Like with QuerySet.get(), MultipleObjectsReturned is raised if more than
        one object is found.
        """
        queryset = _get_queryset(klass)
        if not hasattr(queryset, 'get'):
            klass__name = klass.__name__ if isinstance(klass, type) else klass.__class__.__name__
            raise ValueError(
                "First argument to get_object_or_404() must be a Model, Manager, "
                "or QuerySet, not '%s'." % klass__name
            )
        try:
>           return queryset.get(*args, **kwargs)

c:\users\user\appdata\local\programs\python\python38\lib\site-packages\django\shortcuts.py:76:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = <QuerySet [<vk_ls_product_search: HmuKHxkrbmhWDylFcBOd>]>, args = (), kwargs = {'id': 19}, clone = <QuerySet []>, limit = 21, num = 0

    def get(self, *args, **kwargs):
        """
        Perform the query and return a single object matching the given
        keyword arguments.
        """
        clone = self._chain() if self.query.combinator else self.filter(*args, **kwargs)
        if self.query.can_filter() and not self.query.distinct_fields:
            clone = clone.order_by()
        limit = None
        if not clone.query.select_for_update or connections[clone.db].features.supports_select_for_update_with_limit:
            limit = MAX_GET_RESULTS
            clone.query.set_limits(high=limit)
        num = len(clone)
        if num == 1:
            return clone._result_cache[0]
        if not num:
>           raise self.model.DoesNotExist(
                "%s matching query does not exist." %
                self.model._meta.object_name
            )
E           pages.models.vk_ls_product_search.DoesNotExist: vk_ls_product_search matching query does not exist.

c:\users\user\appdata\local\programs\python\python38\lib\site-packages\django\db\models\query.py:415: DoesNotExist

During handling of the above exception, another exception occurred:

self = <test_views.TestViews object at 0x0000002030703EE0>

    def test_product_detail_ls_authenticated(self):
        mixer.blend('pages.vk_ls_product_search')
        path = reverse('ProductDetails_ls', kwargs={'id': 19})
        request = RequestFactory().get(path)
        request.user = mixer.blend(vk_customer)

>       response = onClickSearch.ProductDetails_ls(request, id=19)

pages\tests\test_views.py:32:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
pages\views.py:2795: in ProductDetails_ls
    product_ls = get_object_or_404(vk_ls_product_search, id=id)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

klass = <class 'pages.models.vk_ls_product_search'>, args = (), kwargs = {'id': 19}, queryset = <QuerySet [<vk_ls_product_search: HmuKHxkrbmhWDylFcBOd>]>

    def get_object_or_404(klass, *args, **kwargs):
        """
        Use get() to return an object, or raise a Http404 exception if the object
        does not exist.

        klass may be a Model, Manager, or QuerySet object. All other passed
        arguments and keyword arguments are used in the get() query.

        Like with QuerySet.get(), MultipleObjectsReturned is raised if more than
        one object is found.
        """
        queryset = _get_queryset(klass)
        if not hasattr(queryset, 'get'):
            klass__name = klass.__name__ if isinstance(klass, type) else klass.__class__.__name__
            raise ValueError(
                "First argument to get_object_or_404() must be a Model, Manager, "
                "or QuerySet, not '%s'." % klass__name
            )
        try:
            return queryset.get(*args, **kwargs)
        except queryset.model.DoesNotExist:
>           raise Http404('No %s matches the given query.' % queryset.model._meta.object_name)
E           django.http.response.Http404: No vk_ls_product_search matches the given query.

c:\users\user\appdata\local\programs\python\python38\lib\site-packages\django\shortcuts.py:78: Http404

```

But I have that model in my models.py 

models.py

```

class vk_ls_product_search(models.Model):
    # linkid = models.IntegerField(null="true")
    merchantname = models.CharField(max_length=255, null="false")
    product_name = models.CharField(max_length=255)
    sku = models.CharField(max_length=300, null="false")
    img_url = models.TextField(max_length=255, null="false")
    description_short = models.TextField(max_length=255, null=True)
    description_long = models.TextField(max_length=255, null=True)
    price = models.DecimalField(max_digits=10, decimal_places=2, null="false", default=0)
    sale_price = models.DecimalField(max_digits=10, decimal_places=2, null="false", default=0)
    category_primary = models.CharField(max_length=255, null="false")
    category_secondary = models.CharField(max_length=255, null="false")
    createdon = models.DateTimeField(editable=False, null=True)
    link_url = models.TextField(max_length=500, null=True)
    upc_code = models.BigIntegerField(null=True)
    rebate = models.BigIntegerField(null="false", default=0)
    type_of_product = models.CharField(max_length=50, null=True, default="lsps")
    webservice_id = models.IntegerField(null=True)

    """ Here, it saves time as your timezone  """

    def save(self, *args, **kwargs):
        """ On save, update timestamps """
        if not self.pk:
            self.createdon = timezone.now()
        return super(vk_ls_product_search, self).save(*args, **kwargs)

    def __str__(self):
        return self.product_name

    class Meta:
        verbose_name_plural = 'vk_ls_product_search'

```

Please, Help me out to solve this error.

Thank you

~Salima

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