django/tests/test_client/views.py

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import json
from urllib.parse import urlencode
from xml.dom.minidom import parseString
from django.contrib.auth.decorators import login_required, permission_required
from django.core import mail
from django.core.exceptions import ValidationError
from django.forms import fields
from django.forms.forms import Form
from django.http import (
HttpResponse,
HttpResponseBadRequest,
HttpResponseNotAllowed,
HttpResponseNotFound,
HttpResponseRedirect,
)
from django.shortcuts import render
from django.template import Context, Template
from django.test import Client
from django.utils.decorators import method_decorator
from django.views.generic import TemplateView
def get_view(request):
"A simple view that expects a GET request, and returns a rendered template"
t = Template("This is a test. {{ var }} is the value.", name="GET Template")
c = Context({"var": request.GET.get("var", 42)})
return HttpResponse(t.render(c))
async def async_get_view(request):
return HttpResponse(b"GET content.")
def trace_view(request):
"""
A simple view that expects a TRACE request and echoes its status line.
TRACE requests should not have an entity; the view will return a 400 status
response if it is present.
"""
if request.method.upper() != "TRACE":
return HttpResponseNotAllowed("TRACE")
elif request.body:
return HttpResponseBadRequest("TRACE requests MUST NOT include an entity")
else:
protocol = request.META["SERVER_PROTOCOL"]
t = Template(
"{{ method }} {{ uri }} {{ version }}",
name="TRACE Template",
)
c = Context(
{
"method": request.method,
"uri": request.path,
"version": protocol,
}
)
return HttpResponse(t.render(c))
def put_view(request):
if request.method == "PUT":
t = Template("Data received: {{ data }} is the body.", name="PUT Template")
c = Context(
{
"Content-Length": request.META["CONTENT_LENGTH"],
"data": request.body.decode(),
}
)
else:
t = Template("Viewing GET page.", name="Empty GET Template")
c = Context()
return HttpResponse(t.render(c))
def post_view(request):
"""A view that expects a POST, and returns a different template depending
on whether any POST data is available
"""
if request.method == "POST":
if request.POST:
t = Template(
"Data received: {{ data }} is the value.", name="POST Template"
)
c = Context({"data": request.POST["value"]})
else:
t = Template("Viewing POST page.", name="Empty POST Template")
c = Context()
else:
t = Template("Viewing GET page.", name="Empty GET Template")
c = Context()
return HttpResponse(t.render(c))
def post_then_get_view(request):
"""
A view that expects a POST request, returns a redirect response
to itself providing only a ?success=true querystring,
the value of this querystring is then rendered upon GET.
"""
if request.method == "POST":
return HttpResponseRedirect("?success=true")
t = Template("The value of success is {{ value }}.", name="GET Template")
c = Context({"value": request.GET.get("success", "false")})
return HttpResponse(t.render(c))
def json_view(request):
"""
A view that expects a request with the header 'application/json' and JSON
data, which is deserialized and included in the context.
"""
if request.META.get("CONTENT_TYPE") != "application/json":
return HttpResponse()
t = Template("Viewing {} page. With data {{ data }}.".format(request.method))
data = json.loads(request.body.decode("utf-8"))
c = Context({"data": data})
return HttpResponse(t.render(c))
def view_with_header(request):
"A view that has a custom header"
response = HttpResponse()
response.headers["X-DJANGO-TEST"] = "Slartibartfast"
return response
def raw_post_view(request):
"""A view which expects raw XML to be posted and returns content extracted
from the XML"""
if request.method == "POST":
root = parseString(request.body)
first_book = root.firstChild.firstChild
title, author = [n.firstChild.nodeValue for n in first_book.childNodes]
t = Template("{{ title }} - {{ author }}", name="Book template")
c = Context({"title": title, "author": author})
else:
t = Template("GET request.", name="Book GET template")
c = Context()
return HttpResponse(t.render(c))
def redirect_view(request):
"A view that redirects all requests to the GET view"
if request.GET:
query = "?" + urlencode(request.GET, True)
else:
query = ""
return HttpResponseRedirect("/get_view/" + query)
def method_saving_307_redirect_query_string_view(request):
return HttpResponseRedirect("/post_view/?hello=world", status=307)
def method_saving_308_redirect_query_string_view(request):
return HttpResponseRedirect("/post_view/?hello=world", status=308)
def _post_view_redirect(request, status_code):
"""Redirect to /post_view/ using the status code."""
redirect_to = request.GET.get("to", "/post_view/")
return HttpResponseRedirect(redirect_to, status=status_code)
def method_saving_307_redirect_view(request):
return _post_view_redirect(request, 307)
def method_saving_308_redirect_view(request):
return _post_view_redirect(request, 308)
def view_with_secure(request):
"A view that indicates if the request was secure"
response = HttpResponse()
response.test_was_secure_request = request.is_secure()
response.test_server_port = request.META.get("SERVER_PORT", 80)
return response
def double_redirect_view(request):
"A view that redirects all requests to a redirection view"
return HttpResponseRedirect("/permanent_redirect_view/")
def bad_view(request):
"A view that returns a 404 with some error content"
return HttpResponseNotFound("Not found!. This page contains some MAGIC content")
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TestChoices = (
("a", "First Choice"),
("b", "Second Choice"),
("c", "Third Choice"),
("d", "Fourth Choice"),
("e", "Fifth Choice"),
)
class TestForm(Form):
text = fields.CharField()
email = fields.EmailField()
value = fields.IntegerField()
single = fields.ChoiceField(choices=TestChoices)
multi = fields.MultipleChoiceField(choices=TestChoices)
def clean(self):
cleaned_data = self.cleaned_data
if cleaned_data.get("text") == "Raise non-field error":
raise ValidationError("Non-field error.")
return cleaned_data
def form_view(request):
"A view that tests a simple form"
if request.method == "POST":
form = TestForm(request.POST)
if form.is_valid():
t = Template("Valid POST data.", name="Valid POST Template")
c = Context()
else:
t = Template(
"Invalid POST data. {{ form.errors }}", name="Invalid POST Template"
)
c = Context({"form": form})
else:
form = TestForm(request.GET)
t = Template("Viewing base form. {{ form }}.", name="Form GET Template")
c = Context({"form": form})
return HttpResponse(t.render(c))
def form_view_with_template(request):
"A view that tests a simple form"
if request.method == "POST":
form = TestForm(request.POST)
if form.is_valid():
message = "POST data OK"
else:
message = "POST data has errors"
else:
form = TestForm()
message = "GET form page"
return render(
request,
"form_view.html",
{
"form": form,
"message": message,
},
)
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@login_required
def login_protected_view(request):
"A simple view that is login protected."
t = Template(
"This is a login protected test. Username is {{ user.username }}.",
name="Login Template",
)
c = Context({"user": request.user})
return HttpResponse(t.render(c))
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@login_required(redirect_field_name="redirect_to")
def login_protected_view_changed_redirect(request):
"A simple view that is login protected with a custom redirect field set"
t = Template(
"This is a login protected test. Username is {{ user.username }}.",
name="Login Template",
)
c = Context({"user": request.user})
return HttpResponse(t.render(c))
def _permission_protected_view(request):
"A simple view that is permission protected."
t = Template(
"This is a permission protected test. "
"Username is {{ user.username }}. "
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"Permissions are {{ user.get_all_permissions }}.",
name="Permissions Template",
)
c = Context({"user": request.user})
return HttpResponse(t.render(c))
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permission_protected_view = permission_required("permission_not_granted")(
_permission_protected_view
)
permission_protected_view_exception = permission_required(
"permission_not_granted", raise_exception=True
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)(_permission_protected_view)
class _ViewManager:
@method_decorator(login_required)
def login_protected_view(self, request):
t = Template(
"This is a login protected test using a method. "
"Username is {{ user.username }}.",
name="Login Method Template",
)
c = Context({"user": request.user})
return HttpResponse(t.render(c))
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@method_decorator(permission_required("permission_not_granted"))
def permission_protected_view(self, request):
t = Template(
"This is a permission protected test using a method. "
"Username is {{ user.username }}. "
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"Permissions are {{ user.get_all_permissions }}.",
name="Permissions Template",
)
c = Context({"user": request.user})
return HttpResponse(t.render(c))
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_view_manager = _ViewManager()
login_protected_method_view = _view_manager.login_protected_view
permission_protected_method_view = _view_manager.permission_protected_view
def session_view(request):
"A view that modifies the session"
request.session["tobacconist"] = "hovercraft"
t = Template(
"This is a view that modifies the session.",
name="Session Modifying View Template",
)
c = Context()
return HttpResponse(t.render(c))
def broken_view(request):
"""A view which just raises an exception, simulating a broken view."""
raise KeyError("Oops! Looks like you wrote some bad code.")
def mail_sending_view(request):
mail.EmailMessage(
"Test message",
"This is a test email",
"from@example.com",
["first@example.com", "second@example.com"],
).send()
return HttpResponse("Mail sent")
def mass_mail_sending_view(request):
m1 = mail.EmailMessage(
"First Test message",
"This is the first test email",
"from@example.com",
["first@example.com", "second@example.com"],
)
m2 = mail.EmailMessage(
"Second Test message",
"This is the second test email",
"from@example.com",
["second@example.com", "third@example.com"],
)
c = mail.get_connection()
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c.send_messages([m1, m2])
return HttpResponse("Mail sent")
def nesting_exception_view(request):
"""
A view that uses a nested client to call another view and then raises an
exception.
"""
client = Client()
client.get("/get_view/")
raise Exception("exception message")
def django_project_redirect(request):
return HttpResponseRedirect("https://www.djangoproject.com/")
def no_trailing_slash_external_redirect(request):
"""
RFC 2616 3.2.2: A bare domain without any abs_path element should be
treated as having the trailing `/`.
Use https://testserver, rather than an external domain, in order to allow
use of follow=True, triggering Client._handle_redirects().
"""
return HttpResponseRedirect("https://testserver")
def index_view(request):
"""Target for no_trailing_slash_external_redirect with follow=True."""
return HttpResponse("Hello world")
def upload_view(request):
"""Prints keys of request.FILES to the response."""
return HttpResponse(", ".join(request.FILES))
class TwoArgException(Exception):
def __init__(self, one, two):
pass
def two_arg_exception(request):
raise TwoArgException("one", "two")
class CBView(TemplateView):
template_name = "base.html"