add Mockup utils to create dummy PIL/django-filer images with Text

.gitignore

@@ -66,3 +66,6 @@ target/
 # PyDev
 .project
 .pydevproject
+
+# django-filer (created by unittest run)
+filer_public/

README.creole

@@ -76,8 +76,20 @@ More info, read DocString in [[https://github.com/jedie/django-tools/blob/master
 * [[https://github.com/jedie/django-tools/blob/master/django_tools/fields/static_path.py|static path field]]
 * [[https://github.com/jedie/django-tools/blob/master/django_tools/fields/url.py|url field]] A flexible version of the original django form URLField
 
+
 == unittests helpers
 
+=== Mockup utils
+
+Create dummy PIL/django-filer images with Text, see:
+
+* [[https://github.com/jedie/django-tools/blob/master/django_tools/unittest_utils/mockup.py|/django_tools/unittest_utils/mockup.py]]
+
+usage/tests:
+
+* [[https://github.com/jedie/django-tools/blob/master/tests/test_mockup.py|/tests/test_mockup.py]]
+
+
 === BaseUnittestCase
 
 **django_tools.unittest_utils.unittest_base.BaseUnittestCase** contains some low-level assert methods:
@@ -306,6 +318,8 @@ to:
 
 == history
 
+* **dev**
+** add Mockup utils to create dummy PIL/django-filer images with Text (see above)
 * v0.30.4 - 27.10.2016 - [[https://github.com/jedie/django-tools/compare/v0.30.2...v0.30.4|compare v0.30.2...v0.30.4]]
 ** add DjangoCommandMixin
 * v0.30.2 - 05.10.2016 - [[https://github.com/jedie/django-tools/compare/v0.30.1...v0.30.2|compare v0.30.1...v0.30.2]]

django_tools/unittest_utils/mockup.py

@@ -0,0 +1,79 @@
+# coding: utf-8
+
+"""
+    Mockups
+    ~~~~~~~
+"""
+
+from __future__ import unicode_literals, print_function
+
+import tempfile
+
+from PIL import Image, ImageDraw
+
+from django.contrib.auth import get_user_model
+from django.core.management.base import BaseCommand, CommandError
+from django.core.files import File as DjangoFile
+
+from filer.models import Image as FilerImage
+
+
+DUMMY_TEXT = """Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula
+eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient
+montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque
+eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo,
+fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut,
+imperdiet a, venenatis vitae, justo. Nullam dictum felis eu pede mollis pretium.
+
+Integer tincidunt. Cras dapibus. Vivamus elementum semper nisi. Aenean vulputate
+eleifend tellus. Aenean leo ligula, porttitor eu, consequat vitae, eleifend ac,
+enim. Aliquam lorem ante, dapibus in, viverra quis, feugiat a, tellus. Phasellus
+viverra nulla ut metus varius laoreet. Quisque rutrum. Aenean imperdiet. Etiam
+ultricies nisi vel augue. Curabitur ullamcorper ultricies nisi. Nam eget dui.
+
+Etiam rhoncus. Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper
+libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel,
+luctus pulvinar, hendrerit id, lorem. Maecenas nec odio et ante tincidunt
+tempus. Donec vitae sapien ut libero venenatis faucibus. Nullam quis ante. Etiam
+sit amet orci eget eros faucibus tincidunt. Duis leo. Sed fringilla mauris sit
+amet nibh. Donec sodales sagittis magna. Sed consequat, leo eget bibendum
+sodales, augue velit cursus nunc"""
+
+
+def create_pil_image(width, height):
+    img = Image.new('RGB', (width, height), 'black') # create a new black image
+    pixels = img.load() # create the pixel map
+
+    # Fill image
+    for i in range(img.size[0]):
+        for j in range(img.size[1]):
+            pixels[i,j] = (i, j, 1)
+
+    return img
+
+
+def create_info_image(width, height, text, fill='#ffffff', align='center'):
+    im = create_pil_image(width, height)
+    draw = ImageDraw.Draw(im)
+    draw.multiline_text((10, 10), text, fill=fill, align=align)
+    return im
+
+
+def create_filer_image(pil_image, user):
+    file_obj = DjangoFile(pil_image, name=pil_image.name)
+    image = FilerImage.objects.create(
+        owner=user,
+        original_filename=pil_image.name,
+        file=file_obj,
+        folder=None
+    )
+    return image
+
+
+def create_temp_filer_info_image(width, height, text, user):
+    f = tempfile.NamedTemporaryFile(prefix='dummy_', suffix='.png')
+    im = create_info_image(width, height, text)
+    im.save(f, format='png')
+    filer_image = create_filer_image(f, user)
+    return filer_image
+

django_tools_test_project/test_settings.py

@@ -42,6 +42,8 @@
     'django.contrib.sites',
     'django.contrib.admin',
 
+    'easy_thumbnails', 'filer', # for django_tools.unittest_utils.mockup
+
     'django_tools',
     'django_tools.local_sync_cache',
     'django_tools.dynamic_site',
@@ -92,4 +94,4 @@
             'level': 'DEBUG',
         },
     },
-}
+}

requirements-test.txt

@@ -2,4 +2,6 @@ tox
 coverage
 coveralls
 python-creole
-docutils
+docutils
+Pillow
+cmsplugin-filer

tests/test_mockup.py

@@ -0,0 +1,43 @@
+# coding: utf-8
+
+"""
+    test Mockups
+    ~~~~~~~~~~~~
+"""
+
+from __future__ import unicode_literals, print_function
+
+from django_tools.unittest_utils.mockup import create_temp_filer_info_image, \
+    create_pil_image, create_info_image
+from django_tools.unittest_utils.unittest_base import BaseTestCase
+
+
+class TestMockup(BaseTestCase):
+    def test_create_pil_image(self):
+        pil_image = create_pil_image(width=300, height=150)
+
+        self.assertEqual(pil_image.width, 300)
+        self.assertEqual(pil_image.height, 150)
+
+        self.assertEqual(pil_image.verify(), None)
+
+    def test_create_info_image(self):
+        pil_image = create_info_image(width=400, height=200, text="foo", fill='#ffffff', align='center')
+
+        self.assertEqual(pil_image.width, 400)
+        self.assertEqual(pil_image.height, 200)
+
+        self.assertEqual(pil_image.verify(), None)
+
+    def test_create_temp_filer_info_image(self):
+        self.create_testusers(verbosity=1)
+
+        user = self.login(usertype="normal")
+
+        filer_info_image = create_temp_filer_info_image(width=500, height=300, text="A test image", user=user)
+        self.assertEqual(filer_info_image.width, 500)
+        self.assertEqual(filer_info_image.height, 300)
+
+        self.assertEqual(filer_info_image.size, 1791)
+        self.assertIn("django-tools/filer_public/", filer_info_image.path)
+        self.assertIn(".png", filer_info_image.path)