Add Appveyor

Add CI via Appveyor for Windows

appveyor.yml

@@ -0,0 +1,45 @@
+environment:
+  matrix:
+    - PYTHON: "C:\\Python35"
+      PYTHON_VERSION: "3.5"
+      PYTHON_ARCH: "32"
+
+    - PYTHON: "C:\\Python35-x64"
+      PYTHON_VERSION: "3.5"
+      PYTHON_ARCH: "64"
+
+branches:
+  # whitelist
+  only:
+    - master
+
+cache:
+  - "C:\\wheels"
+
+install:
+  # Prepend newly installed Python to the PATH of this build (this cannot be
+  # done from inside the powershell script as it would require to restart
+  # the parent CMD process).
+  - "SET PATH=%PYTHON%;%PYTHON%\\Scripts;%PATH%"
+
+  # Check that we have the expected version and architecture for Python
+  - "python --version"
+  - "python -c \"import struct; print(struct.calcsize('P') * 8)\""
+
+  - "pip -q install wheel"
+  # Create c:/wheels if it does not exist.
+  - ps: If ( -not (Test-Path C:\\wheels) )  { mkdir C:\\wheels }
+  - ECHO "Cached wheels:"
+  - ps: "ls \"C:\\wheels\""
+  - "pip -q wheel --use-wheel --wheel-dir C:\\wheels --find-links C:\\wheels -r test-requirements.txt"
+  - "pip -q wheel --use-wheel --wheel-dir C:\\wheels --find-links C:\\wheels -r requirements.txt"
+  - "pip -q wheel --use-wheel --wheel-dir C:\\wheels --find-links C:\\wheels -r gui-requirements.txt"
+  - "pip -q install --find-links=C:\\wheels -r test-requirements.txt"
+  - "pip -q install --find-links=C:\\wheels -r requirements.txt"
+  - "pip -q install --find-links=C:\\wheels -r gui-requirements.txt"
+
+build: false  # Not a C# project, build stuff at the test step instead.
+
+test_script:
+  - "python setup.py install"
+  - "python -m pytest"

tests/test_scrape.py

@@ -25,7 +25,7 @@ def test_get_images(self):
         with tempfile.TemporaryDirectory() as directory:
             scrape.get_image_links = lambda x, y: [(
                   'filename.png',
-                  'https://placeholdit.imgix.net/'
+                  'http://placeholdit.imgix.net/'
                   '~text?txtsize=15&txt=image1&w=120&h=120')]
             scrape.get_images('url', directory, 1)
             self.assertEqual(os.listdir(directory), ['filename.png'])