fix some testing issues

Author: djeebus

.appveyor.yml

@@ -22,8 +22,8 @@ install:
   - set PATH=C:\Python%PYTHON_MAJOR%%PYTHON_MINOR%;%PATH%
   - set PATH=C:\Python%PYTHON_MAJOR%%PYTHON_MINOR%\Scripts;%PATH%
   # Install system dependencies
-  - curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python
-  - set PATH=%USERPROFILE%\.poetry\bin;%PATH%
+  - curl -sSL https://install.python-poetry.org | python -
+  - set PATH=C:\Users\appveyor\AppData\Roaming\Python\Scripts;%PATH%
   - make doctor
   # Install project dependencies
   - make install

.travis.yml

@@ -15,8 +15,7 @@ env:
     - RANDOM_SEED=0
 
 before_install:
-  - curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | python
-  - source $HOME/.poetry/env
+  - curl -sSL https://install.python-poetry.org | python3 -
   - make doctor
 
 install:

gitman/tests/test_models_source.py

@@ -23,7 +23,7 @@ def test_init_defaults(self):
         assert "HEAD" == source.rev
 
     def test_init_invalid_rev_default_gets_corrected(self):
-        source = Source(type="git", repo="http://example.com/foo/bar.git", rev=None)
+        source = Source(type="git", repo="http://example.com/foo/bar.git", rev="")
 
         assert "HEAD" == source.rev