Windows integration tests fail running through VS

[jrsurge]

On Windows, two integration tests fail in VS (building with VS triggers the testing):

• test_images

15>------ Build started: Project: test_images, Configuration: Release x64 ------
15>configuring sclang to include Scintillator classes.
15>Traceback (most recent call last):
15>  File "C:/Users/jrsurge/Documents/Programming/Scintillator/tools/run-sclang.py", line 47, in <module>
15>    main(sys.argv[1:])
15>  File "C:/Users/jrsurge/Documents/Programming/Scintillator/tools/run-sclang.py", line 12, in main
15>    assert os.path.exists(sclang_path)
15>AssertionError
15>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targets(230,5): error MSB6006: "cmd.exe" exited with code 1.
15>Done building project "test_images.vcxproj" -- FAILED.

• compare_images

16>------ Build started: Project: compare_images, Configuration: Release x64 ------
16>Traceback (most recent call last):
16>  File "../tools/compare-test-images.py", line 8, in <module>
16>    import yaml
16>ImportError: No module named 'yaml'
16>C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Microsoft\VC\v160\Microsoft.CppCommon.targets(230,5): error MSB6006: "cmd.exe" exited with code 1.
16>Done building project "compare_images.vcxproj" -- FAILED.

---

test_images is being passed the wrong options?
compare_images is failing because of the Python install missing the yaml package.

Steps

• Investigate options passing
• Update Python install
  • Success
    • Require min version of Python on Windows
  • Failure
    • Install yaml package
      • Success
        • Require YAML package on Windows
      • Failure
        • Investigate

[lnihlen]

Working on this right now. You will also need to install ImageMagick to do the image comparison. It needs the command line tool "compare.exe" which it uses for pixel comparison with reference images, and for generating the diff images that appear in the html report.

[lnihlen]

(p.s. I would love to ultimately use Scintillator itself for image comparison)

[lnihlen]

Oh, this is specific to Visual Studio. Yeah this stuff wasn't working on the command line, either. So my PR, while relevant, will not fix this issue. Sorry for the spam!

[lnihlen]

Also, you will need to have run cmake with -DSCIN_SCLANG=<path to sclang.exe>

[jrsurge]

not sure these are specific to VS, just mentioned for completeness really.

The first issue will probably be resolved by that cmake flag, but I'll look at the python module thing

[lnihlen]

for travis pyyaml install was:

git clone https://github.com/yaml/pyyaml/
cd pyyaml
python setup.py install

[lnihlen]

I'm working on adding windows support to tools/fetch_sclang.py which will fetch a limited (no IDE) supercollider build upload to s3 from the ScintillatorSynth/sclang-ext project.