add Appveyor configuration

Author: masci

Diff for: Taskfile.yml

@@ -26,7 +26,7 @@ tasks:
     desc: Run integration tests only
     cmds:
       - go test -run Integration {{ default "-v" .GOFLAGS }} -coverprofile=coverage_integ.txt {{ default .DEFAULT_TARGETS .TARGETS }} {{.TEST_LDFLAGS}}
-      - pytest test/
+      - pytest test
 
   test-legacy:
     desc: Run tests for the `legacy` package

Diff for: appveyor.yml

@@ -0,0 +1,38 @@
+build: off
+deploy: off
+
+clone_folder: C:\arduino-cli
+shallow_clone: true
+
+skip_tags: true
+skip_branch_with_pr: true
+
+environment:
+  GOPATH: c:\gopath
+  PROTOC_PATH: c:\protoc
+  # add protoc, gopath and override default Python 2.7
+  PATH: $(PROTOC_PATH)\bin;$(GOPATH)\bin;C:\Python37;C:\Python37\Scripts;$(PATH)
+
+stack: go 1.12
+
+install:
+  # install the task executor
+  - curl -o task.zip -LO https://github.com/go-task/task/releases/download/v2.6.0/task_windows_amd64.zip
+  - 7z e task.zip -o%GOPATH%\bin
+  # golang dependencies needed at test time
+  - go get github.com/golangci/govet
+  - go get golang.org/x/lint/golint
+  # Python dependencies needed at test time
+  - python -V
+  - pip install -r test\requirements.txt
+  # protobuf tooling needed at test time
+  - go get github.com/golang/protobuf/protoc-gen-go
+  - curl -o protoc.zip -LO https://github.com/protocolbuffers/protobuf/releases/download/v3.8.0/protoc-3.8.0-win64.zip
+  - 7z e protoc.zip -o%PROTOC_PATH%
+
+test_script:
+  - task.exe test-integration
+
+# uncomment to debug builds
+on_finish:
+ - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))