Replace Appveyor with GitHub Actions

.github/dependabot.yml

@@ -0,0 +1,8 @@
+version: 2
+updates:
+- package-ecosystem: nuget
+  directory: "/"
+  schedule:
+    interval: daily
+    time: '02:00'
+  open-pull-requests-limit: 10

.github/labeler.yml

@@ -0,0 +1,11 @@
+"test":
+  - Tests/**/*
+
+"CI":
+  - .github/workflows/**/*
+
+"code style":
+  - .editorconfig
+
+"performance":
+  - src/Benchmarks/**/*

.github/workflows/build.yml

@@ -0,0 +1,39 @@
+name: Build artifacts
+
+# ==== NOTE: do not rename this yml file or the run_number will be reset ====
+
+on:
+  push:
+    branches:
+      - master
+      - develop
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use .NET Core 3.1 SDK
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: '3.1.x'
+          source-url: https://nuget.pkg.github.com/graphql-dotnet/index.json
+        env:
+          NUGET_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}
+      - name: Install dependencies
+        run: dotnet restore
+        env:
+          DOTNET_NOLOGO: true
+          DOTNET_CLI_TELEMETRY_OPTOUT: true
+      - name: Build solution [Release]
+        run: dotnet build --no-restore -c Release -p:NoWarn=CS1591 -p:VersionSuffix=$GITHUB_RUN_NUMBER
+      - name: Pack solution [Release]
+        run: dotnet pack --no-restore --no-build -c Release -p:VersionSuffix=$GITHUB_RUN_NUMBER -o out
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v2
+        with:
+          name: Nuget packages
+          path: |
+            out/*
+      - name: Publish Nuget packages to GitHub registry
+        run: dotnet nuget push "out/*" -k ${{secrets.GITHUB_TOKEN}}

.github/workflows/label.yml

@@ -0,0 +1,17 @@
+# This workflow will triage pull requests and apply a label based on the
+# paths that are modified in the pull request.
+#
+# To use this workflow, you will need to set up a .github/labeler.yml
+# file with configuration. For more information, see:
+# https://github.com/actions/labeler/blob/master/README.md
+
+name: Labeler
+on: [pull_request]
+
+jobs:
+  label:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/labeler@v2
+      with:
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"

.github/workflows/publish.yml

@@ -0,0 +1,49 @@
+name: Publish release
+
+on:
+  release:
+    types:
+      - published
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Check github.ref starts with 'refs/tags/'
+        if: ${{ !startsWith(github.ref, 'refs/tags/') }}
+        run: |
+          echo Error! github.ref does not start with 'refs/tags'
+          echo github.ref: ${{ github.ref }}
+          exit 1
+      - name: Set version number environment variable
+        env:
+          github_ref: ${{ github.ref }}
+        run: |
+          version="${github_ref:10}"
+          echo version=$version
+          echo "version=$version" >> $GITHUB_ENV
+      - name: Use .NET Core 3.1 SDK
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: '3.1.x'
+          source-url: https://api.nuget.org/v3/index.json
+        env:
+          NUGET_AUTH_TOKEN: ${{secrets.NUGET_AUTH_TOKEN}}
+      - name: Install dependencies
+        run: dotnet restore
+        env:
+          DOTNET_NOLOGO: true
+          DOTNET_CLI_TELEMETRY_OPTOUT: true
+      - name: Build solution [Release]
+        run: dotnet build --no-restore -c Release -p:NoWarn=CS1591 -p:Version=$version
+      - name: Pack solution [Release]
+        run: dotnet pack --no-restore --no-build -c Release -p:Version=$version -o out
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v2
+        with:
+          name: Nuget packages
+          path: |
+            out/*
+      - name: Publish Nuget packages to Nuget registry
+        run: dotnet nuget push "out/*" -k ${{secrets.NUGET_AUTH_TOKEN}}

.github/workflows/test.yml

@@ -0,0 +1,41 @@
+name: Run code tests
+
+on:
+  pull_request:
+    branches:
+      - master
+      - develop
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: 
+          - ubuntu-latest
+          - windows-latest
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v2
+      - name: Use .NET Core 2.2 SDK
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: '2.2.x'
+      - name: Use .NET Core 3.1 LTS SDK
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: '3.1.x'
+          source-url: https://nuget.pkg.github.com/graphql-dotnet/index.json
+        env:
+          NUGET_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}
+      - name: Install dependencies
+        run: dotnet restore
+        env:
+          DOTNET_NOLOGO: true
+          DOTNET_CLI_TELEMETRY_OPTOUT: true
+      - name: Build solution [Release]
+        run: dotnet build --no-restore -c Release -p:NoWarn=CS1591
+      - name: Build solution [Debug]
+        run: dotnet build --no-restore -p:NoWarn=CS1591
+      - name: Test solution [Debug]
+        run: dotnet test --no-restore --no-build

.github/workflows/wipcheck.yml

@@ -0,0 +1,20 @@
+name: Check if PR title contains [WIP]
+
+on:
+  pull_request:
+    types: 
+      - opened        # when PR is opened
+      - edited        # when PR is edited
+      - synchronize   # when code is added
+      - reopened      # when a closed PR is reopened
+
+jobs:
+  check-title:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Fail build if pull request title contains [WIP]
+        if: ${{ contains(github.event.pull_request.title, '[WIP]') }} # This function is case insensitive.
+        run: |
+          echo Warning! PR title "${{ github.event.pull_request.title }}" contains [WIP]. Remove [WIP] from the title when PR is ready.
+          exit 1

Directory.Build.props

@@ -1,17 +1,28 @@
 <Project>
 
   <PropertyGroup Label="Сommon properties">
+    <VersionPrefix>4.1.0-preview</VersionPrefix>
     <LangVersion>latest</LangVersion>
     <PackageProjectUrl>https://github.com/graphql-dotnet/server</PackageProjectUrl>
-    <RepositoryUrl>https://github.com/graphql-dotnet/server</RepositoryUrl>
-    <RepositoryType>Git</RepositoryType>
+    <RepositoryType>git</RepositoryType>
+    <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <Copyright>Pekka Heikura</Copyright>
     <Authors>Pekka Heikura</Authors>
     <Product>graphql-dotnet server</Product>
     <Company>graphql-dotnet</Company>
-    <DocumentationFile>bin\$(Configuration)\$(TargetFramework)\$(MSBuildProjectName).xml</DocumentationFile>
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+    <Deterministic>true</Deterministic>
+    <!-- https://help.github.com/en/actions/configuring-and-managing-workflows/using-environment-variables -->
+    <ContinuousIntegrationBuild Condition="'$(GITHUB_ACTIONS)' == 'true'">True</ContinuousIntegrationBuild>
+
+    <DebugType>embedded</DebugType>
+    <EmbedUntrackedSources>true</EmbedUntrackedSources>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" Condition="'$(IsPackable)' == 'true'"/>
+  </ItemGroup>
+
   <PropertyGroup>
     <IsNetCore3OnwardsTarget>$(TargetFramework.StartsWith('netcoreapp3.'))</IsNetCore3OnwardsTarget>
   </PropertyGroup>