AppVeyor for Linux

Posted on March 06, 2018

Dear AppVeyor friends,

We’d like to thank you for building and testing your awesome Windows applications on AppVeyor! Your trust and support have always been driving us to evolve the service.

Today, we want to give you twice as much value with the addition of Linux platform! Now you can run your builds side-by-side on Ubuntu and Windows images.

It’s not a weekend project and we have a strong commitment to make AppVeyor a full-featured cross platform solution.

Evolved from our Windows offering, AppVeyor for Linux has some unique features:

  • Connect multiple version control systems: GitHub, Bitbucket, GitLab, VSTS, Kiln and any other Git, Mercurial or Subversion repository.
  • Configure CI for your projects via UI or in dot-file.
  • Full sudo access to VM running build.
  • Promoted deployments - build once and deploy the same packages to multiple environments.
  • Official out-of-the-box .NET Core support - automatic build, test and packaging of .NET Core projects. Proof: build, config, website - dedicated blog post is coming!
  • SQL Server 2017 for Linux.
  • Bash and PowerShell Core for controlling build flow.
  • Single configuration file for both Windows and Linux builds.
  • Docker support.
  • Built-in NuGet server.

How to get started

AppVeyor for Linux is currently in private beta, available by request. To participate in beta just reply to this message and provide your AppVeyor account details.

We have prepared a Getting started with AppVeyor for Linux guide where you can also find a list of supported features and pre-installed software.


Perhaps what is most amazing about the addition of this new Linux platform is that it will not affect our low pricing! Once out of beta, the new Ubuntu image will be available to every account, free or paid. However, Premium accounts with two or more concurrent jobs will benefit the most as they will be able to run their tests on two platforms simultaneously.


Best regards,
AppVeyor team

Follow us on Twitter: @appveyor

Scheduled builds for free accounts

Posted on November 08, 2017

Builds run on schedule is a feature we’ve been offering since early days of AppVeyor. It works great for many private and OSS projects. However, over the time we started noticing that there are a lot of “abandoned” projects with maintainers once configured scheduled builds and then leaving them running for the same commit over and over again.

Starting today we are making scheduled builds an optional feature for free accounts which is disabled by default. Paid accounts will continue to have scheduled builds enabled by default.

If you are the maintainer of OSS project and your CI workflow requires scheduled builds contact AppVeyor team and briefly describe your needs to request this feature.

Best regards,
AppVeyor team

Follow us on Twitter: @appveyor

AppVeyor Enterprise is now available

Posted on October 03, 2017

Today we are excited to announce immediate availability of AppVeyor Enterprise!

AppVeyor is being used by more than 50,000 developers and we’ve run 10,000,000+ builds. As many companies had been asking about the possibility of installing AppVeyor behind their firewalls we started looking into just that. AppVeyor was originally born as a cloud product and tied to Azure. During the past few years we’ve been refactoring and maturing the AppVeyor codebase to fit into an on-premise scenario, and it is finally here!

AppVeyor Enterprise benefits:

  • Clean isolated environment for every build. Each new build runs on a new pristine VM which is immediately deleted afterwards to keep your costs low. This is the feature that we’ve been evangelizing from the very beginning and which we think sets AppVeyor apart from other products.

  • Multiple clouds to provision build VMs. You can run builds in different clouds (Azure, Google, Amazon) or on a Hyper-V server. On we’re distributing load between clouds and we have multi-zone failover configurations and switch cloud providers depending on build image. All this cool stuff is available to you now!

  • Works with any language/stack. You can easily configure build projects with versioned AppVeyor YAML. We’ve gathered so much knowledge from the AppVeyor community and now you can use all these recipes for your own projects!

  • Works with your source control. AppVeyor can fetch the code from GitHub, Bitbucket, GitLab, Kiln or any other regular Git, Mercurial or SVN repository.

  • Built-in deployment. With AppVeyor Enterprise you can build once and promote the same package to multiple deployment environments. Hosted AppVeyor has been used by customers more than 1,200,000 times to deploy their applications.

  • Pricing for the cloud era. With AppVeyor Enterprise you can complete your test suite faster and with less cost. You get unlimited clouds, unlimited concurrent jobs, unlimited build and deploy agents. Pricing is based on the size of your team and starts from $300/month per 10 users.

Request your free trial of AppVeyor Enterprise today!

Best regards,
AppVeyor team

Follow us on Twitter: @appveyor

Sharing configuration between branches in appveyor.yml

Posted on August 01, 2017

The problem

There are two options to have branch-specific configuration with appveyor.yml:

  1. Commit appveyor.yml into each branch with branch-specific settings.
  2. Use Conditional build configuration where appveyor.yml has a list of configurations for different branches.

The problem with 1st approach is merging as you are overriding appveyor.yml in the base branch with one from the branch being merged.

2nd approach requires appveyor.yml of the following format:

# configuration for "master" branch
# build in Release mode and deploy to Azure
      - master

  configuration: Release

    provider: AzureCS

# configuration for all branches starting from "dev-"
# build in Debug mode and deploy locally for testing
      - /dev-.*/

  configuration: Debug

    provider: Local

# "fall back" configuration for all other branches
# no "branches" section defined
# do not deploy at all
  configuration: Debug

While this approach works great in the most cases there is one incovenience though - with large configuration and many branches appveyor.yml becomes really unmanageable and error-prone as you have to repeat (copy-paste) entire configuration for every branch.

The solution

We just deployed an update to AppVeyor that allows sharing common configuration between branches in a single appveyor.yml!

There is new for node with a list of branch-specific configurations overriding common configuration defined on the top most level, for example:

# common configuration for ALL branches
  MY_VAR1: value-A

- do_something_on_init.cmd

- do_something_on_install.cmd

configuration: Debug

# here we are going to override common configuration

# override settings for `master` branch
      - master

  configuration: Release

    provider: FTP

# override settings for `dev-*` branches
      - /dev-.*/

    MY_VAR2: value-B

    provider: Local

In the example above we define environment, init and install sections for all branches as well as stating that default configuration is Debug. Then, for master branch we override default settings by changing configuration to Release and adding deployment with FTP provider. For dev-* branches we define a second environment variable MY_VAR2 and enable deployment to Local environment.

Configuration merging rules:

  • Scalar values such as image, version, configuration, platform, etc. defined on branch level override default ones;
  • Script sections such init, install, before_build, test_script, etc. defined on branch level override default ones;
  • Environment variables defined in environment sections are merged (new) and overridden (existing);
  • Build matrix defined on branch level merges with default one;
  • deploy, artifacts, notifications section can be either overridden or extended.

For example, consider the following configuration:

- path: bin

- provider: Local

- provider: Email

      - master

  - path: docs

  deploy: off

    provider: Slack

In the example above we do the following:

  • For master branch we adding docs folder to artifacts definition, so both bin and docs folders collected. Both default and branch-specific collections were merged.
  • For master branch we disable any deployment. off or none on branch-level clears default collection.
  • For master branch we replace all notifications on default level with a single Slack notification.

Best regards,
AppVeyor team

Follow us on Twitter: @appveyor

CodeCov Test Coverage Integration

Posted on March 17, 2017

This is a guest post by Cedd Burge, Software Developer Lead at RES.

CodeCov visualises code coverage and can enforce standards via GitHub and AppVeyor. More information is available on

This post is written from the point of view of someone (me) who is already proficient in C# and unit testing, but was new to AppVeyor and integrating CodeCov with GitHub.

It contains from scratch steps to run CodeCov test coverage on a sample C# project using GitHub, AppVeyor, OpenCover and XUnit. You can look at the repo I created to test this post if you get stuck.

Create a new GitHub Repo

If you are new to GitHub, see this getting started guide, otherwise simply create a new repo (YourRepositoryName from now on) and git clone it somewhere convenient.

Create a new System Under Test (SUT) project and a new Test project

In my version of Visual Studio (Community 2015), you can do this by clicking on “File - New - Project” on the main menu, then “Class Library” from “Templates - Visual C#”. Give it a interesting name, which I will assume to be YourSUTProjectName for the rest of this post.

Repeat this for the test project, which I will assume to be YourTestProjectName.

Add the xunit, xunit.runner.visualstudio and xunit.runner.console nuget packages to your test project.

Add an XUnit test to YourTestProjectName and the corresponding thing under test to YourSUTProjectName, or copy and paste mine.

Run this test to make sure it passes.

Setup AppVeyor Integration

You will need to link an AppVeyor account to your GitHub one, so let’s do that:

  • Navigate to your repo in GitHub
  • Click “Settings” on the repo
  • Click “Integrations and services”
  • Click “Browse Directory”
  • Click “AppVeyor”
  • Click “Configure”
  • Click “Grant Access”

Now Log in to, probably using your GitHub account

  • Click “Projects”
  • Click “New Project”
  • Choose YourRepositoryName and click “Add”

Sign up with CodeCov

  • Go to and click “Sign up with GitHub”
  • Click “Add new repository” and choose YourRepositoryName.
  • Make a note of the Upload token (YourUploadToken from now on)

Run Coverage Analysis Locally

When working with AppVeyor, it always makes sense to test on your own computer first. The feedback is immediate and you iterate very quickly. It takes a lot longer to modify the appveyor.yml file, push it and wait for a build to go through. Also, if it works locally but doesn’t work on AppVeyor, you know the problem is a configuration difference between your computer and the AppVeyor environment (eg a different version of msbuild).

However, this step is not required, so skip to “Run Coverage Analysis on AppVeyor” if you wish. is a tool for visualising and integrating coverage data, which we need to create. We will use OpenCover to do this.


Add the OpenCover nuget package to the solution (which will install OpenCover.Console.exe, probably in packages\OpenCover.4.6.519\tools) and then run the following in a command window.

  • YourTestDLL is the relative path to the dll for your test project, eg. Tests\bin\Debug\tests.dll
  • -register[:user] asks OpenCover to register the code coverage profiler under HKEY_CURRENT_USER, which doesn’t require the user to have administrative permissions.
  • -target: asks OpenCover to run XUnit
  • -targetargs: are arguments that OpenCover passes to XUnit
  • -output: is the file to contain the coverage results
  • YourSUTNamepace, YourTestNamespace are the namespaces for your Test and SystemUnderTest projects. If these filters aren’t specified OpenCover will try and analyse everything, including the XUnit dlls.
packages\OpenCover.4.6.519\tools\OpenCover.Console.exe -register:user -target:"packages\xunit.runner.console.2.2.0\tools\xunit.console.x86.exe" -targetargs:"YourTestDLL -noshadow" -output:".\coverage.xml" -filter:"+[YourSUTNamepace*]* -[YourTestNamespace*]*"


Run the following on a PowerShell command line. This talks to CodeCov and downloads a bash script to upload the coverage.

Invoke-WebRequest -Uri '' -OutFile

Then you can run the following in a Bash command line (You can use Git Bash on Windows). YourUploadToken is the CodeCov token that you took a note of earlier, or available on the project settings page on CodeCov (eg -f "coverage.xml" -t YourUploadToken

The output will show a url with the results (eg

Run Coverage Analysis on AppVeyor

Now that the coverage upload is working locally, we can run it on AppVeyor.

Add and commit an appveyor.yml file to the root of the repository as below.

  • YourSolution is the relative path of the .sln file to build (eg codecov-on-appveyor.sln)
  • YourUploadToken is not required if you are uploading from a public repo with AppVeyor, but is included in case you are using a private repo.
  • %xunit20%. XUnit is installed on the AppVeyor build environment by default, and AppVeyor provide the %xunit20% environment variable for the installation path.
 - nuget restore
 - msbuild /verbosity:quiet "YourSolution"
 - .\packages\OpenCover.4.6.519\tools\OpenCover.Console.exe -register:user -target:"%xunit20%\xunit.console.x86.exe" -targetargs:"YourTestDll -noshadow" -output:"coverage.xml" -filter:"+[YourSUTNamepace*]* -[YourTestNamespace*]*"
  - ps: |
      $env:PATH = 'C:\msys64\usr\bin;' + $env:PATH
      Invoke-WebRequest -Uri '' -OutFile
      bash -f "coverage.xml" -t YourUploadToken

Add Coverage Graphics to the Repository

There are various badges and graphs available. Click on your project in CodeCov, then “Settings” and “Badge” (eg to see what’s available.

Copy and paste a code snippet from this in to your, such as this one Code Coverage Badge.

You can look at my readme for example badges

Integrate CodeCov with Pull Requests

CodeCov automatically integrates with GitHub pull requests (as long as you signed up to CodeCov via your GitHub account) which you can see on this pull request.

It will show some statistics, such as the increase or decrease in coverage, and by default will fail the build if coverage decreases. You can configure this with a ‘codecov.yml’ file in the root of your repository.

Install the browser plugin

There is a CodeCov browser plugin, for all reputable browsers, that adds coverage when browsing Code is highlighted in red / green, and a coverage percentage is shown.


It can be difficult keeping control of test coverage for a project, especially with distributed and transient team structures. The combination of GitHub, AppVeyor OpenCover and CodeCov make it very easy to visualise the coverage, and allow you to enforce standards to ensure that it improves over time.

Best regards,
Cedd Burge

Follow Cedd on Twitter: @cuddlyburger
Follow AppVeyor on Twitter: @appveyor