Power Apps Test Engine

This is currently an experimental project.

Overview

Power Apps Test Engine is an open source project with the aim of providing makers with a single automated testing platform for all Power Apps apps. Test Engine has the following benefits:

• Power Fx test authoring - Makers can author tests in YAML format using the familiar Power Fx language.
• DOM abstraction - Tests are authored using references to control names that are defined at design-time. Test authors do not need to write JavaScript, and do not need to be familiar with the browser DOM of the app's rendered output.
• Connector mocking - Test authors can optionally create mocks of network calls, typically used when Power Apps make calls to connectors. This allows the app to be tested without modification to the app itself while avoiding any unwanted side-effects of the external APIs.
• Screenshot and video recording support - Test Engine can take screenshots at any point during your test execution, and records videos of the test run. This can be very helpful to diagnose failed tests and to understand what the actual experience of the failed test case was.

Build this project using the instructions below. This will create a local executable that can be used to run tests from your machine.

Test Engine uses Playwright to orchestrate the tests.

Test Engine currently supports Power Apps canvas apps.

Getting Started

To get started, you will need to clone the Test Engine code from GitHub, locally build the project, and install the browser(s) you wish to use to execute the tests. Once you have the Test Engine executable built, the repo contains a library of sample test plans and apps you can use to exercise the tool.

Prerequisites for building Test Engine

1. Install .NET Core 6.0.x SDK
2. Ensure that your MSBuildSDKsPath environment variable is pointing to .NET Core 6.0.x SDK.
3. Make sure PowerShell is installed.

Build locally

Run the commands below in PowerShell. These commands will clone the repo to your desktop, will build the executable, and will install browser prerequisites needed for the tests to execute.

# Clone GitHub repo
git clone https://github.com/microsoft/PowerApps-TestEngine.git

# Change to the PowerAppsTestEngine folder
cd PowerApps-TestEngine\src\PowerAppsTestEngine

# Build
dotnet build

# Install browsers required by Playwright
.\bin\Debug\PowerAppsTestEngine\playwright.ps1 install

If you face trouble running dotnet build try Clean locally first.

Clean locally

Run the command below in PowerShell to clean untracked files. Please make sure to run this in the root folder.

# Clean
.\clean.cmd

Once done, continue following Build locally

Using the provided samples

Test Engine includes a library of samples you can use to get started. Each sample consists of solution that you can directly import into your Power Apps environment, and a test plan file that corresponds to the Power Apps canvas app that is in the solution.

To use the samples, import the solution into your environment and then execute the corresponding test plan file with Test Engine.

See Samples Introduction for more sample solutions.

1. Import a sample solution

Choose one of the packaged solutions within the Samples folder (e.g., PowerApps-TestEngine\samples\basicgallery\BasicGallery_1_0_0_3.zip). You can import solutions using the Dataverse portal, or by using the PAC CLI command line tool. Remember the environment that you imported the solution to.

2. Set up the config file

You can use a config file to specify values needed to run the tests, or you can provide these same values on the command line when executing the app. This example shows using the config file.

Create a config.dev.json file inside the PowerAppsTestEngine folder.

Here is an example of its contents (a file config.json is provided in the repo as an example):

{
  "environmentId": "",
  "tenantId": "",
  "testPlanFile": "",
  "outputDirectory": ""
}

Fill in the required properties:

• environmentId: The ID of the Environment into which you imported the solution
• tenantId: The ID of your tenant

Both environmentId and tenantId can be found by opening the Settings > Session details dialog from within the environment:

• testPlanFile: Path to the test plan YAML filethat you wish to run. (e.g., ../../samples/basicgallery/testPlan.fx.yaml)
• outputDirectory: Path to folder where test output/results will be placed.

For more information about the config and the inputs to the command, please view this link.

Set up user authentication

This refers to the account that Test Engine will use to execute the test.

Test Engine does not support multi-factor authentication. Use an account that requires only a username and password to sign in for your tests.

Test credentials cannot be stored in test plan files. Rather, they are stored in PowerShell environment variables. The test plan file contains references to which environment variables are used for credentials. For example, the following snippet indicates that the user1Email and user1Password environment variables will be used:

environmentVariables:
  users:
    - personaName: User1
      emailKey: user1Email
      passwordKey: user1Password

Please view the YAML/Users reference page for more information.

Run test

Once the config.dev.json and credentials are configured, you are ready to run the test. Use the following command:

# Run test
dotnet run

When the run is complete, check the folder specified in the outputDirectory configuration setting for test run results.

Check Samples Introduction for more sample solutions.

Languages and regions that use period as the decimal separator

The syntax of Power Fx can differ based on your system's language settings. Use the locale property in the testSettings section of the test plan file to specify the locale in which your Power Fx is written. (See locale in test settings). This is useful if you are working across regions that use different decimal or thousands separators. For example, , instead of . for decimals and ; instead of ,.

See the following samples that have the locale property specified as examples of its usage:

1. ; instead of , for separator - testPlanForRegionUsePeriodAsDecimalSeparator.fx.yaml
2. , instead of . for separator - testPlanWithCommaForDecimal.fx.yaml.fx.yaml

NOTE: Since the integration tests that use these samples run in an en-US locale, the testPlanWithCommaForDecimal sample represents absolute numbers with decimals as , but their string representations of the decimals are still . to match the locale these tests are running in. Additionally, this is also because the corresponding sample app is also hosted in an en-US locale. But for real-world applications make sure the syntax of the tests represent the locale for the app and environment as well.

What to do next

Option 1 - Author your own test plan: Modify the testPlan.fx.yaml of a provided sample to run tests created on your own. You can also modify the sample Power App apps and create new tests for your updated app. Check Power Fx for writing functions. The sample test plan will be here.

Option 2 - Download recorded tests from Test Studio: If you have tests that you have recorded in Test Studio, you can download them from Test Studio to reuse in Test Engine.

• Make use of the "Download suite" button available in Test Studio to download the test plan. Choose the test suite to download if you have multiple test suites.
• Alternatively you can make use of the "Download" button available under each test suite.
• Make sure you update the config file and user configurations if you are using a different tenant or environment for this app.
• Now you should be ready to run the test with dotnet run

More about the test plan

Yaml Format

Power Fx

How apps are referenced in test plan files

The way that the test plan files refer to the target app differs depending on whether or not the app is in a solution or not. We recommend using solutions whenever possible because they provide greater portability.

• Working with apps within Solutions - Test plan files for apps that are part of solutions are portable across environments. For solution-based apps, the test plan refers to the target app with a logical name (the appLogicalName property) which does not change if the app moves to a different environment.

  1. Locate the App Logical name for the app
     1. In the Solutions tab, open the solution that contains the app
     2. Select Apps
     3. Note the Name column. It is the app logical name (Not the Display name)
  2. Update your test plan file
     1. Open the test plan YAML file for the app
     2. Fill in the appLogicalName value with the new App logical name

• Working with apps outside of Solutions - If you move an app that is not part of a solution to a new environment, you will need to manually update the test plan file to refer to the app. How to update a test plan file for a non-solution based app:

  1. Locate the App ID for the app in its new location
     1. In the Apps list, locate the app and open the context menu
     2. Select Details
     3. Note the App ID GUID on the Details pane
  2. Update your test plan file
     1. Open the test plan YAML file for the app
     2. Fill in the appId with the new App ID

Power Platform CLI usage

To get started, download and install the Microsoft Power Platform CLI.

Review this documentation regarding the execution of Test Engine in Power Platform CLI here.

Known limitations

See the Test Engine documentation for known limitations.

Frequently asked questions

1. The test execution failed. What should I do?

We suggest checking the logs and recording in the test result folder to see what caused the error. Common issues are listed below:

• Entering incorrect authentication information
• Requiring authorization to certain controls or features (you will need to manually open the app and grant the access before using test engine to run tests on the app)
• Having a bad network connection (which causes Test Engine to not load the app)

Occasionally, you might get a timeout error due to the app taking longer to load than the default 30 second timeout. Most of the time, re-running the program will solve this problem. If this error still happens, you will probably want to check the recording as mentioned. If your app takes a while to load, you can also modify the timeout limit in test settings to give it more time.

If these steps don't help, you can run

# Run test with trace logs
dotnet run -l trace

and ask for support by adhering to this.

2. What is the difference between the settings passed in via command line/config.json vs settings located inside the YAML?

The settings passed in via command line or config.dev.json are settings that either start off the test (link to the test plan) or they are settings that are likely to change due to the environment the app being test in is located.

Settings located in the YAML should be able to be "imported" with the solution, so another person could take the solution and corresponding test plan and use the two of them without any modifications.

Example: environmentId changes if the app is imported to a another tenant/environment, and so it is located as a command line or config.json setting.

How to report issues

You are invited to contribute corrections to both code and documentation. See the below section entitled "Contributing to Test Engine code and documentation" for further info. You may also file GitHub issues for Test Engine to make Microsoft and the community aware of issues.

Contributing to Test Engine code and documentation

This project welcomes contributions and suggestions to both code and documentation. Most contributions require you to agree to a Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us the rights to use your contribution. For details, visit https://cla.opensource.microsoft.com.

Note: We are not accepting contributions for content within the JS folder.

When you submit a pull request, a CLA bot will automatically determine whether you need to provide a CLA and decorate the PR appropriately (e.g., status check, comment). Simply follow the instructions provided by the bot. You will only need to do this once across all repos using our CLA.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.

Trademarks

This project may contain trademarks or logos for projects, products, or services. Authorized use of Microsoft trademarks or logos is subject to and must follow Microsoft's Trademark & Brand Guidelines. Use of Microsoft trademarks or logos in modified versions of this project must not cause confusion or imply Microsoft sponsorship. Any use of third-party trademarks or logos are subject to those third-party's policies.