Run automation tests on HyperExecute using PyTest

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HyperExecute lets you run E2E (end-to-end) Selenium tests at the fastest possible speed. Unlike normal Selenium grid that involves multiple hops during the process of test execution, speed of execution on HyperExecute Grid is super fast as the code is executed on a secure cloud.

End-to-end encryption of the data (including the source code) ensures that the data is secure whether it is rest or in transit. YAML-based workflow helps in realizing the benefits of optimal test execution and orchestration. Along with the unique features offered by HyperExecute, you also get access to a host of LambdaTest cloud features like detailed logs, Smart CI features, network insights, video recording, access to a range of browsers & platforms on the cloud, amongst others.

HyperExecute has several state of the art features to help you optmize your testing process. Go through the features page to take a look at all the tools that HyperExecute offers.

HyperExecute is compliant with leading security standards - SOC2, GDPR, and CCPA. Refer to HyperExecute Getting Started Guide for more information about features offered by HyperExecute.

All the code samples in this documentation can be found in the PyTest HyperExecute GitHub repository. You can either download or clone the repository to run tests on the HyperExecute Grid.

Gitpod

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Follow the below steps to run Gitpod button:

1. Click 'Open in Gitpod' button (You will be redirected to Login/Signup page).

2. Login with Lambdatest credentials. You will be redirected to HyperExecute dashboard with pop-up confirming to 'Proceed' to Gitpod editor in the new tab and current tab will show hyperexecute dashboard.

Getting started with PyTest tests on HyperExecute

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The HyperExecute CLI is used for triggering tests on HyperExecute Grid. The CLI provides a host of other useful features that accelerate test execution. You should download the HyperExecute CLI binary on the host system for running tests on HyperExecute. Shown below is the HyperExecute CLI download location for different platforms:

Platform	HyperExecute CLI download location
Windows	https://downloads.lambdatest.com/hyperexecute/windows/hyperexecute.exe
macOS	https://downloads.lambdatest.com/hyperexecute/darwin/hyperexecute
Linux	https://downloads.lambdatest.com/hyperexecute/linux/hyperexecute

For detailed information about HyperExecute CLI, please refer to HyperExecute CLI section in the HyperExecute getting started guide.

The fundamental difference between running Selenium tests on a cloud Selenium Grid and HyperExecute Grid is that you need not have any configurations on the local machine (i.e. the machine from where HyperExecute CLI is triggered). This is because the source code from the local machine will be zipped and securely uploaded to the cloud where the execution will be performed on the remote Virtual Machine (VM).

Prerequisites for running PyTest tests on HyperExecute Grid

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Before using HyperExecute, you have to download HyperExecute CLI corresponding to the host OS. You also need to export the environment variables LT_USERNAME and LT_ACCESS_KEY that are available in the LambdaTest Profile page. Follow the below mentioned steps to set the environment variables LT_USERNAME & LT_ACCESS_KEY from the terminal.

For macOS:

export LT_USERNAME=LT_USERNAME
export LT_ACCESS_KEY=LT_ACCESS_KEY

For Linux:

export LT_USERNAME=LT_USERNAME
export LT_ACCESS_KEY=LT_ACCESS_KEY

For Windows:

set LT_USERNAME=LT_USERNAME
set LT_ACCESS_KEY=LT_ACCESS_KEY

For PyTest, the project dependencies must be available for installation either in requirements.txt (global) or pyproject.toml (venv).

The project requirements (or pre-requisites) must be installed as a part of the pre step in HyperExecute. This step remains the same irrespective of whether you are using global or virtual installatation of Python packages.

Here are the pre steps as mentioned in the sample Matrix and Auto-Split YAML files.

pre:
  - pip3 install -r requirements.txt --cache-dir CacheDir

To reduce the upload size, it is recommended to include files to be added in the ignore list in .hyperexecuteignore which is located at the root of the project. You can modify the content of .hyperexecuteignore as per your project requirements:

txt
hyperexecute
hyperexecute.exe
*.zip
artifacts
logs

For demonstration, the PyTest tests are located in the tests folder. Shown below is the directory structure:

tests
 |
 |---- lt_sample_todo.py
 |---- lt_selenium_playground.py

The YAML files for Matrix execution and Auto-Split execution are located in the yaml folder of the project:

project_root_folder
     |
     |
    yaml
      |
      | --- win/pytest_hyperexecute_matrix_sample.yaml
      | --- win/pytest_hyperexecute_autosplit_sample.yaml

Running PyTest Tests on HyperExecute Grid using Matrix Execution

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Shown below is the HyperExecute YAML file for matrix execution:

---
version: 0.1
globalTimeout: 90
testSuiteTimeout: 90
testSuiteStep: 90

matrix:
  files: ["tests/lt_sample_todo.py", "tests/lt_selenium_playground.py"]

runson: win

env:
#  PAT: ${{ .secrets.testKey }}
 TARGET_OS: Windows 10

cacheKey: '{{ checksum "requirements.txt" }}'
cacheDirectories:
  - CacheDir
pre:
  - mkdir CacheDir
  - pip3 install -r requirements.txt --cache-dir CacheDir
post:
  - cat yaml/win/pytest_hyperexecute_matrix_sample.yaml

mergeArtifacts: true

uploadArtefacts:
  - name: TestReports
    path:
    - reports/**

testSuites:
  - pytest -s --verbose --html=reports/report.html $files

Here are the major pointers that you should know for executing PyTest tests using matrix execution:

• Global timeout, test suite timeout, and test suite step timeout : 90 minutes

globalTimeout: 90
testSuiteTimeout: 90
testSuiteStep: 90

• The target platform is set to win using the runson key

runson: win

• A matrix of [files] is created for running the PyTest tests on the target platform (i.e. win).

matrix:
  files: ["tests/lt_sample_todo.py", "tests/lt_selenium_playground.py"]

• Test dependencies and required packages are installed as a part of the pre step

pre:
  - pip3 install -r requirements.txt --cache-dir CacheDir

• Commands to be run after the test execution are listed in the post step. In the example, we cat the contents of yaml/pytest_hyperexecute_matrix_sample.yaml

post:
  - cat yaml/win/pytest_hyperexecute_matrix_sample.yaml

• The command(s) mentioned in testSuites key are represented as an array of strings. For demonstration, the matrix of OS and files are run using the pytest command.

testSuites:
  - pytest -s --verbose --html=reports/report.html $files

Test Execution using Matrix Multiplexing

The CLI option --config is used for providing the custom HyperExecute YAML file (i.e. yaml/pytest_hyperexecute_matrix_sample.yaml). Run the following command on the terminal to trigger the tests in Python files on the HyperExecute Grid. The --download-artifacts option is used to inform HyperExecute to download the artifacts for the job.

Shown below is HyperExecute CLI command that has to be triggered from the root folder of the project:

./hyperexecute --download-artifacts --config --verbose yaml/pytest_hyperexecute_matrix_sample.yaml

Visit HyperExecute Automation Dashboard to check the status of execution:

Shown below is the execution screenshot when the YAML file is triggered from the terminal:

Running PyTest Tests on HyperExecute Grid using Auto-split Execution

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Shown below is the HyperExecute YAML file for auto-split execution:

---
version: 0.1
globalTimeout: 90
testSuiteTimeout: 90
testSuiteStep: 90

runson: win

autosplit: true
retryOnFailure: true

maxRetries: 5
concurrency: 2

mergeArtifacts: true

env:
#  PAT: ${{ .secrets.testKey }}
 TARGET_OS: Windows 10

cacheKey: '{{ checksum "requirements.txt" }}'
cacheDirectories:
  - CacheDir
pre:
  - mkdir CacheDir
  - pip3 install -r requirements.txt --cache-dir CacheDir
post:
  - cat yaml/win/pytest_hyperexecute_autosplit_sample.yaml

uploadArtefacts:
  - name: TestReports
    path:
    - reports/**

testDiscovery:
  type: raw
  mode: dynamic
  command: grep -nri 'class' tests -ir --include=\*.py | sed 's/:.*//'

testRunnerCommand: pytest -s  --verbose --html=reports/report.html $test

Here are the major pointers that you should know for executing PyTest tests using auto-split execution:

• The target platform is set to win using the runson key

runson: win

• Auto-split is set to true in the YAML file

autosplit: true

• retryOnFailure is set to true to instruct HyperExecute to retry the failed commands. The retry operation is carried out till the number of retries mentioned in maxRetries are exhausted or the command execution results in a Pass.

retryOnFailure: true
maxRetries: 5

• The concurrency (i.e. number of parallel sessions) is set to 2.

concurrency: 2

• Test dependencies and required packages are installed as a part of the pre step.

pre:
  - pip3 install -r requirements.txt --cache-dir CacheDir

• Commands to be run after test execution are listed in the post step. In the example, we cat the contents of yaml/pytest_hyperexecute_autosplit_sample.yaml

post:
  - cat yaml/win/pytest_hyperexecute_autosplit_sample.yaml

The testDiscovery directive contains the command that provides the details of test execution.

testDiscovery:
  type: raw
  mode: dynamic
  command: grep -nri 'class' tests -ir --include=\*.py | sed 's/:.*//'

testRunnerCommand: pytest -s  --verbose --html=reports/report.html $test

Running the below command on the terminal will give a list of Python files that are located in the Project folder:

grep -nri 'class' tests -ir --include=\*.py | sed 's/:.*//'

tests/lt_selenium_playground.py
tests/lt_sample_todo.py

Command to trigger Autosplit execution

Shown below is HyperExecute CLI command that has to be triggered from the root folder of the project:

./hyperexecute --download-artifacts --config --verbose yaml/pytest_hyperexecute_autosplit_sample.yaml

Visit HyperExecute Automation Dashboard to check the status of execution:

Shown below is the execution screenshot when the YAML file is triggered from the terminal:

Pre Steps, Post Steps, Dependency Caching, and Artifacts Management

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Here are some of the advanced features (i.e. dependency caching, retries, post, and artifacts management) of HyperExecute that must be leveraged for accelerated package installation and verifying the results of the test execution. All the advanced features are applicable to Matrix and Auto-split modes.

Pre Steps and Dependency Caching

To leverage the advantage offered by Dependency Caching in HyperExecute, the integrity of requirements.txt is checked using checksum functionality

cacheKey: '{{ checksum "requirements.txt" }}'

By default, pip in Python saves the downloaded packages in the cache so that next time, the package download request can be serviced from the cache (rather than re-downloading it again). The caching advantage offered by pip can be leveraged in HyperExecute whereby the downloaded packages can be stored (or cached) in a secure server for future executions. The packages available in the cache will only be used if the checksum stage results in a Pass.

The cacheDirectories directive is used for specifying the directory where the packages have to be cached. The mentioned directory will override the default directory where Python packages are normally cached, further information about Caching in pip is available here.

The packages downloaded using pip will be cached in the directory (or location) mentioned under the cacheDirectories directive.

In the sample code, the downloaded packages are cached in CacheDir folder that is located in the project's root. The folder is automatically created when the packages mentioned in requirements.txt are downloaded.

cacheDirectories:
  - CacheDir

Content under the pre directive is the precondition that will be run before the tests are executed on the HyperExecute grid. The --cache-dir option in pip3 is used for specifying the cache directory. It is important to note that downloaded packages that are cached are securely uploaded to a secure cloud before the execution environment is auto-purged after build completion. Please modify requirements.txt as per the project requirements.

pip3 install -r requirements.txt  --cache-dir CacheDir

Post steps

The post directive contains a list of commands that run as a part of post-test execution. In the sample shown below, the contents of yaml/pytest_hyperexecute_matrix_sample.yaml are read using cat as a part of the post step.

post:
  - cat yaml/win/pytest_hyperexecute_matrix_sample.yaml

Retries

The retryOnFailure directive when set to true instructs HyperExecute to retry failed command(s). The retry operation is carried out till the number of retries mentioned in maxRetries are exhausted or the command execution results in a pass. Here is the combination of retryOnFailure and maxRetries that can be used for retrying command (or test) execution:

  retryOnFailure: true
  maxRetries: 5

Artifacts Management

The mergeArtifacts directive (which is by default false) is set to true for merging the artifacts and combing artifacts generated under each task.

The uploadArtefacts directive informs HyperExecute to upload artifacts [files, reports, etc.] generated after task completion. In the example, path consists of a regex for parsing the directory (i.e. reports that contains the test reports).

mergeArtifacts: true

uploadArtefacts:
  - name: TestReports
    path:
    - reports/**

HyperExecute also facilitates the provision to download the artifacts on your local machine. To download the artifacts, click on Artifacts button corresponding to the associated TestID.

You can download the artifacts by clicking on the Download button as shown below:

Secrets Management

In case you want to use any secret keys in the YAML file, the same can be set by clicking on the Secrets button the dashboard.

Now create secrets that you can use in the HyperExecute YAML file.

Navigation in Automation Dashboard

Every test run on the HyperExecute Grid has a unique jobId associated with it. Each jobId can in turn constitute single (or multiple) groupId(s). You can visit HyperExecute automation dashboard for checking the status of the test execution.

HyperExecute lets you seamlessly navigate between jobId's and taskId's. The same can be done by navigating to Automation -> HyperExecute logs -> Corresponding jobId on the HyperExecute automation dashboard.

The snapshot below shows how to navigate to the respective testID for viewing the Selenium logs:

For any query or doubt, please feel free to contact us via 24×7 chat support or you can also drop a mail to support@lambdatest.com.
Happy testing!