Using GoogleTest with Trunk Flaky Tests

You can automatically detect and manage flaky tests in your GoogleTest projects by integrating with Trunk. This document explains how to configure GoogleTest to output JUnit XML reports that can be uploaded to Trunk for analysis.

Setup steps

Work through the steps below in order. Once you’ve finished the last one, you’ll be ready to move on to configure uploads in CI.

Generate a compatible test report

Configure the report file path or glob

Test uploads locally

Generating Reports

Before you can integrate with Trunk, you need to generate a Trunk-compatible report. For GoogleTest, the built in XML reporter will work. You can use the --gtest_output=xml argument when you run your built test project:

./build/run_test --gtest_output=xml

Report File Path

By default, the JUnit report will be written to a test_detail.xml file. You can specify a custom directory and filename with:

--gtest_output=xml:<path/to/file.xml>

For example, the following argument writes a JUnit report to ./junit.xml:

--gtest_output=xml:junit.xml

Try It Locally

The Validate Command

SKU="trunk-analytics-cli-x86_64-unknown-linux.tar.gz"
curl -fL --retry 3 \
  "https://github.com/trunk-io/analytics-cli/releases/latest/download/${SKU}" \
  | tar -xz

chmod +x trunk-analytics-cli
./trunk-analytics-cli validate --junit-paths "./junit.xml"

SKU="trunk-analytics-cli-aarch64-unknown-linux.tar.gz"
curl -fL --retry 3 \
  "https://github.com/trunk-io/analytics-cli/releases/latest/download/${SKU}" \
  | tar -xz

chmod +x trunk-analytics-cli
./trunk-analytics-cli validate --junit-paths "./junit.xml"

SKU="trunk-analytics-cli-aarch64-apple-darwin.tar.gz"
curl -fL --retry 3 \
  "https://github.com/trunk-io/analytics-cli/releases/latest/download/${SKU}" \
  | tar -xz

chmod +x trunk-analytics-cli
./trunk-analytics-cli validate --junit-paths "./junit.xml"

SKU="trunk-analytics-cli-x86_64-apple-darwin.tar.gz"
curl -fL --retry 3 \
  "https://github.com/trunk-io/analytics-cli/releases/latest/download/${SKU}" \
  | tar -xz

chmod +x trunk-analytics-cli
./trunk-analytics-cli validate --junit-paths "./junit.xml"

Test Upload

Before modifying your CI jobs to automatically upload test results to Trunk, try uploading a single test run manually. You make an upload to Trunk using the following command:

./trunk-analytics-cli upload --junit-paths "./junit.xml" \
    --org-url-slug <TRUNK_ORG_URL_SLUG> \
    --test-collection-id <TRUNK_TEST_COLLECTION_ID> \
    --token <TRUNK_ORG_TOKEN>

Next Steps

Configure your CI to upload test runs to Trunk. Find the guides for your CI framework below:

GoogleTest

Setup steps

Generating Reports

Report File Path

Try It Locally

The Validate Command

Test Upload

Next Steps

Azure DevOps Pipelines

BitBucket Pipelines

BuildKite

CircleCI

Drone CI

GitHub Actions

GitLab

Jenkins

Semaphore

TeamCity

Travis CI

Other CI Providers

​Setup steps

​Generating Reports

​Report File Path

​Try It Locally

​The Validate Command

​Test Upload

​Next Steps

Azure DevOps Pipelines

BitBucket Pipelines

BuildKite

CircleCI

Drone CI

GitHub Actions

GitLab

Jenkins

Semaphore

TeamCity

Travis CI

Other CI Providers

Setup steps

Generating Reports

Report File Path

Try It Locally

The Validate Command

Test Upload

Next Steps