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Developer Troubleshooting Guide

This document can help you to fix the common problems encountered while contributing to TEAMMATES. Note that some of the screenshots might be outdated, but the instructions will remain the same and all necessary modifications will be explained.

Troubleshooting test failures

Common test errors and solutions

  • ERROR: Encountered java.net.ConnectException: Connection refused when running E2E tests.

    SOLUTION: Ensure that your dev server is started prior to running those tests.

  • ERROR: Encountered org.openqa.selenium.WebDriverException: Unable to bind to locking port 7054 within 45000 ms when running tests with Browser.

    SOLUTION: Ensure compatible version of Firefox is installed as specified under Development process document.

  • ERROR: Test failure message encountered when running full test suite: "Selenium cannot find Firefox binary in PATH".

    REASON 1: Path to Firefox executable on local machine is incorrect.

    SOLUTION 1 (on Windows): Specify the correct folder in system PATH variable.

    Open Windows Explorer → Right-click on Computer → Advanced System Settings → "Advanced" tab → Environment Variables… → Select "PATH" from the list → Add directory of "Mozilla Firefox" folder to "Variable value" field.

    REASON 2: Incorrect custom path in test.firefox.path.

    SOLUTION 2: Make sure that the path is set correctly following the example from test.template.properties.

  • ERROR: A handful of failed test cases (< 10).

    SOLUTION: Re-run the failed tests with TestNG, all test cases should pass eventually (it may take a few runs). If there are tests that persistently fail and not addressed in other parts of this guide, you may request for help in the issue tracker.

  • ERROR: Tests fail due to accented characters.

    SOLUTION: Ensure that the text file encoding for your workspace has been set to UTF-8 as specified under Setting up guide.

  • ERROR (on Linux): java.io.IOException: Directory "/tmpfiles" could not be created.

    SOLUTION: Add -Djava.io.tmpdir=/path/to/teammates/tmp for the tests' run configurations. The "tmp" folder in the specified directory needs to be created before running the tests.

Submitting help request

If none of the items in this guide helps with the problem you face, you can post in the issue tracker to request for help. Remember to supply as much relevant information as possible when requesting for help.