Add a to_junit method to standardize the report format of TestSuiteResult

[Kranium2002]

Description

This PR adds to_Junit function to TestSuitResult Class

Related Issue

This PR is related to issue number #1685

Type of Change

• 📚 Examples / docs / tutorials / dependencies update
• 🔧 Bug fix (non-breaking change which fixes an issue)
• 🥂 Improvement (non-breaking change which improves an existing feature)
• 🚀 New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to change)
• 🔐 Security fix

Checklist

• I've read the CODE_OF_CONDUCT.md document.
• I've read the CONTRIBUTING.md guide.
• I've updated the code style using make codestyle.
• I've written tests for all new methods and classes that I created.
• I've written the docstring in Google format for all the methods and classes that I used.

[Kranium2002]

@luca-martial Would you please review my PR ?

[kevinmessiaen]

Thanks for the PR,

my concern is that we lose too much information about the tests when exporting and reading the report don't allow to understand the results.

In my opinion we should generate report like this:

<?xml version="1.0" encoding="UTF-8"?>
<testsuites time="8.605871" tests="3">
    <testsuite name="Test accuracy (model=..., dataset=..., metric=0.5)" time="10.605871">
        <testcase name="metric_name" time="6.605871" />
    </testsuite>
    <testsuite name="Test F1 (model=..., dataset=..., metric=0.5)" time="2">
        <testcase name="metric_name" time="2">
            <failure message="Test failed with metric of 0.3" type="TestFailed">
                <!-- Full Test result information here (metric, output_ds, messages, ...) -->
            </failure>
        </testcase>
    </testsuite>
    <testsuite name="Test with error (model=..., dataset=..., metric=0.5)" time="2">
        <testcase name="metric_name" time="2">
            <failure message="Insert error message here" type="Error">
                <!-- stacktrace given in result.message) -->
            </failure>
        </testcase>
    </testsuite>
</testsuites>

[Kranium2002]

@kevinmessiaen I still need help in implementing the runtime calculation logic. Would you please help me with that?

[kevinmessiaen]

@kevinmessiaen I still need help in implementing the runtime calculation logic. Would you please help me with that?

Sure, let me look at it

[kevinmessiaen]

Let's merge without the execution time of each tests at first. I created an issue to tackle the problem of adding execution time: #1759