Add Rust Autotest (DB Entries)

[1whatleytay]

This PR is paired with markus-autotesting PR. It adds an example autotest target to rake db:autotest.

Motivation and Context

Rust autotesting allows courses or universities that are experimenting with Rust an easy platform to auto test their students submissions.

Your Changes

I have added an auto test target for Rust on the markus-autotesting server. With an updated auto test schema (you may have to wipe the autotest_settings table for the rust target to show up on MarkUs after updating the server), MarkUs now supports the Rust language via cargo-test. For more details on implementation, see the autotesting PR.

Type of change (select all that apply):

• New feature (non-breaking change which adds functionality)
• Test update (change that modifies or updates tests only)

Including the changes to markus-autotesting. I believe this specific PR only modifies development tests.

Testing

I tested this PR in a couple ways. Using docker and a fresh DB, I ran:

• Ran rake db:autotest and ran tests manually on the autotest-rust project by selecting a submission and clicking on Run Tests (via MarkUs GUI).
• Manually creating an additional assignment, configuring a Rust test group, submitting a submission as a student and running tests as an instructor.

Questions and Comments (if applicable)

I wanted to avoid parsing "human-readable" output of cargo test. Machine readable output is nightly-only for cargo test (which means we would have to use an unstable Rust version). I had to use an alternative test runner cargo-nextest that had a more stable Machine Readable test output, and was compatible with cargo-test formatted tests.

I don't think it makes sense to have a test-script schema property (neither cargo-test nor cargo-nextest seems to keep information about the file names to my knowledge). I can add a "modules to run" option, which works better with the input for both runners.

Checklist

• I have performed a self-review of my own code.
• I have verified that the pre-commit.ci checks have passed.
• I have verified that the CI tests have passed.
• I have reviewed the test coverage changes reported on Coveralls.
• I have added tests for my changes. Taylor: Counting the db:autotest_run as tests. Seems to match the coverage of the other testers.
• I have updated the Changelog.md file.
• I have made changes to the documentation and linked to that pull request below.

Pull request to make documentation changes (if applicable)

MarkUsProject/Wiki#204

[1whatleytay]

This will copy folders too. Rust expects the default library file to be called src/lib.rs (within the src folder). This is configurable in Cargo.toml, but I thought I would provide an example that uses the default project structure for clarity 👍

[1whatleytay]

Same here, this recursive definition is designed to support the src folder in the rust submission.

[coveralls]

Pull Request Test Coverage Report for Build 8309673167

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 91.784%

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Totals
Change from base Build 8308241425:	0.0%
Covered Lines:	39178
Relevant Lines:	42063

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💛 - Coveralls