feat(ses-ava): import test from @endo/ses-ava/prepare-endo.js

[erights]

closes: #XXXX refs: #XXXX

Description

At https://github.com/Agoric/agoric-sdk/pull/9026#discussion_r1511360711 @turadg suggested that rather than scatter redundant prepare-test-env-ava.js test files in each test directory, that @endo/ses-ava should just export a test that most ses-ava users can just use directly. This PR attempts to provide that.

To do so, I had to change the layering so that the new @endo/ses-ava/prepare-test-env-ava.js can do the endo initialization that most clients expect, which includes setting up both ses and @endo/eventual-send with various options set up appropriately for debugging. Thus, for all those packages that @endo/ses-ava now depends on, directly or indirectly, I changed them to use 'ava' rather than @endo/ses-ava to avoid circular build dependencies.

I also had to move @endo/ses-ava's dependency on 'ava' from "devDependencies": "dependencies":. This creates a hazard that bundlers might try to bundle 'ava', which would be bad. To avoid that, all packages using @endo/ses-ava must depend on it as a "devDependencies":, which they should do anyway.

From a pair debugging session with @Chris-Hibbert just now, I think the options set up by this new @endo/ses-ava/prepare-test-env-ava.js are adequate for him to get the stack traces he needed.

Security Considerations

none

Scaling Considerations

none

Documentation Considerations

easier to document how to set up tests in a test directory.

Testing Considerations

The point. This should both make it easier to set up a test directory, and to get more options set right to support debugging.

Compatibility Considerations

This PR mades a coordinated change between various endo packages, without trying to tolerate version slippage among them. This is all in preparation for a new endo release, and effects on tests, so should be fine. Should have no compat impact on any existing clients of anything in endo.

Upgrade Considerations

none

Nothing breaking. NEWSworthy.

• ~[ ] Includes *BREAKING*: in the commit message with migration instructions for any breaking change.~
• [x] Updates NEWS.md for user-facing changes.

[Chris-Hibbert]

I've looked at the changes. I approve of the goal, but I leave it to others to approve the PR.

[erights]

At https://github.com/Agoric/agoric-sdk/pull/9026#discussion_r1511357998 @turadg suggested removing the unneeded lint suppression. With this change, I was able to remove all unneeded

// eslint-disable-next-line import/order

Good riddance! Done.

[erights]

@turadg , I acted on all suggestions as well as possible and got @kriskowal 's approval. PTAL.

Thanks for the great suggestions! It really is much better now.

[gibson042]

We had planned,

• ses-ava should not mix exports and side-effects #1467

but I think this is a good solution to the side-effect surprises and boilerplate. @gibson042 should this PR close that issue?

Yes, I would say so. This is great!