Instructions for running unit tests and generating coverage reports are out of date

[alxndrsn]

https://github.com/pouchdb/pouchdb/blob/master/TESTING.md#unit-tests references build-as-modular-es5, which no longer exists.

[alxndrsn]

This also affects the documentation for generating coverage reports.

[alxndrsn]

Fuller explanation ref. unit tests:

https://github.com/pouchdb/pouchdb/blob/master/TESTING.md#test-coverage says to run $ npm run test-coverage. However, doing that locally gives different results to Travis - Travis expects 100% coverage, but locally on master I get:

=============================== Coverage summary ===============================
Statements   : 87.35% ( 5053/5785 ), 170 ignored
Branches     : 82.71% ( 2502/3025 ), 149 ignored
Functions    : 85.23% ( 935/1097 ), 22 ignored
Lines        : 87.34% ( 5048/5780 )
================================================================================

In the TESTING.md linked above, there's a hint that you need to run a script before running the coverage report:

Again, this uses npm run build-as-modular-es5 in order to fully test the codebase as a non-bundle. See build-as-modular-es5.sh for details.

However, I think this script was removed last year in this commit:

 commit 37fe1bc5a482b230fe9aa810a5419cbcde06da40
 Author: Nolan Lawson <nolan.lawson@gmail.com>
 Date:   Fri May 20 15:01:15 2016 -0700

     (#5128) - split PouchDB into a monorepo with separate packages

[alxndrsn]

To generate a coverage report locally:

1. SERVER="pouchdb-server" TRAVIS_REPO_SLUG="pouchdb/pouchdb" PLUGINS=pouchdb-find COVERAGE=1 npm run report-coverage

This will try (and fail) to upload the generated report to coveralls, returning a non-zero status code on the console. Ignore this, and then:

2. open ./coverage/lcov-report/index.html

With thanks to @willholley.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[alxndrsn]

@Stale please don't close