This is my note for trying to run https://github.com/WordPress/phpunit-test-runner on AMIMOTO as local

Prepare

Launch AMIMOTO AMI at first.

Prepare source code

Download and prepare the phpunit-test-runner source codes.

$ git clone https://github.com/WordPress/phpunit-test-runner.git
$ cd phpunit-test-runner

You need to configure some environment variables.
There are many variable to run test in CI or reports the test result.
So, I wrote some variables just running for the test .

$ cp .env.default .env
$ vim .env
# Path to the directory where files can be prepared before being delivered to the environment.
export WPT_PREPARE_DIR=/tmp/wp-test-runner

# Path to the directory where the WordPress develop checkout can be placed and tests can be run.
# When running tests in the same environment, set WPT_TEST_DIR to WPT_PREPARE_DIR
export WPT_TEST_DIR=/tmp/wp-test-runner

# Credentials for a database that can be written to and reset.
# WARNING!!! This database will be destroyed between tests. Only use safe database credentials.
export WPT_DB_NAME={InstanceID}
export WPT_DB_USER=wp_b8cm5ffbihc92
export WPT_DB_PASSWORD='XXXXXXXXx'
export WPT_DB_HOST=localhost

The parameters like WPT_DB_*** can check by following commands.

$ sudo cat /opt/local/{InstanceID}.json | jq ".wordpress.db"
{
  "db_name": "{InstanceID}",
  "user_name": "wp_b8cm5ffbihc92",
  "password": "XXXXXXXXx",
  "host": "localhost"
}

And finally, load your variables into scope.

$ source .env

Setup

Download test WordPress and set up by php prepare.php commands.

$ php prepare.php
...
cd '/tmp/wp-test-runner/tests/phpunit/data/plugins/'; unzip wordpress-importer.zip; rm wordpress-importer.zip
Archive:  wordpress-importer.zip
   creating: wordpress-importer/
   creating: wordpress-importer/languages/
  inflating: wordpress-importer/languages/wordpress-importer.pot  
  inflating: wordpress-importer/parsers.php  
  inflating: wordpress-importer/readme.txt  
  inflating: wordpress-importer/wordpress-importer.php  
Replacing variables in wp-tests-config.php
Success: Prepared environment.

All source code will be deployed at WPT_PREPARE_DIR.

If you have some trouble, you can retry after run rm -rf ${WPT_PREPARE_DIR}

Running unit test

After run php prepare.php, you can run PHPUnit by php test.php

$ php test.php
Environment variables pass checks.
cd '/tmp/wp-test-runner'; php phpunit.phar
sh: gs: command not found
sh: convert: command not found
sh: gs: command not found
sh: convert: command not found
Installing...
Running as single site... To run multisite, use -c tests/phpunit/multisite.xml
Not running ajax tests. To execute these, use --group ajax.
Not running ms-files tests. To execute these, use --group ms-files.
Not running external-http tests. To execute these, use --group external-http.
PHPUnit 5.7.21 by Sebastian Bergmann and contributors.

.............................................................   61 / 8046 (  0%)
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.......

But unfortunately, the normal AMIMOTO has an error.

1) Tests_oEmbed_HTTP_Headers::test_rest_pre_serve_request_headers
PHPUnit_Framework_Exception: sh: gs: command not found
sh: convert: command not found
sh: gs: command not found
sh: convert: command not found

You should run sudo yum install ImageMagick -y and retry to run php test.php.

$ sudo yum install ImageMagick -y
$ php test.php
...
............................................................. 6893 / 8046 ( 85%)
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........................................SSSSSSSSSSSSSSS       8046 / 8046 (100%)

You should really fix these slow tests (>150ms)...
 1. 673ms to run Tests_WP_Site_Icon:test_insert_cropped_attachment
 2. 556ms to run WP_Test_REST_Users_Controller:test_get_items_pagination_headers
 3. 407ms to run Tests_Media:test_wp_calculate_image_srcset_no_date_uploads
 4. 403ms to run Tests_Media:test_wp_calculate_image_srcset_no_width
 5. 377ms to run WP_Test_REST_Users_Controller:test_get_items_per_page
 6. 344ms to run Tests_WP_Site_Icon:test_create_attachment_object
 7. 317ms to run WP_Test_REST_Posts_Controller:test_get_items_pagination_headers
 8. 259ms to run WP_Test_REST_Users_Controller:test_get_additional_field_registration
 9. 245ms to run WP_Test_REST_Users_Controller:test_get_items_page
 10. 236ms to run Tests_Import_Import:test_double_import
...and there are 19 more above your threshold hidden from view

Time: 1.35 minutes, Memory: 442.00MB

OK, but incomplete, skipped, or risky tests!
Tests: 8046, Assertions: 34440, Skipped: 32, Risky: 8.

Succeeded!

Cleanup

Just run this command.

$ php cleanup.php
Environment variables pass checks.
rm -rf '/tmp/wp-test-runner/.git'
rm -r '/tmp/wp-test-runner'