Build/Test Tools: Use Git when fetching the WordPress Importer for use in tests.

This switches to using Git in the local Docker environment install script to check out a copy of the WordPress Importer plugin for use in unit tests.

Previously, SVN was used and the commands were not correctly run within the Docker container. The container does not actually have SVN installed, and the script was only working when the machine running the command had SVN present.

Merges [51179] to the 5.3 branch.
Reviewed by desrosj.

Props czapla, alexstine, jnylen0, francina, desrosj.
See #52909.
See #62280.

git-svn-id: https://develop.svn.wordpress.org/branches/5.3@59601 602fd350-edb4-49c9-b593-d223f7449a82

Author: swissspidy

.env

@@ -70,10 +70,3 @@ LOCAL_SCRIPT_DEBUG=true
 
 # The URL to use when running e2e tests.
 WP_BASE_URL=http://localhost:${LOCAL_PORT}
-
-##
-# The revision number of the WordPress Importer plugin to use when running unit tests.
-#
-# This should be an SVN revision number from the official plugin repository on wordpress.org.
-##
-WP_IMPORTER_REVISION=2387243

tools/local-env/scripts/install.js

@@ -51,7 +51,8 @@ function wp_cli( cmd ) {
  * Downloads the WordPress Importer plugin for use in tests.
  */
 function install_wp_importer() {
-	const test_plugin_directory = 'tests/phpunit/data/plugins/wordpress-importer';
+	const testPluginDirectory = 'tests/phpunit/data/plugins/wordpress-importer';
 
-	execSync( `docker compose exec -T php rm -rf ${test_plugin_directory} && svn checkout -r ${process.env.WP_IMPORTER_REVISION} https://plugins.svn.wordpress.org/wordpress-importer/trunk/ ${test_plugin_directory}`, { stdio: 'inherit' } );
+	execSync( `docker compose exec -T php rm -rf ${testPluginDirectory}`, { stdio: 'inherit' } );
+	execSync( `docker compose exec -T php git clone https://github.com/WordPress/wordpress-importer.git ${testPluginDirectory} --depth=1`, { stdio: 'inherit' } );
 }