Tests: Move tests infrastructure, set up travis

Consolidates the composer files so we can run install once in travis.

plugins/wporg-5ftf/composer.json

@@ -1,32 +0,0 @@
-{
-	"name"        : "wordpress/five-for-the-future",
-	"description" : "Five for the Future plugin",
-	"license"     : "GPL-2.0-or-later",
-
-	"authors" : [
-		{
-			"name"  : "WordPress",
-			"email" : "support@wordcamp.org"
-		}
-	],
-
-	"config" : {
-		"_comment": "Work around `test:watch` timeout, see https://github.com/spatie/phpunit-watcher/issues/63#issuecomment-545633709",
-		"process-timeout": 0
-	},
-
-	"require" : {},
-
-	"_comment" : "PHPUnit 7.x is the latest version that's compatible with Core, see https://core.trac.wordpress.org/ticket/46149",
-	"require-dev" : {
-		"phpunit/phpunit"        : "^7",
-		"spatie/phpunit-watcher" : "^1.12"
-	},
-
-	"scripts" : {
-		"test" : "vendor/bin/phpunit",
-
-		"_comment"   : "Input won't work when running this via `composer test:watch`. If you want to use PHPUnit Watcher's interactive options then you'll need to call it directly in your terminal. See https://github.com/composer/composer/issues/5856",
-		"test:watch" : "vendor/bin/phpunit-watcher watch"
-	}
-}

plugins/wporg-5ftf/phpunit-watcher.yml.dist

@@ -1,13 +0,0 @@
-watch:
-  directories:
-    # By default only the `tests/` folder is watched, but the empty value below represents the current directory,
-    # so that tests will also re-run when the files-under-test are changed.
-    -
-  fileMask: '*.php'
-
-notifications:
-  passingTests: false
-  failingTests: false
-
-phpunit:
-  binaryPath: vendor/bin/phpunit

plugins/wporg-5ftf/phpunit.xml.dist

@@ -1,17 +0,0 @@
-<phpunit
-	bootstrap="tests/bootstrap.php"
-	backupGlobals="false"
-	colors="true"
-	convertErrorsToExceptions="true"
-	convertNoticesToExceptions="true"
-	convertWarningsToExceptions="true"
-	>
-
-	<testsuites>
-		<testsuite name="Five for the Future plugin">
-			<directory prefix="test-" suffix=".php">
-				./tests/
-			</directory>
-		</testsuite>
-	</testsuites>
-</phpunit>

plugins/wporg-5ftf/tests/bootstrap.php

@@ -1,29 +1,29 @@
 <?php
+/**
+ * PHPUnit bootstrap file
+ */
 
-namespace WordPressDotOrg\FiveForTheFuture\Tests;
+$_tests_dir = getenv( 'WP_TESTS_DIR' );
 
-if ( 'cli' !== php_sapi_name() ) {
-	return;
+if ( ! $_tests_dir ) {
+	$_tests_dir = rtrim( sys_get_temp_dir(), '/\\' ) . '/wordpress-tests-lib';
 }
 
-
-define( 'WP_PLUGIN_DIR', dirname( dirname( __DIR__ ) ) );
-
-
-$core_tests_directory = getenv( 'WP_TESTS_DIR' );
-
-if ( ! $core_tests_directory ) {
-	echo "\nPlease set the WP_TESTS_DIR environment variable to the folder where WordPress' PHPUnit tests live --";
-	echo "\ne.g., export WP_TESTS_DIR=/srv/www/wordpress-develop/tests/phpunit\n";
-
-	return;
+if ( ! file_exists( $_tests_dir . '/includes/functions.php' ) ) {
+	echo "Could not find $_tests_dir/includes/functions.php, have you run bin/install-wp-tests.sh ?" . PHP_EOL; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+	exit( 1 );
 }
 
-require_once $core_tests_directory . '/includes/functions.php';
-require_once dirname( dirname( $core_tests_directory ) ) . '/build/wp-admin/includes/plugin.php';
+// Give access to tests_add_filter() function.
+require_once $_tests_dir . '/includes/functions.php';
 
-tests_add_filter( 'muplugins_loaded', function() {
-	require_once dirname( __DIR__ )  . '/index.php';
-} );
+/**
+ * Manually load the plugin being tested.
+ */
+function _manually_load_plugin() {
+	require dirname( dirname( __FILE__ ) ) . '/index.php';
+}
+tests_add_filter( 'muplugins_loaded', '_manually_load_plugin' );
 
-require_once $core_tests_directory . '/includes/bootstrap.php';
+// Start up the WP testing environment.
+require $_tests_dir . '/includes/bootstrap.php';