Build/Test tools: In Travis, skip some tests when not on trunk.

This skips time sensitive tests (copyright year and PHP/MySQL version requirements) when tests are run on branches on Travis.

Props netweb, jorbin

Fixes #39486


git-svn-id: https://develop.svn.wordpress.org/trunk@40241 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/includes/testcase.php

@@ -176,6 +176,27 @@ class WP_UnitTestCase extends PHPUnit_Framework_TestCase {
 		self::flush_cache();
 	}
 
+	/**
+	 * Allow tests to be skipped on some automated runs
+	 *
+	 * For test runs on Travis for something other than trunk/master 
+	 * we want to skip tests that only need to run for master.
+	 */
+	public function skipOnAutomatedBranches() {
+		// gentenv can be disabled
+		if ( ! function_exists( 'getenv' ) ) {
+			return false;
+		}
+
+		// https://docs.travis-ci.com/user/environment-variables/#Default-Environment-Variables
+		$travis_branch       = getenv( 'TRAVIS_BRANCH' );
+		$travis_pull_request = getenv( 'TRAVIS_PULL_REQUEST' );
+
+		if ( false !== $travis_pull_request && 'master' !== $travis_branch ) {
+			$this->markTestSkipped( 'For automated test runs, this test is only run on trunk/master' );
+		}
+	}
+
 	/**
 	 * Unregister existing post types and register defaults.
 	 *

tests/phpunit/tests/basic.php

@@ -8,6 +8,9 @@
 class Tests_Basic extends WP_UnitTestCase {
 
 	function test_license() {
+		// This test is designed to only run on trunk/master
+		$this->skipOnAutomatedBranches();
+
 		$license = file_get_contents( ABSPATH . 'license.txt' );
 		preg_match( '#Copyright 2011-(\d+) by the contributors#', $license, $matches );
 		$this_year = date( 'Y' );

tests/phpunit/tests/external-http/basic.php

@@ -5,6 +5,9 @@
 class Tests_External_HTTP_Basic extends WP_UnitTestCase {
 
 	function test_readme() {
+		// This test is designed to only run on trunk/master
+		$this->skipOnAutomatedBranches();
+
 		$readme = file_get_contents( ABSPATH . 'readme.html' );
 
 		preg_match( '#Recommendations.*PHP</a> version <strong>([0-9.]*)#s', $readme, $matches );