From af5df424fc15132d552443f626cd801ce74cc45d Mon Sep 17 00:00:00 2001
From: RazeSoldier <razesoldier@outlook.com>
Date: Sat, 15 Jun 2019 14:35:18 +0800
Subject: [PATCH] Skip ::testT69870() under Windows system

Anonymous pipe under Windows does not support asynchronous read and write[1],
and the default buffer is too small (~4K), the test will definitely block it.

Before T69870, anonymous pipe for Windows can no longer hold more than 4K of data.

[1] https://docs.microsoft.com/en-us/windows/desktop/ipc/anonymous-pipe-operations

Bug: T209159
Change-Id: Ie9de36b1e6b68db95c35a0044c5b0d86c0050d33
---
 .../includes/GlobalFunctions/wfShellExecTest.php    | 13 ++++++++-----
 tests/phpunit/includes/shell/CommandTest.php        | 13 ++++++++-----
 2 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/tests/phpunit/includes/GlobalFunctions/wfShellExecTest.php b/tests/phpunit/includes/GlobalFunctions/wfShellExecTest.php
index 6279cf6eee..68bb1e9689 100644
--- a/tests/phpunit/includes/GlobalFunctions/wfShellExecTest.php
+++ b/tests/phpunit/includes/GlobalFunctions/wfShellExecTest.php
@@ -6,14 +6,17 @@
  */
 class WfShellExecTest extends MediaWikiTestCase {
 	public function testT69870() {
-		$command = wfIsWindows()
-			// 333 = 331 + CRLF
-			? ( 'for /l %i in (1, 1, 1001) do @echo ' . str_repeat( '*', 331 ) )
-			: 'printf "%-333333s" "*"';
+		if ( wfIsWindows() ) {
+			// T209159: Anonymous pipe under Windows does not support asynchronous read and write,
+			// and the default buffer is too small (~4K), it is easy to be blocked.
+			$this->markTestSkipped(
+				'T209159: Anonymous pipe under Windows cannot withstand such a large amount of data'
+			);
+		}
 
 		// Test several times because it involves a race condition that may randomly succeed or fail
 		for ( $i = 0; $i < 10; $i++ ) {
-			$output = wfShellExec( $command );
+			$output = wfShellExec( 'printf "%-333333s" "*"' );
 			$this->assertEquals( 333333, strlen( $output ) );
 		}
 	}
diff --git a/tests/phpunit/includes/shell/CommandTest.php b/tests/phpunit/includes/shell/CommandTest.php
index 2e03163885..c5e8e897ab 100644
--- a/tests/phpunit/includes/shell/CommandTest.php
+++ b/tests/phpunit/includes/shell/CommandTest.php
@@ -119,15 +119,18 @@ class CommandTest extends PHPUnit\Framework\TestCase {
 	}
 
 	public function testT69870() {
-		$commandLine = wfIsWindows()
-			// 333 = 331 + CRLF
-			? ( 'for /l %i in (1, 1, 1001) do @echo ' . str_repeat( '*', 331 ) )
-			: 'printf "%-333333s" "*"';
+		if ( wfIsWindows() ) {
+			// T209159: Anonymous pipe under Windows does not support asynchronous read and write,
+			// and the default buffer is too small (~4K), it is easy to be blocked.
+			$this->markTestSkipped(
+				'T209159: Anonymous pipe under Windows cannot withstand such a large amount of data'
+			);
+		}
 
 		// Test several times because it involves a race condition that may randomly succeed or fail
 		for ( $i = 0; $i < 10; $i++ ) {
 			$command = new Command();
-			$output = $command->unsafeParams( $commandLine )
+			$output = $command->unsafeParams( 'printf "%-333333s" "*"' )
 				->execute()
 				->getStdout();
 			$this->assertEquals( 333333, strlen( $output ) );
-- 
2.20.1