1 files changed, 23 insertions, 0 deletions
diff --git a/tests/phpunit/includes/GlobalFunctions/WfShellExecTest.php b/tests/phpunit/includes/GlobalFunctions/WfShellExecTest.php
new file mode 100644
index 000000000000..c7d91e07f4b9
--- /dev/null
+++ b/tests/phpunit/includes/GlobalFunctions/WfShellExecTest.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * @group GlobalFunctions
+ * @covers ::wfShellExec
+ */
+class WfShellExecTest extends MediaWikiIntegrationTestCase {
+	public function testT69870() {
+		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( 'printf "%-333333s" "*"' );
+			$this->assertEquals( 333333, strlen( $output ) );
+		}
+	}
+}