diff --git a/tests/phpunit/tests/blocks/insertHookedBlocks.php b/tests/phpunit/tests/blocks/insertHookedBlocks.php
index 79d404b1454db..69100d6cc0eb2 100644
--- a/tests/phpunit/tests/blocks/insertHookedBlocks.php
+++ b/tests/phpunit/tests/blocks/insertHookedBlocks.php
@@ -20,9 +20,17 @@ class Tests_Blocks_InsertHookedBlocks extends WP_UnitTestCase {
 		'innerContent' => array(),
 	);
 
+	const OTHER_HOOKED_BLOCK_TYPE = 'tests/other-hooked-block';
+	const OTHER_HOOKED_BLOCK      = array(
+		'blockName'    => self::OTHER_HOOKED_BLOCK_TYPE,
+		'attrs'        => array(),
+		'innerContent' => array(),
+	);
+
 	const HOOKED_BLOCKS = array(
 		self::ANCHOR_BLOCK_TYPE => array(
-			'after' => array( self::HOOKED_BLOCK_TYPE ),
+			'after'  => array( self::HOOKED_BLOCK_TYPE ),
+			'before' => array( self::OTHER_HOOKED_BLOCK_TYPE ),
 		),
 	);
 
@@ -40,4 +48,44 @@ public function test_insert_hooked_blocks_adds_metadata() {
 		$this->assertSame( array( self::HOOKED_BLOCK_TYPE ), $anchor_block['attrs']['metadata']['ignoredHookedBlocks'] );
 		$this->assertSame( '<!-- wp:' . self::HOOKED_BLOCK_TYPE . ' /-->', $actual );
 	}
+
+	/**
+	 * @ticket 60126
+	 *
+	 * @covers ::insert_hooked_blocks
+	 */
+	public function test_insert_hooked_blocks_if_block_is_already_hooked() {
+		$anchor_block = array(
+			'blockName' => 'tests/anchor-block',
+			'attrs'     => array(
+				'metadata' => array(
+					'ignoredHookedBlocks' => array( self::HOOKED_BLOCK_TYPE ),
+				),
+			),
+		);
+
+		$actual = insert_hooked_blocks( $anchor_block, 'after', self::HOOKED_BLOCKS, array() );
+		$this->assertSame( array( self::HOOKED_BLOCK_TYPE ), $anchor_block['attrs']['metadata']['ignoredHookedBlocks'] );
+		$this->assertSame( '', $actual );
+	}
+
+	/**
+	 * @ticket 60126
+	 *
+	 * @covers ::insert_hooked_blocks
+	 */
+	public function test_insert_hooked_blocks_adds_to_ignored_hooked_blocks() {
+		$anchor_block = array(
+			'blockName' => 'tests/anchor-block',
+			'attrs'     => array(
+				'metadata' => array(
+					'ignoredHookedBlocks' => array( self::HOOKED_BLOCK_TYPE ),
+				),
+			),
+		);
+
+		$actual = insert_hooked_blocks( $anchor_block, 'before', self::HOOKED_BLOCKS, array() );
+		$this->assertSame( array( self::HOOKED_BLOCK_TYPE, self::OTHER_HOOKED_BLOCK_TYPE ), $anchor_block['attrs']['metadata']['ignoredHookedBlocks'] );
+		$this->assertSame( '<!-- wp:' . self::OTHER_HOOKED_BLOCK_TYPE . ' /-->', $actual );
+	}
 }