Update test case for ignored lined

Author: Sarthak Jaiswal

plugins/auto-sizes/includes/auto-sizes.php

@@ -49,7 +49,7 @@ function auto_sizes_update_image_attributes( $attr ): array {
  */
 function auto_sizes_update_content_img_tag( $html ): string {
 	if ( ! is_string( $html ) ) {
-		$html = ''; // @codeCoverageIgnore
+		$html = '';
 	}
 
 	$processor = new WP_HTML_Tag_Processor( $html );

plugins/auto-sizes/includes/improve-calculate-sizes.php

@@ -16,7 +16,7 @@
  */
 function auto_sizes_prime_attachment_caches( $content ): string {
 	if ( ! is_string( $content ) ) {
-		return ''; // @codeCoverageIgnore
+		return '';
 	}
 
 	$processor = new WP_HTML_Tag_Processor( $content );

plugins/auto-sizes/tests/test-auto-sizes.php

@@ -346,12 +346,6 @@ public function data_provider_for_auto_sizes_update_image_attributes(): array {
 					'sizes'   => 'auto, 100vw',
 				),
 			),
-
-			// Test when $attr is not an array.
-			array(
-				'attr'     => array(),
-				'expected' => array(),
-			),
 		);
 	}
 
@@ -366,4 +360,31 @@ public function data_provider_for_auto_sizes_update_image_attributes(): array {
 	public function test_auto_sizes_update_image_attributes( array $attr, array $expected ): void {
 		$this->assertSame( $expected, auto_sizes_update_image_attributes( $attr ) );
 	}
+
+	/**
+	 * @covers ::auto_sizes_update_content_img_tag
+	 */
+	public function test_auto_sizes_update_content_img_tag_non_string_input(): void {
+		/*
+			These tests are separate from the data provider approach because the function
+			auto_sizes_update_content_img_tag() expects a string as an argument. Passing a non-string
+			value would cause a TypeError. These tests ensure that the function behaves as expected
+			when it receives non-string inputs.
+		*/
+		$this->assertSame( '', auto_sizes_update_content_img_tag( array() ) );
+	}
+
+	/**
+	 * @covers ::auto_sizes_update_image_attributes
+	 */
+	public function test_auto_sizes_update_image_attributes_with_null_input(): void {
+		/*
+			This test is separate because the main test method uses a data provider
+			that expects the $attr parameter to be an array. Passing null directly
+			would cause a TypeError due to the type hint. By testing null separately,
+			we ensure that the function can handle null inputs gracefully without
+			modifying the type hint in the main test method.
+		*/
+		$this->assertSame( array(), auto_sizes_update_image_attributes( null ) );
+	}
 }