Refactor REST API request tests to use arrays

Replaced instances of WP_REST_Request with array structures in unit tests. This simplifies the test cases and ensures compatibility with the rest_filter_response_fields function.

tests/phpunit/tests/rest-api.php

@@ -408,7 +408,7 @@ public function test_options_request_not_options() {
 	public function test_rest_filter_response_fields_no_request_filter() {
 		$response = new WP_REST_Response();
 		$response->set_data( array( 'a' => true ) );
-		$request = new WP_REST_Request();
+		$request = array();
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$this->assertSame( array( 'a' => true ), $response->get_data() );
@@ -426,8 +426,9 @@ public function test_rest_filter_response_fields_single_field_filter() {
 				'c' => 2,
 			)
 		);
-		$request = new WP_REST_Request();
-		$request->set_param( '_fields', 'b' );
+		$request = array(
+			'_fields' => 'b',
+		);
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$this->assertSame( array( 'b' => 1 ), $response->get_data() );
@@ -521,9 +522,10 @@ public function test_rest_filter_response_fields_has_all_embeds() {
 				),
 			)
 		);
-		$request = new WP_REST_Request();
-		$request->set_param( '_fields', 'b' );
-		$request->set_param( '_embed', '1' );
+		$request = array(
+			'_fields' => 'b',
+			'_embed'  => '1',
+		);
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$expected = array(
@@ -597,9 +599,10 @@ public function test_rest_filter_response_fields_has_all_embeds_links_inside_eac
 			)
 		);
 
-		$request = new WP_REST_Request();
-		$request->set_param( '_fields', 'id,author' );
-		$request->set_param( '_embed', '1' );
+		$request = array(
+			'_fields' => 'id,author',
+			'_embed'  => '1',
+		);
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$expected = array(
@@ -653,9 +656,9 @@ public function test_rest_filter_response_fields_multi_field_filter() {
 				'f' => 5,
 			)
 		);
-
-		$request = new WP_REST_Request();
-		$request->set_param( '_fields', 'b,c,e' );
+		$request = array(
+			'_fields' => 'b,c,e',
+		);
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$this->assertSame(
@@ -685,8 +688,9 @@ public function test_rest_filter_response_fields_multi_field_filter_array() {
 				'f' => 5,
 			)
 		);
-		$request = new WP_REST_Request();
-		$request->set_param( '_fields', array( 'b', 'c', 'e' ) );
+		$request = array(
+			'_fields' => array( 'b', 'c', 'e' ),
+		);
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$this->assertSame(
@@ -723,9 +727,9 @@ public function test_rest_filter_response_fields_numeric_array() {
 				),
 			)
 		);
-
-		$request = new WP_REST_Request();
-		$request->set_param( '_fields', 'b,c' );
+		$request = array(
+			'_fields' => 'b,c',
+		);
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$this->assertSame(
@@ -769,9 +773,9 @@ public function test_rest_filter_response_fields_nested_field_filter() {
 				),
 			)
 		);
-
-		$request = new WP_REST_Request();
-		$request->set_param( '_fields', 'b.1,c,d.5' );
+		$request = array(
+			'_fields' => 'b.1,c,d.5',
+		);
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$this->assertSame(
@@ -810,9 +814,9 @@ public function test_rest_filter_response_fields_deeply_nested_field_filter() {
 				),
 			)
 		);
-
-		$request = new WP_REST_Request();
-		$request->set_param( '_fields', 'field.a.i,field.b.iv' );
+		$request = array(
+			'_fields' => 'field.a.i,field.b.iv',
+		);
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$this->assertSame(
@@ -846,9 +850,9 @@ public function test_rest_filter_response_fields_top_level_key() {
 				),
 			)
 		);
-
-		$request = new WP_REST_Request();
-		$request->set_param( '_fields', 'meta' );
+		$request = array(
+			'_fields' => 'meta',
+		);
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$this->assertSame(
@@ -878,9 +882,9 @@ public function test_rest_filter_response_fields_child_after_parent() {
 				),
 			)
 		);
-
-		$request = new WP_REST_Request();
-		$request->set_param( '_fields', 'meta,meta.key1' );
+		$request = array(
+			'_fields' => 'meta,meta.key1',
+		);
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$this->assertSame(
@@ -910,9 +914,9 @@ public function test_rest_filter_response_fields_include_all_specified_siblings(
 				),
 			)
 		);
-
-		$request = new WP_REST_Request();
-		$request->set_param( '_fields', 'meta.key1,meta.key2' );
+		$request = array(
+			'_fields' => 'meta.key1,meta.key2',
+		);
 
 		$response = rest_filter_response_fields( $response, null, $request );
 		$this->assertSame(