diff --git a/tests/unit/CoreCodeTest.php b/tests/unit/CoreCodeTest.php
new file mode 100644
index 00000000..3666fec8
--- /dev/null
+++ b/tests/unit/CoreCodeTest.php
@@ -0,0 +1,264 @@
+<?php
+
+namespace WPGraphQL\ContentBlocks\Unit;
+
+final class CoreCodeTest extends PluginTestCase {
+	/**
+	 * The ID of the post created for the test.
+	 *
+	 * @var int
+	 */
+	public $post_id;
+
+	/**
+	 * Set up the test environment.
+	 */
+	public function setUp(): void {
+		parent::setUp();
+
+		$this->post_id = wp_insert_post(
+			[
+				'post_title'   => 'Post with Code Block',
+				'post_content' => '',
+				'post_status'  => 'publish',
+			]
+		);
+
+		\WPGraphQL::clear_schema();
+	}
+
+	/**
+	 * Tear down the test environment.
+	 */
+	public function tearDown(): void {
+		parent::tearDown();
+
+		wp_delete_post( $this->post_id, true );
+
+		\WPGraphQL::clear_schema();
+	}
+
+	/**
+	 * Provide the GraphQL query for testing.
+	 *
+	 * @return string The GraphQL query.
+	 */
+	public function query(): string {
+		return '
+            fragment CoreCodeBlockFragment on CoreCode {
+                attributes {
+                    align
+                    anchor
+                    backgroundColor
+                    borderColor
+                    className
+                    content
+                    cssClassName
+                    fontFamily
+                    fontSize
+                    gradient
+                    lock
+                    metadata
+                    style
+                    textColor
+                }
+            }
+            query Post( $id: ID! ) {
+                post(id: $id, idType: DATABASE_ID) {
+                    databaseId
+                    editorBlocks {
+                        name
+                        ...CoreCodeBlockFragment
+                    }
+                }
+            }
+        ';
+	}
+
+	/**
+	 * Test the retrieval of core/code block attributes.
+	 *
+	 * Attributes covered:
+	 * - content
+	 * - cssClassName
+	 * - backgroundColor
+	 * - textColor
+	 * - fontSize
+	 * - fontFamily
+	 *
+	 * @return void
+	 */
+	public function test_retrieve_core_code_attributes() {
+		$block_content = '
+            <!-- wp:code {"backgroundColor":"pale-cyan-blue","textColor":"vivid-red","fontSize":"large","fontFamily":"monospace"} -->
+            <pre class="wp-block-code has-vivid-red-color has-pale-cyan-blue-background-color has-text-color has-background has-large-font-size has-monospace-font-family"><code>function hello_world() {
+    console.log("Hello, World!");
+}</code></pre>
+            <!-- /wp:code -->
+        ';
+
+		wp_update_post(
+			[
+				'ID'           => $this->post_id,
+				'post_content' => $block_content,
+			]
+		);
+
+		$actual = graphql(
+			[
+				'query'     => $this->query(),
+				'variables' => [ 'id' => $this->post_id ],
+			]
+		);
+
+		$block      = $actual['data']['post']['editorBlocks'][0];
+		$attributes = $block['attributes'];
+
+		$this->assertEquals( 'core/code', $block['name'] );
+		$this->assertEquals(
+			[
+				'align'           => null,
+				'anchor'          => null,
+				'backgroundColor' => 'pale-cyan-blue',
+				'borderColor'     => null,
+				'className'       => null,
+				'content'         => "function hello_world() {\n    console.log(\"Hello, World!\");\n}",
+				'cssClassName'    => 'wp-block-code has-vivid-red-color has-pale-cyan-blue-background-color has-text-color has-background has-large-font-size has-monospace-font-family',
+				'fontFamily'      => 'monospace',
+				'fontSize'        => 'large',
+				'gradient'        => null,
+				'lock'            => null,
+				'metadata'        => null,
+				'style'           => null,
+				'textColor'       => 'vivid-red',
+			],
+			$attributes
+		);
+	}
+
+	/**
+	 * Test retrieval of core/code block with custom styles and border color.
+	 *
+	 * Attributes covered:
+	 * - borderColor
+	 * - style
+	 * - className
+	 * - align
+	 *
+	 * @return void
+	 */
+	public function test_retrieve_core_code_with_custom_styles() {
+		$block_content = '
+            <!-- wp:code {"borderColor":"vivid-cyan-blue","className":"custom-class","align":"wide","style":{"border":{"width":"2px"},"spacing":{"padding":{"top":"20px","right":"20px","bottom":"20px","left":"20px"}}}} -->
+            <pre class="wp-block-code alignwide custom-class has-border-color has-vivid-cyan-blue-border-color" style="border-width:2px;padding-top:20px;padding-right:20px;padding-bottom:20px;padding-left:20px"><code>const greeting = "Hello, styled code!";</code></pre>
+            <!-- /wp:code -->
+        ';
+
+		wp_update_post(
+			[
+				'ID'           => $this->post_id,
+				'post_content' => $block_content,
+			]
+		);
+
+		$actual = graphql(
+			[
+				'query'     => $this->query(),
+				'variables' => [ 'id' => $this->post_id ],
+			]
+		);
+
+		$block      = $actual['data']['post']['editorBlocks'][0];
+		$attributes = $block['attributes'];
+
+		$this->assertEquals(
+			[
+				'align'           => 'wide',
+				'anchor'          => null,
+				'backgroundColor' => null,
+				'borderColor'     => 'vivid-cyan-blue',
+				'className'       => 'custom-class',
+				'content'         => 'const greeting = "Hello, styled code!";',
+				'cssClassName'    => 'wp-block-code alignwide custom-class has-border-color has-vivid-cyan-blue-border-color',
+				'fontFamily'      => null,
+				'fontSize'        => null,
+				'gradient'        => null,
+				'lock'            => null,
+				'metadata'        => null,
+				'style'           => wp_json_encode(
+					[
+						'border'  => [
+							'width' => '2px',
+						],
+						'spacing' => [
+							'padding' => [
+								'top'    => '20px',
+								'right'  => '20px',
+								'bottom' => '20px',
+								'left'   => '20px',
+							],
+						],
+					]
+				),
+				'textColor'       => null,
+			],
+			$attributes
+		);
+	}
+
+	/**
+	 * Test retrieval of core/code block with gradient and additional attributes.
+	 *
+	 * Attributes covered:
+	 * - gradient
+	 * - anchor
+	 * - lock
+	 * - metadata
+	 *
+	 * @return void
+	 */
+	public function test_retrieve_core_code_with_gradient_and_additional_attributes() {
+		$block_content = '
+            <!-- wp:code {"anchor":"test-anchor","gradient":"vivid-cyan-blue-to-vivid-purple","lock":{"move":true,"remove":true},"metadata":{"someKey":"someValue"}} -->
+            <pre id="test-anchor" class="wp-block-code has-vivid-cyan-blue-to-vivid-purple-gradient-background"><code>console.log("Gradient and locked code block");</code></pre>
+            <!-- /wp:code -->
+        ';
+
+		wp_update_post(
+			[
+				'ID'           => $this->post_id,
+				'post_content' => $block_content,
+			]
+		);
+
+		$actual = graphql(
+			[
+				'query'     => $this->query(),
+				'variables' => [ 'id' => $this->post_id ],
+			]
+		);
+
+		$block      = $actual['data']['post']['editorBlocks'][0];
+		$attributes = $block['attributes'];
+
+		$this->assertEquals(
+			[
+				'align'           => null,
+				'anchor'          => 'test-anchor',
+				'backgroundColor' => null,
+				'borderColor'     => null,
+				'className'       => null,
+				'content'         => 'console.log("Gradient and locked code block");',
+				'cssClassName'    => 'wp-block-code has-vivid-cyan-blue-to-vivid-purple-gradient-background',
+				'fontFamily'      => null,
+				'fontSize'        => null,
+				'gradient'        => 'vivid-cyan-blue-to-vivid-purple',
+				'lock'            => '{"move":true,"remove":true}',
+				'metadata'        => '{"someKey":"someValue"}',
+				'style'           => null,
+				'textColor'       => null,
+			],
+			$attributes
+		);
+	}
+}