diff --git a/.changeset/silver-actors-retire.md b/.changeset/silver-actors-retire.md
new file mode 100644
index 00000000..6377130a
--- /dev/null
+++ b/.changeset/silver-actors-retire.md
@@ -0,0 +1,5 @@
+---
+"@wpengine/wp-graphql-content-blocks": patch
+---
+
+tests: Add tests for CoreCode Block
diff --git a/tests/unit/CoreCodeTest.php b/tests/unit/CoreCodeTest.php
new file mode 100644
index 00000000..6b6165c2
--- /dev/null
+++ b/tests/unit/CoreCodeTest.php
@@ -0,0 +1,387 @@
+<?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 {
+					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 {
+						apiVersion
+						blockEditorCategoryName
+						clientId
+						cssClassNames
+						innerBlocks {
+							name
+						}
+						isDynamic
+						name
+						parentClientId
+						renderedHtml
+						... on BlockWithSupportsAnchor {
+							anchor
+						}
+						...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,
+			]
+		);
+
+		$query     = $this->query();
+		$variables = [
+			'id' => $this->post_id,
+		];
+
+		$actual = graphql( compact( 'query', 'variables' ) );
+
+		$this->assertArrayNotHasKey( 'errors', $actual, 'There should not be any errors' );
+		$this->assertArrayHasKey( 'data', $actual, 'The data key should be present' );
+		$this->assertArrayHasKey( 'post', $actual['data'], 'The post key should be present' );
+
+		$this->assertEquals( $this->post_id, $actual['data']['post']['databaseId'], 'The post ID should match' );
+
+		$this->assertEquals( 1, count( $actual['data']['post']['editorBlocks'] ) );
+
+		$block = $actual['data']['post']['editorBlocks'][0];
+
+		$this->assertNotEmpty( $block['apiVersion'], 'The apiVersion should be present' );
+		$this->assertEquals( 'text', $block['blockEditorCategoryName'], 'The blockEditorCategoryName should be text' );
+		$this->assertNotEmpty( $block['clientId'], 'The clientId should be present' );
+
+		$this->assertEmpty( $block['innerBlocks'], 'There should be no inner blocks' );
+		$this->assertEquals( 'core/code', $block['name'], 'The block name should be core/code' );
+		$this->assertEmpty( $block['parentClientId'], 'There should be no parentClientId' );
+		$this->assertNotEmpty( $block['renderedHtml'], 'The renderedHtml should be present' );
+
+		$attributes = $block['attributes'];
+		$this->assertEquals(
+			[
+				'anchor'          => null,
+				'backgroundColor' => 'pale-cyan-blue', // previously untested
+				'borderColor'     => null,
+				'className'       => null,
+				'content'         => "function hello_world() {\n\t\t\t\tconsole.log(\"Hello, World!\");\n\t\t\t}", // previously untested
+				'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', // previously untested
+				'fontFamily'      => 'monospace', // previously untested
+				'fontSize'        => 'large', // previously untested
+				'gradient'        => null,
+				'lock'            => null,
+				'style'           => null,
+				'textColor'       => 'vivid-red', // previously untested
+			],
+			$attributes
+		);
+	}
+
+	/**
+	 * Test retrieval of core/code block with custom styles and border color.
+	 *
+	 * Attributes covered:
+	 * - borderColor
+	 * - style
+	 * - className
+	 *
+	 * @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,
+			]
+		);
+
+		$query     = $this->query();
+		$variables = [
+			'id' => $this->post_id,
+		];
+
+		$actual = graphql( compact( 'query', 'variables' ) );
+
+		$this->assertArrayNotHasKey( 'errors', $actual, 'There should not be any errors' );
+		$this->assertArrayHasKey( 'data', $actual, 'The data key should be present' );
+		$this->assertArrayHasKey( 'post', $actual['data'], 'The post key should be present' );
+
+		$this->assertEquals( $this->post_id, $actual['data']['post']['databaseId'], 'The post ID should match' );
+
+		$this->assertEquals( 1, count( $actual['data']['post']['editorBlocks'] ) );
+
+		$block = $actual['data']['post']['editorBlocks'][0];
+
+		$this->assertEquals( 'core/code', $block['name'], 'The block name should be core/code' );
+
+		$attributes = $block['attributes'];
+		$this->assertEquals(
+			[
+				'anchor'          => null,
+				'backgroundColor' => null,
+				'borderColor'     => 'vivid-cyan-blue', // previously untested
+				'className'       => 'custom-class', // previously untested
+				'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,
+				'style'           => wp_json_encode( // previously untested
+					[
+						'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
+	 *
+	 * @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,
+			]
+		);
+
+		$query     = $this->query();
+		$variables = [
+			'id' => $this->post_id,
+		];
+
+		$actual = graphql( compact( 'query', 'variables' ) );
+
+		$this->assertArrayNotHasKey( 'errors', $actual, 'There should not be any errors' );
+		$this->assertArrayHasKey( 'data', $actual, 'The data key should be present' );
+		$this->assertArrayHasKey( 'post', $actual['data'], 'The post key should be present' );
+
+		$this->assertEquals( $this->post_id, $actual['data']['post']['databaseId'], 'The post ID should match' );
+
+		$this->assertEquals( 1, count( $actual['data']['post']['editorBlocks'] ) );
+
+		$block = $actual['data']['post']['editorBlocks'][0];
+
+		$this->assertEquals( 'core/code', $block['name'], 'The block name should be core/code' );
+
+		$attributes = $block['attributes'];
+		$this->assertEquals(
+			[
+				'anchor'          => 'test-anchor', // previously untested
+				'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', // previously untested
+				'lock'            => '{"move":true,"remove":true}', // previously untested
+				'style'           => null,
+				'textColor'       => null,
+			],
+			$attributes
+		);
+	}
+
+	/**
+	 * Test the retrieval of the align attribute for core/code block.
+	 */
+	public function test_retrieve_core_code_align_attribute(): void {
+		// The align attribute is only supported in WP 6.3+
+		if ( ! is_wp_version_compatible( '6.3' ) ) {
+			$this->markTestSkipped( 'This test requires WP 6.3 or higher.' );
+		}
+
+		$block_content = '
+        <!-- wp:code {"align":"wide","anchor":"test-anchor","gradient":"vivid-cyan-blue-to-vivid-purple","lock":{"move":true,"remove":true}} -->
+        <pre id="test-anchor" class="wp-block-code alignwide has-vivid-cyan-blue-to-vivid-purple-gradient-background"><code>function test() { return "aligned code"; }</code></pre>
+        <!-- /wp:code>
+        ';
+
+		wp_update_post(
+			[
+				'ID'           => $this->post_id,
+				'post_content' => $block_content,
+			]
+		);
+
+		$query = '
+        query CoreCodeAlignTest($id: ID!) {
+            post(id: $id, idType: DATABASE_ID) {
+                editorBlocks {
+                    ... on CoreCode {
+                        attributes {
+                            align
+                            anchor
+                            backgroundColor
+                            borderColor
+                            className
+                            content
+                            cssClassName
+                            fontFamily
+                            fontSize
+                            gradient
+                            lock
+                            style
+                            textColor
+                        }
+                    }
+                }
+            }
+        }
+        ';
+
+		$variables = [
+			'id' => $this->post_id,
+		];
+
+		$actual = graphql( compact( 'query', 'variables' ) );
+
+		$this->assertArrayNotHasKey( 'errors', $actual, 'There should not be any errors' );
+		$this->assertArrayHasKey( 'data', $actual, 'The response should have a data key' );
+		$this->assertArrayHasKey( 'post', $actual['data'], 'The data should have a post key' );
+		$this->assertArrayHasKey( 'editorBlocks', $actual['data']['post'], 'The post should have editorBlocks' );
+		$this->assertCount( 1, $actual['data']['post']['editorBlocks'], 'There should be one editor block' );
+
+		$block      = $actual['data']['post']['editorBlocks'][0];
+		$attributes = $block['attributes'];
+
+		$this->assertEquals(
+			[
+				'align'           => 'wide', // previously untested
+				'anchor'          => 'test-anchor',
+				'backgroundColor' => null,
+				'borderColor'     => null,
+				'className'       => null,
+				'content'         => 'function test() { return "aligned code"; }',
+				'cssClassName'    => 'wp-block-code alignwide 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}',
+				'style'           => null,
+				'textColor'       => null,
+			],
+			$attributes
+		);
+	}
+}