diff --git a/tests/theme/fixtures/input.js b/tests/theme/fixtures/input.js
index 1594e188..e221b5bd 100644
--- a/tests/theme/fixtures/input.js
+++ b/tests/theme/fixtures/input.js
@@ -5,6 +5,12 @@
  */
 export class WebpackTest {}
 
+/**
+ * Interface demonstrating Webpack as an interface.
+ * @interface
+ */
+export class WebpackInterface {}
+
 /**
  * Class demonstrating overload signatures.
  */
@@ -89,3 +95,68 @@ export class TypedListTest extends WebpackTest {
    */
   typedListMethod(name, count) {}
 }
+
+/**
+ * Complex array type.
+ * @typedef {Array<{ name: string, age: number }>} ComplexArrayType
+ */
+
+/**
+ * Simple array type.
+ * @typedef {Array<string>} SimpleArrayType
+ */
+
+/**
+ * Complex union type.
+ * @typedef {string | { advanced: boolean, timeout: number }} ComplexUnionType
+ */
+
+/**
+ * Simple union type.
+ * @typedef {string | number} SimpleUnionType
+ */
+
+/**
+ * Complex intersection type.
+ * @typedef {{ id: string } & { metadata: object }} ComplexIntersectionType
+ */
+
+/**
+ * Simple intersection type.
+ * @typedef {number & string} SimpleIntersectionType
+ */
+
+/**
+ * Variable demonstrating declarationTitle formatting.
+ * @type {string}
+ */
+export const declarationTitleTest = 'pass me';
+
+/**
+ * Class demonstrating indexSignature rendering.
+ */
+export class IndexSignatureTest {
+  /**
+   * An object property to trigger indexSignature.
+   * @type {{ [key: string]: number }}
+   */
+  dictionaryProperty;
+}
+
+/**
+ * Class demonstrating Implements and Constructor grouping.
+ * @implements {WebpackInterface}
+ */
+export class MemberGroupsTest {
+  /**
+   * The constructor for MemberGroupsTest.
+   * @param {any} data
+   */
+  constructor(data) {}
+
+  /**
+   * A categorized method.
+   * @category Lifecycle
+   */
+  init() {}
+}
diff --git a/tests/theme/fixtures/tsconfig.json b/tests/theme/fixtures/tsconfig.json
index caddb7f2..ff8f0ace 100644
--- a/tests/theme/fixtures/tsconfig.json
+++ b/tests/theme/fixtures/tsconfig.json
@@ -3,7 +3,9 @@
   "compilerOptions": {
     "allowJs": true,
     "esModuleInterop": true,
-    "noEmit": true,
+    "declaration": true,
+    "emitDeclarationOnly": true,
+    "outDir": "../.temp/types",
     "skipLibCheck": true
   }
 }
diff --git a/tests/theme/theme.test.mjs b/tests/theme/theme.test.mjs
index 8243c696..982eff27 100644
--- a/tests/theme/theme.test.mjs
+++ b/tests/theme/theme.test.mjs
@@ -1,21 +1,27 @@
 import { test } from 'node:test';
 import { Application } from 'typedoc';
-import { readdirSync, readFileSync, rmSync } from 'node:fs';
+import { readdirSync, readFileSync, rmSync, writeFileSync } from 'node:fs';
 import { join } from 'node:path/posix';
+import { execSync } from 'node:child_process';
 import { typeDocConfig } from '../../scripts/markdown/api/utils.mjs';
 
 const fixturesDir = './tests/theme/fixtures';
 const outputDir = './tests/theme/.temp';
+const typesDir = './tests/theme/.temp/types';
+const tsconfig = { include: ['**/*.d.ts'] };
 
 test('TypeDoc Theme - Edge Cases Fixture', async t => {
-  const inputFilePath = join(fixturesDir, 'input.js');
+  execSync(`npx tsc -p ${join(fixturesDir, 'tsconfig.json')}`, {
+    stdio: 'inherit',
+  });
+  writeFileSync(join(typesDir, 'tsconfig.json'), JSON.stringify(tsconfig));
 
   const app = await Application.bootstrapWithPlugins({
     ...typeDocConfig,
-    entryPoints: [inputFilePath],
+    entryPoints: [join(typesDir, 'input.d.ts')],
     out: outputDir,
     publicPath: '/',
-    tsconfig: join(fixturesDir, 'tsconfig.json'),
+    tsconfig: join(typesDir, 'tsconfig.json'),
   });
 
   const project = await app.convert();
diff --git a/tests/theme/theme.test.mjs.snapshot b/tests/theme/theme.test.mjs.snapshot
index df06a1ee..3c36dda3 100644
--- a/tests/theme/theme.test.mjs.snapshot
+++ b/tests/theme/theme.test.mjs.snapshot
@@ -1,3 +1,3 @@
 exports[`TypeDoc Theme - Edge Cases Fixture 1`] = `
-"# Class: \`webpack.js.org.ExamplesTest\`\\n\\nClass demonstrating the formatting of JSDoc example blocks.\\n\\n## Constructors\\n\\n### \`new ExamplesTest()\`\\n\\n* Returns: {ExamplesTest}\\n\\n## Methods\\n\\n### \`exampleMethod(name)\`\\n\\n* \`name\` {string} A simple string parameter\\n* Returns: {void} \\n\\nA sample method for the ExamplesTest class.\\n\`\`\`ts\\nexampleMethod('example-1');\\n\`\`\`\\n\\n\`\`\`ts\\nexampleMethod('example-2');\\n\`\`\`\\n\\n\\n---\\n\\n# Class: \`webpack.js.org.OverloadTest\`\\n\\nClass demonstrating overload signatures.\\n\\n## Constructors\\n\\n### \`new OverloadTest()\`\\n\\n* Returns: {OverloadTest}\\n\\n## Methods\\n\\n### \`overloadMethod(name, count)\`\\n\\n#### Call Signature\\n\\n* \`name\` {string} A simple string parameter\\n* \`count\` {number} A simple number parameter\\n* Returns: {void} \\n\\nFirst overload signature.\\n\\n#### Call Signature\\n\\n* \`isEnabled\` {boolean} A simple boolean parameter\\n* Returns: {string} \\n\\nSecond overload signature.\\n\\n#### Call Signature\\n\\n* \`id\` {number} A simple string parameter\\n* \`isEnabled\` {boolean} A simple boolean parameter\\n* Returns: {void} \\n\\nThird overload signature.\\n\\n\\n---\\n\\n# Class: \`webpack.js.org.StabilityTest\`\\n\\nClass demonstrating stability for deprecated, experimental, and legacy APIs.\\n\\n## Constructors\\n\\n### \`new StabilityTest()\`\\n\\n* Returns: {StabilityTest}\\n\\n## Methods\\n\\n### \`deprecatedMethod()\`\\n\\n> Stability: 0 - Deprecated: Use the new API instead.\\n\\n* Returns: {void}\\n\\n***\\n\\n### \`experimentalMethod()\`\\n\\n> Stability: 1 - Experimental\\n\\n* Returns: {void}\\n\\n**\`Experimental\`**\\n\\n***\\n\\n### \`legacyMethod()\`\\n\\n> Stability: 3 - Legacy: This is a legacy Webpack v4 API.\\n\\n* Returns: {void}\\n\\n\\n---\\n\\n# Class: \`webpack.js.org.TypedListTest\`\\n\\nClass demonstrating properties and typed lists.\\n\\n* Extends: {WebpackTest}\\n\\n## Constructors\\n\\n### \`new TypedListTest()\`\\n\\n* Returns: {TypedListTest}\\n\\n## Properties\\n\\n* \`typedListProperty\` {string} A sample property for the TypedListTest class.\\n\\n## Methods\\n\\n### \`typedListMethod(name, count)\`\\n\\n* \`name\` {string} The name of the instance\\n* \`count\` {number} The count of items\\n* Returns: {boolean} A boolean indicating success\\n\\nA sample method for the TypedListTest class.\\n\\n\\n---\\n\\n# Class: \`webpack.js.org.WebpackTest\`\\n\\nClass demonstrating Webpack as a parent class.\\n\\n## Constructors\\n\\n### \`new WebpackTest()\`\\n\\n* Returns: {WebpackTest}\\n"
+"# Class: \`webpack.js.org.ExamplesTest\`\\n\\nClass demonstrating the formatting of JSDoc example blocks.\\n\\n## Constructors\\n\\n### \`new ExamplesTest()\`\\n\\n* Returns: {ExamplesTest}\\n\\n## Methods\\n\\n### \`exampleMethod(name)\`\\n\\n* \`name\` {string} A simple string parameter\\n* Returns: {void} \\n\\nA sample method for the ExamplesTest class.\\n\`\`\`ts\\nexampleMethod('example-1');\\n\`\`\`\\n\\n\`\`\`ts\\nexampleMethod('example-2');\\n\`\`\`\\n\\n\\n---\\n\\n# Class: \`webpack.js.org.IndexSignatureTest\`\\n\\nClass demonstrating indexSignature rendering.\\n\\n## Constructors\\n\\n### \`new IndexSignatureTest()\`\\n\\n* Returns: {IndexSignatureTest}\\n\\n## Properties\\n\\n* \`dictionaryProperty\` {{ [key: string]: number }} An object property to trigger indexSignature.\\n\\n\\n---\\n\\n# Class: \`webpack.js.org.MemberGroupsTest\`\\n\\nClass demonstrating Implements and Constructor grouping.\\n\\n## Implements\\n\\n* {WebpackInterface}\\n\\n## Constructors\\n\\n### \`new MemberGroupsTest(data)\`\\n\\n* \`data\` {any} \\n* Returns: {MemberGroupsTest}\\n\\nThe constructor for MemberGroupsTest.\\n\\n## Lifecycle\\n\\n### \`init()\`\\n\\n* Returns: {void}\\n\\nA categorized method.\\n\\n\\n---\\n\\n# Class: \`webpack.js.org.OverloadTest\`\\n\\nClass demonstrating overload signatures.\\n\\n## Constructors\\n\\n### \`new OverloadTest()\`\\n\\n* Returns: {OverloadTest}\\n\\n## Methods\\n\\n### \`overloadMethod(name, count)\`\\n\\n#### Call Signature\\n\\n* \`name\` {string} A simple string parameter\\n* \`count\` {number} A simple number parameter\\n* Returns: {void} \\n\\nFirst overload signature.\\n\\n#### Call Signature\\n\\n* \`isEnabled\` {boolean} A simple boolean parameter\\n* Returns: {string} \\n\\nSecond overload signature.\\n\\n#### Call Signature\\n\\n* \`id\` {number} A simple string parameter\\n* \`isEnabled\` {boolean} A simple boolean parameter\\n* Returns: {void} \\n\\nThird overload signature.\\n\\n\\n---\\n\\n# Class: \`webpack.js.org.StabilityTest\`\\n\\nClass demonstrating stability for deprecated, experimental, and legacy APIs.\\n\\n## Constructors\\n\\n### \`new StabilityTest()\`\\n\\n* Returns: {StabilityTest}\\n\\n## Methods\\n\\n### \`deprecatedMethod()\`\\n\\n> Stability: 0 - Deprecated: Use the new API instead.\\n\\n* Returns: {void}\\n\\n***\\n\\n### \`experimentalMethod()\`\\n\\n> Stability: 1 - Experimental\\n\\n* Returns: {void}\\n\\n**\`Experimental\`**\\n\\n***\\n\\n### \`legacyMethod()\`\\n\\n> Stability: 3 - Legacy: This is a legacy Webpack v4 API.\\n\\n* Returns: {void}\\n\\n\\n---\\n\\n# Class: \`webpack.js.org.TypedListTest\`\\n\\nClass demonstrating properties and typed lists.\\n\\n* Extends: {WebpackTest}\\n\\n## Constructors\\n\\n### \`new TypedListTest()\`\\n\\n* Returns: {TypedListTest}\\n\\n## Properties\\n\\n* \`typedListProperty\` {string} A sample property for the TypedListTest class.\\n\\n## Methods\\n\\n### \`typedListMethod(name, count)\`\\n\\n* \`name\` {string} The name of the instance\\n* \`count\` {number} The count of items\\n* Returns: {boolean} A boolean indicating success\\n\\nA sample method for the TypedListTest class.\\n\\n\\n---\\n\\n# Class: \`webpack.js.org.WebpackInterface\`\\n\\n**\`Interface\`**\\n\\nInterface demonstrating Webpack as an interface.\\n\\n## Constructors\\n\\n### \`new WebpackInterface()\`\\n\\n* Returns: {WebpackInterface}\\n\\n\\n---\\n\\n# Class: \`webpack.js.org.WebpackTest\`\\n\\nClass demonstrating Webpack as a parent class.\\n\\n## Constructors\\n\\n### \`new WebpackTest()\`\\n\\n* Returns: {WebpackTest}\\n\\n\\n---\\n\\n# \`webpack\` Types\\n\\nThese types are not exported by webpack, but they are available to TypeScript consumers.\\n\\n## Type: \`ComplexArrayType\`\\n\\n* Type: {{ age: number; name: string }[]}\\n\\nComplex array type.\\n\\n### Type Declaration\\n\\n* \`age\` {number}\\n* \`name\` {string}\\n\\n***\\n\\n## Type: \`ComplexIntersectionType\`\\n\\n* Type: {{ id: string } & { metadata: object }}\\n\\nComplex intersection type.\\n\\n### Type Declaration\\n\\n* \`id\` {string}\\n\\n### Type Declaration\\n\\n* \`metadata\` {object}\\n\\n***\\n\\n## Type: \`ComplexUnionType\`\\n\\n* Type: {string | { advanced: boolean; timeout: number }}\\n\\nComplex union type.\\n\\n***\\n\\n## Type: \`SimpleArrayType\`\\n\\n* Type: {string[]}\\n\\nSimple array type.\\n\\n***\\n\\n## Type: \`SimpleIntersectionType\`\\n\\n* Type: {number & string}\\n\\nSimple intersection type.\\n\\n***\\n\\n## Type: \`SimpleUnionType\`\\n\\n* Type: {string | number}\\n\\nSimple union type.\\n"
 `;