diff --git a/.changeset/ninety-items-perform.md b/.changeset/ninety-items-perform.md
new file mode 100644
index 0000000..3929692
--- /dev/null
+++ b/.changeset/ninety-items-perform.md
@@ -0,0 +1,5 @@
+---
+"vite-plugin-doctest": patch
+---
+
+Fix unexpected skip testing
diff --git a/packages/vite-plugin-doctest/package.json b/packages/vite-plugin-doctest/package.json
index 9fac63f..fcc7b0f 100644
--- a/packages/vite-plugin-doctest/package.json
+++ b/packages/vite-plugin-doctest/package.json
@@ -23,7 +23,8 @@
 	],
 	"scripts": {
 		"build": "tsup src/index.ts --format esm --dts",
-		"check": "tsc --noEmit"
+		"check": "tsc --noEmit",
+		"test": "vitest run"
 	},
 	"repository": {
 		"type": "git",
diff --git a/packages/vite-plugin-doctest/src/transformers/typescript.spec.ts b/packages/vite-plugin-doctest/src/transformers/typescript.spec.ts
new file mode 100644
index 0000000..a25ed17
--- /dev/null
+++ b/packages/vite-plugin-doctest/src/transformers/typescript.spec.ts
@@ -0,0 +1,154 @@
+import { expect, it } from "vitest";
+import { transform } from "./typescript";
+const getCode = (maybeCode: string | { code: string }) =>
+	typeof maybeCode === "string" ? maybeCode : maybeCode.code;
+it("should generate test code", () => {
+	expect(
+		getCode(
+			transform(
+				`
+/**
+ * @example
+ * \`\`\`ts @import.meta.vitest
+ * expect(add(1, 2)).toBe(3);
+ * \`\`\`
+ */
+export const add = (a: number, b: number) => a + b;`,
+				"add.ts",
+			),
+		),
+	).toMatchInlineSnapshot(`
+		"
+		/**
+		 * @example
+		 * \`\`\`ts @import.meta.vitest
+		 * expect(add(1, 2)).toBe(3);
+		 * \`\`\`
+		 */
+		export const add = (a: number, b: number) => a + b;
+		if (import.meta.vitest) {
+		const {assert,chai,createExpect,expect,getRunningMode,isWatchMode,should,vi,vitest} = import.meta.vitest;
+		import.meta.vitest.test("add.ts#0", async () => {
+		expect(add(1, 2)).toBe(3);
+		});
+		}"
+	`);
+
+	expect(
+		getCode(
+			transform(
+				`
+/**
+ * @example
+ * \`\`\`ts @import.meta.vitest
+ * const { add } = await import('./add');
+ * expect(add(1, 2)).toBe(3);
+ * \`\`\`
+ */
+export const sub = (a: number, b: number) => {
+	/**
+	 * @example
+	 * \`\`\`ts @import.meta.vitest
+	 * expect(sub(1, 2)).toBe(-1);
+	 * \`\`\`
+	 */
+
+	return a - b;
+};`,
+				"sub.ts",
+			),
+		),
+	).toMatchInlineSnapshot(`
+		"
+		/**
+		 * @example
+		 * \`\`\`ts @import.meta.vitest
+		 * const { add } = await import('./add');
+		 * expect(add(1, 2)).toBe(3);
+		 * \`\`\`
+		 */
+		export const sub = (a: number, b: number) => {
+			/**
+			 * @example
+			 * \`\`\`ts @import.meta.vitest
+			 * expect(sub(1, 2)).toBe(-1);
+			 * \`\`\`
+			 */
+
+			return a - b;
+		};
+		if (import.meta.vitest) {
+		const {assert,chai,createExpect,expect,getRunningMode,isWatchMode,should,vi,vitest} = import.meta.vitest;
+		import.meta.vitest.test("sub.ts#0", async () => {
+		const { add } = await import('./add');
+		expect(add(1, 2)).toBe(3);
+		});
+		import.meta.vitest.test("sub.ts#1", async () => {
+		expect(sub(1, 2)).toBe(-1);
+		});
+		}"
+	`);
+
+	expect(
+		getCode(
+			transform(
+				`
+/**
+ * @example
+ * \`\`\`ts @import.meta.vitest
+ * const hoge = new Hoge();
+ * assert(hoge instanceof Hoge);
+ * \`\`\`
+ */
+class Hoge {
+	internal = 1;
+  /**
+   * @example
+   * \`\`\`ts @import.meta.vitest
+   * const hoge = new Hoge();
+   * expect(hoge.add(1)).toBe(2);
+   * expect(hoge.add(2)).toBe(4);
+   * \`\`\`
+  add(num) {
+    return this.internal += num;
+  }
+}`,
+				"class.js",
+			),
+		),
+	).toMatchInlineSnapshot(`
+		"
+		/**
+		 * @example
+		 * \`\`\`ts @import.meta.vitest
+		 * const hoge = new Hoge();
+		 * assert(hoge instanceof Hoge);
+		 * \`\`\`
+		 */
+		class Hoge {
+			internal = 1;
+		  /**
+		   * @example
+		   * \`\`\`ts @import.meta.vitest
+		   * const hoge = new Hoge();
+		   * expect(hoge.add(1)).toBe(2);
+		   * expect(hoge.add(2)).toBe(4);
+		   * \`\`\`
+		  add(num) {
+		    return this.internal += num;
+		  }
+		}
+		if (import.meta.vitest) {
+		const {assert,chai,createExpect,expect,getRunningMode,isWatchMode,should,vi,vitest} = import.meta.vitest;
+		import.meta.vitest.test("class.js#0", async () => {
+		const hoge = new Hoge();
+		assert(hoge instanceof Hoge);
+		});
+		import.meta.vitest.test("class.js#1", async () => {
+		const hoge = new Hoge();
+		expect(hoge.add(1)).toBe(2);
+		expect(hoge.add(2)).toBe(4);
+		});
+		}"
+	`);
+});
diff --git a/packages/vite-plugin-doctest/src/transformers/typescript.ts b/packages/vite-plugin-doctest/src/transformers/typescript.ts
index 4a104f2..d03c8e9 100644
--- a/packages/vite-plugin-doctest/src/transformers/typescript.ts
+++ b/packages/vite-plugin-doctest/src/transformers/typescript.ts
@@ -1,7 +1,6 @@
 import MagicString from "magic-string";
 import typescript from "typescript";
 import { extractCode, vitestExports } from "./utils";
-
 export function transform(code: string, id: string) {
 	const node = typescript.createSourceFile(
 		id,
@@ -43,10 +42,9 @@ function findJSDoc(node: typescript.Node): typescript.JSDoc[] {
 			...node.jsDoc.flatMap((doc) => (typescript.isJSDoc(doc) ? [doc] : [])),
 		);
 	}
-	node.forEachChild(
-		(child) => nodes.push(...findJSDoc(child)),
-		(children) => nodes.push(...children.flatMap((child) => findJSDoc(child))),
-	);
+	node.forEachChild((child) => {
+		nodes.push(...findJSDoc(child));
+	});
 	return nodes;
 }
 
diff --git a/test/test.js b/test/test.js
index caed8d9..eb79192 100644
--- a/test/test.js
+++ b/test/test.js
@@ -9,8 +9,8 @@ async function run() {
 	await runVitest().catch(console.error);
 	const results = await loadTestResults();
 
-	assert(results.numTotalTests === 7, "Incorrect number of total tests");
-	assert(results.numPassedTests === 7, "Incorrect number of passed tests");
+	assert(results.numTotalTests === 8, "Incorrect number of total tests");
+	assert(results.numPassedTests === 8, "Incorrect number of passed tests");
 	assert(results.numFailedTests === 0, "Incorrect number of failed tests");
 }