diff --git a/test/empty/index.ts b/test/empty/index.ts
new file mode 100644
index 0000000..ff8b4c5
--- /dev/null
+++ b/test/empty/index.ts
@@ -0,0 +1 @@
+export default {};
diff --git a/test/empty/wrangler.toml b/test/empty/wrangler.toml
new file mode 100644
index 0000000..4c09785
--- /dev/null
+++ b/test/empty/wrangler.toml
@@ -0,0 +1,4 @@
+name = "wrangler-action-test"
+main = "./index.ts"
+compatibility_date = "2023-07-07"
+workers_dev = true
diff --git a/test/npm/index.ts b/test/npm/index.ts
new file mode 100644
index 0000000..a330557
--- /dev/null
+++ b/test/npm/index.ts
@@ -0,0 +1,26 @@
+type Env = {
+	SECRET1?: string;
+	SECRET2?: string;
+};
+
+export default {
+	fetch(request: Request, env: Env) {
+		const url = new URL(request.url);
+
+		if (url.pathname === "/secret-health-check") {
+			const { SECRET1, SECRET2 } = env;
+
+			if (SECRET1 !== "SECRET_1_VALUE" || SECRET2 !== "SECRET_2_VALUE") {
+				throw new Error("SECRET1 or SECRET2 is not defined");
+			}
+
+			return new Response("OK");
+		}
+
+		// @ts-expect-error
+		return Response.json({
+			...request,
+			headers: Object.fromEntries(request.headers),
+		});
+	},
+};
diff --git a/test/npm/wrangler.toml b/test/npm/wrangler.toml
new file mode 100644
index 0000000..4c09785
--- /dev/null
+++ b/test/npm/wrangler.toml
@@ -0,0 +1,4 @@
+name = "wrangler-action-test"
+main = "./index.ts"
+compatibility_date = "2023-07-07"
+workers_dev = true
diff --git a/test/pnpm/index.ts b/test/pnpm/index.ts
new file mode 100644
index 0000000..a330557
--- /dev/null
+++ b/test/pnpm/index.ts
@@ -0,0 +1,26 @@
+type Env = {
+	SECRET1?: string;
+	SECRET2?: string;
+};
+
+export default {
+	fetch(request: Request, env: Env) {
+		const url = new URL(request.url);
+
+		if (url.pathname === "/secret-health-check") {
+			const { SECRET1, SECRET2 } = env;
+
+			if (SECRET1 !== "SECRET_1_VALUE" || SECRET2 !== "SECRET_2_VALUE") {
+				throw new Error("SECRET1 or SECRET2 is not defined");
+			}
+
+			return new Response("OK");
+		}
+
+		// @ts-expect-error
+		return Response.json({
+			...request,
+			headers: Object.fromEntries(request.headers),
+		});
+	},
+};
diff --git a/test/pnpm/wrangler.toml b/test/pnpm/wrangler.toml
new file mode 100644
index 0000000..4c09785
--- /dev/null
+++ b/test/pnpm/wrangler.toml
@@ -0,0 +1,4 @@
+name = "wrangler-action-test"
+main = "./index.ts"
+compatibility_date = "2023-07-07"
+workers_dev = true
diff --git a/test/yarn/index.ts b/test/yarn/index.ts
new file mode 100644
index 0000000..a330557
--- /dev/null
+++ b/test/yarn/index.ts
@@ -0,0 +1,26 @@
+type Env = {
+	SECRET1?: string;
+	SECRET2?: string;
+};
+
+export default {
+	fetch(request: Request, env: Env) {
+		const url = new URL(request.url);
+
+		if (url.pathname === "/secret-health-check") {
+			const { SECRET1, SECRET2 } = env;
+
+			if (SECRET1 !== "SECRET_1_VALUE" || SECRET2 !== "SECRET_2_VALUE") {
+				throw new Error("SECRET1 or SECRET2 is not defined");
+			}
+
+			return new Response("OK");
+		}
+
+		// @ts-expect-error
+		return Response.json({
+			...request,
+			headers: Object.fromEntries(request.headers),
+		});
+	},
+};
diff --git a/test/yarn/wrangler.toml b/test/yarn/wrangler.toml
new file mode 100644
index 0000000..4c09785
--- /dev/null
+++ b/test/yarn/wrangler.toml
@@ -0,0 +1,4 @@
+name = "wrangler-action-test"
+main = "./index.ts"
+compatibility_date = "2023-07-07"
+workers_dev = true