diff --git a/tests/server.test.ts b/tests/server.test.ts
index 1e66834..007ca66 100644
--- a/tests/server.test.ts
+++ b/tests/server.test.ts
@@ -42,6 +42,13 @@ test("Express app", async (done) => {
 
     it("subpath html is served correctly");
 
+    response = await request(app).get("/nopath/");
+    expect(response.status).toBe(404);
+    response = await request(app).get("/nopath/route");
+    expect(response.status).toBe(404);
+
+    it("no existing indexes response with 404");
+
     response = await request(app).get("/test.txt");
     expect(response.text).toBe("Hello from test.txt");
 
@@ -103,6 +110,13 @@ test("Express app with explicit static middleware", async (done) => {
     expect(response.headers.before).toBe("1");
     expect(response.headers.after).toBe("1");
 
+    response = await request(app).get("/nopath/");
+    expect(response.status).toBe(404);
+    response = await request(app).get("/nopath/route");
+    expect(response.status).toBe(404);
+
+    it("no existing indexes response with 404");
+
     response = await request(app).get("/test.txt");
     expect(response.text).toBe("Hello from test.txt");
 
@@ -157,6 +171,13 @@ test("Express app with custom http server", async (done) => {
 
     it("subpath html is served correctly");
 
+    response = await request(app).get("/nopath/");
+    expect(response.status).toBe(404);
+    response = await request(app).get("/nopath/route");
+    expect(response.status).toBe(404);
+
+    it("no existing indexes response with 404");
+
     response = await request(app).get("/test.txt");
     expect(response.text).toBe("Hello from test.txt");
 
@@ -241,6 +262,13 @@ test("Express app with transformer function", async (done) => {
 
     it("subpath html is transformed correctly");
 
+    response = await request(app).get("/nopath/");
+    expect(response.status).toBe(404);
+    response = await request(app).get("/nopath/route");
+    expect(response.status).toBe(404);
+
+    it("no existing indexes response with 404");
+
     response = await request(app).get("/test.txt");
     expect(response.text).toBe("Hello from test.txt");
 
@@ -275,6 +303,13 @@ test("Express app with ignored paths", async (done) => {
 
     it("subpath html is served correctly");
 
+    response = await request(app).get("/nopath/");
+    expect(response.status).toBe(404);
+    response = await request(app).get("/nopath/route");
+    expect(response.status).toBe(404);
+
+    it("no existing indexes response with 404");
+
     response = await request(app).get("/ignored");
     expect(response.text).toMatch(/Cannot GET \/ignored/);