public async Task DevServer_Returns404WhenWebpackFileNotFound() { // Arrange var mock = new WebpackServiceMock(); mock.AddNonExistantFile("/public/bundle.js"); using (var server = CreateServer(mock)) { // Act // Actual request. var response = await server.CreateRequest("/public/bundle.js").SendAsync("GET"); // Assert Assert.Equal(System.Net.HttpStatusCode.NotFound, response.StatusCode); } }