我有以下凤凰应用程序：
mix phoenix.new my_app --database mysql
cd my_app
mix ecto.create
mix phoenix.gen.html User users name:string
mix ecto.migrate
现在mix test运行没有问题。
如果我将test/controllers/user_controller_test.exs更改为期望"某些内容"而不是"显示用户"，show由于@valid_attrs %{name: "some content"}而应该存在，则测试失败。为什么会这样呢？user#show页面上应该有"一些内容"。当我在浏览器中以development模式手动尝试它时，它就有了。
错误在哪里？我该如何解决它？
test/controllers/user_controller_test.exs
defmodule MyApp.UserControllerTest do
use MyApp.ConnCase
alias MyApp.User
@valid_attrs %{name: "some content"}
@invalid_attrs %{}
[...]
test "shows chosen resource", %{conn: conn} do
user = Repo.insert! %User{}
conn = get conn, user_path(conn, :show, user)
assert html_response(conn, 200) =~ "some content"
end
[...]
测试输出
$ mix test
........
1) test shows chosen resource (MyApp.UserControllerTest)
test/controllers/user_controller_test.exs:29
Assertion with =~ failed
code: html_response(conn, 200) =~ "some content"
lhs: "<!DOCTYPE html>n<html lang="en">n <head>n <meta charset="utf-8">n <meta http-equiv="X-UA-Compatible" content="IE=edge">n <meta name="viewport" content="width=device-width, initial-scale=1">n <meta name="description" content="">n <meta name="author" content="">nn <title>Hello MyApp!</title>n <link rel="stylesheet" href="/css/app.css">n </head>nn <body>n <div class="container">n <header class="header">n <nav role="navigation">n <ul class="nav nav-pills pull-right">n <li><a href="http://www.phoenixframework.org/docs">Get Started</a></li>n </ul>n </nav>n <span class="logo"></span>n </header>nn <p class="alert alert-info" role="alert"></p>n <p class="alert alert-danger" role="alert"></p>nn <main role="main">n <h2>Show user</h2>nn<ul>nn <li>n <strong>Name:</strong>n n </li>nn</ul>nn<a href="/users/16/edit">Edit</a>n<a href="/users">Back</a>nn </main>nn </div> <!-- /container -->n <script src="/js/app.js"></script>n </body>n</html>n"
rhs: "some content"
stacktrace:
test/controllers/user_controller_test.exs:32
.......
Finished in 0.4 seconds (0.2s on load, 0.1s on tests)
16 tests, 1 failure
Randomized with seed 734322
行
user = Repo.insert! %User{}
插入所有字段都设置为 nil 的用户。
如果要使用 @valid_attrs 创建用户，请将该行更改为：
user = Repo.insert! User.changeset(%User{}, @valid_attrs)