Rails 4 - 所有测试都失败(甚至断言为真) [英] Rails 4 - All Tests Failing (even Assert true)

问题描述

Rails 新手，刚刚开始学习测试.我们遇到了一个问题，这个问题可能有一个简单的答案，却让我们难住了.

New to rails and just getting started learning testing. We're having a problem that probably has a simple answer that has us stumped.

我们已经编写了一些代码并使其在开发中工作(只是静态代码和带有设计的登录系统).我们文件中唯一的测试用例是由 rails 生成的，例如:

We have wrote some code and got it working in development (just static code and a login system w/ Devise). The only test cases in our file were generated by rails, for example:

  test "should get about" do
    get :about
    assert_response :success
  end

然而，当我们运行 bundle exec rake test 时，令我们惊讶的是，我们每次测试都失败了.

However, when we run bundle exec rake test, to our surprise, we fail every single test.

10 runs, 0 assertions, 0 failures, 10 errors, 0 skips

每次测试都有相同的错误:

Each test has the same error:

ActiveRecord::StatementInvalid: PG::NotNullViolation: ERROR:  null value in column "email" violates not-null constraint
DETAIL:  Failing row contains (980190962, null, 2015-10-27 09:40:30, 2015-10-27 09:40:30).
: INSERT INTO "leads" ("created_at", "updated_at", "id") VALUES ('2015-10-27 09:40:30', '2015-10-27 09:40:30', 980190962)

通过阅读该错误，我们的 leads 表中似乎有一些没有电子邮件的记录.电子邮件是迁移后后来创建的一个字段.但是，通过 psqlAdmin 查看，每一行都有一个电子邮件.此外，如果我们在 chrome 中加载页面后查看控制台，则没有错误.

By reading that error, it seems like there is some record in our leads table without an email. E-mail was a field created later after a migration. However, looking through psqlAdmin, every row has an e-mail. Furthermore, if we look in the console after loading the pages in chrome, there are no errors.

即使是最基本的测试也会因相同的错误而失败:

Even the most basic test is failing with the same error:

test "the truth" do
    assert true
end

我唯一的猜测是有一些默认种子正在发生，它试图在没有电子邮件的情况下将一个字段插入到潜在客户中.但是，seeds.rb 是完全空白的.

My only guess is that there is some default seeding going on, and it is trying to insert a field into leads without an e-mail. However, seeds.rb is completely blank.

这是我在终端中通话的开始:

Here is the start of my call in terminal:

Macintosh-2:triplanding Calvino$ bundle exec rake test
Run options: --seed 15348

# Running:

EEEEEEEEEE

Finished in 0.108843s, 91.8753 runs/s, 0.0000 assertions/s.

1. 为什么这些测试失败了?
2. 为什么 leads 甚至会参与像 assert true 这样的测试.

1. Why are these tests failing?
2. Why is the leads even involved in a test like assert true.

先谢谢你！

更新

这是我的 fixture/leads.yml 文件.我们没有编辑它，这是生成的:

Here is my fixture/leads.yml file. We did not edit it, this is what was generated:

one: {}
# column: value
#
two: {}
#  column: value

推荐答案

很可能是因为您的设备无法运行，原因是:

Moste likely it is because your fixtures cannot run due to:

ActiveRecord::StatementInvalid: PG::NotNullViolation: ERROR:  null value in column "email" violates not-null constraint

检查您的潜在客户固定装置是否包含空电子邮件，它应该可以工作！

Check that none of your fixtures for leads contains a null email and it should probably work!

每当您在 rails 上运行测试时，它都会设置测试数据库(这就是即使 assert true 失败的原因)

Whenever you run tests on rails it will setup the test-database (this is the reason even assert true fails)

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