ruby on rails 3-只测试一个it或用Rspec描述

Question

在TestUnit上，您可以使用-n选项在文件中启动一个测试

例如

require 'test_helper'
class UserTest < ActiveSupport::TestCase
  test "the truth" do
    assert true
  end
  test "the truth 2" do
    assert true
  end
end

你只能执行测试真相

ruby -Itest test/unit/user_test.rb -n test_the_truth

输出

1 tests, 1 assertions, 0 failures, 0 errors, 0 skip

rspec怎么会这样？

命令似乎不起作用

rspec spec/models/user_spec.rb -e "User the truth"

Answer 1

您没有包含规范的来源，所以很难说问题出在哪里，但通常情况下，可以使用-e选项来运行单个示例。给定此规格：

# spec/models/user_spec.rb
require 'spec_helper'
describe User do
  it "is true" do
    true.should be_true
  end
  describe "validation" do
    it "is also true" do
      true.should be_true
    end
  end
end

此命令行：

rspec spec/models/user_spec.rb -e "User is true"

将产生以下输出：

Run filtered including {:full_description=>/(?-mix:User is true)/}
.
Finished in 0.2088 seconds
1 example, 0 failures

如果你想调用另一个例子，嵌套在验证组中的例子，你可以使用这个：

rspec spec/models/user_spec.rb -e "User validation is also true"

或者运行验证组中的所有示例：

rspec spec/models/user_spec.rb -e "User validation"

Answer 2

您还可以选择要执行的测试用例所在的行。

rspec spec/models/user_spec.rb:8

通过传递测试用例范围内的任何行，将只执行此测试用例。您还可以使用它在测试中执行整个上下文。

Answer 3

至少在Rspec 2.11.1中，您可以使用以下所有选项：

**过滤/标签**

In addition to the following options for selecting specific files, groups,
or examples, you can select a single example by appending the line number to
the filename:
  rspec path/to/a_spec.rb:37
-P, --pattern PATTERN            Load files matching pattern (default: "spec/**/*_spec.rb").
-e, --example STRING             Run examples whose full nested names include STRING (may be
                                   used more than once)
-l, --line_number LINE           Specify line number of an example or group (may be
                                   used more than once).
-t, --tag TAG[:VALUE]            Run examples with the specified tag, or exclude examples
                                 by adding ~ before the tag.
                                   - e.g. ~slow
                                   - TAG is always converted to a symbol