This content originally appeared on DEV Community and was authored by Akshay Khot
In Rails, if you want to run a specific test without the others in the file, you can pass the method's name to the --name flag.
def test_controller_name
# assert ...
end
> ruby -I test test/controller/renderer_test.rb --name test_controller_name
But, Rails also provides a test method that takes a test name and a block.
test "creating from a controller" do
# assert ...
end
How do you run this test that allows you to pass a string containing spaces?
For this, we need to step inside the test method and see what it's doing. If we open the source code for the test method, this is what it does:
def test(name, &block)
test_name = "test_#{name.gsub(/\s+/, '_')}".to_sym
defined = method_defined? test_name
raise "#{test_name} is already defined in #{self}" if defined
if block_given?
define_method(test_name, &block)
else
define_method(test_name) do
flunk "No implementation provided for #{name}"
end
end
end
The first line replaces all the spaces in the name string with an underscore _, and adds a test at the beginning. So, the test name creating from a controller becomes test_creating_from_a_controller. Then, using metaprogramming, it defines a method with that same name. So the above test method becomes:
def test_creating_from_a_controller
# assert ...
end
Now that you know the name, you can run this test as follows:
> ruby -I test test/controller/renderer_test.rb -n test_creating_from_a_controller
Hope this helps.
This content originally appeared on DEV Community and was authored by Akshay Khot
Akshay Khot | Sciencx (2022-05-08T23:45:23+00:00) Running a Single Test with Spaces in Minitest. Retrieved from https://www.scien.cx/2022/05/08/running-a-single-test-with-spaces-in-minitest/
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