cucumber/cucumber-ruby

Discuss Cucumber-Ruby

Eric Kessler

@enkessler

Also Background:

greybox99

@greybox99

does 'Then the output should contain' not support multi-line?

how do I test for multiple words in output?

Eric Kessler

@enkessler

@greybox99 We'll need a little more context than that. Is that a step that you made or what?

greybox99

@greybox99

@enkessler thanks for getting back to me

@enkessler it's the default cucumber step def

Then the output should contain:
"""
word
"""

however my output contains multiple words that I need to test for, not in same order.

how to do this?

Eric Kessler

@enkessler

How are you capturing the output?

greybox99

@greybox99

@enkessler it's a bash command with Aruba

@enkessler doesn't cucumber have any built in func to test output for multiple words?

Eric Kessler

@enkessler

Not to my knowledge, no.

greybox99

@greybox99

@enkessler what would be the best way to do this then?

Eric Kessler

@enkessler

http://blog.honeybadger.io/capturing-stdout-stderr-from-shell-commands-via-ruby/

Take your pick.

greybox99

@greybox99

@enkessler I already have the output...

@enkessler as I said I need to test for multiple words in the output

Eric Kessler

@enkessler

If you can already test for a single word/phrase, you could simply loop through all of your expected words/phrases and check them individually.

greybox99

@greybox99

thats a lot of duplicate tests rather than writing multiple words in the same test....

Eric Kessler

@enkessler

How is that duplicated?

greybox99

@greybox99

When I run w
Then the output should contain:
"""
uptime
"""

When I run w
Then the output should contain:
"""
days
"""

how is this not duplication?

Eric Kessler

@enkessler

That's not a Ruby loop. That's copy pasting Gherkin over and over, which was not my suggestion.

greybox99

@greybox99

instead of just
"""
uptime
days
"""

Eric Kessler

@enkessler

When you get the multi-line block in your step def, #split it on newlines and loop through the resulting array.

greybox99

@greybox99

@enkessler can you show me?

Eric Kessler

@enkessler

Then(/your pattern here/) do |expected_words|
  expected_words.split("\n").each do |word|
    expect(@previously_captured_output).to include(word)
  end
end

Something like that.

greybox99

@greybox99

@enkessler
expected nil to include "days", but it does not respond to include? (RSpec::Expectations::ExpectationNotMetError)
./features/step_definitions/lines_steps.rb:3:in block (2 levels) in <top (required)>' ./features/step_definitions/lines_steps.rb:2:ineach'
./features/step_definitions/lines_steps.rb:2:in `/^the output should include:$/'

Then(/^the output should include:$/) do |expected_words|
expected_words.split("\n").each do |word|
expect(@previously_captured_output).to include(word)
end
end

Eric Kessler

@enkessler

So...did you save the captured output into @previously_captured_output?

greybox99

@greybox99

yeah defined @previously_captured_output before the test

Eric Kessler

@enkessler

And yet it is nil.

greybox99

@greybox99

test is
@previously_captured_output
Scenario: Verify w
When I successfully run w
Then the output should include:
"""
days
"""

Eric Kessler

@enkessler

You applied @previously_captured_output as a tag on the test?

greybox99

@greybox99

is that not the way to save it?

Eric Kessler

@enkessler

That is not the way to save it.

A Gherkin tag and a Ruby Instance variable have nothing to do with each other.

greybox99

@greybox99

why do the step def need to search for the output within that tag? should be captured under all

Eric Kessler

@enkessler

@previously_captured_output is not a tag. It is an instance variable.

Rather, in Gherkin it is a tag but in Ruby it is an instance variable.

You are working with two languages.

greybox99

@greybox99

my apologies, so how do I set this?

Eric Kessler

@enkessler

What does your When step definition look like?

greybox99

@greybox99

@enkessler it's a built in method from Aruba which allows you to run bash commands directly from Gherkin

@enkessler is there any way I can avoid specifying @previously_captured_output and just search in all?

Eric Kessler

@enkessler

I don't know. I am not familiar with Aruba.

But they appear to have a room as well: https://gitter.im/cucumber/aruba

greybox99

@greybox99

@enkessler thanks, does seem inactive though.
so expect will need a output def? you can't do it without?

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