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|
Feature: Prepend environment variable
It is quite handy to modify the environment of a process. To make this
possible, `aruba` provides several methods. One of these is
`#prepend_environment_variable`. Using this variable prepends a given value to
an existing one. If the variable does not exist, it is created with the given
value.
Each variable name and each value is converted to a string. Otherwise `ruby`
would complain about an invalid argument. To make use of a variable you can
either use `#run_command` and the like or `#with_environment`.
Background:
Given I use the fixture "cli-app"
Scenario: Non-existing variable
Given a file named "spec/environment_spec.rb" with:
"""ruby
require 'spec_helper'
RSpec.describe 'Long running command', :type => :aruba do
before(:each) { prepend_environment_variable 'LONG_LONG_VARIABLE', 'a' }
before(:each) { run_command('env') }
before(:each) { stop_all_commands }
it { expect(last_command_started.output).to include 'LONG_LONG_VARIABLE=a' }
end
"""
When I run `rspec`
Then the specs should all pass
Scenario: Existing inner variable
Given a file named "spec/environment_spec.rb" with:
"""ruby
require 'spec_helper'
RSpec.describe 'Long running command', :type => :aruba do
before(:each) { prepend_environment_variable 'LONG_LONG_VARIABLE', 'a' }
before(:each) { prepend_environment_variable 'LONG_LONG_VARIABLE', 'b' }
before(:each) { run_command('env') }
before(:each) { stop_all_commands }
it { expect(last_command_started.output).to include 'LONG_LONG_VARIABLE=ba' }
end
"""
When I run `rspec`
Then the specs should all pass
Scenario: Existing outer variable
Given a file named "spec/environment_spec.rb" with:
"""ruby
require 'spec_helper'
ENV['REALLY_LONG_LONG_VARIABLE'] = 'a'
RSpec.describe 'Long running command', :type => :aruba do
before(:each) { prepend_environment_variable 'REALLY_LONG_LONG_VARIABLE', 'b' }
before(:each) { run_command('env') }
before(:each) { stop_all_commands }
it { expect(last_command_started.output).to include 'REALLY_LONG_LONG_VARIABLE=ba' }
# Has no effect here, is not in block and not a command `run`
it { expect(ENV['REALLY_LONG_LONG_VARIABLE']).to eq 'a' }
end
"""
When I run `rspec`
Then the specs should all pass
Scenario: Run some ruby code with previously set environment
Given a file named "spec/environment_spec.rb" with:
"""ruby
require 'spec_helper'
ENV['REALLY_LONG_LONG_VARIABLE'] = 'a'
RSpec.describe 'Long running command', :type => :aruba do
before(:each) { prepend_environment_variable 'REALLY_LONG_LONG_VARIABLE', 'b' }
before(:each) { run_command('env') }
before(:each) { stop_all_commands }
it do
with_environment do
expect(ENV['REALLY_LONG_LONG_VARIABLE']).to eq 'ba'
end
end
# Has no effect here, is not in block and not a command `run`
it { expect(ENV['REALLY_LONG_LONG_VARIABLE']).to eq 'a' }
end
"""
When I run `rspec`
Then the specs should all pass
Scenario: Run some ruby code with local environment
If you pass the same variable to the block it will not be prepended, but
overwrites the variable
Given a file named "spec/environment_spec.rb" with:
"""ruby
require 'spec_helper'
ENV['REALLY_LONG_LONG_VARIABLE'] = 'a'
RSpec.describe 'Long running command', :type => :aruba do
before(:each) { prepend_environment_variable 'REALLY_LONG_LONG_VARIABLE', 'b' }
before(:each) { run_command('env') }
before(:each) { stop_all_commands }
it do
with_environment 'REALLY_LONG_LONG_VARIABLE' => 'a' do
expect(ENV['REALLY_LONG_LONG_VARIABLE']).to eq 'a'
end
end
# Has no effect here, is not in block and not a command `run`
it { expect(ENV['REALLY_LONG_LONG_VARIABLE']).to eq 'a' }
end
"""
When I run `rspec`
Then the specs should all pass
|
