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# frozen_string_literal: true
# Rspec matcher with build in retry logic
#
# USAGE:
#
# Basic
# expect { Something.that.takes.time.to_appear }.to eventually_eq(expected_result)
# expect { Something.that.takes.time.to_appear }.not_to eventually_eq(expected_result)
#
# With duration and attempts override
# expect { Something.that.takes.time.to_appear }.to eventually_eq(expected_result).within(duration: 10, attempts: 5)
module Matchers
%w[
eq
be
include
be_truthy
be_falsey
be_empty
].each do |op|
RSpec::Matchers.define(:"eventually_#{op}") do |*expected|
chain(:within) do |options = {}|
@duration = options[:duration]
@attempts = options[:attempts]
end
def supports_block_expectations?
true
end
match { |actual| wait_and_check(actual, :default_expectation) }
match_when_negated { |actual| wait_and_check(actual, :when_negated_expectation) }
description do
"eventually #{operator_msg} #{expected.inspect}"
end
failure_message do
"#{e}:\nexpected to #{description}, last attempt was #{@result.nil? ? 'nil' : @result}"
end
failure_message_when_negated do
"#{e}:\nexpected not to #{description}, last attempt was #{@result.nil? ? 'nil' : @result}"
end
# Execute rspec expectation within retrier
#
# @param [Proc] actual
# @param [Symbol] expectation_name
# @return [Boolean]
def wait_and_check(actual, expectation_name)
QA::Support::Retrier.retry_until(
max_attempts: @attempts,
max_duration: @duration,
sleep_interval: 0.5
) do
public_send(expectation_name, actual)
rescue RSpec::Expectations::ExpectationNotMetError, QA::Resource::ApiFabricator::ResourceNotFoundError
false
end
rescue QA::Support::Repeater::RetriesExceededError, QA::Support::Repeater::WaitExceededError => e
@e = e
false
end
# Execute rspec expectation
#
# @param [Proc] actual
# @return [void]
def default_expectation(actual)
expect(result(&actual)).to public_send(*expectation_args)
end
# Execute negated rspec expectation
#
# @param [Proc] actual
# @return [void]
def when_negated_expectation(actual)
expect(result(&actual)).not_to public_send(*expectation_args)
end
# Result of actual block
#
# @return [Object]
def result
@result = yield
end
# Error message placeholder to indicate waiter did not fail properly
# This message should not appear under normal circumstances since it should
# always be assigned from repeater
#
# @return [String]
def e
@e ||= 'Waiter did not fail!'
end
# Operator message
#
# @return [String]
def operator_msg
case operator
when 'eq' then 'equal'
else operator
end
end
# Expect operator
#
# @return [String]
def operator
@operator ||= name.to_s.match(/eventually_(.+?)$/).to_a[1].to_s
end
# Expectation args
#
# @return [String, Array]
def expectation_args
if operator.include?('truthy') || operator.include?('falsey') || operator.include?('empty')
operator
elsif operator == "include" && expected.is_a?(Array)
[operator, *expected]
else
[operator, expected]
end
end
end
end
end
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