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|
# frozen_string_literal: true
require 'tempfile'
require 'fileutils'
require_relative '../../../../tooling/lib/tooling/predictive_tests'
require_relative '../../../support/helpers/stub_env'
RSpec.describe Tooling::PredictiveTests, feature_category: :tooling do
include StubENV
let(:instance) { described_class.new }
let(:matching_tests_initial_content) { 'initial_matching_spec' }
let(:fixtures_mapping_content) { '{}' }
attr_accessor :changed_files, :changed_files_path, :fixtures_mapping,
:matching_js_files, :matching_tests, :views_with_partials
around do |example|
self.changed_files = Tempfile.new('test-folder/changed_files.txt')
self.changed_files_path = changed_files.path
self.fixtures_mapping = Tempfile.new('test-folder/fixtures_mapping.txt')
self.matching_js_files = Tempfile.new('test-folder/matching_js_files.txt')
self.matching_tests = Tempfile.new('test-folder/matching_tests.txt')
self.views_with_partials = Tempfile.new('test-folder/views_with_partials.txt')
# See https://ruby-doc.org/stdlib-1.9.3/libdoc/tempfile/rdoc/
# Tempfile.html#class-Tempfile-label-Explicit+close
begin
# In practice, we let PredictiveTests create the file, and we just
# use its file name.
changed_files.close
changed_files.unlink
example.run
ensure
# Since example.run can create the file again, let's remove it again
FileUtils.rm_f(changed_files_path)
fixtures_mapping.close
fixtures_mapping.unlink
matching_js_files.close
matching_js_files.unlink
matching_tests.close
matching_tests.unlink
views_with_partials.close
views_with_partials.unlink
end
end
before do
stub_env(
'RSPEC_CHANGED_FILES_PATH' => changed_files_path,
'RSPEC_MATCHING_TESTS_PATH' => matching_tests.path,
'RSPEC_VIEWS_INCLUDING_PARTIALS_PATH' => views_with_partials.path,
'FRONTEND_FIXTURES_MAPPING_PATH' => fixtures_mapping.path,
'RSPEC_MATCHING_JS_FILES_PATH' => matching_js_files.path,
'RSPEC_TESTS_MAPPING_ENABLED' => "false",
'RSPEC_TESTS_MAPPING_PATH' => '/tmp/does-not-exist.out'
)
# We write some data to later on verify that we only append to this file.
File.write(matching_tests.path, matching_tests_initial_content)
File.write(fixtures_mapping.path, fixtures_mapping_content)
allow(Gitlab).to receive(:configure)
end
describe '#execute' do
subject { instance.execute }
context 'when ENV variables are missing' do
before do
stub_env(
'RSPEC_CHANGED_FILES_PATH' => '',
'FRONTEND_FIXTURES_MAPPING_PATH' => ''
)
end
it 'raises an error' do
expect { subject }.to raise_error(
'[predictive tests] Missing ENV variable(s): RSPEC_CHANGED_FILES_PATH,FRONTEND_FIXTURES_MAPPING_PATH.'
)
end
end
context 'when all ENV variables are provided' do
before do
change = double('GitLab::Change') # rubocop:disable RSpec/VerifiedDoubles
allow(change).to receive_message_chain(:to_h, :values_at)
.and_return([changed_files_content, changed_files_content])
allow(Gitlab).to receive_message_chain(:merge_request_changes, :changes)
.and_return([change])
end
context 'when no files were changed' do
let(:changed_files_content) { '' }
it 'does not change files other than RSPEC_CHANGED_FILES_PATH' do
expect { subject }.not_to change { File.read(matching_tests.path) }
expect { subject }.not_to change { File.read(views_with_partials.path) }
expect { subject }.not_to change { File.read(fixtures_mapping.path) }
expect { subject }.not_to change { File.read(matching_js_files.path) }
end
end
context 'when some files used for frontend fixtures were changed' do
let(:changed_files_content) { 'app/models/todo.rb' }
let(:changed_files_matching_test) { 'spec/models/todo_spec.rb' }
let(:matching_frontend_fixture) { 'tmp/tests/frontend/fixtures-ee/todos/todos.html' }
let(:fixtures_mapping_content) do
JSON.dump(changed_files_matching_test => [matching_frontend_fixture]) # rubocop:disable Gitlab/Json
end
it 'writes to RSPEC_CHANGED_FILES_PATH with API contents and appends with matching fixtures' do
subject
expect(File.read(changed_files_path)).to eq("#{changed_files_content} #{matching_frontend_fixture}")
end
it 'appends the spec file to RSPEC_MATCHING_TESTS_PATH' do
expect { subject }.to change { File.read(matching_tests.path) }
.from(matching_tests_initial_content)
.to("#{matching_tests_initial_content} #{changed_files_matching_test}")
end
it 'does not change files other than RSPEC_CHANGED_FILES_PATH nor RSPEC_MATCHING_TESTS_PATH' do
expect { subject }.not_to change { File.read(views_with_partials.path) }
expect { subject }.not_to change { File.read(fixtures_mapping.path) }
expect { subject }.not_to change { File.read(matching_js_files.path) }
end
end
end
end
end
|
