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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe ApplicationRecord do
describe '#id_in' do
let(:records) { create_list(:user, 3) }
it 'returns records of the ids' do
expect(User.id_in(records.last(2).map(&:id))).to eq(records.last(2))
end
end
describe '.safe_ensure_unique' do
let(:model) { build(:suggestion) }
let(:klass) { model.class }
before do
allow(model).to receive(:save).and_raise(ActiveRecord::RecordNotUnique)
end
it 'returns false when ActiveRecord::RecordNotUnique is raised' do
expect(model).to receive(:save).once
expect(klass.safe_ensure_unique { model.save }).to be_falsey
end
it 'retries based on retry count specified' do
expect(model).to receive(:save).exactly(3).times
expect(klass.safe_ensure_unique(retries: 2) { model.save }).to be_falsey
end
end
context 'safe find or create methods' do
let_it_be(:note) { create(:diff_note_on_merge_request) }
let(:suggestion_attributes) { attributes_for(:suggestion).merge!(note_id: note.id) }
describe '.safe_find_or_create_by' do
it 'creates the suggestion avoiding race conditions' do
expect(Suggestion).to receive(:find_or_create_by).and_raise(ActiveRecord::RecordNotUnique)
allow(Suggestion).to receive(:find_or_create_by).and_call_original
expect { Suggestion.safe_find_or_create_by(suggestion_attributes) }
.to change { Suggestion.count }.by(1)
end
it 'passes a block to find_or_create_by' do
expect do |block|
Suggestion.safe_find_or_create_by(suggestion_attributes, &block)
end.to yield_with_args(an_object_having_attributes(suggestion_attributes))
end
it 'does not create a record when is not valid' do
raw_usage_data = RawUsageData.safe_find_or_create_by({ recorded_at: nil })
expect(raw_usage_data.id).to be_nil
expect(raw_usage_data).not_to be_valid
end
end
describe '.safe_find_or_create_by!' do
it 'creates a record using safe_find_or_create_by' do
expect(Suggestion).to receive(:find_or_create_by).and_call_original
expect(Suggestion.safe_find_or_create_by!(suggestion_attributes))
.to be_a(Suggestion)
end
it 'raises a validation error if the record was not persisted' do
expect { Suggestion.safe_find_or_create_by!(note: nil) }
.to raise_error(ActiveRecord::RecordInvalid)
end
it 'passes a block to find_or_create_by' do
expect do |block|
Suggestion.safe_find_or_create_by!(suggestion_attributes, &block)
end.to yield_with_args(an_object_having_attributes(suggestion_attributes))
end
it 'raises a record not found error in case of attributes mismatch' do
suggestion = Suggestion.safe_find_or_create_by!(suggestion_attributes)
attributes = suggestion_attributes.merge(outdated: !suggestion.outdated)
expect { Suggestion.safe_find_or_create_by!(attributes) }
.to raise_error(ActiveRecord::RecordNotFound)
end
end
end
describe '.underscore' do
it 'returns the underscored value of the class as a string' do
expect(MergeRequest.underscore).to eq('merge_request')
end
end
describe '.where_exists' do
it 'produces a WHERE EXISTS query' do
user = create(:user)
expect(User.where_exists(User.limit(1))).to eq([user])
end
end
describe '.with_fast_read_statement_timeout' do
context 'when the query runs faster than configured timeout' do
it 'executes the query without error' do
result = nil
expect do
described_class.with_fast_read_statement_timeout(100) do
result = described_class.connection.exec_query('SELECT 1')
end
end.not_to raise_error
expect(result).not_to be_nil
end
end
# This query hangs for 10ms and then gets cancelled. As there is no
# other way to test the timeout for sure, 10ms of waiting seems to be
# reasonable!
context 'when the query runs longer than configured timeout' do
it 'cancels the query and raises an exception' do
expect do
described_class.with_fast_read_statement_timeout(10) do
described_class.connection.exec_query('SELECT pg_sleep(0.1)')
end
end.to raise_error(ActiveRecord::QueryCanceled)
end
end
end
end
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