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|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Shard do
describe '.populate!' do
it 'creates shards based on the config file' do
expect(described_class.all).to be_empty
stub_storage_settings(foo: {}, bar: {}, baz: {})
described_class.populate!
expect(described_class.all.map(&:name)).to match_array(%w[default foo bar baz])
end
end
describe '.by_name' do
let(:default_shard) { described_class.find_by(name: 'default') }
before do
described_class.populate!
end
it 'returns an existing shard' do
expect(described_class.by_name('default')).to eq(default_shard)
end
it 'creates a new shard' do
result = described_class.by_name('foo')
expect(result).not_to eq(default_shard)
expect(result.name).to eq('foo')
end
it 'returns existing record if creation races' do
shard_created_by_others = double(described_class)
expect(described_class)
.to receive(:find_by)
.with({ name: 'new_shard' })
.and_return(nil, shard_created_by_others)
expect(described_class)
.to receive(:create)
.with({ name: 'new_shard' })
.and_raise(ActiveRecord::RecordNotUnique, 'fail')
.once
expect(described_class.by_name('new_shard')).to eq(shard_created_by_others)
end
end
end
|
