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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Database::SchemaCacheWithRenamedTable do
let(:old_model) do
Class.new(ActiveRecord::Base) do
self.table_name = 'projects'
end
end
let(:new_model) do
Class.new(ActiveRecord::Base) do
self.table_name = '_test_projects_new'
end
end
before do
stub_const('Gitlab::Database::TABLES_TO_BE_RENAMED', { 'projects' => '_test_projects_new' })
end
context 'when table is not renamed yet' do
before do
old_model.reset_column_information
ActiveRecord::Base.connection.schema_cache.clear!
end
it 'uses the original table to look up metadata' do
expect(old_model.primary_key).to eq('id')
end
end
context 'when table is renamed' do
before do
ActiveRecord::Base.connection.execute("ALTER TABLE projects RENAME TO _test_projects_new")
ActiveRecord::Base.connection.execute("CREATE VIEW projects AS SELECT * FROM _test_projects_new")
old_model.reset_column_information
ActiveRecord::Base.connection.schema_cache.clear!
end
it 'uses the renamed table to look up metadata' do
expect(old_model.primary_key).to eq('id')
end
it 'has primary key' do
expect(old_model.primary_key).to eq('id')
expect(old_model.primary_key).to eq(new_model.primary_key)
end
it 'has the same column definitions' do
expect(old_model.columns).to eq(new_model.columns)
end
it 'has the same indexes' do
indexes_for_old_table = ActiveRecord::Base.connection.schema_cache.indexes('projects')
indexes_for_new_table = ActiveRecord::Base.connection.schema_cache.indexes('_test_projects_new')
expect(indexes_for_old_table).to eq(indexes_for_new_table)
end
it 'has the same column_hash' do
columns_hash_for_old_table = ActiveRecord::Base.connection.schema_cache.columns_hash('projects')
columns_hash_for_new_table = ActiveRecord::Base.connection.schema_cache.columns_hash('_test_projects_new')
expect(columns_hash_for_old_table).to eq(columns_hash_for_new_table)
end
describe 'when the table behind a model is actually a view' do
let(:group) { create(:group) }
let(:attrs) { attributes_for(:project, namespace_id: group.id, project_namespace_id: group.id).except(:creator) }
let(:record) { old_model.create!(attrs) }
it 'can persist records' do
expect(record.reload.attributes).to eq(new_model.find(record.id).attributes)
end
it 'can find records' do
expect(old_model.find_by_id(record.id)).not_to be_nil
end
end
end
end
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