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require 'spec_helper'
class MigrationTest
include Gitlab::Database
end
describe Gitlab::Database, lib: true do
describe '.adapter_name' do
it 'returns the name of the adapter' do
expect(described_class.adapter_name).to be_an_instance_of(String)
end
end
# These are just simple smoke tests to check if the methods work (regardless
# of what they may return).
describe '.mysql?' do
subject { described_class.mysql? }
it { is_expected.to satisfy { |val| val == true || val == false } }
end
describe '.postgresql?' do
subject { described_class.postgresql? }
it { is_expected.to satisfy { |val| val == true || val == false } }
end
describe '.version' do
context "on mysql" do
it "extracts the version number" do
allow(described_class).to receive(:database_version).
and_return("5.7.12-standard")
expect(described_class.version).to eq '5.7.12-standard'
end
end
context "on postgresql" do
it "extracts the version number" do
allow(described_class).to receive(:database_version).
and_return("PostgreSQL 9.4.4 on x86_64-apple-darwin14.3.0")
expect(described_class.version).to eq '9.4.4'
end
end
end
describe '.nulls_last_order' do
context 'when using PostgreSQL' do
before { expect(described_class).to receive(:postgresql?).and_return(true) }
it { expect(described_class.nulls_last_order('column', 'ASC')).to eq 'column ASC NULLS LAST'}
it { expect(described_class.nulls_last_order('column', 'DESC')).to eq 'column DESC NULLS LAST'}
end
context 'when using MySQL' do
before { expect(described_class).to receive(:postgresql?).and_return(false) }
it { expect(described_class.nulls_last_order('column', 'ASC')).to eq 'column IS NULL, column ASC'}
it { expect(described_class.nulls_last_order('column', 'DESC')).to eq 'column DESC'}
end
end
describe '.nulls_first_order' do
context 'when using PostgreSQL' do
before { expect(described_class).to receive(:postgresql?).and_return(true) }
it { expect(described_class.nulls_first_order('column', 'ASC')).to eq 'column ASC NULLS FIRST'}
it { expect(described_class.nulls_first_order('column', 'DESC')).to eq 'column DESC NULLS FIRST'}
end
context 'when using MySQL' do
before { expect(described_class).to receive(:postgresql?).and_return(false) }
it { expect(described_class.nulls_first_order('column', 'ASC')).to eq 'column ASC'}
it { expect(described_class.nulls_first_order('column', 'DESC')).to eq 'column IS NULL, column DESC'}
end
end
describe '.with_connection_pool' do
it 'creates a new connection pool and disconnect it after used' do
closed_pool = nil
described_class.with_connection_pool(1) do |pool|
pool.with_connection do |connection|
connection.execute('SELECT 1 AS value')
end
expect(pool).to be_connected
closed_pool = pool
end
expect(closed_pool).not_to be_connected
end
it 'disconnects the pool even an exception was raised' do
error = Class.new(RuntimeError)
closed_pool = nil
begin
described_class.with_connection_pool(1) do |pool|
pool.with_connection do |connection|
connection.execute('SELECT 1 AS value')
end
closed_pool = pool
raise error.new('boom')
end
rescue error
end
expect(closed_pool).not_to be_connected
end
end
describe '.create_connection_pool' do
it 'creates a new connection pool with specific pool size' do
pool = described_class.create_connection_pool(5)
begin
expect(pool)
.to be_kind_of(ActiveRecord::ConnectionAdapters::ConnectionPool)
expect(pool.spec.config[:pool]).to eq(5)
ensure
pool.disconnect!
end
end
it 'allows setting of a custom hostname' do
pool = described_class.create_connection_pool(5, '127.0.0.1')
begin
expect(pool.spec.config[:host]).to eq('127.0.0.1')
ensure
pool.disconnect!
end
end
end
describe '#true_value' do
it 'returns correct value for PostgreSQL' do
expect(described_class).to receive(:postgresql?).and_return(true)
expect(MigrationTest.new.true_value).to eq "'t'"
end
it 'returns correct value for MySQL' do
expect(described_class).to receive(:postgresql?).and_return(false)
expect(MigrationTest.new.true_value).to eq 1
end
end
describe '#false_value' do
it 'returns correct value for PostgreSQL' do
expect(described_class).to receive(:postgresql?).and_return(true)
expect(MigrationTest.new.false_value).to eq "'f'"
end
it 'returns correct value for MySQL' do
expect(described_class).to receive(:postgresql?).and_return(false)
expect(MigrationTest.new.false_value).to eq 0
end
end
end
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