497 lines
15 KiB
Ruby
497 lines
15 KiB
Ruby
require 'spec_helper'
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describe Gitlab::Database do
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before do
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stub_const('MigrationTest', Class.new { include Gitlab::Database })
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end
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describe '.config' do
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it 'returns a Hash' do
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expect(described_class.config).to be_an_instance_of(Hash)
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end
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end
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describe '.adapter_name' do
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it 'returns the name of the adapter' do
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expect(described_class.adapter_name).to be_an_instance_of(String)
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end
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end
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# These are just simple smoke tests to check if the methods work (regardless
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# of what they may return).
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describe '.mysql?' do
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subject { described_class.mysql? }
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it { is_expected.to satisfy { |val| val == true || val == false } }
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end
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describe '.postgresql?' do
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subject { described_class.postgresql? }
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it { is_expected.to satisfy { |val| val == true || val == false } }
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end
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describe '.version' do
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around do |example|
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described_class.instance_variable_set(:@version, nil)
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example.run
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described_class.instance_variable_set(:@version, nil)
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end
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context "on mysql" do
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it "extracts the version number" do
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allow(described_class).to receive(:database_version)
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.and_return("5.7.12-standard")
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expect(described_class.version).to eq '5.7.12-standard'
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end
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end
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context "on postgresql" do
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it "extracts the version number" do
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allow(described_class).to receive(:database_version)
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.and_return("PostgreSQL 9.4.4 on x86_64-apple-darwin14.3.0")
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expect(described_class.version).to eq '9.4.4'
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end
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end
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it 'memoizes the result' do
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count = ActiveRecord::QueryRecorder
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.new { 2.times { described_class.version } }
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.count
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expect(count).to eq(1)
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end
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end
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describe '.postgresql_9_or_less?' do
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it 'returns false when using MySQL' do
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allow(described_class).to receive(:postgresql?).and_return(false)
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expect(described_class.postgresql_9_or_less?).to eq(false)
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end
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it 'returns true when using PostgreSQL 9.6' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('9.6')
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expect(described_class.postgresql_9_or_less?).to eq(true)
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end
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it 'returns false when using PostgreSQL 10 or newer' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('10')
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expect(described_class.postgresql_9_or_less?).to eq(false)
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end
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end
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describe '.join_lateral_supported?' do
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it 'returns false when using MySQL' do
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allow(described_class).to receive(:postgresql?).and_return(false)
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expect(described_class.join_lateral_supported?).to eq(false)
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end
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it 'returns false when using PostgreSQL 9.2' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('9.2.1')
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expect(described_class.join_lateral_supported?).to eq(false)
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end
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it 'returns true when using PostgreSQL 9.3.0 or newer' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('9.3.0')
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expect(described_class.join_lateral_supported?).to eq(true)
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end
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end
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describe '.replication_slots_supported?' do
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it 'returns false when using MySQL' do
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allow(described_class).to receive(:postgresql?).and_return(false)
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expect(described_class.replication_slots_supported?).to eq(false)
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end
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it 'returns false when using PostgreSQL 9.3' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('9.3.1')
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expect(described_class.replication_slots_supported?).to eq(false)
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end
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it 'returns true when using PostgreSQL 9.4.0 or newer' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('9.4.0')
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expect(described_class.replication_slots_supported?).to eq(true)
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end
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end
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describe '.pg_wal_lsn_diff' do
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it 'returns old name when using PostgreSQL 9.6' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('9.6')
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expect(described_class.pg_wal_lsn_diff).to eq('pg_xlog_location_diff')
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end
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it 'returns new name when using PostgreSQL 10 or newer' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('10')
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expect(described_class.pg_wal_lsn_diff).to eq('pg_wal_lsn_diff')
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end
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end
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describe '.pg_current_wal_insert_lsn' do
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it 'returns old name when using PostgreSQL 9.6' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('9.6')
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expect(described_class.pg_current_wal_insert_lsn).to eq('pg_current_xlog_insert_location')
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end
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it 'returns new name when using PostgreSQL 10 or newer' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('10')
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expect(described_class.pg_current_wal_insert_lsn).to eq('pg_current_wal_insert_lsn')
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end
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end
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describe '.pg_last_wal_receive_lsn' do
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it 'returns old name when using PostgreSQL 9.6' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('9.6')
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expect(described_class.pg_last_wal_receive_lsn).to eq('pg_last_xlog_receive_location')
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end
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it 'returns new name when using PostgreSQL 10 or newer' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('10')
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expect(described_class.pg_last_wal_receive_lsn).to eq('pg_last_wal_receive_lsn')
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end
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end
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describe '.pg_last_wal_replay_lsn' do
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it 'returns old name when using PostgreSQL 9.6' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('9.6')
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expect(described_class.pg_last_wal_replay_lsn).to eq('pg_last_xlog_replay_location')
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end
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it 'returns new name when using PostgreSQL 10 or newer' do
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allow(described_class).to receive(:postgresql?).and_return(true)
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allow(described_class).to receive(:version).and_return('10')
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expect(described_class.pg_last_wal_replay_lsn).to eq('pg_last_wal_replay_lsn')
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end
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end
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describe '.nulls_last_order' do
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context 'when using PostgreSQL' do
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before do
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expect(described_class).to receive(:postgresql?).and_return(true)
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end
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it { expect(described_class.nulls_last_order('column', 'ASC')).to eq 'column ASC NULLS LAST'}
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it { expect(described_class.nulls_last_order('column', 'DESC')).to eq 'column DESC NULLS LAST'}
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end
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context 'when using MySQL' do
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before do
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expect(described_class).to receive(:postgresql?).and_return(false)
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end
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it { expect(described_class.nulls_last_order('column', 'ASC')).to eq 'column IS NULL, column ASC'}
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it { expect(described_class.nulls_last_order('column', 'DESC')).to eq 'column DESC'}
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end
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end
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describe '.nulls_first_order' do
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context 'when using PostgreSQL' do
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before do
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expect(described_class).to receive(:postgresql?).and_return(true)
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end
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it { expect(described_class.nulls_first_order('column', 'ASC')).to eq 'column ASC NULLS FIRST'}
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it { expect(described_class.nulls_first_order('column', 'DESC')).to eq 'column DESC NULLS FIRST'}
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end
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context 'when using MySQL' do
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before do
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expect(described_class).to receive(:postgresql?).and_return(false)
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end
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it { expect(described_class.nulls_first_order('column', 'ASC')).to eq 'column ASC'}
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it { expect(described_class.nulls_first_order('column', 'DESC')).to eq 'column IS NULL, column DESC'}
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end
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end
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describe '.with_connection_pool' do
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it 'creates a new connection pool and disconnect it after used' do
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closed_pool = nil
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described_class.with_connection_pool(1) do |pool|
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pool.with_connection do |connection|
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connection.execute('SELECT 1 AS value')
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end
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expect(pool).to be_connected
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closed_pool = pool
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end
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expect(closed_pool).not_to be_connected
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end
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it 'disconnects the pool even an exception was raised' do
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error = Class.new(RuntimeError)
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closed_pool = nil
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begin
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described_class.with_connection_pool(1) do |pool|
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pool.with_connection do |connection|
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connection.execute('SELECT 1 AS value')
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end
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closed_pool = pool
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raise error.new('boom')
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end
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rescue error
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end
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expect(closed_pool).not_to be_connected
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end
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end
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describe '.bulk_insert' do
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before do
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allow(described_class).to receive(:connection).and_return(connection)
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allow(connection).to receive(:quote_column_name, &:itself)
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allow(connection).to receive(:quote, &:itself)
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allow(connection).to receive(:execute)
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end
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let(:connection) { double(:connection) }
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let(:rows) do
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[
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{ a: 1, b: 2, c: 3 },
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{ c: 6, a: 4, b: 5 }
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]
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end
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it 'does nothing with empty rows' do
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expect(connection).not_to receive(:execute)
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described_class.bulk_insert('test', [])
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end
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it 'uses the ordering from the first row' do
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expect(connection).to receive(:execute) do |sql|
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expect(sql).to include('(1, 2, 3)')
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expect(sql).to include('(4, 5, 6)')
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end
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described_class.bulk_insert('test', rows)
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end
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it 'quotes column names' do
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expect(connection).to receive(:quote_column_name).with(:a)
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expect(connection).to receive(:quote_column_name).with(:b)
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expect(connection).to receive(:quote_column_name).with(:c)
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described_class.bulk_insert('test', rows)
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end
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it 'quotes values' do
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1.upto(6) do |i|
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expect(connection).to receive(:quote).with(i)
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end
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described_class.bulk_insert('test', rows)
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end
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it 'does not quote values of a column in the disable_quote option' do
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[1, 2, 4, 5].each do |i|
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expect(connection).to receive(:quote).with(i)
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end
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described_class.bulk_insert('test', rows, disable_quote: :c)
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end
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it 'does not quote values of columns in the disable_quote option' do
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[2, 5].each do |i|
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expect(connection).to receive(:quote).with(i)
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end
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described_class.bulk_insert('test', rows, disable_quote: [:a, :c])
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end
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it 'handles non-UTF-8 data' do
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expect { described_class.bulk_insert('test', [{ a: "\255" }]) }.not_to raise_error
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end
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context 'when using PostgreSQL' do
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before do
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allow(described_class).to receive(:mysql?).and_return(false)
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end
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it 'allows the returning of the IDs of the inserted rows' do
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result = double(:result, values: [['10']])
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expect(connection)
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.to receive(:execute)
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.with(/RETURNING id/)
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.and_return(result)
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ids = described_class
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.bulk_insert('test', [{ number: 10 }], return_ids: true)
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expect(ids).to eq([10])
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end
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end
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end
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describe '.create_connection_pool' do
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it 'creates a new connection pool with specific pool size' do
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pool = described_class.create_connection_pool(5)
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begin
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expect(pool)
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.to be_kind_of(ActiveRecord::ConnectionAdapters::ConnectionPool)
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expect(pool.spec.config[:pool]).to eq(5)
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ensure
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pool.disconnect!
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end
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end
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it 'allows setting of a custom hostname' do
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pool = described_class.create_connection_pool(5, '127.0.0.1')
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begin
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expect(pool.spec.config[:host]).to eq('127.0.0.1')
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ensure
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pool.disconnect!
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end
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end
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end
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describe '.cached_column_exists?' do
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it 'only retrieves data once' do
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expect(ActiveRecord::Base.connection).to receive(:columns).once.and_call_original
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2.times do
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expect(described_class.cached_column_exists?(:projects, :id)).to be_truthy
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expect(described_class.cached_column_exists?(:projects, :bogus_column)).to be_falsey
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end
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end
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end
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describe '.cached_table_exists?' do
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it 'only retrieves data once per table' do
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if Gitlab.rails5?
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expect(ActiveRecord::Base.connection).to receive(:data_source_exists?).with(:projects).once.and_call_original
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expect(ActiveRecord::Base.connection).to receive(:data_source_exists?).with(:bogus_table_name).once.and_call_original
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else
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expect(ActiveRecord::Base.connection).to receive(:table_exists?).with(:projects).once.and_call_original
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expect(ActiveRecord::Base.connection).to receive(:table_exists?).with(:bogus_table_name).once.and_call_original
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end
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2.times do
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expect(described_class.cached_table_exists?(:projects)).to be_truthy
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expect(described_class.cached_table_exists?(:bogus_table_name)).to be_falsey
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end
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end
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end
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describe '#true_value' do
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it 'returns correct value for PostgreSQL' do
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expect(described_class).to receive(:postgresql?).and_return(true)
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expect(described_class.true_value).to eq "'t'"
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end
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it 'returns correct value for MySQL' do
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expect(described_class).to receive(:postgresql?).and_return(false)
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expect(described_class.true_value).to eq 1
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end
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end
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describe '#false_value' do
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it 'returns correct value for PostgreSQL' do
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expect(described_class).to receive(:postgresql?).and_return(true)
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expect(described_class.false_value).to eq "'f'"
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end
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it 'returns correct value for MySQL' do
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expect(described_class).to receive(:postgresql?).and_return(false)
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expect(described_class.false_value).to eq 0
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end
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end
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describe '.db_read_only?' do
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context 'when using PostgreSQL' do
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before do
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allow(ActiveRecord::Base.connection).to receive(:execute).and_call_original
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expect(described_class).to receive(:postgresql?).and_return(true)
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end
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it 'detects a read only database' do
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allow(ActiveRecord::Base.connection).to receive(:execute).with('SELECT pg_is_in_recovery()').and_return([{ "pg_is_in_recovery" => "t" }])
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expect(described_class.db_read_only?).to be_truthy
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end
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it 'detects a read write database' do
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allow(ActiveRecord::Base.connection).to receive(:execute).with('SELECT pg_is_in_recovery()').and_return([{ "pg_is_in_recovery" => "f" }])
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expect(described_class.db_read_only?).to be_falsey
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end
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end
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context 'when using MySQL' do
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before do
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expect(described_class).to receive(:postgresql?).and_return(false)
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end
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it { expect(described_class.db_read_only?).to be_falsey }
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end
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end
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describe '#sanitize_timestamp' do
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let(:max_timestamp) { Time.at((1 << 31) - 1) }
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subject { described_class.sanitize_timestamp(timestamp) }
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context 'with a timestamp smaller than MAX_TIMESTAMP_VALUE' do
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let(:timestamp) { max_timestamp - 10.years }
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it 'returns the given timestamp' do
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expect(subject).to eq(timestamp)
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end
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end
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context 'with a timestamp larger than MAX_TIMESTAMP_VALUE' do
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let(:timestamp) { max_timestamp + 1.second }
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it 'returns MAX_TIMESTAMP_VALUE' do
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expect(subject).to eq(max_timestamp)
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end
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end
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end
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end
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