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require_relative "spec_helper"
describe "prepared_statements plugin" do
before do
@db = Sequel.mock(:fetch=>{:id=>1, :name=>'foo', :i=>2}, :autoid=>proc{|sql| 1}, :numrows=>1, :servers=>{:read_only=>{}})
@c = Class.new(Sequel::Model(@db[:people]))
@c.columns :id, :name, :i
@c.set_primary_key :id
@columns = "id, name, i"
@c.plugin :prepared_statements
@p = @c.load(:id=>1, :name=>'foo', :i=>2)
@ds = @c.dataset
@db.sqls
end
it "should work with implicit subqueries used for joined datasets" do
@c.dataset = @c.dataset.from(:people, :people2)
@db.sqls
@c[1].must_equal @p
@db.sqls.must_equal ["SELECT * FROM (SELECT * FROM people, people2) AS people WHERE (id = 1) LIMIT 1 -- read_only"]
end
it "should correctly lookup by primary key for dataset using subquery" do
@c.dataset = @c.dataset.from(:people, :people2).from_self(:alias=>:people)
@db.sqls
@c[1].must_equal @p
@db.sqls.must_equal ["SELECT * FROM (SELECT * FROM people, people2) AS people WHERE (id = 1) LIMIT 1 -- read_only"]
end
it "should use prepared statements for pk lookups only if default is not optimized" do
@c.send(:use_prepared_statements_for_pk_lookup?).must_equal false
@c.set_primary_key [:id, :name]
@c.send(:use_prepared_statements_for_pk_lookup?).must_equal true
@c.set_primary_key :id
@c.dataset = @c.dataset.from(:people, :people2)
@c.send(:use_prepared_statements_for_pk_lookup?).must_equal true
@c.dataset = @db[:people].select(:id, :name, :i)
@c.send(:use_prepared_statements_for_pk_lookup?).must_equal true
end
it "should raise Error for unsupported prepared statement types" do
proc{@p.send(:use_prepared_statements_for?, :foo)}.must_raise Sequel::Error
end
it "should not use prepared statements for insert_select on SQLite" do
@p.send(:use_prepared_statements_for?, :insert_select).must_equal true
@c.dataset = Sequel.connect('mock://sqlite')[:people]
@p.send(:use_prepared_statements_for?, :insert_select).must_equal false
end
prepared_statements_spec = Module.new do
extend Minitest::Spec::DSL
it "should correctly update instance" do
@p.update(:name=>'bar').must_equal @c.load(:id=>1, :name=>'bar', :i => 2)
@db.sqls.must_equal ["UPDATE people SET name = 'bar' WHERE (id = 1)"]
end
it "should correctly create instance if dataset supports insert_select" do
@c.dataset_module do
def supports_insert_select?
true
end
def supports_returning?(type)
true
end
def insert_select(h)
cache_set(:_fetch, :id=>1, :name=>'foo', :i => 2)
server(:default).with_sql_first(insert_select_sql(h))
end
def insert_select_sql(*v)
insert_sql(*v) << " RETURNING #{(opts[:returning] && !opts[:returning].empty?) ? opts[:returning].map{|c| literal(c)}.join(', ') : '*'}"
end
end
@c.create(:name=>'foo').must_equal @c.load(:id=>1, :name=>'foo', :i => 2)
@db.sqls.must_equal ["INSERT INTO people (name) VALUES ('foo') RETURNING #{@columns}"]
c = Class.new(@c)
c.dataset = c.dataset.returning(:id, :name)
c.columns :id, :name, :i
@db.sqls
c.create(:name=>'foo').must_equal c.load(:id=>1, :name=>'foo', :i => 2)
@db.sqls.must_equal ["INSERT INTO people (name) VALUES ('foo') RETURNING id, name"]
end
end
describe "when #use_prepared_statements_for? returns true" do
before do
@c.class_eval do
def self.use_prepared_statements_for_pk_lookup?; true end
singleton_class.send(:private, :use_prepared_statements_for_pk_lookup?)
private
def use_prepared_statements_for?(type) true end
end
end
include prepared_statements_spec
it "should correctly create instance" do
@c.create(:name=>'foo').must_equal @c.load(:id=>1, :name=>'foo', :i => 2)
@db.sqls.must_equal ["INSERT INTO people (name) VALUES ('foo')", "SELECT * FROM people WHERE id = 1"]
end
it "should correctly create instance" do
@c.create(:name=>'foo').must_equal @c.load(:id=>1, :name=>'foo', :i => 2)
@db.sqls.must_equal ["INSERT INTO people (name) VALUES ('foo')", "SELECT * FROM people WHERE id = 1"]
end
it "should correctly update instance when specifying server" do
@p.set_server(:read_only).update(:name=>'bar').must_equal @c.load(:id=>1, :name=>'bar', :i => 2)
@db.sqls.must_equal ["UPDATE people SET name = 'bar' WHERE (id = 1) -- read_only"]
end
it "should correctly create instance when specifying server" do
@c.new(:name=>'foo').set_server(:read_only).save.must_equal @c.load(:id=>1, :name=>'foo', :i => 2)
@db.sqls.must_equal ["INSERT INTO people (name) VALUES ('foo') -- read_only", "SELECT * FROM people WHERE id = 1 -- read_only"]
end
it "should correctly create instance if dataset supports insert_select when specifying server" do
@c.dataset_module do
def supports_insert_select?
true
end
def supports_returning?(type)
true
end
def insert_select(h)
cache_set(:_fetch, :id=>1, :name=>'foo', :i => 2)
server(:default).with_sql_first(insert_select_sql(h))
end
def insert_select_sql(*v)
insert_sql(*v) << " RETURNING #{(opts[:returning] && !opts[:returning].empty?) ? opts[:returning].map{|c| literal(c)}.join(', ') : '*'}"
end
end
@c.new(:name=>'foo').set_server(:read_only).save.must_equal @c.load(:id=>1, :name=>'foo', :i => 2)
@db.sqls.must_equal ["INSERT INTO people (name) VALUES ('foo') RETURNING #{@columns} -- read_only"]
end
it "should work correctly when subclassing" do
c = Class.new(@c)
@db.sqls
c.load(:id=>1, :name=>'foo', :i=>2).save
@db.sqls.must_equal ["UPDATE people SET name = 'foo', i = 2 WHERE (id = 1)"]
end
it "should correctly handle without schema type when placeholder type specifiers are required" do
@c.dataset = @ds.with_extend{def requires_placeholder_type_specifiers?; true end}
@p.save
@db.sqls.must_equal ["UPDATE people SET name = 'foo', i = 2 WHERE (id = 1)"]
end
it "should correctly handle with schema type when placeholder type specifiers are required" do
@c.dataset = @ds.with_extend do
def requires_placeholder_type_specifiers?; true end
private
def prepared_statement_modules
[Module.new do
def literal_symbol_append(sql, v)
if @opts[:bind_vars] && /\A\$(.*)\z/ =~ v
literal_append(sql, prepared_arg($1.split('__')[0].to_sym))
else
super
end
end
end]
end
end
@c.db_schema[:id][:type] = :integer
@p.save
@db.sqls.must_equal ["UPDATE people SET name = 'foo', i = 2 WHERE (id = 1)"]
end
end
describe "when #use_prepared_statements_for? returns false" do
before do
@columns = "*"
@c.class_eval do
def self.use_prepared_statements_for_pk_lookup?; false end
singleton_class.send(:private, :use_prepared_statements_for_pk_lookup?)
private
def use_prepared_statements_for?(type) false end
end
end
include prepared_statements_spec
it "should correctly create instance" do
@c.create(:name=>'foo').must_equal @c.load(:id=>1, :name=>'foo', :i => 2)
@db.sqls.must_equal ["INSERT INTO people (name) VALUES ('foo')", "SELECT #{@columns} FROM people WHERE id = 1"]
end
it "should correctly lookup by primary key" do
@c[1].must_equal @p
@db.sqls.must_equal ["SELECT * FROM people WHERE id = 1 -- read_only"]
end
it "should correctly delete instance" do
@p.destroy.must_equal @p
@db.sqls.must_equal ["DELETE FROM people WHERE id = 1"]
end
end
end
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