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require 'spec_helper'
module Arel
describe Table do
before do
@relation = Table.new(:users)
end
describe '#to_sql' do
it "manufactures a simple select query" do
sql = @relation.to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `users`.`id`, `users`.`name`
FROM `users`
})
end
adapter_is :oracle do
sql.should be_like(%Q{
SELECT "USERS"."ID", "USERS"."NAME"
FROM "USERS"
})
end
adapter_is_not :mysql, :oracle do
sql.should be_like(%Q{
SELECT "users"."id", "users"."name"
FROM "users"
})
end
end
end
describe '#as' do
it "manufactures a simple select query using aliases" do
sql = @relation.as(:super_users).to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `super_users`.`id`, `super_users`.`name`
FROM `users` AS `super_users`
})
end
adapter_is :oracle do
sql.should be_like(%Q{
SELECT "SUPER_USERS"."ID", "SUPER_USERS"."NAME"
FROM "USERS" "SUPER_USERS"
})
end
adapter_is_not :mysql, :oracle do
sql.should be_like(%Q{
SELECT "super_users"."id", "super_users"."name"
FROM "users" AS "super_users"
})
end
end
it "does not apply alias if it's same as the table name" do
sql = @relation.as(:users).to_sql
adapter_is :mysql do
sql.should be_like(%Q{
SELECT `users`.`id`, `users`.`name`
FROM `users`
})
end
adapter_is :oracle do
sql.should be_like(%Q{
SELECT "USERS"."ID", "USERS"."NAME"
FROM "USERS"
})
end
adapter_is_not :mysql, :oracle do
sql.should be_like(%Q{
SELECT "users"."id", "users"."name"
FROM "users"
})
end
end
end
describe '#column_for' do
it "returns the column corresponding to the attribute" do
@relation.column_for(@relation[:id]).should == @relation.columns.detect { |c| c.name == 'id' }
end
end
describe '#attributes' do
it 'manufactures attributes corresponding to columns in the table' do
@relation.attributes.should == [
Attribute.new(@relation, :id),
Attribute.new(@relation, :name)
]
end
describe '#reset' do
it "reloads columns from the database" do
lambda { @relation.engine.stub!(:columns => []) }.should_not change { @relation.attributes }
lambda { @relation.reset }.should change { @relation.attributes }
end
end
end
describe 'hashing' do
it "implements hash equality" do
Table.new(:users).should hash_the_same_as(Table.new(:users))
Table.new(:users).should_not hash_the_same_as(Table.new(:photos))
end
end
describe '#engine' do
it "defaults to global engine" do
Table.engine = engine = Sql::Engine.new
Table.new(:users).engine.should == engine
end
it "can be specified" do
Table.new(:users, engine = Sql::Engine.new).engine.should == engine
end
end
end
end
|
