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require 'spec_helper'
module Arel
describe Table do
before do
@relation = Table.new(:users)
end
describe 'new' do
it 'should accept an engine' do
rel = Table.new :users, 'foo'
rel.engine.should == 'foo'
end
it 'should accept a hash' do
rel = Table.new :users, :engine => 'foo'
rel.engine.should == 'foo'
end
end
describe 'where' do
it "returns a tree manager" do
manager = @relation.where @relation[:id].eq 1
manager.project @relation[:id]
manager.should be_kind_of TreeManager
manager.to_sql.should == %{
SELECT "users"."id"
FROM "users"
WHERE "users"."id" = 1
}.gsub("\n", '').gsub(/(^\s*|\s*$)/, '').squeeze(' ')
end
end
describe 'columns' do
it 'returns a list of columns' do
columns = @relation.columns
columns.length.should == 2
columns.map { |x| x.name }.sort.should == %w{ name id }.sort
end
end
it "should have a name" do
@relation.name.should == :users
end
it "should have an engine" do
@relation.engine.should == Table.engine
end
describe '[]' do
describe 'when given a', Symbol do
it "manufactures an attribute if the symbol names an attribute within the relation" do
column = @relation[:id]
column.name.should == 'id'
column.should be_kind_of Attributes::Integer
end
end
### FIXME: this seems like a bad requirement.
#describe 'when given an', Attribute do
# it "returns the attribute if the attribute is within the relation" do
# @relation[@relation[:id]].should == @relation[:id]
# end
# it "returns nil if the attribtue is not within the relation" do
# another_relation = Table.new(:photos)
# @relation[another_relation[:id]].should be_nil
# end
#end
#describe 'when given an', Expression do
# before do
# @expression = @relation[:id].count
# end
# it "returns the Expression if the Expression is within the relation" do
# @relation[@expression].should be_nil
# end
#end
end
end
end
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