shuffling around the spec directory

1 files changed, 559 insertions, 0 deletions

diff --git a/spec/select_manager_spec.rb b/spec/select_manager_spec.rb
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+++ b/spec/select_manager_spec.rb
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+require 'spec_helper'
+
+module Arel
+  class EngineProxy
+    attr_reader :executed
+    attr_reader :connection_pool
+    attr_reader :spec
+    attr_reader :config
+
+    def initialize engine
+      @engine = engine
+      @executed = []
+      @connection_pool = self
+      @spec = self
+      @config = { :adapter => 'sqlite3' }
+    end
+
+    def with_connection
+      yield self
+    end
+
+    def connection
+      self
+    end
+
+    def quote_table_name thing; @engine.connection.quote_table_name thing end
+    def quote_column_name thing; @engine.connection.quote_column_name thing end
+    def quote thing, column; @engine.connection.quote thing, column end
+
+    def execute sql, name = nil
+      @executed << sql
+    end
+    alias :update :execute
+    alias :delete :execute
+    alias :insert :execute
+  end
+
+  describe 'select manager' do
+    describe 'backwards compatibility' do
+      describe 'order' do
+        it 'accepts symbols' do
+          table   = Table.new :users
+          manager = Arel::SelectManager.new Table.engine
+          manager.project SqlLiteral.new '*'
+          manager.from table
+          manager.order :foo
+          manager.to_sql.should be_like %{
+          SELECT * FROM "users" ORDER BY foo
+          }
+        end
+      end
+
+      describe 'group' do
+        it 'takes a symbol' do
+          table   = Table.new :users
+          manager = Arel::SelectManager.new Table.engine
+          manager.from table
+          manager.group :foo
+          manager.to_sql.should be_like %{
+          SELECT FROM "users" GROUP BY foo
+          }
+        end
+      end
+
+      describe 'from' do
+        it 'ignores strings when table of same name exists' do
+          table   = Table.new :users
+          manager = Arel::SelectManager.new Table.engine
+
+          manager.from table
+          manager.from 'users'
+          manager.project table['id']
+          manager.to_sql.should be_like 'SELECT "users"."id" FROM users'
+        end
+      end
+
+      describe '#having' do
+        it 'converts strings to SQLLiterals' do
+          table   = Table.new :users
+          mgr = table.from table
+          mgr.having 'foo'
+          mgr.to_sql.should be_like %{ SELECT FROM "users" HAVING foo }
+        end
+      end
+    end
+
+    describe 'clone' do
+      it 'creates new cores' do
+        table   = Table.new :users, :engine => Table.engine, :as => 'foo'
+        mgr = table.from table
+        m2 = mgr.clone
+        m2.project "foo"
+
+        check mgr.to_sql.should_not == m2.to_sql
+      end
+    end
+
+    describe 'initialize' do
+      it 'uses alias in sql' do
+        table   = Table.new :users, :engine => Table.engine, :as => 'foo'
+        mgr = table.from table
+        mgr.skip 10
+        mgr.to_sql.should be_like %{ SELECT FROM "users" "foo" OFFSET 10 }
+      end
+    end
+
+    describe 'skip' do
+      it 'should add an offset' do
+        table   = Table.new :users
+        mgr = table.from table
+        mgr.skip 10
+        mgr.to_sql.should be_like %{ SELECT FROM "users" OFFSET 10 }
+      end
+
+      it 'should chain' do
+        table   = Table.new :users
+        mgr = table.from table
+        mgr.skip(10).to_sql.should be_like %{ SELECT FROM "users" OFFSET 10 }
+      end
+    end
+
+    describe 'taken' do
+      it 'should return limit' do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.take 10
+        check manager.taken.should == 10
+      end
+    end
+
+    describe 'insert' do
+      it 'uses the select FROM' do
+        engine  = EngineProxy.new Table.engine
+        table   = Table.new :users
+        manager = Arel::SelectManager.new engine
+        manager.from table
+        manager.insert 'VALUES(NULL)'
+
+        engine.executed.last.should be_like %{
+          INSERT INTO "users" VALUES(NULL)
+        }
+      end
+    end
+
+    describe 'lock' do
+      # This should fail on other databases
+      it 'adds a lock node' do
+        table   = Table.new :users
+        mgr = table.from table
+        mgr.lock.to_sql.should be_like %{ SELECT FROM "users" }
+      end
+    end
+
+    describe 'orders' do
+      it 'returns order clauses' do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        order = table[:id]
+        manager.order table[:id]
+        check manager.orders.should == [order]
+      end
+    end
+
+    describe 'order' do
+      it 'generates order clauses' do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.project SqlLiteral.new '*'
+        manager.from table
+        manager.order table[:id]
+        manager.to_sql.should be_like %{
+          SELECT * FROM "users" ORDER BY "users"."id"
+        }
+      end
+
+      # FIXME: I would like to deprecate this
+      it 'takes *args' do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.project SqlLiteral.new '*'
+        manager.from table
+        manager.order table[:id], table[:name]
+        manager.to_sql.should be_like %{
+          SELECT * FROM "users" ORDER BY "users"."id", "users"."name"
+        }
+      end
+
+      it 'chains' do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        check manager.order(table[:id]).should == manager
+      end
+    end
+
+    describe 'on' do
+      it 'takes two params' do
+        left      = Table.new :users
+        right     = left.alias
+        predicate = left[:id].eq(right[:id])
+        manager   = Arel::SelectManager.new Table.engine
+
+        manager.from left
+        manager.join(right).on(predicate, predicate)
+        manager.to_sql.should be_like %{
+           SELECT FROM "users"
+             INNER JOIN "users" "users_2"
+               ON "users"."id" = "users_2"."id" AND
+               "users"."id" = "users_2"."id"
+        }
+      end
+
+      it 'takes three params' do
+        left      = Table.new :users
+        right     = left.alias
+        predicate = left[:id].eq(right[:id])
+        manager   = Arel::SelectManager.new Table.engine
+
+        manager.from left
+        manager.join(right).on(
+          predicate,
+          predicate,
+          left[:name].eq(right[:name])
+        )
+        manager.to_sql.should be_like %{
+           SELECT FROM "users"
+             INNER JOIN "users" "users_2"
+               ON "users"."id" = "users_2"."id" AND
+               "users"."id" = "users_2"."id" AND
+               "users"."name" = "users_2"."name"
+        }
+      end
+    end
+
+    describe 'join' do
+      it 'responds to join' do
+        left      = Table.new :users
+        right     = left.alias
+        predicate = left[:id].eq(right[:id])
+        manager   = Arel::SelectManager.new Table.engine
+
+        manager.from left
+        manager.join(right).on(predicate)
+        manager.to_sql.should be_like %{
+           SELECT FROM "users"
+             INNER JOIN "users" "users_2"
+               ON "users"."id" = "users_2"."id"
+        }
+      end
+
+      it 'takes a class' do
+        left      = Table.new :users
+        right     = left.alias
+        predicate = left[:id].eq(right[:id])
+        manager   = Arel::SelectManager.new Table.engine
+
+        manager.from left
+        manager.join(right, Nodes::OuterJoin).on(predicate)
+        manager.to_sql.should be_like %{
+           SELECT FROM "users"
+             LEFT OUTER JOIN "users" "users_2"
+               ON "users"."id" = "users_2"."id"
+        }
+      end
+
+      it 'noops on nil' do
+        manager   = Arel::SelectManager.new Table.engine
+        check manager.join(nil).should == manager
+      end
+    end
+
+    describe 'joins' do
+      it 'returns join sql' do
+        table   = Table.new :users
+        aliaz   = table.alias
+        manager = Arel::SelectManager.new Table.engine
+        manager.from Nodes::InnerJoin.new(table, aliaz, table[:id].eq(aliaz[:id]))
+        manager.join_sql.should be_like %{
+          INNER JOIN "users" "users_2" "users"."id" = "users_2"."id"
+        }
+        check manager.joins(manager).should == manager.join_sql
+      end
+
+      it 'returns outer join sql' do
+        table   = Table.new :users
+        aliaz   = table.alias
+        manager = Arel::SelectManager.new Table.engine
+        manager.from Nodes::OuterJoin.new(table, aliaz, table[:id].eq(aliaz[:id]))
+        manager.join_sql.should be_like %{
+          LEFT OUTER JOIN "users" "users_2" "users"."id" = "users_2"."id"
+        }
+        check manager.joins(manager).should == manager.join_sql
+      end
+
+      it 'returns string join sql' do
+        table   = Table.new :users
+        aliaz   = table.alias
+        manager = Arel::SelectManager.new Table.engine
+        manager.from Nodes::StringJoin.new(table, 'hello')
+        manager.join_sql.should be_like %{ 'hello' }
+        check manager.joins(manager).should == manager.join_sql
+      end
+    end
+
+    describe 'order_clauses' do
+      it 'returns order clauses as a list' do
+        table   = Table.new :users
+        aliaz   = table.alias
+        manager = Arel::SelectManager.new Table.engine
+        manager.from table
+        manager.order table[:id]
+        manager.order_clauses.first.should be_like %{ "users"."id" }
+      end
+    end
+
+    describe 'group' do
+      it 'takes an attribute' do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.from table
+        manager.group table[:id]
+        manager.to_sql.should be_like %{
+          SELECT FROM "users" GROUP BY "users"."id"
+        }
+      end
+
+      it 'chains' do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        check manager.group(table[:id]).should == manager
+      end
+
+      it 'takes multiple args' do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.from table
+        manager.group table[:id], table[:name]
+        manager.to_sql.should be_like %{
+          SELECT FROM "users" GROUP BY "users"."id", "users"."name"
+        }
+      end
+
+      # FIXME: backwards compat
+      it 'makes strings literals' do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.from table
+        manager.group 'foo'
+        manager.to_sql.should be_like %{ SELECT FROM "users" GROUP BY foo }
+      end
+    end
+
+    describe 'delete' do
+      it "copies from" do
+        engine  = EngineProxy.new Table.engine
+        table   = Table.new :users
+        manager = Arel::SelectManager.new engine
+        manager.from table
+        manager.delete
+
+        engine.executed.last.should be_like %{ DELETE FROM "users" }
+      end
+
+      it "copies where" do
+        engine  = EngineProxy.new Table.engine
+        table   = Table.new :users
+        manager = Arel::SelectManager.new engine
+        manager.from table
+        manager.where table[:id].eq 10
+        manager.delete
+
+        engine.executed.last.should be_like %{
+          DELETE FROM "users" WHERE "users"."id" = 10
+        }
+      end
+    end
+
+    describe 'update' do
+      it 'copies limits' do
+        engine  = EngineProxy.new Table.engine
+        table   = Table.new :users
+        manager = Arel::SelectManager.new engine
+        manager.from table
+        manager.take 1
+        manager.update(SqlLiteral.new('foo = bar'))
+
+        engine.executed.last.should be_like %{
+          UPDATE "users" SET foo = bar
+          WHERE "users"."id" IN (SELECT "users"."id" FROM "users" LIMIT 1)
+        }
+      end
+
+      it 'copies order' do
+        engine  = EngineProxy.new Table.engine
+        table   = Table.new :users
+        manager = Arel::SelectManager.new engine
+        manager.from table
+        manager.order :foo
+        manager.update(SqlLiteral.new('foo = bar'))
+
+        engine.executed.last.should be_like %{
+          UPDATE "users" SET foo = bar
+          WHERE "users"."id" IN (SELECT "users"."id" FROM "users" ORDER BY foo)
+        }
+      end
+
+      it 'takes a string' do
+        engine  = EngineProxy.new Table.engine
+        table   = Table.new :users
+        manager = Arel::SelectManager.new engine
+        manager.from table
+        manager.update(SqlLiteral.new('foo = bar'))
+
+        engine.executed.last.should be_like %{ UPDATE "users" SET foo = bar }
+      end
+
+      it 'copies where clauses' do
+        engine  = EngineProxy.new Table.engine
+        table   = Table.new :users
+        manager = Arel::SelectManager.new engine
+        manager.where table[:id].eq 10
+        manager.from table
+        manager.update(table[:id] => 1)
+
+        engine.executed.last.should be_like %{
+          UPDATE "users" SET "id" = 1 WHERE "users"."id" = 10
+        }
+      end
+
+      it 'executes an update statement' do
+        engine  = EngineProxy.new Table.engine
+        table   = Table.new :users
+        manager = Arel::SelectManager.new engine
+        manager.from table
+        manager.update(table[:id] => 1)
+
+        engine.executed.last.should be_like %{
+          UPDATE "users" SET "id" = 1
+        }
+      end
+    end
+
+    describe 'project' do
+      it 'takes multiple args' do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.project Nodes::SqlLiteral.new('foo'),
+          Nodes::SqlLiteral.new('bar')
+        manager.to_sql.should be_like %{ SELECT foo, bar }
+      end
+
+      it 'takes strings' do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.project Nodes::SqlLiteral.new('*')
+        manager.to_sql.should be_like %{ SELECT * }
+      end
+
+      it "takes sql literals" do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.project Nodes::SqlLiteral.new '*'
+        manager.to_sql.should be_like %{
+          SELECT *
+        }
+      end
+    end
+
+    describe 'take' do
+      it "knows take" do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.from(table).project(table['id'])
+        manager.where(table['id'].eq(1))
+        manager.take 1
+
+        manager.to_sql.should be_like %{
+          SELECT "users"."id"
+          FROM "users"
+          WHERE "users"."id" = 1
+          LIMIT 1
+        }
+      end
+
+      it "chains" do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.take(1).should == manager
+      end
+    end
+
+    describe 'where' do
+      it "knows where" do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.from(table).project(table['id'])
+        manager.where(table['id'].eq(1))
+        manager.to_sql.should be_like %{
+          SELECT "users"."id"
+          FROM "users"
+          WHERE "users"."id" = 1
+        }
+      end
+
+      it "chains" do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        manager.from(table)
+        manager.project(table['id']).where(table['id'].eq 1).should == manager
+      end
+    end
+
+    describe "join" do
+      it "joins itself" do
+        left      = Table.new :users
+        right     = left.alias
+        predicate = left[:id].eq(right[:id])
+
+        mgr = left.join(right)
+        mgr.project Nodes::SqlLiteral.new('*')
+        check mgr.on(predicate).should == mgr
+
+        mgr.to_sql.should be_like %{
+           SELECT * FROM "users"
+             INNER JOIN "users" "users_2"
+               ON "users"."id" = "users_2"."id"
+        }
+      end
+    end
+
+    describe 'from' do
+      it "makes sql" do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+
+        manager.from table
+        manager.project table['id']
+        manager.to_sql.should be_like 'SELECT "users"."id" FROM "users"'
+      end
+
+      it "chains" do
+        table   = Table.new :users
+        manager = Arel::SelectManager.new Table.engine
+        check manager.from(table).project(table['id']).should == manager
+        manager.to_sql.should be_like 'SELECT "users"."id" FROM "users"'
+      end
+    end
+
+    describe "TreeManager" do
+      subject do
+        table   = Table.new :users
+        Arel::SelectManager.new(Table.engine).tap do |manager|
+          manager.from(table).project(table['id'])
+        end
+      end
+
+      it_should_behave_like "TreeManager"
+    end
+  end
+end