full sql statement generation

1 files changed, 44 insertions, 0 deletions

diff --git a/spec/arel/tree_manager.rb b/spec/arel/tree_manager.rb
new file mode 100644
index 0000000000..513b41e305
--- /dev/null
+++ b/spec/arel/tree_manager.rb
@@ -0,0 +1,44 @@
+require 'spec_helper'
+
+module Arel
+  describe 'tree manager' do
+    describe 'where' do
+      it "knows where" do
+        table   = Table.new :users
+        manager = Arel::TreeManager.new Table.engine
+        manager.from(table).project(table['id'])
+        manager.where(table['id'].eq(1))
+        manager.to_sql.should == %{
+          SELECT "users"."id"
+          FROM "users"
+          WHERE "users"."id" = 1
+        }.gsub("\n", '').gsub(/(^\s*|\s*$)/, '').squeeze(' ')
+      end
+
+      it "chains" do
+        table   = Table.new :users
+        manager = Arel::TreeManager.new Table.engine
+        manager.from(table)
+        manager.project(table['id']).where(table['id'].eq 1).should == manager
+      end
+    end
+
+    describe 'from' do
+      it "makes sql" do
+        table   = Table.new :users
+        manager = Arel::TreeManager.new Table.engine
+
+        manager.from table
+        manager.project table['id']
+        manager.to_sql.should == 'SELECT "users"."id" FROM "users"'
+      end
+
+      it "chains" do
+        table   = Table.new :users
+        manager = Arel::TreeManager.new Table.engine
+        manager.from(table).project(table['id']).should == manager
+        manager.to_sql.should == 'SELECT "users"."id" FROM "users"'
+      end
+    end
+  end
+end