We're obviously writing specs for arel. No need for a sub directory.

1 files changed, 203 insertions, 0 deletions

diff --git a/spec/engines/sql/unit/relations/update_spec.rb b/spec/engines/sql/unit/relations/update_spec.rb
new file mode 100644
index 0000000000..cc2ad9913b
--- /dev/null
+++ b/spec/engines/sql/unit/relations/update_spec.rb
@@ -0,0 +1,203 @@
+require 'spec_helper'
+
+class User
+  def self.primary_key
+    "id"
+  end
+end
+
+module Arel
+  describe Update do
+    before do
+      @relation = Table.new(:users)
+    end
+
+    describe '#to_sql' do
+      it "manufactures sql updating attributes when given multiple attributes" do
+        sql = Update.new(@relation, @relation[:id] => 1, @relation[:name] => "nick").to_sql
+
+        adapter_is :mysql do
+          sql.should be_like(%Q{
+            UPDATE `users`
+            SET `id` = 1, `name` = 'nick'
+          })
+        end
+
+        adapter_is :sqlite3 do
+          sql.should be_like(%Q{
+            UPDATE "users"
+            SET "id" = 1, "name" = 'nick'
+          })
+        end
+
+        adapter_is :postgresql do
+          sql.should be_like(%Q{
+            UPDATE "users"
+            SET "id" = 1, "name" = E'nick'
+          })
+        end
+
+        adapter_is :oracle do
+          sql.should be_like(%Q{
+            UPDATE "USERS"
+            SET "ID" = 1, "NAME" = 'nick'
+          })
+        end
+      end
+
+      it "manufactures sql updating attributes when given a ranged relation" do
+        sql = Update.new(@relation.take(1), @relation[:name] => "nick").to_sql
+
+        adapter_is :mysql do
+          sql.should be_like(%Q{
+            UPDATE `users`
+            SET `name` = 'nick'
+            LIMIT 1
+          })
+        end
+
+        adapter_is :sqlite3 do
+          sql.should be_like(%Q{
+            UPDATE "users" SET
+            "name" = 'nick'
+            WHERE "id" IN (SELECT "id" FROM "users"  LIMIT 1)
+          })
+        end
+
+        adapter_is :postgresql do
+          sql.should be_like(%Q{
+            UPDATE "users" SET
+            "name" = E'nick'
+            WHERE "id" IN (SELECT "id" FROM "users"  LIMIT 1)
+          })
+        end
+
+        adapter_is :oracle do
+          sql.should be_like(%Q{
+            UPDATE "USERS" SET
+            "NAME" = 'nick'
+            WHERE "ID" IN (SELECT "ID" FROM "USERS" WHERE ROWNUM <= 1)
+          })
+
+          sql_with_order_by = Update.new(@relation.order(@relation[:id]).take(1), @relation[:name] => "nick").to_sql
+          sql_with_order_by.should be_like(%Q{
+            UPDATE "USERS" SET
+            "NAME" = 'nick'
+            WHERE "ID" IN (select * from
+                          (SELECT "ID" FROM "USERS" ORDER BY "USERS"."ID" ASC)
+                          where rownum <= 1)
+          })
+        end
+      end
+
+      describe 'when given values whose types correspond to the types of the attributes' do
+        before do
+          @update = Update.new(@relation, @relation[:name] => "nick")
+        end
+
+        it 'manufactures sql updating attributes' do
+          adapter_is :mysql do
+            @update.to_sql.should be_like(%Q{
+              UPDATE `users`
+              SET `name` = 'nick'
+            })
+          end
+
+          adapter_is :sqlite3 do
+            @update.to_sql.should be_like(%Q{
+              UPDATE "users"
+              SET "name" = 'nick'
+            })
+          end
+
+          adapter_is :postgresql do
+            @update.to_sql.should be_like(%Q{
+              UPDATE "users"
+              SET "name" = E'nick'
+            })
+          end
+
+          adapter_is :oracle do
+            @update.to_sql.should be_like(%Q{
+              UPDATE "USERS"
+              SET "NAME" = 'nick'
+            })
+          end
+        end
+      end
+
+      describe 'when given values whose types differ from from the types of the attributes' do
+        before do
+          @update = Update.new(@relation, @relation[:id] => '1-asdf')
+        end
+
+        it 'manufactures sql updating attributes' do
+          adapter_is :mysql do
+            @update.to_sql.should be_like(%Q{
+              UPDATE `users`
+              SET `id` = 1
+            })
+          end
+
+          adapter_is :oracle do
+            @update.to_sql.should be_like(%Q{
+              UPDATE "USERS"
+              SET "ID" = 1
+            })
+          end
+
+          adapter_is_not :mysql, :oracle do
+            @update.to_sql.should be_like(%Q{
+              UPDATE "users"
+              SET "id" = 1
+            })
+          end
+        end
+      end
+
+      describe 'when the relation is a where' do
+        before do
+          @update = Update.new(
+            @relation.where(@relation[:id].eq(1)),
+            @relation[:name] => "nick"
+          )
+        end
+
+        it 'manufactures sql updating a where relation' do
+          adapter_is :mysql do
+            @update.to_sql.should be_like(%Q{
+              UPDATE `users`
+              SET `name` = 'nick'
+              WHERE `users`.`id` = 1
+            })
+          end
+
+          adapter_is :sqlite3 do
+            @update.to_sql.should be_like(%Q{
+              UPDATE "users"
+              SET "name" = 'nick'
+              WHERE "users"."id" = 1
+            })
+          end
+
+          adapter_is :postgresql do
+            @update.to_sql.should be_like(%Q{
+              UPDATE "users"
+              SET "name" = E'nick'
+              WHERE "users"."id" = 1
+            })
+          end
+
+          adapter_is :oracle do
+            @update.to_sql.should be_like(%Q{
+              UPDATE "USERS"
+              SET "NAME" = 'nick'
+              WHERE "USERS"."ID" = 1
+            })
+          end
+        end
+      end
+    end
+
+  end
+end