1 files changed, 107 insertions, 0 deletions
diff --git a/spec/arel/engines/sql/integration/joins/with_compounds_spec.rb b/spec/arel/engines/sql/integration/joins/with_compounds_spec.rb
new file mode 100644
index 0000000000..4bceef4975
--- /dev/null
+++ b/spec/arel/engines/sql/integration/joins/with_compounds_spec.rb
@@ -0,0 +1,107 @@
+require File.join(File.dirname(__FILE__), '..', '..', '..', '..', '..', 'spec_helper')
+
+module Arel
+  describe Join do
+    before do
+      @relation1 = Table(:users)
+      @relation2 = Table(:photos)
+      @predicate = @relation1[:id].eq(@relation2[:user_id])
+    end
+
+    describe '#to_sql' do
+      describe 'when the join contains a where' do
+        describe 'and the where is given a string' do
+          it 'does not escape the string' do
+            sql = @relation1                    \
+              .join(@relation2.where("asdf"))   \
+                .on(@predicate)                 \
+            .to_sql
+
+            adapter_is :mysql do
+              sql.should be_like(%Q{
+                SELECT `users`.`id`, `users`.`name`, `photos`.`id`, `photos`.`user_id`, `photos`.`camera_id`
+                FROM `users`
+                INNER JOIN `photos`
+                  ON `users`.`id` = `photos`.`user_id` AND asdf
+              })
+            end
+
+            adapter_is_not :mysql do
+              sql.should be_like(%Q{
+                SELECT "users"."id", "users"."name", "photos"."id", "photos"."user_id", "photos"."camera_id"
+                FROM "users"
+                INNER JOIN "photos"
+                  ON "users"."id" = "photos"."user_id" AND asdf
+              })
+            end
+          end
+        end
+      end
+
+      describe 'when a compound contains a join' do
+        describe 'and the compound is a where' do
+          it 'manufactures sql disambiguating the tables' do
+            sql = @relation1                  \
+              .where(@relation1[:id].eq(1))   \
+              .join(@relation2)               \
+                .on(@predicate)               \
+              .where(@relation1[:id].eq(1))   \
+            .to_sql
+
+            adapter_is :mysql do
+              sql.should be_like(%Q{
+                SELECT `users`.`id`, `users`.`name`, `photos`.`id`, `photos`.`user_id`, `photos`.`camera_id`
+                FROM `users`
+                INNER JOIN `photos`
+                  ON `users`.`id` = `photos`.`user_id`
+                WHERE `users`.`id` = 1
+                  AND `users`.`id` = 1
+              })
+            end
+
+            adapter_is_not :mysql do
+              sql.should be_like(%Q{
+                SELECT "users"."id", "users"."name", "photos"."id", "photos"."user_id", "photos"."camera_id"
+                FROM "users"
+                INNER JOIN "photos"
+                  ON "users"."id" = "photos"."user_id"
+                WHERE "users"."id" = 1
+                  AND "users"."id" = 1
+              })
+            end
+          end
+        end
+
+        describe 'and the compound is a group' do
+          it 'manufactures sql disambiguating the tables' do
+            sql = @relation1          \
+              .join(@relation2)       \
+                .on(@predicate)       \
+              .group(@relation1[:id]) \
+            .to_sql
+
+            adapter_is :mysql do
+              sql.should be_like(%Q{
+                SELECT `users`.`id`, `users`.`name`, `photos`.`id`, `photos`.`user_id`, `photos`.`camera_id`
+                FROM `users`
+                INNER JOIN `photos`
+                  ON `users`.`id` = `photos`.`user_id`
+                GROUP BY `users`.`id`
+              })
+            end
+
+            adapter_is_not :mysql do
+              sql.should be_like(%Q{
+                SELECT "users"."id", "users"."name", "photos"."id", "photos"."user_id", "photos"."camera_id"
+                FROM "users"
+                INNER JOIN "photos"
+                  ON "users"."id" = "photos"."user_id"
+                GROUP BY "users"."id"
+              })
+            end
+          end
+        end
+      end
+    end
+  end
+end