diff options
Diffstat (limited to 'spec/engines/sql/unit/predicates/not_spec.rb')
-rw-r--r-- | spec/engines/sql/unit/predicates/not_spec.rb | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/spec/engines/sql/unit/predicates/not_spec.rb b/spec/engines/sql/unit/predicates/not_spec.rb new file mode 100644 index 0000000000..b124d4c80b --- /dev/null +++ b/spec/engines/sql/unit/predicates/not_spec.rb @@ -0,0 +1,75 @@ +require 'spec_helper' + +module Arel + module Predicates + describe Equality do + before do + @relation1 = Arel::Table.new(:users) + @relation2 = Arel::Table.new(:photos) + @attribute1 = @relation1[:id] + @attribute2 = @relation2[:user_id] + end + + describe '#to_sql' do + describe 'when relating to a non-nil value' do + it "manufactures a not predicate" do + sql = Not.new(@attribute1, @attribute2).to_sql + + adapter_is :mysql do + sql.should be_like(%Q{`users`.`id` != `photos`.`user_id`}) + end + + adapter_is :oracle do + sql.should be_like(%Q{"USERS"."ID" != "PHOTOS"."USER_ID"}) + end + + adapter_is_not :mysql, :oracle do + sql.should be_like(%Q{"users"."id" != "photos"."user_id"}) + end + end + end + + describe 'when relation to a nil value' do + before do + @nil = nil + end + + it "manufactures an is null predicate" do + sql = Not.new(@attribute1, @nil).to_sql + + adapter_is :mysql do + sql.should be_like(%Q{`users`.`id` IS NOT NULL}) + end + + adapter_is :oracle do + sql.should be_like(%Q{"USERS"."ID" IS NOT NULL}) + end + + adapter_is_not :mysql, :oracle do + sql.should be_like(%Q{"users"."id" IS NOT NULL}) + end + end + end + + describe "when relating to a nil Value" do + it "manufactures an IS NULL predicate" do + value = nil.bind(@relation1) + sql = Not.new(@attribute1, value).to_sql + + adapter_is :mysql do + sql.should be_like(%Q{`users`.`id` IS NOT NULL}) + end + + adapter_is :oracle do + sql.should be_like(%Q{"USERS"."ID" IS NOT NULL}) + end + + adapter_is_not :mysql, :oracle do + sql.should be_like(%Q{"users"."id" IS NOT NULL}) + end + end + end + end + end + end +end |