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author | Ryan Davis <ryand-ruby@zenspider.com> | 2010-10-18 15:41:21 -0700 |
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committer | Ryan Davis <ryand-ruby@zenspider.com> | 2010-10-18 15:41:21 -0700 |
commit | e1ebe6e949ef3674434bfa90d271a7b74c2ac153 (patch) | |
tree | b0c340817d75bddf9840c97a946a7217ff12e8ab /test/visitors/test_oracle.rb | |
parent | 7959e55ead84be096247d9622404d1c60ca21c88 (diff) | |
download | rails-e1ebe6e949ef3674434bfa90d271a7b74c2ac153.tar.gz rails-e1ebe6e949ef3674434bfa90d271a7b74c2ac153.tar.bz2 rails-e1ebe6e949ef3674434bfa90d271a7b74c2ac153.zip |
Fisting arel specs -- still needs tree_manager and cleanup
Diffstat (limited to 'test/visitors/test_oracle.rb')
-rw-r--r-- | test/visitors/test_oracle.rb | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/test/visitors/test_oracle.rb b/test/visitors/test_oracle.rb new file mode 100644 index 0000000000..8b5732f287 --- /dev/null +++ b/test/visitors/test_oracle.rb @@ -0,0 +1,111 @@ +require 'spec_helper' + +module Arel + module Visitors + describe 'the oracle visitor' do + before do + @visitor = Oracle.new Table.engine + end + + it 'modifies order when there is distinct and first value' do + # *sigh* + select = "DISTINCT foo.id, FIRST_VALUE(projects.name) OVER (foo) AS alias_0__" + stmt = Nodes::SelectStatement.new + stmt.cores.first.projections << Nodes::SqlLiteral.new(select) + stmt.orders << Nodes::SqlLiteral.new('foo') + sql = @visitor.accept(stmt) + sql.must_be_like %{ + SELECT #{select} ORDER BY alias_0__ + } + end + + it 'is idempotent with crazy query' do + # *sigh* + select = "DISTINCT foo.id, FIRST_VALUE(projects.name) OVER (foo) AS alias_0__" + stmt = Nodes::SelectStatement.new + stmt.cores.first.projections << Nodes::SqlLiteral.new(select) + stmt.orders << Nodes::SqlLiteral.new('foo') + + sql = @visitor.accept(stmt) + sql2 = @visitor.accept(stmt) + check sql.must_equal sql2 + end + + it 'splits orders with commas' do + # *sigh* + select = "DISTINCT foo.id, FIRST_VALUE(projects.name) OVER (foo) AS alias_0__" + stmt = Nodes::SelectStatement.new + stmt.cores.first.projections << Nodes::SqlLiteral.new(select) + stmt.orders << Nodes::SqlLiteral.new('foo, bar') + sql = @visitor.accept(stmt) + sql.must_be_like %{ + SELECT #{select} ORDER BY alias_0__, alias_1__ + } + end + + describe 'Nodes::SelectStatement' do + describe 'limit' do + it 'adds a rownum clause' do + stmt = Nodes::SelectStatement.new + stmt.limit = 10 + sql = @visitor.accept stmt + sql.must_be_like %{ SELECT WHERE ROWNUM <= 10 } + end + + it 'is idempotent' do + stmt = Nodes::SelectStatement.new + stmt.orders << Nodes::SqlLiteral.new('foo') + stmt.limit = 10 + sql = @visitor.accept stmt + sql2 = @visitor.accept stmt + check sql.must_equal sql2 + end + + it 'creates a subquery when there is order_by' do + stmt = Nodes::SelectStatement.new + stmt.orders << Nodes::SqlLiteral.new('foo') + stmt.limit = 10 + sql = @visitor.accept stmt + sql.must_be_like %{ + SELECT * FROM (SELECT ORDER BY foo) WHERE ROWNUM <= 10 + } + end + + it 'creates a subquery when there is DISTINCT' do + stmt = Nodes::SelectStatement.new + stmt.cores.first.projections << Nodes::SqlLiteral.new('DISTINCT id') + stmt.limit = 10 + sql = @visitor.accept stmt + sql.must_be_like %{ + SELECT * FROM (SELECT DISTINCT id) WHERE ROWNUM <= 10 + } + end + + it 'creates a different subquery when there is an offset' do + stmt = Nodes::SelectStatement.new + stmt.limit = 10 + stmt.offset = Nodes::Offset.new(10) + sql = @visitor.accept stmt + sql.must_be_like %{ + SELECT * FROM ( + SELECT raw_sql_.*, rownum raw_rnum_ + FROM (SELECT ) raw_sql_ + WHERE rownum <= 20 + ) + WHERE raw_rnum_ > 10 + } + end + + it 'is idempotent with different subquery' do + stmt = Nodes::SelectStatement.new + stmt.limit = 10 + stmt.offset = Nodes::Offset.new(10) + sql = @visitor.accept stmt + sql2 = @visitor.accept stmt + check sql.must_equal sql2 + end + end + end + end + end +end |