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# frozen_string_literal: true
require_relative "../helper"
module Arel
module Visitors
class Oracle12Test < Arel::Spec
before do
@visitor = Oracle12.new Table.engine.connection
@table = Table.new(:users)
end
def compile(node)
@visitor.accept(node, Collectors::SQLString.new).value
end
it "modified except to be minus" do
left = Nodes::SqlLiteral.new("SELECT * FROM users WHERE age > 10")
right = Nodes::SqlLiteral.new("SELECT * FROM users WHERE age > 20")
sql = compile Nodes::Except.new(left, right)
sql.must_be_like %{
( SELECT * FROM users WHERE age > 10 MINUS SELECT * FROM users WHERE age > 20 )
}
end
it "generates select options offset then limit" do
stmt = Nodes::SelectStatement.new
stmt.offset = Nodes::Offset.new(1)
stmt.limit = Nodes::Limit.new(10)
sql = compile(stmt)
sql.must_be_like "SELECT OFFSET 1 ROWS FETCH FIRST 10 ROWS ONLY"
end
describe "locking" do
it "generates ArgumentError if limit and lock are used" do
stmt = Nodes::SelectStatement.new
stmt.limit = Nodes::Limit.new(10)
stmt.lock = Nodes::Lock.new(Arel.sql("FOR UPDATE"))
assert_raises ArgumentError do
compile(stmt)
end
end
it "defaults to FOR UPDATE when locking" do
node = Nodes::Lock.new(Arel.sql("FOR UPDATE"))
compile(node).must_be_like "FOR UPDATE"
end
end
describe "Nodes::BindParam" do
it "increments each bind param" do
query = @table[:name].eq(Arel::Nodes::BindParam.new(1))
.and(@table[:id].eq(Arel::Nodes::BindParam.new(1)))
compile(query).must_be_like %{
"users"."name" = :a1 AND "users"."id" = :a2
}
end
end
describe "Nodes::IsNotDistinctFrom" do
it "should construct a valid generic SQL statement" do
test = Table.new(:users)[:name].is_not_distinct_from "Aaron Patterson"
compile(test).must_be_like %{
DECODE("users"."name", 'Aaron Patterson', 0, 1) = 0
}
end
it "should handle column names on both sides" do
test = Table.new(:users)[:first_name].is_not_distinct_from Table.new(:users)[:last_name]
compile(test).must_be_like %{
DECODE("users"."first_name", "users"."last_name", 0, 1) = 0
}
end
it "should handle nil" do
@table = Table.new(:users)
val = Nodes.build_quoted(nil, @table[:active])
sql = compile Nodes::IsNotDistinctFrom.new(@table[:name], val)
sql.must_be_like %{ "users"."name" IS NULL }
end
end
describe "Nodes::IsDistinctFrom" do
it "should handle column names on both sides" do
test = Table.new(:users)[:first_name].is_distinct_from Table.new(:users)[:last_name]
compile(test).must_be_like %{
DECODE("users"."first_name", "users"."last_name", 0, 1) = 1
}
end
it "should handle nil" do
@table = Table.new(:users)
val = Nodes.build_quoted(nil, @table[:active])
sql = compile Nodes::IsDistinctFrom.new(@table[:name], val)
sql.must_be_like %{ "users"."name" IS NOT NULL }
end
end
end
end
end
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