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-rw-r--r--test/visitors/test_postgres.rb280
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diff --git a/test/visitors/test_postgres.rb b/test/visitors/test_postgres.rb
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-# frozen_string_literal: true
-require 'helper'
-
-module Arel
- module Visitors
- describe 'the postgres visitor' do
- before do
- @visitor = PostgreSQL.new Table.engine.connection
- @table = Table.new(:users)
- @attr = @table[:id]
- end
-
- def compile node
- @visitor.accept(node, Collectors::SQLString.new).value
- end
-
- describe 'locking' do
- it 'defaults to FOR UPDATE' do
- compile(Nodes::Lock.new(Arel.sql('FOR UPDATE'))).must_be_like %{
- FOR UPDATE
- }
- end
-
- it 'allows a custom string to be used as a lock' do
- node = Nodes::Lock.new(Arel.sql('FOR SHARE'))
- compile(node).must_be_like %{
- FOR SHARE
- }
- end
- end
-
- it "should escape LIMIT" do
- sc = Arel::Nodes::SelectStatement.new
- sc.limit = Nodes::Limit.new(Nodes.build_quoted("omg"))
- sc.cores.first.projections << Arel.sql('DISTINCT ON')
- sc.orders << Arel.sql("xyz")
- sql = compile(sc)
- assert_match(/LIMIT 'omg'/, sql)
- assert_equal 1, sql.scan(/LIMIT/).length, 'should have one limit'
- end
-
- it 'should support DISTINCT ON' do
- core = Arel::Nodes::SelectCore.new
- core.set_quantifier = Arel::Nodes::DistinctOn.new(Arel.sql('aaron'))
- assert_match 'DISTINCT ON ( aaron )', compile(core)
- end
-
- it 'should support DISTINCT' do
- core = Arel::Nodes::SelectCore.new
- core.set_quantifier = Arel::Nodes::Distinct.new
- assert_equal 'SELECT DISTINCT', compile(core)
- end
-
- it 'encloses LATERAL queries in parens' do
- subquery = @table.project(:id).where(@table[:name].matches('foo%'))
- compile(subquery.lateral).must_be_like %{
- LATERAL (SELECT id FROM "users" WHERE "users"."name" ILIKE 'foo%')
- }
- end
-
- it 'produces LATERAL queries with alias' do
- subquery = @table.project(:id).where(@table[:name].matches('foo%'))
- compile(subquery.lateral('bar')).must_be_like %{
- LATERAL (SELECT id FROM "users" WHERE "users"."name" ILIKE 'foo%') bar
- }
- end
-
- describe "Nodes::Matches" do
- it "should know how to visit" do
- node = @table[:name].matches('foo%')
- node.must_be_kind_of Nodes::Matches
- node.case_sensitive.must_equal(false)
- compile(node).must_be_like %{
- "users"."name" ILIKE 'foo%'
- }
- end
-
- it "should know how to visit case sensitive" do
- node = @table[:name].matches('foo%', nil, true)
- node.case_sensitive.must_equal(true)
- compile(node).must_be_like %{
- "users"."name" LIKE 'foo%'
- }
- end
-
- it "can handle ESCAPE" do
- node = @table[:name].matches('foo!%', '!')
- compile(node).must_be_like %{
- "users"."name" ILIKE 'foo!%' ESCAPE '!'
- }
- end
-
- it 'can handle subqueries' do
- subquery = @table.project(:id).where(@table[:name].matches('foo%'))
- node = @attr.in subquery
- compile(node).must_be_like %{
- "users"."id" IN (SELECT id FROM "users" WHERE "users"."name" ILIKE 'foo%')
- }
- end
- end
-
- describe "Nodes::DoesNotMatch" do
- it "should know how to visit" do
- node = @table[:name].does_not_match('foo%')
- node.must_be_kind_of Nodes::DoesNotMatch
- node.case_sensitive.must_equal(false)
- compile(node).must_be_like %{
- "users"."name" NOT ILIKE 'foo%'
- }
- end
-
- it "should know how to visit case sensitive" do
- node = @table[:name].does_not_match('foo%', nil, true)
- node.case_sensitive.must_equal(true)
- compile(node).must_be_like %{
- "users"."name" NOT LIKE 'foo%'
- }
- end
-
- it "can handle ESCAPE" do
- node = @table[:name].does_not_match('foo!%', '!')
- compile(node).must_be_like %{
- "users"."name" NOT ILIKE 'foo!%' ESCAPE '!'
- }
- end
-
- it 'can handle subqueries' do
- subquery = @table.project(:id).where(@table[:name].does_not_match('foo%'))
- node = @attr.in subquery
- compile(node).must_be_like %{
- "users"."id" IN (SELECT id FROM "users" WHERE "users"."name" NOT ILIKE 'foo%')
- }
- end
- end
-
- describe "Nodes::Regexp" do
- it "should know how to visit" do
- node = @table[:name].matches_regexp('foo.*')
- node.must_be_kind_of Nodes::Regexp
- node.case_sensitive.must_equal(true)
- compile(node).must_be_like %{
- "users"."name" ~ 'foo.*'
- }
- end
-
- it "can handle case insensitive" do
- node = @table[:name].matches_regexp('foo.*', false)
- node.must_be_kind_of Nodes::Regexp
- node.case_sensitive.must_equal(false)
- compile(node).must_be_like %{
- "users"."name" ~* 'foo.*'
- }
- end
-
- it 'can handle subqueries' do
- subquery = @table.project(:id).where(@table[:name].matches_regexp('foo.*'))
- node = @attr.in subquery
- compile(node).must_be_like %{
- "users"."id" IN (SELECT id FROM "users" WHERE "users"."name" ~ 'foo.*')
- }
- end
- end
-
- describe "Nodes::NotRegexp" do
- it "should know how to visit" do
- node = @table[:name].does_not_match_regexp('foo.*')
- node.must_be_kind_of Nodes::NotRegexp
- node.case_sensitive.must_equal(true)
- compile(node).must_be_like %{
- "users"."name" !~ 'foo.*'
- }
- end
-
- it "can handle case insensitive" do
- node = @table[:name].does_not_match_regexp('foo.*', false)
- node.case_sensitive.must_equal(false)
- compile(node).must_be_like %{
- "users"."name" !~* 'foo.*'
- }
- end
-
- it 'can handle subqueries' do
- subquery = @table.project(:id).where(@table[:name].does_not_match_regexp('foo.*'))
- node = @attr.in subquery
- compile(node).must_be_like %{
- "users"."id" IN (SELECT id FROM "users" WHERE "users"."name" !~ 'foo.*')
- }
- 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" = $1 AND "users"."id" = $2
- }
- end
- end
-
- describe "Nodes::Cube" do
- it "should know how to visit with array arguments" do
- node = Arel::Nodes::Cube.new([@table[:name], @table[:bool]])
- compile(node).must_be_like %{
- CUBE( "users"."name", "users"."bool" )
- }
- end
-
- it "should know how to visit with CubeDimension Argument" do
- dimensions = Arel::Nodes::GroupingElement.new([@table[:name], @table[:bool]])
- node = Arel::Nodes::Cube.new(dimensions)
- compile(node).must_be_like %{
- CUBE( "users"."name", "users"."bool" )
- }
- end
-
- it "should know how to generate paranthesis when supplied with many Dimensions" do
- dim1 = Arel::Nodes::GroupingElement.new(@table[:name])
- dim2 = Arel::Nodes::GroupingElement.new([@table[:bool], @table[:created_at]])
- node = Arel::Nodes::Cube.new([dim1, dim2])
- compile(node).must_be_like %{
- CUBE( ( "users"."name" ), ( "users"."bool", "users"."created_at" ) )
- }
- end
- end
-
- describe "Nodes::GroupingSet" do
- it "should know how to visit with array arguments" do
- node = Arel::Nodes::GroupingSet.new([@table[:name], @table[:bool]])
- compile(node).must_be_like %{
- GROUPING SET( "users"."name", "users"."bool" )
- }
- end
-
- it "should know how to visit with CubeDimension Argument" do
- group = Arel::Nodes::GroupingElement.new([@table[:name], @table[:bool]])
- node = Arel::Nodes::GroupingSet.new(group)
- compile(node).must_be_like %{
- GROUPING SET( "users"."name", "users"."bool" )
- }
- end
-
- it "should know how to generate paranthesis when supplied with many Dimensions" do
- group1 = Arel::Nodes::GroupingElement.new(@table[:name])
- group2 = Arel::Nodes::GroupingElement.new([@table[:bool], @table[:created_at]])
- node = Arel::Nodes::GroupingSet.new([group1, group2])
- compile(node).must_be_like %{
- GROUPING SET( ( "users"."name" ), ( "users"."bool", "users"."created_at" ) )
- }
- end
- end
-
- describe "Nodes::RollUp" do
- it "should know how to visit with array arguments" do
- node = Arel::Nodes::RollUp.new([@table[:name], @table[:bool]])
- compile(node).must_be_like %{
- ROLLUP( "users"."name", "users"."bool" )
- }
- end
-
- it "should know how to visit with CubeDimension Argument" do
- group = Arel::Nodes::GroupingElement.new([@table[:name], @table[:bool]])
- node = Arel::Nodes::RollUp.new(group)
- compile(node).must_be_like %{
- ROLLUP( "users"."name", "users"."bool" )
- }
- end
-
- it "should know how to generate paranthesis when supplied with many Dimensions" do
- group1 = Arel::Nodes::GroupingElement.new(@table[:name])
- group2 = Arel::Nodes::GroupingElement.new([@table[:bool], @table[:created_at]])
- node = Arel::Nodes::RollUp.new([group1, group2])
- compile(node).must_be_like %{
- ROLLUP( ( "users"."name" ), ( "users"."bool", "users"."created_at" ) )
- }
- end
- end
- end
- end
-end
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