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require_relative "spec_helper"
describe "paged_operations plugin" do
before do
@db = Sequel.mock
@c = Class.new(Sequel::Model(@db[:albums]))
@c.plugin :paged_operations
@ds = @c.dataset
@db.sqls
@db.fetch = [[{:id=>1002}], [{:id=>2002}]]
@db.numrows = [1000, 1000, 2]
end
it "#paged_delete should delete using multiple queries" do
@ds.paged_delete.must_equal 2002
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"DELETE FROM albums WHERE (id < 1002)",
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"DELETE FROM albums WHERE (id < 2002)",
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"DELETE FROM albums"
]
end
it "#paged_update should update using multiple queries" do
@ds.paged_update(:x=>1).must_equal 2002
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = 1 WHERE (id < 1002)",
"SELECT id FROM albums WHERE (id >= 1002) ORDER BY id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = 1 WHERE ((id < 2002) AND (id >= 1002))",
"SELECT id FROM albums WHERE (id >= 2002) ORDER BY id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = 1 WHERE (id >= 2002)"
]
end
it "#paged_datasets should yield multiple datasets making up dataset" do
sqls = []
@ds.paged_datasets{|ds| sqls << ds.sql}
sqls.must_equal [
"SELECT * FROM albums WHERE (id < 1002)",
"SELECT * FROM albums WHERE ((id < 2002) AND (id >= 1002))",
"SELECT * FROM albums WHERE (id >= 2002)"
]
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"SELECT id FROM albums WHERE (id >= 1002) ORDER BY id LIMIT 1 OFFSET 1000",
"SELECT id FROM albums WHERE (id >= 2002) ORDER BY id LIMIT 1 OFFSET 1000",
]
end
it "#paged_datasets should support returning enum" do
enum = @ds.paged_datasets
enum.must_be_kind_of Enumerator
enum.map(&:sql).must_equal [
"SELECT * FROM albums WHERE (id < 1002)",
"SELECT * FROM albums WHERE ((id < 2002) AND (id >= 1002))",
"SELECT * FROM albums WHERE (id >= 2002)"
]
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"SELECT id FROM albums WHERE (id >= 1002) ORDER BY id LIMIT 1 OFFSET 1000",
"SELECT id FROM albums WHERE (id >= 2002) ORDER BY id LIMIT 1 OFFSET 1000",
]
end
it "#paged_delete should handle case where number of rows is less than page size" do
@db.fetch = []
@db.numrows = [2]
@ds.paged_delete.must_equal 2
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"DELETE FROM albums"
]
end
it "#paged_update should handle case where number of rows is less than page size" do
@db.fetch = []
@db.numrows = [2]
@ds.paged_update(:x=>1).must_equal 2
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = 1"
]
end
it "#paged_datasets should handle case where number of rows is less than page size" do
@db.fetch = []
@ds.paged_datasets.map(&:sql).must_equal ['SELECT * FROM albums']
@db.sqls.must_equal ["SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000"]
end
it "#paged_delete should respect existing filters" do
@ds.where{x > 3}.paged_delete.must_equal 2002
@db.sqls.must_equal [
"SELECT id FROM albums WHERE (x > 3) ORDER BY id LIMIT 1 OFFSET 1000",
"DELETE FROM albums WHERE ((x > 3) AND (id < 1002))",
"SELECT id FROM albums WHERE (x > 3) ORDER BY id LIMIT 1 OFFSET 1000",
"DELETE FROM albums WHERE ((x > 3) AND (id < 2002))",
"SELECT id FROM albums WHERE (x > 3) ORDER BY id LIMIT 1 OFFSET 1000",
"DELETE FROM albums WHERE (x > 3)"
]
end
it "#paged_update should respect existing filters" do
@ds.where{x > 3}.paged_update(:x=>1).must_equal 2002
@db.sqls.must_equal [
"SELECT id FROM albums WHERE (x > 3) ORDER BY id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = 1 WHERE ((x > 3) AND (id < 1002))",
"SELECT id FROM albums WHERE ((x > 3) AND (id >= 1002)) ORDER BY id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = 1 WHERE ((x > 3) AND (id < 2002) AND (id >= 1002))",
"SELECT id FROM albums WHERE ((x > 3) AND (id >= 2002)) ORDER BY id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = 1 WHERE ((x > 3) AND (id >= 2002))"
]
end
it "#paged_datasets should respect existing filters" do
@ds.where{x > 3}.paged_datasets.map(&:sql).must_equal [
"SELECT * FROM albums WHERE ((x > 3) AND (id < 1002))",
"SELECT * FROM albums WHERE ((x > 3) AND (id < 2002) AND (id >= 1002))",
"SELECT * FROM albums WHERE ((x > 3) AND (id >= 2002))"
]
@db.sqls.must_equal [
"SELECT id FROM albums WHERE (x > 3) ORDER BY id LIMIT 1 OFFSET 1000",
"SELECT id FROM albums WHERE ((x > 3) AND (id >= 1002)) ORDER BY id LIMIT 1 OFFSET 1000",
"SELECT id FROM albums WHERE ((x > 3) AND (id >= 2002)) ORDER BY id LIMIT 1 OFFSET 1000",
]
end
it "#paged_delete should support :rows_per_page option" do
@db.numrows = [4, 4, 2]
@ds.paged_delete(:rows_per_page=>4).must_equal 10
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 4",
"DELETE FROM albums WHERE (id < 1002)",
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 4",
"DELETE FROM albums WHERE (id < 2002)",
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 4",
"DELETE FROM albums"
]
end
it "#paged_update should support :rows_per_page option" do
@db.numrows = [4, 4, 2]
@ds.paged_update({:x=>1}, :rows_per_page=>4).must_equal 10
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 4",
"UPDATE albums SET x = 1 WHERE (id < 1002)",
"SELECT id FROM albums WHERE (id >= 1002) ORDER BY id LIMIT 1 OFFSET 4",
"UPDATE albums SET x = 1 WHERE ((id < 2002) AND (id >= 1002))",
"SELECT id FROM albums WHERE (id >= 2002) ORDER BY id LIMIT 1 OFFSET 4",
"UPDATE albums SET x = 1 WHERE (id >= 2002)"
]
end
it "#paged_datasets should support :rows_per_page option" do
@db.numrows = [4, 4, 2]
@ds.paged_datasets(:rows_per_page=>4).map(&:sql).must_equal [
"SELECT * FROM albums WHERE (id < 1002)",
"SELECT * FROM albums WHERE ((id < 2002) AND (id >= 1002))",
"SELECT * FROM albums WHERE (id >= 2002)"
]
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 4",
"SELECT id FROM albums WHERE (id >= 1002) ORDER BY id LIMIT 1 OFFSET 4",
"SELECT id FROM albums WHERE (id >= 2002) ORDER BY id LIMIT 1 OFFSET 4",
]
end
it "should raise error for invalid :rows_per_page option" do
proc{@ds.paged_datasets(:rows_per_page=>0){}}.must_raise Sequel::Error
proc{@ds.paged_datasets(:rows_per_page=>-1){}}.must_raise Sequel::Error
proc{@ds.paged_delete(:rows_per_page=>0)}.must_raise Sequel::Error
proc{@ds.paged_update({:x=>1}, :rows_per_page=>0)}.must_raise Sequel::Error
end
it "should raise error for dataset with limit" do
proc{@ds.limit(1).paged_delete}.must_raise Sequel::Error
proc{@ds.limit(1).paged_update(:x=>1)}.must_raise Sequel::Error
proc{@ds.limit(1).paged_datasets{}}.must_raise Sequel::Error
end
it "should raise error paged_delete for MSSQL with emulated offsets" do
db = Sequel.connect('mock://mssql')
def db.server_version(_=nil); 10000000; end
@c.dataset = db[:t]
ds = @c.dataset
proc{ds.paged_delete}.must_raise Sequel::Error
end
it "should raise error for DB2 with emulated offsets" do
@c.dataset = Sequel.connect('mock://db2')[:t]
ds = @c.dataset
proc{ds.paged_delete}.must_raise Sequel::Error
proc{ds.paged_update(:x=>1)}.must_raise Sequel::Error
proc{ds.paged_datasets{}}.must_raise Sequel::Error
end
it "should raise error paged_delete for Oracle with emulated offsets" do
db = Sequel.connect('mock://oracle')
def db.server_version(_=nil); 11020002; end
@c.dataset = db[:t]
ds = @c.dataset
proc{ds.paged_delete}.must_raise Sequel::Error
end
it "should raise error for dataset with offset" do
proc{@ds.offset(1).paged_delete}.must_raise Sequel::Error
proc{@ds.offset(1).paged_update(:x=>1)}.must_raise Sequel::Error
proc{@ds.offset(1).paged_datasets{}}.must_raise Sequel::Error
end
it "should raise error for model with composite primary key" do
@c.set_primary_key [:id, :x]
proc{@c.dataset.paged_delete}.must_raise Sequel::Error
proc{@c.dataset.paged_update(:x=>1)}.must_raise Sequel::Error
proc{@c.dataset.paged_datasets{}}.must_raise Sequel::Error
end
it "should raise error for model with no primary key" do
@c.no_primary_key
proc{@c.dataset.paged_delete}.must_raise Sequel::Error
proc{@c.dataset.paged_update(:x=>1)}.must_raise Sequel::Error
proc{@c.dataset.paged_datasets{}}.must_raise Sequel::Error
end
it "should offer paged_delete class method" do
@c.paged_delete.must_equal 2002
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"DELETE FROM albums WHERE (id < 1002)",
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"DELETE FROM albums WHERE (id < 2002)",
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"DELETE FROM albums"
]
end
it "should offer paged_update class method" do
@c.paged_update(:x=>1).must_equal 2002
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = 1 WHERE (id < 1002)",
"SELECT id FROM albums WHERE (id >= 1002) ORDER BY id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = 1 WHERE ((id < 2002) AND (id >= 1002))",
"SELECT id FROM albums WHERE (id >= 2002) ORDER BY id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = 1 WHERE (id >= 2002)"
]
end
it "should offer paged_datasets class method" do
@c.paged_datasets.map(&:sql).must_equal [
"SELECT * FROM albums WHERE (id < 1002)",
"SELECT * FROM albums WHERE ((id < 2002) AND (id >= 1002))",
"SELECT * FROM albums WHERE (id >= 2002)"
]
@db.sqls.must_equal [
"SELECT id FROM albums ORDER BY id LIMIT 1 OFFSET 1000",
"SELECT id FROM albums WHERE (id >= 1002) ORDER BY id LIMIT 1 OFFSET 1000",
"SELECT id FROM albums WHERE (id >= 2002) ORDER BY id LIMIT 1 OFFSET 1000",
]
end
end
describe "paged_operations plugin with joined dataset" do
before do
@db = Sequel.connect("mock://postgres")
@c = Class.new(Sequel::Model(@db[:albums]))
@c.plugin :paged_operations
@db.sqls
@db.fetch = [[{:id=>1002}], [{:id=>2002}]]
@db.numrows = [1000, 1000, 2]
@ds = @c.dataset.
qualify.
from(:albums, :artists).
where{albums[:id] =~ artists[:album_id]}.
with_quote_identifiers(false)
end
it "#paged_delete should use qualified columns when joining" do
@ds.paged_delete.must_equal 2002
@db.sqls.must_equal [
"SELECT albums.id FROM albums, artists WHERE (albums.id = artists.album_id) ORDER BY albums.id LIMIT 1 OFFSET 1000",
"DELETE FROM albums USING artists WHERE ((albums.id = artists.album_id) AND (albums.id < 1002))",
"SELECT albums.id FROM albums, artists WHERE (albums.id = artists.album_id) ORDER BY albums.id LIMIT 1 OFFSET 1000",
"DELETE FROM albums USING artists WHERE ((albums.id = artists.album_id) AND (albums.id < 2002))",
"SELECT albums.id FROM albums, artists WHERE (albums.id = artists.album_id) ORDER BY albums.id LIMIT 1 OFFSET 1000",
"DELETE FROM albums USING artists WHERE (albums.id = artists.album_id)"
]
end
it "#paged_update should update using multiple queries" do
@ds.paged_update({x: Sequel[:artists][:y]}).must_equal 2002
@db.sqls.must_equal [
"SELECT albums.id FROM albums, artists WHERE (albums.id = artists.album_id) ORDER BY albums.id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = artists.y FROM artists WHERE ((albums.id = artists.album_id) AND (albums.id < 1002))",
"SELECT albums.id FROM albums, artists WHERE ((albums.id = artists.album_id) AND (albums.id >= 1002)) ORDER BY albums.id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = artists.y FROM artists WHERE ((albums.id = artists.album_id) AND (albums.id < 2002) AND (albums.id >= 1002))",
"SELECT albums.id FROM albums, artists WHERE ((albums.id = artists.album_id) AND (albums.id >= 2002)) ORDER BY albums.id LIMIT 1 OFFSET 1000",
"UPDATE albums SET x = artists.y FROM artists WHERE ((albums.id = artists.album_id) AND (albums.id >= 2002))"
]
end
it "#paged_datasets should yield multiple datasets making up dataset" do
sqls = []
@ds.paged_datasets{|ds| sqls << ds.sql}
sqls.must_equal [
"SELECT albums.* FROM albums, artists WHERE ((albums.id = artists.album_id) AND (albums.id < 1002))",
"SELECT albums.* FROM albums, artists WHERE ((albums.id = artists.album_id) AND (albums.id < 2002) AND (albums.id >= 1002))",
"SELECT albums.* FROM albums, artists WHERE ((albums.id = artists.album_id) AND (albums.id >= 2002))"
]
@db.sqls.must_equal [
"SELECT albums.id FROM albums, artists WHERE (albums.id = artists.album_id) ORDER BY albums.id LIMIT 1 OFFSET 1000",
"SELECT albums.id FROM albums, artists WHERE ((albums.id = artists.album_id) AND (albums.id >= 1002)) ORDER BY albums.id LIMIT 1 OFFSET 1000",
"SELECT albums.id FROM albums, artists WHERE ((albums.id = artists.album_id) AND (albums.id >= 2002)) ORDER BY albums.id LIMIT 1 OFFSET 1000"
]
end
end
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