mongo-ruby-driver/test/cursor_test.rb

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require File.expand_path("../test_helper", __FILE__)
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require 'logger'
class CursorTest < Test::Unit::TestCase
include Mongo
include Mongo::Constants
@@connection = standard_connection
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@@db = @@connection.db(MONGO_TEST_DB)
@@coll = @@db.collection('test')
@@version = @@connection.server_version
def setup
@@coll.remove
@@coll.insert('a' => 1) # collection not created until it's used
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@@coll_full_name = "#{MONGO_TEST_DB}.test"
end
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def test_alive
batch = []
5000.times do |n|
batch << {:a => n}
end
@@coll.insert(batch)
cursor = @@coll.find
assert !cursor.alive?
cursor.next
assert cursor.alive?
cursor.close
assert !cursor.alive?
@@coll.remove
end
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def test_add_and_remove_options
c = @@coll.find
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assert_equal 0, c.options & OP_QUERY_EXHAUST
c.add_option(OP_QUERY_EXHAUST)
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assert_equal OP_QUERY_EXHAUST, c.options & OP_QUERY_EXHAUST
c.remove_option(OP_QUERY_EXHAUST)
assert_equal 0, c.options & OP_QUERY_EXHAUST
c.next
assert_raise Mongo::InvalidOperation do
c.add_option(OP_QUERY_EXHAUST)
end
assert_raise Mongo::InvalidOperation do
c.add_option(OP_QUERY_EXHAUST)
end
end
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def test_exhaust
if @@version >= "2.0"
@@coll.remove
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data = "1" * 10_000
5000.times do |n|
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@@coll.insert({:n => n, :data => data})
end
c = Cursor.new(@@coll)
c.add_option(OP_QUERY_EXHAUST)
assert_equal @@coll.count, c.to_a.size
assert c.closed?
c = Cursor.new(@@coll)
c.add_option(OP_QUERY_EXHAUST)
4999.times do
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c.next
end
assert c.has_next?
assert c.next
assert !c.has_next?
assert c.closed?
@@coll.remove
end
end
def test_inspect
selector = {:a => 1}
cursor = @@coll.find(selector)
assert_equal "<Mongo::Cursor:0x#{cursor.object_id.to_s(16)} namespace='#{@@db.name}.#{@@coll.name}' " +
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"@selector=#{selector.inspect} @cursor_id=#{cursor.cursor_id}>", cursor.inspect
end
def test_explain
cursor = @@coll.find('a' => 1)
explaination = cursor.explain
assert_not_nil explaination['cursor']
assert_kind_of Numeric, explaination['n']
assert_kind_of Numeric, explaination['millis']
assert_kind_of Numeric, explaination['nscanned']
end
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def test_count
@@coll.remove
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assert_equal 0, @@coll.find().count()
10.times do |i|
@@coll.save("x" => i)
end
assert_equal 10, @@coll.find().count()
assert_kind_of Integer, @@coll.find().count()
assert_equal 10, @@coll.find({}, :limit => 5).count()
assert_equal 10, @@coll.find({}, :skip => 5).count()
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assert_equal 5, @@coll.find({}, :limit => 5).count(true)
assert_equal 5, @@coll.find({}, :skip => 5).count(true)
assert_equal 2, @@coll.find({}, :skip => 5, :limit => 2).count(true)
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assert_equal 1, @@coll.find({"x" => 1}).count()
assert_equal 5, @@coll.find({"x" => {"$lt" => 5}}).count()
a = @@coll.find()
b = a.count()
a.each do |doc|
break
end
assert_equal b, a.count()
assert_equal 0, @@db['acollectionthatdoesn'].count()
end
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def test_sort
@@coll.remove
5.times{|x| @@coll.insert({"age" => x}) }
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assert_kind_of Cursor, @@coll.find().sort(:age, 1)
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assert_equal 0, @@coll.find().sort(:age, 1).next_document["age"]
assert_equal 4, @@coll.find().sort(:age, -1).next_document["age"]
assert_equal 0, @@coll.find().sort([["age", :asc]]).next_document["age"]
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assert_kind_of Cursor, @@coll.find().sort([[:age, -1], [:b, 1]])
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assert_equal 4, @@coll.find().sort(:age, 1).sort(:age, -1).next_document["age"]
assert_equal 0, @@coll.find().sort(:age, -1).sort(:age, 1).next_document["age"]
assert_equal 4, @@coll.find().sort([:age, :asc]).sort(:age, -1).next_document["age"]
assert_equal 0, @@coll.find().sort([:age, :desc]).sort(:age, 1).next_document["age"]
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cursor = @@coll.find()
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cursor.next_document
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assert_raise InvalidOperation do
cursor.sort(["age"])
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end
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assert_raise InvalidSortValueError do
@@coll.find().sort(:age, 25).next_document
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end
assert_raise InvalidSortValueError do
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@@coll.find().sort(25).next_document
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end
end
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def test_sort_date
@@coll.remove
5.times{|x| @@coll.insert({"created_at" => Time.utc(2000 + x)}) }
assert_equal 2000, @@coll.find().sort(:created_at, :asc).next_document["created_at"].year
assert_equal 2004, @@coll.find().sort(:created_at, :desc).next_document["created_at"].year
assert_equal 2000, @@coll.find().sort([:created_at, :asc]).next_document["created_at"].year
assert_equal 2004, @@coll.find().sort([:created_at, :desc]).next_document["created_at"].year
assert_equal 2000, @@coll.find().sort([[:created_at, :asc]]).next_document["created_at"].year
assert_equal 2004, @@coll.find().sort([[:created_at, :desc]]).next_document["created_at"].year
end
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def test_sort_min_max_keys
@@coll.remove
@@coll.insert({"n" => 1000000})
@@coll.insert({"n" => -1000000})
@@coll.insert({"n" => MaxKey.new})
@@coll.insert({"n" => MinKey.new})
results = @@coll.find.sort([:n, :asc]).to_a
assert_equal MinKey.new, results[0]['n']
assert_equal(-1000000, results[1]['n'])
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assert_equal 1000000, results[2]['n']
assert_equal MaxKey.new, results[3]['n']
end
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def test_id_range_queries
@@coll.remove
t1 = Time.now
t1_id = ObjectId.from_time(t1)
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@@coll.save({:t => 't1'})
@@coll.save({:t => 't1'})
@@coll.save({:t => 't1'})
sleep(2)
t2 = Time.now
t2_id = ObjectId.from_time(t2)
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@@coll.save({:t => 't2'})
@@coll.save({:t => 't2'})
@@coll.save({:t => 't2'})
assert_equal 3, @@coll.find({'_id' => {'$gt' => t1_id, '$lt' => t2_id}}).count
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@@coll.find({'_id' => {'$gt' => t2_id}}).each do |doc|
assert_equal 't2', doc['t']
end
end
def test_limit
@@coll.remove
10.times do |i|
@@coll.save("x" => i)
end
assert_equal 10, @@coll.find().count()
results = @@coll.find().limit(5).to_a
assert_equal 5, results.length
end
def test_timeout_options
cursor = Cursor.new(@@coll)
assert_equal true, cursor.timeout
cursor = @@coll.find
assert_equal true, cursor.timeout
cursor = @@coll.find({}, :timeout => nil)
assert_equal true, cursor.timeout
cursor = Cursor.new(@@coll, :timeout => false)
assert_equal false, cursor.timeout
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@@coll.find({}, :timeout => false) do |c|
assert_equal false, c.timeout
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end
end
def test_timeout
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opts = Cursor.new(@@coll).options
assert_equal 0, opts & Mongo::Constants::OP_QUERY_NO_CURSOR_TIMEOUT
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opts = Cursor.new(@@coll, :timeout => false).options
assert_equal Mongo::Constants::OP_QUERY_NO_CURSOR_TIMEOUT,
opts & Mongo::Constants::OP_QUERY_NO_CURSOR_TIMEOUT
end
def test_limit_exceptions
cursor = @@coll.find()
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cursor.next_document
assert_raise InvalidOperation, "Cannot modify the query once it has been run or closed." do
cursor.limit(1)
end
cursor = @@coll.find()
cursor.close
assert_raise InvalidOperation, "Cannot modify the query once it has been run or closed." do
cursor.limit(1)
end
end
def test_skip
@@coll.remove
10.times do |i|
@@coll.save("x" => i)
end
assert_equal 10, @@coll.find().count()
all_results = @@coll.find().to_a
skip_results = @@coll.find().skip(2).to_a
assert_equal 10, all_results.length
assert_equal 8, skip_results.length
assert_equal all_results.slice(2...10), skip_results
end
def test_skip_exceptions
cursor = @@coll.find()
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cursor.next_document
assert_raise InvalidOperation, "Cannot modify the query once it has been run or closed." do
cursor.skip(1)
end
cursor = @@coll.find()
cursor.close
assert_raise InvalidOperation, "Cannot modify the query once it has been run or closed." do
cursor.skip(1)
end
end
def test_limit_skip_chaining
@@coll.remove
10.times do |i|
@@coll.save("x" => i)
end
all_results = @@coll.find().to_a
limited_skip_results = @@coll.find().limit(5).skip(3).to_a
assert_equal all_results.slice(3...8), limited_skip_results
end
def test_close_no_query_sent
begin
cursor = @@coll.find('a' => 1)
cursor.close
assert cursor.closed?
rescue => ex
fail ex.to_s
end
end
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def test_refill_via_get_more
assert_equal 1, @@coll.count
1000.times { |i|
assert_equal 1 + i, @@coll.count
@@coll.insert('a' => i)
}
assert_equal 1001, @@coll.count
count = 0
@@coll.find.each { |obj|
count += obj['a']
}
assert_equal 1001, @@coll.count
# do the same thing again for debugging
assert_equal 1001, @@coll.count
count2 = 0
@@coll.find.each { |obj|
count2 += obj['a']
}
assert_equal 1001, @@coll.count
assert_equal count, count2
assert_equal 499501, count
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end
def test_refill_via_get_more_alt_coll
coll = @@db.collection('test-alt-coll')
coll.remove
coll.insert('a' => 1) # collection not created until it's used
assert_equal 1, coll.count
1000.times { |i|
assert_equal 1 + i, coll.count
coll.insert('a' => i)
}
assert_equal 1001, coll.count
count = 0
coll.find.each { |obj|
count += obj['a']
}
assert_equal 1001, coll.count
# do the same thing again for debugging
assert_equal 1001, coll.count
count2 = 0
coll.find.each { |obj|
count2 += obj['a']
}
assert_equal 1001, coll.count
assert_equal count, count2
assert_equal 499501, count
end
def test_close_after_query_sent
begin
cursor = @@coll.find('a' => 1)
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cursor.next_document
cursor.close
assert cursor.closed?
rescue => ex
fail ex.to_s
end
end
def test_kill_cursors
@@coll.drop
client_cursors = @@db.command("cursorInfo" => 1)["clientCursors_size"]
10000.times do |i|
@@coll.insert("i" => i)
end
assert_equal(client_cursors,
@@db.command("cursorInfo" => 1)["clientCursors_size"])
10.times do |i|
@@coll.find_one()
end
assert_equal(client_cursors,
@@db.command("cursorInfo" => 1)["clientCursors_size"])
10.times do |i|
a = @@coll.find()
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a.next_document
a.close()
end
assert_equal(client_cursors,
@@db.command("cursorInfo" => 1)["clientCursors_size"])
a = @@coll.find()
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a.next_document
assert_not_equal(client_cursors,
@@db.command("cursorInfo" => 1)["clientCursors_size"])
a.close()
assert_equal(client_cursors,
@@db.command("cursorInfo" => 1)["clientCursors_size"])
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a = @@coll.find({}, :limit => 10).next_document
assert_equal(client_cursors,
@@db.command("cursorInfo" => 1)["clientCursors_size"])
@@coll.find() do |cursor|
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cursor.next_document
end
assert_equal(client_cursors,
@@db.command("cursorInfo" => 1)["clientCursors_size"])
@@coll.find() { |cursor|
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cursor.next_document
}
assert_equal(client_cursors,
@@db.command("cursorInfo" => 1)["clientCursors_size"])
end
def test_count_with_fields
@@coll.remove
@@coll.save("x" => 1)
if @@version < "1.1.3"
assert_equal(0, @@coll.find({}, :fields => ["a"]).count())
else
assert_equal(1, @@coll.find({}, :fields => ["a"]).count())
end
end
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def test_has_next
@@coll.remove
200.times do |n|
@@coll.save("x" => n)
end
cursor = @@coll.find
n = 0
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while cursor.has_next?
assert cursor.next
n += 1
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end
assert_equal n, 200
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assert_equal false, cursor.has_next?
end
def test_cursor_invalid
@@coll.remove
10000.times do |n|
@@coll.insert({:a => n})
end
cursor = @@coll.find({})
assert_raise_error Mongo::OperationFailure, "CURSOR_NOT_FOUND" do
9999.times do
cursor.next_document
cursor.instance_variable_set(:@cursor_id, 1234567890)
end
end
end
def test_enumberables
@@coll.remove
100.times do |n|
@@coll.insert({:a => n})
end
assert_equal 100, @@coll.find.to_a.length
assert_equal 100, @@coll.find.to_set.length
cursor = @@coll.find
50.times { |n| cursor.next_document }
assert_equal 50, cursor.to_a.length
end
def test_rewind
@@coll.remove
100.times do |n|
@@coll.insert({:a => n})
end
cursor = @@coll.find
cursor.to_a
assert_equal [], cursor.map {|doc| doc }
cursor.rewind!
assert_equal 100, cursor.map {|doc| doc }.length
cursor.rewind!
5.times { cursor.next_document }
cursor.rewind!
assert_equal 100, cursor.map {|doc| doc }.length
end
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def test_transformer
transformer = Proc.new { |doc| doc }
cursor = Cursor.new(@@coll, :transformer => transformer)
assert_equal(transformer, cursor.transformer)
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end
def test_instance_transformation_with_next
klass = Struct.new(:id, :a)
transformer = Proc.new { |doc| klass.new(doc['_id'], doc['a']) }
cursor = Cursor.new(@@coll, :transformer => transformer)
instance = cursor.next
assert_instance_of(klass, instance)
assert_instance_of(BSON::ObjectId, instance.id)
assert_equal(1, instance.a)
end
def test_instance_transformation_with_each
klass = Struct.new(:id, :a)
transformer = Proc.new { |doc| klass.new(doc['_id'], doc['a']) }
cursor = Cursor.new(@@coll, :transformer => transformer)
cursor.each do |instance|
assert_instance_of(klass, instance)
end
end
end