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require File.expand_path("../test_helper", __FILE__)
include Mongo
def read_and_write_stream(filename, read_length, opts={})
io = File.open(File.join(File.dirname(__FILE__), 'data', filename), 'r+b')
id = @grid.put(io, opts.merge!(:filename => filename + read_length.to_s))
file = @grid.get(id)
io.rewind
data = io.read
if data.respond_to?(:force_encoding)
data.force_encoding("binary")
end
read_data = ""
while(chunk = file.read(read_length))
read_data << chunk
break if chunk.empty?
end
assert_equal data.length, read_data.length
end
class GridTest < Test::Unit::TestCase
context "Tests:" do
setup do
@db = standard_connection.db(MONGO_TEST_DB)
@files = @db.collection('test-fs.files')
@chunks = @db.collection('test-fs.chunks')
end
teardown do
@files.remove
@chunks.remove
end
context "A one-chunk grid-stored file" do
setup do
@data = "GRIDDATA" * 5
@grid = Grid.new(@db, 'test-fs')
@id = @grid.put(@data, :filename => 'sample',
:metadata => {'app' => 'photos'})
end
should "retrieve the file" do
data = @grid.get(@id).data
assert_equal @data, data
end
end
context "A basic grid-stored file" do
setup do
@data = "GRIDDATA" * 50000
@grid = Grid.new(@db, 'test-fs')
@id = @grid.put(@data, :filename => 'sample',
:metadata => {'app' => 'photos'})
end
should "check existence" do
file = @grid.exist?(:filename => 'sample')
assert_equal 'sample', file['filename']
end
should "not be able to overwrite an exising file" do
assert_raise GridError do
@grid.put(@data, :filename => 'sample', :_id => @id, :safe => true)
end
end
should "return nil if it doesn't exist" do
assert_nil @grid.exist?(:metadata => 'foo')
end
should "retrieve the stored data" do
data = @grid.get(@id).data
assert_equal @data.length, data.length
end
should "have a unique index on chunks" do
assert @chunks.index_information['files_id_1_n_1']['unique']
end
should "store the filename" do
file = @grid.get(@id)
assert_equal 'sample', file.filename
end
should "store any relevant metadata" do
file = @grid.get(@id)
assert_equal 'photos', file.metadata['app']
end
should "delete the file and any chunks" do
@grid.delete(@id)
assert_raise GridFileNotFound do
@grid.get(@id)
end
assert_equal nil, @db['test-fs']['chunks'].find_one({:files_id => @id})
end
end
context "Filename not required" do
setup do
@data = "GRIDDATA" * 50000
@grid = Grid.new(@db, 'test-fs')
@metadata = {'app' => 'photos'}
end
should "store the file with the old filename api" do
id = @grid.put(@data, :filename => 'sample', :metadata => @metadata)
file = @grid.get(id)
assert_equal 'sample', file.filename
assert_equal @metadata, file.metadata
end
should "store without a filename" do
id = @grid.put(@data, :metadata => @metadata)
file = @grid.get(id)
assert_nil file.filename
file_doc = @files.find_one({'_id' => id})
assert !file_doc.has_key?('filename')
assert_equal @metadata, file.metadata
end
should "store with filename and metadata with the new api" do
id = @grid.put(@data, :filename => 'sample', :metadata => @metadata)
file = @grid.get(id)
assert_equal 'sample', file.filename
assert_equal @metadata, file.metadata
end
end
context "Writing arbitrary data fields" do
setup do
@data = "GRIDDATA" * 50000
@grid = Grid.new(@db, 'test-fs')
end
should "write random keys to the files collection" do
id = @grid.put(@data, :phrases => ["blimey", "ahoy!"])
file = @grid.get(id)
assert_equal ["blimey", "ahoy!"], file['phrases']
end
should "ignore special keys" do
id = silently do
@grid.put(@data, :file_length => 100, :phrase => "blimey")
end
file = @grid.get(id)
assert_equal "blimey", file['phrase']
assert_equal 400_000, file.file_length
end
end
context "Storing data with a length of zero" do
setup do
@grid = Grid.new(@db, 'test-fs')
@id = silently do
@grid.put('', :filename => 'sample', :metadata => {'app' => 'photos'})
end
end
should "return the zero length" do
data = @grid.get(@id)
assert_equal 0, data.read.length
end
end
context "Grid streaming: " do
setup do
@grid = Grid.new(@db, 'test-fs')
filename = 'sample_data'
@io = File.open(File.join(File.dirname(__FILE__), 'data', filename), 'r')
id = @grid.put(@io, :filename => filename)
@file = @grid.get(id)
@io.rewind
@data = @io.read
if @data.respond_to?(:force_encoding)
@data.force_encoding("binary")
end
end
should "be equal in length" do
@io.rewind
assert_equal @io.read.length, @file.read.length
end
should "read the file" do
read_data = ""
@file.each do |chunk|
read_data << chunk
end
assert_equal @data.length, read_data.length
end
should "read the file if no block is given" do
read_data = @file.each
assert_equal @data.length, read_data.length
end
end
context "Grid streaming an empty file: " do
setup do
@grid = Grid.new(@db, 'test-fs')
filename = 'empty_data'
@io = File.open(File.join(File.dirname(__FILE__), 'data', filename), 'r')
id = silently do
@grid.put(@io, :filename => filename)
end
@file = @grid.get(id)
@io.rewind
@data = @io.read
if @data.respond_to?(:force_encoding)
@data.force_encoding("binary")
end
end
should "be equal in length" do
@io.rewind
assert_equal @io.read.length, @file.read.length
end
should "read the file" do
read_data = ""
@file.each do |chunk|
read_data << chunk
end
assert_equal @data.length, read_data.length
end
should "read the file if no block is given" do
read_data = @file.each
assert_equal @data.length, read_data.length
end
end
context "Streaming: " do || {}
setup do
@grid = Grid.new(@db, 'test-fs')
end
should "put and get a small io object with a small chunk size" do
read_and_write_stream('small_data.txt', 1, :chunk_size => 2)
end
should "put and get an empty io object" do
silently do
read_and_write_stream('empty_data', 1)
end
end
should "put and get a small io object" do
read_and_write_stream('small_data.txt', 1)
end
should "put and get a large io object if reading less than the chunk size" do
read_and_write_stream('sample_data', 256 * 1024)
end
should "put and get a large io object if reading more than the chunk size" do
read_and_write_stream('sample_data', 300 * 1024)
end
end
end
end
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