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require 'test/helper'
class IOStreamTest < Test::Unit::TestCase
context "IOStream" do
should "be included in IO, File, Tempfile, and StringIO" do
[IO, File, Tempfile, StringIO].each do |klass|
assert klass.included_modules.include?(IOStream), "Not in #{klass}"
end
end
end
context "A file" do
setup do
@file = File.new(File.join(File.dirname(__FILE__), "fixtures", "5k.png"), 'rb')
end
teardown { @file.close }
context "that is sent #stream_to" do
context "and given a String" do
setup do
FileUtils.mkdir_p(File.join(ROOT, 'tmp'))
assert @result = @file.stream_to(File.join(ROOT, 'tmp', 'iostream.string.test'))
end
should "return a File" do
assert @result.is_a?(File)
end
should "contain the same data as the original file" do
@file.rewind; @result.rewind
assert_equal @file.read, @result.read
end
end
context "and given a Tempfile" do
setup do
tempfile = Tempfile.new('iostream.test')
tempfile.binmode
assert @result = @file.stream_to(tempfile)
end
should "return a Tempfile" do
assert @result.is_a?(Tempfile)
end
should "contain the same data as the original file" do
@file.rewind; @result.rewind
assert_equal @file.read, @result.read
end
end
end
context "that is sent #to_tempfile" do
setup do
assert @tempfile = @file.to_tempfile
end
should "convert it to a Tempfile" do
assert @tempfile.is_a?(Tempfile)
end
should "have the Tempfile contain the same data as the file" do
@file.rewind; @tempfile.rewind
assert_equal @file.read, @tempfile.read
end
end
end
end