mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
67 lines
1.8 KiB
Ruby
67 lines
1.8 KiB
Ruby
require_relative '../../spec_helper'
|
|
require_relative 'fixtures/classes'
|
|
|
|
describe "StringIO#seek" do
|
|
before :each do
|
|
@io = StringIO.new("12345678")
|
|
end
|
|
|
|
it "seeks from the current position when whence is IO::SEEK_CUR" do
|
|
@io.pos = 1
|
|
@io.seek(1, IO::SEEK_CUR)
|
|
@io.pos.should eql(2)
|
|
|
|
@io.seek(-1, IO::SEEK_CUR)
|
|
@io.pos.should eql(1)
|
|
end
|
|
|
|
it "seeks from the end of self when whence is IO::SEEK_END" do
|
|
@io.seek(3, IO::SEEK_END)
|
|
@io.pos.should eql(11) # Outside of the StringIO's content
|
|
|
|
@io.seek(-2, IO::SEEK_END)
|
|
@io.pos.should eql(6)
|
|
end
|
|
|
|
it "seeks to an absolute position when whence is IO::SEEK_SET" do
|
|
@io.seek(5, IO::SEEK_SET)
|
|
@io.pos.should == 5
|
|
|
|
@io.pos = 3
|
|
@io.seek(5, IO::SEEK_SET)
|
|
@io.pos.should == 5
|
|
end
|
|
|
|
it "raises an Errno::EINVAL error on negative amounts when whence is IO::SEEK_SET" do
|
|
-> { @io.seek(-5, IO::SEEK_SET) }.should raise_error(Errno::EINVAL)
|
|
end
|
|
|
|
it "raises an Errno::EINVAL error on incorrect whence argument" do
|
|
-> { @io.seek(0, 3) }.should raise_error(Errno::EINVAL)
|
|
-> { @io.seek(0, -1) }.should raise_error(Errno::EINVAL)
|
|
-> { @io.seek(0, 2**16) }.should raise_error(Errno::EINVAL)
|
|
-> { @io.seek(0, -2**16) }.should raise_error(Errno::EINVAL)
|
|
end
|
|
|
|
it "tries to convert the passed Object to a String using #to_int" do
|
|
obj = mock("to_int")
|
|
obj.should_receive(:to_int).and_return(2)
|
|
@io.seek(obj)
|
|
@io.pos.should eql(2)
|
|
end
|
|
|
|
it "raises a TypeError when the passed Object can't be converted to an Integer" do
|
|
-> { @io.seek(Object.new) }.should raise_error(TypeError)
|
|
end
|
|
end
|
|
|
|
describe "StringIO#seek when self is closed" do
|
|
before :each do
|
|
@io = StringIO.new("example")
|
|
@io.close
|
|
end
|
|
|
|
it "raises an IOError" do
|
|
-> { @io.seek(5) }.should raise_error(IOError)
|
|
end
|
|
end
|