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# -*- encoding: utf-8 -*-
require_relative '../../spec_helper'
require_relative 'fixtures/classes'
require_relative 'shared/readlines'
describe "IO#readlines" do
before :each do
@io = IOSpecs.io_fixture "lines.txt"
@orig_exteenc = Encoding.default_external
Encoding.default_external = Encoding::UTF_8
end
after :each do
@io.close unless @io.closed?
Encoding.default_external = @orig_exteenc
end
it "raises an IOError if the stream is closed" do
@io.close
lambda { @io.readlines }.should raise_error(IOError)
end
describe "when passed no arguments" do
before :each do
@sep, $/ = $/, " "
end
after :each do
$/ = @sep
end
it "returns an Array containing lines based on $/" do
@io.readlines.should == IOSpecs.lines_space_separator
end
end
describe "when passed no arguments" do
it "updates self's position" do
@io.readlines
@io.pos.should eql(137)
end
it "updates self's lineno based on the number of lines read" do
@io.readlines
@io.lineno.should eql(9)
end
it "does not change $_" do
$_ = "test"
@io.readlines
$_.should == "test"
end
it "returns an empty Array when self is at the end" do
@io.readlines.should == IOSpecs.lines
@io.readlines.should == []
end
end
describe "when passed nil" do
it "returns the remaining content as one line starting at the current position" do
@io.readlines(nil).should == [IOSpecs.lines.join]
end
end
describe "when passed an empty String" do
it "returns an Array containing all paragraphs" do
@io.readlines("").should == IOSpecs.paragraphs
end
end
describe "when passed a separator" do
it "returns an Array containing lines based on the separator" do
@io.readlines("r").should == IOSpecs.lines_r_separator
end
it "returns an empty Array when self is at the end" do
@io.readlines
@io.readlines("r").should == []
end
it "updates self's lineno based on the number of lines read" do
@io.readlines("r")
@io.lineno.should eql(5)
end
it "updates self's position based on the number of characters read" do
@io.readlines("r")
@io.pos.should eql(137)
end
it "does not change $_" do
$_ = "test"
@io.readlines("r")
$_.should == "test"
end
it "tries to convert the passed separator to a String using #to_str" do
obj = mock('to_str')
obj.stub!(:to_str).and_return("r")
@io.readlines(obj).should == IOSpecs.lines_r_separator
end
end
describe "when passed a string that starts with a |" do
it "gets data from the standard out of the subprocess" do
cmd = "|sh -c 'echo hello;echo line2'"
platform_is :windows do
cmd = "|cmd.exe /C echo hello&echo line2"
end
lines = IO.readlines(cmd)
lines.should == ["hello\n", "line2\n"]
end
with_feature :fork do
it "gets data from a fork when passed -" do
lines = IO.readlines("|-")
if lines # parent
lines.should == ["hello\n", "from a fork\n"]
else
puts "hello"
puts "from a fork"
exit!
end
end
end
end
end
describe "IO#readlines" do
before :each do
@name = tmp("io_readlines")
end
after :each do
rm_r @name
end
it "raises an IOError if the stream is opened for append only" do
lambda do
File.open(@name, fmode("a:utf-8")) { |f| f.readlines }
end.should raise_error(IOError)
end
it "raises an IOError if the stream is opened for write only" do
lambda do
File.open(@name, fmode("w:utf-8")) { |f| f.readlines }
end.should raise_error(IOError)
end
end
describe "IO.readlines" do
before :each do
@external = Encoding.default_external
Encoding.default_external = Encoding::UTF_8
@name = fixture __FILE__, "lines.txt"
ScratchPad.record []
end
after :each do
Encoding.default_external = @external
end
it "does not change $_" do
$_ = "test"
IO.readlines(@name)
$_.should == "test"
end
it_behaves_like :io_readlines, :readlines
it_behaves_like :io_readlines_options_19, :readlines
end
describe "IO.readlines" do
before :each do
@external = Encoding.default_external
@internal = Encoding.default_internal
@name = fixture __FILE__, "lines.txt"
@dollar_slash = $/
end
after :each do
Encoding.default_external = @external
Encoding.default_internal = @internal
$/ = @dollar_slash
end
it "encodes lines using the default external encoding" do
Encoding.default_external = Encoding::UTF_8
lines = IO.readlines(@name)
lines.all? { |s| s.encoding == Encoding::UTF_8 }.should be_true
end
it "encodes lines using the default internal encoding, when set" do
Encoding.default_external = Encoding::UTF_8
Encoding.default_internal = Encoding::UTF_16
$/ = $/.encode Encoding::UTF_16
lines = IO.readlines(@name)
lines.all? { |s| s.encoding == Encoding::UTF_16 }.should be_true
end
it "ignores the default internal encoding if the external encoding is ASCII-8BIT" do
Encoding.default_external = Encoding::ASCII_8BIT
Encoding.default_internal = Encoding::UTF_8
lines = IO.readlines(@name)
lines.all? { |s| s.encoding == Encoding::ASCII_8BIT }.should be_true
end
end
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