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require_relative '../../spec_helper'
describe :io_set_encoding_write, shared: true do
it "sets the encodings to nil when they were set previously" do
@io = new_io @name, "#{@object}:ibm437:ibm866"
@io.set_encoding nil, nil
@io.external_encoding.should be_nil
@io.internal_encoding.should be_nil
end
it "sets the encodings to nil when the IO is built with no explicit encoding" do
@io = new_io @name, @object
# Checking our assumptions first
@io.external_encoding.should be_nil
@io.internal_encoding.should be_nil
@io.set_encoding nil, nil
@io.external_encoding.should be_nil
@io.internal_encoding.should be_nil
end
it "prevents the encodings from changing when Encoding defaults are changed" do
@io = new_io @name, "#{@object}:utf-8:us-ascii"
@io.set_encoding nil, nil
Encoding.default_external = Encoding::IBM437
Encoding.default_internal = Encoding::IBM866
@io.external_encoding.should be_nil
@io.internal_encoding.should be_nil
end
it "sets the encodings to the current Encoding defaults" do
@io = new_io @name, @object
Encoding.default_external = Encoding::IBM437
Encoding.default_internal = Encoding::IBM866
@io.set_encoding nil, nil
@io.external_encoding.should == Encoding::IBM437
@io.internal_encoding.should == Encoding::IBM866
end
end
describe "IO#set_encoding when passed nil, nil" do
before :each do
@external = Encoding.default_external
@internal = Encoding.default_internal
# The defaults
Encoding.default_external = Encoding::UTF_8
Encoding.default_internal = nil
@name = tmp('io_set_encoding.txt')
touch(@name)
end
after :each do
Encoding.default_external = @external
Encoding.default_internal = @internal
@io.close if @io and not @io.closed?
rm_r @name
end
describe "with 'r' mode" do
it "sets the encodings to the current Encoding defaults" do
@io = new_io @name, "r"
Encoding.default_external = Encoding::IBM437
Encoding.default_internal = Encoding::IBM866
@io.set_encoding nil, nil
@io.external_encoding.should equal(Encoding::IBM437)
@io.internal_encoding.should equal(Encoding::IBM866)
end
it "prevents the #internal_encoding from changing when Encoding.default_internal is changed" do
@io = new_io @name, "r"
@io.set_encoding nil, nil
Encoding.default_internal = Encoding::IBM437
@io.internal_encoding.should be_nil
end
it "allows the #external_encoding to change when Encoding.default_external is changed" do
@io = new_io @name, "r"
@io.set_encoding nil, nil
Encoding.default_external = Encoding::IBM437
@io.external_encoding.should equal(Encoding::IBM437)
end
end
describe "with 'rb' mode" do
it "returns Encoding.default_external" do
@io = new_io @name, "rb"
@io.external_encoding.should equal(Encoding::BINARY)
@io.set_encoding nil, nil
@io.external_encoding.should equal(Encoding.default_external)
end
end
describe "with 'r+' mode" do
it_behaves_like :io_set_encoding_write, nil, "r+"
end
describe "with 'w' mode" do
it_behaves_like :io_set_encoding_write, nil, "w"
end
describe "with 'w+' mode" do
it_behaves_like :io_set_encoding_write, nil, "w+"
end
describe "with 'a' mode" do
it_behaves_like :io_set_encoding_write, nil, "a"
end
describe "with 'a+' mode" do
it_behaves_like :io_set_encoding_write, nil, "a+"
end
describe "with standard IOs" do
it "correctly resets them" do
STDOUT.external_encoding.should == nil
STDOUT.internal_encoding.should == nil
begin
STDOUT.set_encoding(Encoding::US_ASCII, Encoding::ISO_8859_1)
ensure
STDOUT.set_encoding(nil, nil)
end
STDOUT.external_encoding.should == nil
STDOUT.internal_encoding.should == nil
end
end
end
describe "IO#set_encoding" do
before :each do
@name = tmp('io_set_encoding.txt')
touch(@name)
@io = new_io @name
end
after :each do
@io.close unless @io.closed?
rm_r @name
end
it "returns self" do
@io.set_encoding(Encoding::UTF_8).should equal(@io)
end
it "sets the external encoding when passed an Encoding argument" do
@io.set_encoding(Encoding::UTF_8)
@io.external_encoding.should == Encoding::UTF_8
@io.internal_encoding.should be_nil
end
it "sets the external and internal encoding when passed two Encoding arguments" do
@io.set_encoding(Encoding::UTF_8, Encoding::UTF_16BE)
@io.external_encoding.should == Encoding::UTF_8
@io.internal_encoding.should == Encoding::UTF_16BE
end
it "sets the external encoding when passed the name of an Encoding" do
@io.set_encoding("utf-8")
@io.external_encoding.should == Encoding::UTF_8
@io.internal_encoding.should be_nil
end
it "ignores the internal encoding if the same as external when passed Encoding objects" do
@io.set_encoding(Encoding::UTF_8, Encoding::UTF_8)
@io.external_encoding.should == Encoding::UTF_8
@io.internal_encoding.should be_nil
end
it "ignores the internal encoding if the same as external when passed encoding names separated by ':'" do
@io.set_encoding("utf-8:utf-8")
@io.external_encoding.should == Encoding::UTF_8
@io.internal_encoding.should be_nil
end
it "sets the external and internal encoding when passed the names of Encodings separated by ':'" do
@io.set_encoding("utf-8:utf-16be")
@io.external_encoding.should == Encoding::UTF_8
@io.internal_encoding.should == Encoding::UTF_16BE
end
it "sets the external and internal encoding when passed two String arguments" do
@io.set_encoding("utf-8", "utf-16be")
@io.external_encoding.should == Encoding::UTF_8
@io.internal_encoding.should == Encoding::UTF_16BE
end
it "calls #to_str to convert an abject to a String" do
obj = mock("io_set_encoding")
obj.should_receive(:to_str).and_return("utf-8:utf-16be")
@io.set_encoding(obj)
@io.external_encoding.should == Encoding::UTF_8
@io.internal_encoding.should == Encoding::UTF_16BE
end
it "calls #to_str to convert the second argument to a String" do
obj = mock("io_set_encoding")
obj.should_receive(:to_str).at_least(1).times.and_return("utf-16be")
@io.set_encoding(Encoding::UTF_8, obj)
@io.external_encoding.should == Encoding::UTF_8
@io.internal_encoding.should == Encoding::UTF_16BE
end
it "saves encoding options passed as a hash in the last argument" do
File.write(@name, "\xff")
io = File.open(@name)
io.set_encoding(Encoding::EUC_JP, Encoding::SHIFT_JIS, invalid: :replace, replace: ".")
io.read.should == "."
ensure
io.close
end
it "raises ArgumentError when no arguments are given" do
-> { @io.set_encoding() }.should raise_error(ArgumentError)
end
it "raises ArgumentError when too many arguments are given" do
-> { @io.set_encoding(1, 2, 3) }.should raise_error(ArgumentError)
end
end
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