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ruby--ruby/spec/ruby/library/stringio/reopen_spec.rb
2020-01-23 22:03:13 +09:00

298 lines
8.3 KiB
Ruby

require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "StringIO#reopen when passed [Object, Integer]" do
before :each do
@io = StringIO.new("example")
end
it "reopens self with the passed Object in the passed mode" do
@io.reopen("reopened", IO::RDONLY)
@io.closed_read?.should be_false
@io.closed_write?.should be_true
@io.string.should == "reopened"
@io.reopen("reopened, twice", IO::WRONLY)
@io.closed_read?.should be_true
@io.closed_write?.should be_false
@io.string.should == "reopened, twice"
@io.reopen("reopened, another time", IO::RDWR)
@io.closed_read?.should be_false
@io.closed_write?.should be_false
@io.string.should == "reopened, another time"
end
ruby_version_is ""..."2.8" do
# NOTE: WEIRD!
it "does not taint self when the passed Object was tainted" do
@io.reopen("reopened".taint, IO::RDONLY)
@io.tainted?.should be_false
@io.reopen("reopened".taint, IO::WRONLY)
@io.tainted?.should be_false
end
end
it "tries to convert the passed Object to a String using #to_str" do
obj = mock("to_str")
obj.should_receive(:to_str).and_return("to_str")
@io.reopen(obj, IO::RDWR)
@io.string.should == "to_str"
end
it "raises a TypeError when the passed Object can't be converted to a String" do
-> { @io.reopen(Object.new, IO::RDWR) }.should raise_error(TypeError)
end
it "raises an Errno::EACCES when trying to reopen self with a frozen String in write-mode" do
-> { @io.reopen("burn".freeze, IO::WRONLY) }.should raise_error(Errno::EACCES)
-> { @io.reopen("burn".freeze, IO::WRONLY | IO::APPEND) }.should raise_error(Errno::EACCES)
end
it "raises a #{frozen_error_class} when trying to reopen self with a frozen String in truncate-mode" do
-> { @io.reopen("burn".freeze, IO::RDONLY | IO::TRUNC) }.should raise_error(frozen_error_class)
end
it "does not raise IOError when passed a frozen String in read-mode" do
@io.reopen("burn".freeze, IO::RDONLY)
@io.string.should == "burn"
end
end
describe "StringIO#reopen when passed [Object, Object]" do
before :each do
@io = StringIO.new("example")
end
it "reopens self with the passed Object in the passed mode" do
@io.reopen("reopened", "r")
@io.closed_read?.should be_false
@io.closed_write?.should be_true
@io.string.should == "reopened"
@io.reopen("reopened, twice", "r+")
@io.closed_read?.should be_false
@io.closed_write?.should be_false
@io.string.should == "reopened, twice"
@io.reopen("reopened, another", "w+")
@io.closed_read?.should be_false
@io.closed_write?.should be_false
@io.string.should == ""
@io.reopen("reopened, another time", "r+")
@io.closed_read?.should be_false
@io.closed_write?.should be_false
@io.string.should == "reopened, another time"
end
it "truncates the passed String when opened in truncate mode" do
@io.reopen(str = "reopened", "w")
str.should == ""
end
ruby_version_is ""..."2.8" do
# NOTE: WEIRD!
it "does not taint self when the passed Object was tainted" do
@io.reopen("reopened".taint, "r")
@io.tainted?.should be_false
@io.reopen("reopened".taint, "w")
@io.tainted?.should be_false
end
end
it "tries to convert the passed Object to a String using #to_str" do
obj = mock("to_str")
obj.should_receive(:to_str).and_return("to_str")
@io.reopen(obj, "r")
@io.string.should == "to_str"
end
it "raises a TypeError when the passed Object can't be converted to a String using #to_str" do
-> { @io.reopen(Object.new, "r") }.should raise_error(TypeError)
end
it "resets self's position to 0" do
@io.read(5)
@io.reopen("reopened")
@io.pos.should eql(0)
end
it "resets self's line number to 0" do
@io.gets
@io.reopen("reopened")
@io.lineno.should eql(0)
end
it "tries to convert the passed mode Object to an Integer using #to_str" do
obj = mock("to_str")
obj.should_receive(:to_str).and_return("r")
@io.reopen("reopened", obj)
@io.closed_read?.should be_false
@io.closed_write?.should be_true
@io.string.should == "reopened"
end
it "raises an Errno::EACCES error when trying to reopen self with a frozen String in write-mode" do
-> { @io.reopen("burn".freeze, 'w') }.should raise_error(Errno::EACCES)
-> { @io.reopen("burn".freeze, 'w+') }.should raise_error(Errno::EACCES)
-> { @io.reopen("burn".freeze, 'a') }.should raise_error(Errno::EACCES)
-> { @io.reopen("burn".freeze, "r+") }.should raise_error(Errno::EACCES)
end
it "does not raise IOError if a frozen string is passed in read mode" do
@io.reopen("burn".freeze, "r")
@io.string.should == "burn"
end
end
describe "StringIO#reopen when passed [String]" do
before :each do
@io = StringIO.new("example")
end
it "reopens self with the passed String in read-write mode" do
@io.close
@io.reopen("reopened")
@io.closed_write?.should be_false
@io.closed_read?.should be_false
@io.string.should == "reopened"
end
ruby_version_is ""..."2.8" do
# NOTE: WEIRD!
it "does not taint self when the passed Object was tainted" do
@io.reopen("reopened".taint)
@io.tainted?.should be_false
end
end
it "resets self's position to 0" do
@io.read(5)
@io.reopen("reopened")
@io.pos.should eql(0)
end
it "resets self's line number to 0" do
@io.gets
@io.reopen("reopened")
@io.lineno.should eql(0)
end
end
describe "StringIO#reopen when passed [Object]" do
before :each do
@io = StringIO.new("example")
end
it "raises a TypeError when passed an Object that can't be converted to a StringIO" do
-> { @io.reopen(Object.new) }.should raise_error(TypeError)
end
it "does not try to convert the passed Object to a String using #to_str" do
obj = mock("not to_str")
obj.should_not_receive(:to_str)
-> { @io.reopen(obj) }.should raise_error(TypeError)
end
it "tries to convert the passed Object to a StringIO using #to_strio" do
obj = mock("to_strio")
obj.should_receive(:to_strio).and_return(StringIO.new("to_strio"))
@io.reopen(obj)
@io.string.should == "to_strio"
end
# NOTE: WEIRD!
ruby_version_is ""..."2.7" do
it "taints self when the passed Object was tainted" do
@io.reopen(StringIO.new("reopened").taint)
@io.tainted?.should be_true
end
end
end
describe "StringIO#reopen when passed no arguments" do
before :each do
@io = StringIO.new("example\nsecond line")
end
it "resets self's mode to read-write" do
@io.close
@io.reopen
@io.closed_read?.should be_false
@io.closed_write?.should be_false
end
it "resets self's position to 0" do
@io.read(5)
@io.reopen
@io.pos.should eql(0)
end
it "resets self's line number to 0" do
@io.gets
@io.reopen
@io.lineno.should eql(0)
end
end
# NOTE: Some reopen specs disabled due to MRI bugs. See:
# http://rubyforge.org/tracker/index.php?func=detail&aid=13919&group_id=426&atid=1698
# for details.
describe "StringIO#reopen" do
before :each do
@io = StringIO.new('hello','a')
end
# TODO: find out if this is really a bug
it "reopens a stream when given a String argument" do
@io.reopen('goodbye').should == @io
@io.string.should == 'goodbye'
@io << 'x'
@io.string.should == 'xoodbye'
end
it "reopens a stream in append mode when flagged as such" do
@io.reopen('goodbye', 'a').should == @io
@io.string.should == 'goodbye'
@io << 'x'
@io.string.should == 'goodbyex'
end
it "reopens and truncate when reopened in write mode" do
@io.reopen('goodbye', 'wb').should == @io
@io.string.should == ''
@io << 'x'
@io.string.should == 'x'
end
it "truncates the given string, not a copy" do
str = 'goodbye'
@io.reopen(str, 'w')
@io.string.should == ''
str.should == ''
end
ruby_version_is ""..."2.7" do
it "taints self if the provided StringIO argument is tainted" do
new_io = StringIO.new("tainted")
new_io.taint
@io.reopen(new_io)
@io.tainted?.should == true
end
end
it "does not truncate the content even when the StringIO argument is in the truncate mode" do
orig_io = StringIO.new("Original StringIO", IO::RDWR|IO::TRUNC)
orig_io.write("BLAH") # make sure the content is not empty
@io.reopen(orig_io)
@io.string.should == "BLAH"
end
end