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401b64c4e8
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62656 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
321 lines
8.6 KiB
Ruby
321 lines
8.6 KiB
Ruby
# -*- encoding: utf-8 -*-
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require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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require_relative 'shared/gets_ascii'
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describe "IO#gets" do
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it_behaves_like :io_gets_ascii, :gets
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end
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describe "IO#gets" do
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before :each do
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@io = IOSpecs.io_fixture "lines.txt"
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@count = 0
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end
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after :each do
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@io.close if @io
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end
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it "assigns the returned line to $_" do
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IOSpecs.lines.each do |line|
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@io.gets
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$_.should == line
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end
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end
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it "returns nil if called at the end of the stream" do
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IOSpecs.lines.length.times { @io.gets }
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@io.gets.should == nil
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end
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it "raises IOError on closed stream" do
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lambda { IOSpecs.closed_io.gets }.should raise_error(IOError)
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end
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describe "with no separator" do
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it "returns the next line of string that is separated by $/" do
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IOSpecs.lines.each { |line| line.should == @io.gets }
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end
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it "returns tainted strings" do
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while line = @io.gets
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line.tainted?.should == true
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end
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end
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it "updates lineno with each invocation" do
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while @io.gets
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@io.lineno.should == @count += 1
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end
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end
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it "updates $. with each invocation" do
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while @io.gets
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$..should == @count += 1
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end
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end
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end
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describe "with nil separator" do
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it "returns the entire contents" do
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@io.gets(nil).should == IOSpecs.lines.join("")
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end
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it "returns tainted strings" do
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while line = @io.gets(nil)
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line.tainted?.should == true
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end
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end
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it "updates lineno with each invocation" do
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while @io.gets(nil)
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@io.lineno.should == @count += 1
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end
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end
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it "updates $. with each invocation" do
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while @io.gets(nil)
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$..should == @count += 1
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end
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end
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end
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describe "with an empty String separator" do
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# Two successive newlines in the input separate paragraphs.
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# When there are more than two successive newlines, only two are kept.
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it "returns the next paragraph" do
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@io.gets("").should == IOSpecs.lines[0,3].join("")
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@io.gets("").should == IOSpecs.lines[4,3].join("")
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@io.gets("").should == IOSpecs.lines[7,2].join("")
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end
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it "reads until the beginning of the next paragraph" do
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# There are three newlines between the first and second paragraph
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@io.gets("")
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@io.gets.should == IOSpecs.lines[4]
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end
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it "returns tainted strings" do
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while line = @io.gets("")
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line.tainted?.should == true
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end
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end
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it "updates lineno with each invocation" do
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while @io.gets("")
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@io.lineno.should == @count += 1
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end
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end
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it "updates $. with each invocation" do
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while @io.gets("")
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$..should == @count += 1
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end
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end
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end
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describe "with an arbitrary String separator" do
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it "reads up to and including the separator" do
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@io.gets("la linea").should == "Voici la ligne une.\nQui \303\250 la linea"
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end
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it "returns tainted strings" do
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while line = @io.gets("la")
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line.tainted?.should == true
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end
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end
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it "updates lineno with each invocation" do
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while (@io.gets("la"))
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@io.lineno.should == @count += 1
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end
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end
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it "updates $. with each invocation" do
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while @io.gets("la")
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$..should == @count += 1
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end
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end
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end
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ruby_version_is "2.4" do
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describe "when passed chomp" do
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it "returns the first line without a trailing newline character" do
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@io.gets(chomp: true).should == IOSpecs.lines_without_newline_characters[0]
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end
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end
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end
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end
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describe "IO#gets" do
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before :each do
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@name = tmp("io_gets")
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end
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after :each do
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rm_r @name
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end
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it "raises an IOError if the stream is opened for append only" do
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lambda { File.open(@name, fmode("a:utf-8")) { |f| f.gets } }.should raise_error(IOError)
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end
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it "raises an IOError if the stream is opened for writing only" do
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lambda { File.open(@name, fmode("w:utf-8")) { |f| f.gets } }.should raise_error(IOError)
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end
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end
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describe "IO#gets" do
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before :each do
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@name = tmp("io_gets")
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touch(@name) { |f| f.write "one\n\ntwo\n\nthree\nfour\n" }
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@io = new_io @name, fmode("r:utf-8")
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end
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after :each do
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@io.close if @io
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rm_r @name
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end
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it "calls #to_int to convert a single object argument to an Integer limit" do
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obj = mock("io gets limit")
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obj.should_receive(:to_int).and_return(6)
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@io.gets(obj).should == "one\n"
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end
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it "calls #to_int to convert the second object argument to an Integer limit" do
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obj = mock("io gets limit")
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obj.should_receive(:to_int).and_return(2)
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@io.gets(nil, obj).should == "on"
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end
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it "calls #to_str to convert the first argument to a String when passed a limit" do
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obj = mock("io gets separator")
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obj.should_receive(:to_str).and_return($/)
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@io.gets(obj, 5).should == "one\n"
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end
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it "reads to the default separator when passed a single argument greater than the number of bytes to the separator" do
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@io.gets(6).should == "one\n"
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end
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it "reads limit bytes when passed a single argument less than the number of bytes to the default separator" do
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@io.gets(3).should == "one"
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end
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it "reads limit bytes when passed nil and a limit" do
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@io.gets(nil, 6).should == "one\n\nt"
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end
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it "reads all bytes when the limit is higher than the available bytes" do
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@io.gets(nil, 100).should == "one\n\ntwo\n\nthree\nfour\n"
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end
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it "reads until the next paragraph when passed '' and a limit greater than the next paragraph" do
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@io.gets("", 6).should == "one\n\n"
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end
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it "reads limit bytes when passed '' and a limit less than the next paragraph" do
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@io.gets("", 3).should == "one"
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end
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it "reads all bytes when pass a separator and reading more than all bytes" do
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@io.gets("\t", 100).should == "one\n\ntwo\n\nthree\nfour\n"
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end
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end
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describe "IO#gets" do
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before :each do
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@name = tmp("io_gets")
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# create data "朝日" + "\xE3\x81" * 100 to avoid utf-8 conflicts
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data = "朝日" + ([227,129].pack('C*') * 100).force_encoding('utf-8')
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touch(@name) { |f| f.write data }
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@io = new_io @name, fmode("r:utf-8")
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end
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after :each do
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@io.close if @io
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rm_r @name
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end
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it "reads limit bytes and extra bytes when limit is reached not at character boundary" do
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[@io.gets(1), @io.gets(1)].should == ["朝", "日"]
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end
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it "read limit bytes and extra bytes with maximum of 16" do
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# create str "朝日\xE3" + "\x81\xE3" * 8 to avoid utf-8 conflicts
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str = "朝日" + ([227] + [129,227] * 8).pack('C*').force_encoding('utf-8')
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@io.gets(7).should == str
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end
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end
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describe "IO#gets" do
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before :each do
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@external = Encoding.default_external
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@internal = Encoding.default_internal
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Encoding.default_external = Encoding::UTF_8
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Encoding.default_internal = nil
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@name = tmp("io_gets")
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touch(@name) { |f| f.write "line" }
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end
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after :each do
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@io.close if @io
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rm_r @name
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Encoding.default_external = @external
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Encoding.default_internal = @internal
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end
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it "uses the default external encoding" do
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@io = new_io @name, 'r'
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@io.gets.encoding.should == Encoding::UTF_8
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end
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it "uses the IO object's external encoding, when set" do
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@io = new_io @name, 'r'
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@io.set_encoding Encoding::US_ASCII
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@io.gets.encoding.should == Encoding::US_ASCII
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end
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it "transcodes into the default internal encoding" do
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Encoding.default_internal = Encoding::US_ASCII
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@io = new_io @name, 'r'
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@io.gets.encoding.should == Encoding::US_ASCII
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end
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it "transcodes into the IO object's internal encoding, when set" do
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Encoding.default_internal = Encoding::US_ASCII
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@io = new_io @name, 'r'
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@io.set_encoding Encoding::UTF_8, Encoding::UTF_16
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@io.gets.encoding.should == Encoding::UTF_16
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end
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it "overwrites the default external encoding with the IO object's own external encoding" do
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Encoding.default_external = Encoding::ASCII_8BIT
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Encoding.default_internal = Encoding::UTF_8
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@io = new_io @name, 'r'
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@io.set_encoding Encoding::IBM866
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@io.gets.encoding.should == Encoding::UTF_8
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end
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it "ignores the internal encoding if the default external encoding is ASCII-8BIT" do
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Encoding.default_external = Encoding::ASCII_8BIT
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Encoding.default_internal = Encoding::UTF_8
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@io = new_io @name, 'r'
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@io.gets.encoding.should == Encoding::ASCII_8BIT
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end
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it "transcodes to internal encoding if the IO object's external encoding is ASCII-8BIT" do
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Encoding.default_external = Encoding::ASCII_8BIT
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Encoding.default_internal = Encoding::UTF_8
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@io = new_io @name, 'r'
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@io.set_encoding Encoding::ASCII_8BIT, Encoding::UTF_8
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@io.gets.encoding.should == Encoding::UTF_8
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end
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end
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