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-rw-r--r--spec/rubyspec/core/io/read_spec.rb616
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diff --git a/spec/rubyspec/core/io/read_spec.rb b/spec/rubyspec/core/io/read_spec.rb
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--- a/spec/rubyspec/core/io/read_spec.rb
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@@ -1,616 +0,0 @@
-# -*- encoding: utf-8 -*-
-require File.expand_path('../../../spec_helper', __FILE__)
-require File.expand_path('../fixtures/classes', __FILE__)
-
-describe "IO.read" do
- before :each do
- @fname = tmp("io_read.txt")
- @contents = "1234567890"
- touch(@fname) { |f| f.write @contents }
- end
-
- after :each do
- rm_r @fname
- end
-
- it "reads the contents of a file" do
- IO.read(@fname).should == @contents
- end
-
- it "calls #to_path on non-String arguments" do
- p = mock('path')
- p.should_receive(:to_path).and_return(@fname)
- IO.read(p)
- end
-
- it "accepts an empty options Hash" do
- IO.read(@fname, {}).should == @contents
- end
-
- it "accepts a length, offset, and empty options Hash" do
- IO.read(@fname, 3, 0, {}).should == @contents[0, 3]
- end
-
- it "raises an IOError if the options Hash specifies write mode" do
- lambda { IO.read(@fname, 3, 0, {mode: "w"}) }.should raise_error(IOError)
- end
-
- it "raises an IOError if the options Hash specifies append only mode" do
- lambda { IO.read(@fname, {mode: "a"}) }.should raise_error(IOError)
- end
-
- it "reads the file if the options Hash includes read mode" do
- IO.read(@fname, {mode: "r"}).should == @contents
- end
-
- it "reads the file if the options Hash includes read/write mode" do
- IO.read(@fname, {mode: "r+"}).should == @contents
- end
-
- it "reads the file if the options Hash includes read/write append mode" do
- IO.read(@fname, {mode: "a+"}).should == @contents
- end
-
- it "treats second nil argument as no length limit" do
- IO.read(@fname, nil).should == @contents
- IO.read(@fname, nil, 5).should == IO.read(@fname, @contents.length, 5)
- end
-
- it "treats third nil argument as 0" do
- IO.read(@fname, nil, nil).should == @contents
- IO.read(@fname, 5, nil).should == IO.read(@fname, 5, 0)
- end
-
- it "reads the contents of a file up to a certain size when specified" do
- IO.read(@fname, 5).should == @contents.slice(0..4)
- end
-
- it "reads the contents of a file from an offset of a specific size when specified" do
- IO.read(@fname, 5, 3).should == @contents.slice(3, 5)
- end
-
- it "returns nil at end-of-file when length is passed" do
- IO.read(@fname, 1, 10).should == nil
- end
-
- it "raises an Errno::ENOENT when the requested file does not exist" do
- rm_r @fname
- lambda { IO.read @fname }.should raise_error(Errno::ENOENT)
- end
-
- it "raises a TypeError when not passed a String type" do
- lambda { IO.read nil }.should raise_error(TypeError)
- end
-
- it "raises an ArgumentError when not passed a valid length" do
- lambda { IO.read @fname, -1 }.should raise_error(ArgumentError)
- end
-
- it "raises an Errno::EINVAL when not passed a valid offset" do
- lambda { IO.read @fname, 0, -1 }.should raise_error(Errno::EINVAL)
- lambda { IO.read @fname, -1, -1 }.should raise_error(Errno::EINVAL)
- end
-
- with_feature :encoding do
- it "uses the external encoding specified via the :external_encoding option" do
- str = IO.read(@fname, external_encoding: Encoding::ISO_8859_1)
- str.encoding.should == Encoding::ISO_8859_1
- end
-
- it "uses the external encoding specified via the :encoding option" do
- str = IO.read(@fname, encoding: Encoding::ISO_8859_1)
- str.encoding.should == Encoding::ISO_8859_1
- end
- end
-end
-
-describe "IO.read from a pipe" do
- it "runs the rest as a subprocess and returns the standard output" do
- cmd = "|sh -c 'echo hello'"
- platform_is :windows do
- cmd = "|cmd.exe /C echo hello"
- end
- IO.read(cmd).should == "hello\n"
- end
-
- with_feature :fork do
- it "opens a pipe to a fork if the rest is -" do
- str = IO.read("|-")
- if str # parent
- str.should == "hello from child\n"
- else #child
- puts "hello from child"
- exit!
- end
- end
- end
-
- it "reads only the specified number of bytes requested" do
- cmd = "|sh -c 'echo hello'"
- platform_is :windows do
- cmd = "|cmd.exe /C echo hello"
- end
- IO.read(cmd, 1).should == "h"
- end
-
- platform_is_not :windows do
- it "raises Errno::ESPIPE if passed an offset" do
- lambda {
- IO.read("|sh -c 'echo hello'", 1, 1)
- }.should raise_error(Errno::ESPIPE)
- end
- end
-
-quarantine! do # The process tried to write to a nonexistent pipe.
- platform_is :windows do
- # TODO: It should raise Errno::ESPIPE on Windows as well
- # once https://bugs.ruby-lang.org/issues/12230 is fixed.
- it "raises Errno::EINVAL if passed an offset" do
- lambda {
- IO.read("|cmd.exe /C echo hello", 1, 1)
- }.should raise_error(Errno::EINVAL)
- end
- end
-end
-end
-
-describe "IO.read on an empty file" do
- before :each do
- @fname = tmp("io_read_empty.txt")
- touch(@fname)
- end
-
- after :each do
- rm_r @fname
- end
-
- it "returns nil when length is passed" do
- IO.read(@fname, 1).should == nil
- end
-
- it "returns an empty string when no length is passed" do
- IO.read(@fname).should == ""
- end
-end
-
-describe "IO#read" do
-
- before :each do
- @fname = tmp("io_read.txt")
- @contents = "1234567890"
- touch(@fname) { |f| f.write @contents }
-
- @io = open @fname, "r+"
- end
-
- after :each do
- @io.close
- rm_r @fname
- end
-
- it "can be read from consecutively" do
- @io.read(1).should == '1'
- @io.read(2).should == '23'
- @io.read(3).should == '456'
- @io.read(4).should == '7890'
- end
-
- it "clears the output buffer if there is nothing to read" do
- @io.pos = 10
-
- buf = 'non-empty string'
-
- @io.read(10, buf).should == nil
-
- buf.should == ''
- end
-
- it "consumes zero bytes when reading zero bytes" do
- @io.read(0).should == ''
- @io.pos.should == 0
-
- @io.getc.chr.should == '1'
- end
-
- it "is at end-of-file when everything has been read" do
- @io.read
- @io.eof?.should == true
- end
-
- it "reads the contents of a file" do
- @io.read.should == @contents
- end
-
- it "places the specified number of bytes in the buffer" do
- buf = ""
- @io.read 5, buf
-
- buf.should == "12345"
- end
-
- it "expands the buffer when too small" do
- buf = "ABCDE"
- @io.read nil, buf
-
- buf.should == @contents
- end
-
- it "overwrites the buffer" do
- buf = "ABCDEFGHIJ"
- @io.read nil, buf
-
- buf.should == @contents
- end
-
- it "truncates the buffer when too big" do
- buf = "ABCDEFGHIJKLMNO"
- @io.read nil, buf
- buf.should == @contents
-
- @io.rewind
-
- buf = "ABCDEFGHIJKLMNO"
- @io.read 5, buf
- buf.should == @contents[0..4]
- end
-
- it "returns the given buffer" do
- buf = ""
-
- @io.read(nil, buf).object_id.should == buf.object_id
- end
-
- it "coerces the second argument to string and uses it as a buffer" do
- buf = "ABCDE"
- obj = mock("buff")
- obj.should_receive(:to_str).any_number_of_times.and_return(buf)
-
- @io.read(15, obj).object_id.should_not == obj.object_id
- buf.should == @contents
- end
-
- it "returns an empty string at end-of-file" do
- @io.read
- @io.read.should == ''
- end
-
- it "reads the contents of a file when more bytes are specified" do
- @io.read(@contents.length + 1).should == @contents
- end
-
- it "returns an empty string at end-of-file" do
- @io.read
- @io.read.should == ''
- end
-
- it "returns an empty string when the current pos is bigger than the content size" do
- @io.pos = 1000
- @io.read.should == ''
- end
-
- it "returns nil at end-of-file with a length" do
- @io.read
- @io.read(1).should == nil
- end
-
- it "with length argument returns nil when the current pos is bigger than the content size" do
- @io.pos = 1000
- @io.read(1).should == nil
- end
-
- it "raises IOError on closed stream" do
- lambda { IOSpecs.closed_io.read }.should raise_error(IOError)
- end
-
-
- platform_is_not :windows do
- it "raises IOError when stream is closed by another thread" do
- r, w = IO.pipe
- t = Thread.new do
- begin
- r.read(1)
- rescue => e
- e
- end
- end
-
- Thread.pass until t.stop?
- r.close
- t.join
- t.value.should be_kind_of(IOError)
- w.close
- end
- end
-end
-
-platform_is :windows do
- describe "IO#read on Windows" do
- before :each do
- @fname = tmp("io_read.txt")
- touch(@fname, "wb") { |f| f.write "a\r\nb\r\nc" }
- end
-
- after :each do
- @io.close if @io
- rm_r @fname
- end
-
- it "normalizes line endings in text mode" do
- @io = new_io(@fname, "r")
- @io.read.should == "a\nb\nc"
- end
-
- it "does not normalize line endings in binary mode" do
- @io = new_io(@fname, "rb")
- @io.read.should == "a\r\nb\r\nc"
- end
- end
-end
-
-describe "IO#read" do
- before :each do
- @io = IOSpecs.io_fixture "lines.txt"
- end
-
- after :each do
- @io.close if @io
- end
-
- it "ignores unicode encoding" do
- @io.readline.should == "Voici la ligne une.\n"
- # read "Qui è"
- @io.read(5).should == "Qui " + [195].pack('C*')
- end
-end
-
-describe "IO#read in binary mode" do
- before :each do
- @internal = Encoding.default_internal
- @name = fixture __FILE__, "read_binary.txt"
- end
-
- after :each do
- Encoding.default_internal = @internal
- end
-
- it "does not transcode file contents when Encoding.default_internal is set" do
- Encoding.default_internal = "utf-8"
-
- result = File.open(@name, "rb") { |f| f.read }.chomp
-
- result.encoding.should == Encoding::ASCII_8BIT
- xE2 = [226].pack('C*')
- result.should == ("abc" + xE2 + "def").force_encoding(Encoding::ASCII_8BIT)
- end
-
- it "does not transcode file contents when an internal encoding is specified" do
- result = File.open(@name, "r:binary:utf-8") { |f| f.read }.chomp
- result.encoding.should == Encoding::ASCII_8BIT
- xE2 = [226].pack('C*')
- result.should == ("abc" + xE2 + "def").force_encoding(Encoding::ASCII_8BIT)
- end
-end
-
-describe "IO#read in text mode" do
- before :each do
- @external = Encoding.default_external
- @internal = Encoding.default_internal
- @name = fixture __FILE__, "read_text.txt"
- end
-
- after :each do
- Encoding.default_external = @external
- Encoding.default_internal = @internal
- end
-
- it "reads data according to the internal encoding" do
- Encoding.default_internal = "utf-8"
- Encoding.default_external = "utf-8"
-
- result = File.open(@name, "rt") { |f| f.read }.chomp
-
- result.encoding.should == Encoding::UTF_8
- result.should == "abcâdef"
- end
-end
-
-describe "IO.read with BOM" do
- it "reads a file without a bom" do
- name = fixture __FILE__, "no_bom_UTF-8.txt"
- result = File.read(name, mode: "rb:BOM|utf-8")
- result.force_encoding("ascii-8bit").should == "UTF-8\n"
- end
-
- it "reads a file with a utf-8 bom" do
- name = fixture __FILE__, "bom_UTF-8.txt"
- result = File.read(name, mode: "rb:BOM|utf-16le")
- result.force_encoding("ascii-8bit").should == "UTF-8\n"
- end
-
- it "reads a file with a utf-16le bom" do
- name = fixture __FILE__, "bom_UTF-16LE.txt"
- result = File.read(name, mode: "rb:BOM|utf-8")
- result.force_encoding("ascii-8bit").should == "U\x00T\x00F\x00-\x001\x006\x00L\x00E\x00\n\x00"
- end
-
- it "reads a file with a utf-16be bom" do
- name = fixture __FILE__, "bom_UTF-16BE.txt"
- result = File.read(name, mode: "rb:BOM|utf-8")
- result.force_encoding("ascii-8bit").should == "\x00U\x00T\x00F\x00-\x001\x006\x00B\x00E\x00\n"
- end
-
- it "reads a file with a utf-32le bom" do
- name = fixture __FILE__, "bom_UTF-32LE.txt"
- result = File.read(name, mode: "rb:BOM|utf-8")
- result.force_encoding("ascii-8bit").should == "U\x00\x00\x00T\x00\x00\x00F\x00\x00\x00-\x00\x00\x003\x00\x00\x002\x00\x00\x00L\x00\x00\x00E\x00\x00\x00\n\x00\x00\x00"
- end
-
- it "reads a file with a utf-32be bom" do
- name = fixture __FILE__, "bom_UTF-32BE.txt"
- result = File.read(name, mode: "rb:BOM|utf-8")
- result.force_encoding("ascii-8bit").should == "\x00\x00\x00U\x00\x00\x00T\x00\x00\x00F\x00\x00\x00-\x00\x00\x003\x00\x00\x002\x00\x00\x00B\x00\x00\x00E\x00\x00\x00\n"
- end
-end
-
-with_feature :encoding do
- describe :io_read_internal_encoding, shared: true do
- it "returns a transcoded String" do
- @io.read.should == "ありがとう\n"
- end
-
- it "sets the String encoding to the internal encoding" do
- @io.read.encoding.should equal(Encoding::UTF_8)
- end
-
- describe "when passed nil for limit" do
- it "sets the buffer to a transcoded String" do
- result = @io.read(nil, buf = "")
- buf.should equal(result)
- buf.should == "ありがとう\n"
- end
-
- it "sets the buffer's encoding to the internal encoding" do
- buf = "".force_encoding Encoding::ISO_8859_1
- @io.read(nil, buf)
- buf.encoding.should equal(Encoding::UTF_8)
- end
- end
- end
-
- describe :io_read_size_internal_encoding, shared: true do
- it "reads bytes when passed a size" do
- @io.read(2).should == [164, 162].pack('C*').force_encoding(Encoding::ASCII_8BIT)
- end
-
- it "returns a String in ASCII-8BIT when passed a size" do
- @io.read(4).encoding.should equal(Encoding::ASCII_8BIT)
- end
-
- it "does not change the buffer's encoding when passed a limit" do
- buf = "".force_encoding Encoding::ISO_8859_1
- @io.read(4, buf)
- buf.should == [164, 162, 164, 234].pack('C*').force_encoding(Encoding::ISO_8859_1)
- buf.encoding.should equal(Encoding::ISO_8859_1)
- end
-
- it "trucates the buffer but does not change the buffer's encoding when no data remains" do
- buf = "abc".force_encoding Encoding::ISO_8859_1
- @io.read
-
- @io.read(1, buf).should be_nil
- buf.size.should == 0
- buf.encoding.should equal(Encoding::ISO_8859_1)
- end
- end
-
- describe "IO#read" do
- describe "when IO#external_encoding and IO#internal_encoding are nil" do
- before :each do
- @name = tmp("io_read.txt")
- touch(@name) { |f| f.write "\x00\x01\x02" }
- @io = new_io @name, "r+"
- end
-
- after :each do
- @io.close if @io
- rm_r @name
- end
-
- it "sets the String encoding to Encoding.default_external" do
- @io.read.encoding.should equal(Encoding.default_external)
- end
- end
-
- describe "with internal encoding" do
- after :each do
- @io.close if @io
- end
-
- describe "not specified" do
- before :each do
- @io = IOSpecs.io_fixture "read_euc_jp.txt", "r:euc-jp"
- end
-
- it "does not transcode the String" do
- @io.read.should == ("ありがとう\n").encode(Encoding::EUC_JP)
- end
-
- it "sets the String encoding to the external encoding" do
- @io.read.encoding.should equal(Encoding::EUC_JP)
- end
-
- it_behaves_like :io_read_size_internal_encoding, nil
- end
-
- describe "specified by open mode" do
- before :each do
- @io = IOSpecs.io_fixture "read_euc_jp.txt", "r:euc-jp:utf-8"
- end
-
- it_behaves_like :io_read_internal_encoding, nil
- it_behaves_like :io_read_size_internal_encoding, nil
- end
-
- describe "specified by mode: option" do
- before :each do
- @io = IOSpecs.io_fixture "read_euc_jp.txt", mode: "r:euc-jp:utf-8"
- end
-
- it_behaves_like :io_read_internal_encoding, nil
- it_behaves_like :io_read_size_internal_encoding, nil
- end
-
- describe "specified by internal_encoding: option" do
- before :each do
- options = { mode: "r",
- internal_encoding: "utf-8",
- external_encoding: "euc-jp" }
- @io = IOSpecs.io_fixture "read_euc_jp.txt", options
- end
-
- it_behaves_like :io_read_internal_encoding, nil
- it_behaves_like :io_read_size_internal_encoding, nil
- end
-
- describe "specified by encoding: option" do
- before :each do
- options = { mode: "r", encoding: "euc-jp:utf-8" }
- @io = IOSpecs.io_fixture "read_euc_jp.txt", options
- end
-
- it_behaves_like :io_read_internal_encoding, nil
- it_behaves_like :io_read_size_internal_encoding, nil
- end
- end
- end
-end
-
-describe "IO#read with large data" do
- before :each do
- # TODO: what is the significance of this mystery math?
- @data_size = 8096 * 2 + 1024
- @data = "*" * @data_size
-
- @fname = tmp("io_read.txt")
- touch(@fname) { |f| f.write @data }
- end
-
- after :each do
- rm_r @fname
- end
-
- it "reads all the data at once" do
- File.open(@fname, 'r') { |io| ScratchPad.record io.read }
-
- ScratchPad.recorded.size.should == @data_size
- ScratchPad.recorded.should == @data
- end
-
- it "reads only the requested number of bytes" do
- read_size = @data_size / 2
- File.open(@fname, 'r') { |io| ScratchPad.record io.read(read_size) }
-
- ScratchPad.recorded.size.should == read_size
- ScratchPad.recorded.should == @data[0, read_size]
- end
-end
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