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Diffstat (limited to 'spec/rubyspec/core/io/write_spec.rb')
-rw-r--r-- | spec/rubyspec/core/io/write_spec.rb | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/spec/rubyspec/core/io/write_spec.rb b/spec/rubyspec/core/io/write_spec.rb new file mode 100644 index 0000000000..1011efe8d5 --- /dev/null +++ b/spec/rubyspec/core/io/write_spec.rb @@ -0,0 +1,157 @@ +# -*- encoding: utf-8 -*- +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) +require File.expand_path('../shared/write', __FILE__) +require File.expand_path('../shared/binwrite', __FILE__) + +describe "IO#write on a file" do + before :each do + @filename = tmp("IO_syswrite_file") + $$.to_s + File.open(@filename, "w") do |file| + file.write("012345678901234567890123456789") + end + @file = File.open(@filename, "r+") + @readonly_file = File.open(@filename) + end + + after :each do + @file.close + @readonly_file.close + rm_r @filename + end + + it "does not check if the file is writable if writing zero bytes" do + lambda { @readonly_file.write("") }.should_not raise_error + end + + it "returns a length of 0 when writing a blank string" do + @file.write('').should == 0 + end + + with_feature :encoding do + before :each do + @external = Encoding.default_external + @internal = Encoding.default_internal + + Encoding.default_external = Encoding::UTF_8 + end + + after :each do + Encoding.default_external = @external + Encoding.default_internal = @internal + end + + it "returns the number of bytes written" do + @file.write("hellø").should == 6 + end + + it "uses the encoding from the given option for non-ascii encoding" do + File.open(@filename, "w", encoding: Encoding::UTF_32LE) do |file| + file.write("hi").should == 8 + end + File.binread(@filename).should == "h\u0000\u0000\u0000i\u0000\u0000\u0000" + end + + it "uses an :open_args option" do + IO.write(@filename, 'hi', open_args: ["w", nil, {encoding: Encoding::UTF_32LE}]).should == 8 + end + + it "raises a invalid byte sequence error if invalid bytes are being written" do + # pack "\xFEhi" to avoid utf-8 conflict + xFEhi = ([254].pack('C*') + 'hi').force_encoding('utf-8') + File.open(@filename, "w", encoding: Encoding::US_ASCII) do |file| + lambda { file.write(xFEhi) }.should raise_error(Encoding::InvalidByteSequenceError) + end + end + + it "writes binary data if no encoding is given" do + File.open(@filename, "w") do |file| + file.write('Hëllö'.encode('ISO-8859-1')) + end + ë = ([235].pack('U')).encode('ISO-8859-1') + ö = ([246].pack('U')).encode('ISO-8859-1') + res = "H#{ë}ll#{ö}" + File.binread(@filename).should == res.force_encoding(Encoding::ASCII_8BIT) + end + end +end + +describe "IO.write" do + it_behaves_like :io_binwrite, :write + + it "uses an :open_args option" do + IO.write(@filename, 'hi', open_args: ["w", nil, {encoding: Encoding::UTF_32LE}]).should == 8 + end + + it "disregards other options if :open_args is given" do + IO.write(@filename, 'hi', 2, mode: "r", encoding: Encoding::UTF_32LE, open_args: ["w"]).should == 2 + File.read(@filename).should == "\0\0hi" + end + + it "uses the given encoding and returns the number of bytes written" do + IO.write(@filename, 'hi', mode: "w", encoding: Encoding::UTF_32LE).should == 8 + end + + it "writes binary data if no encoding is given" do + IO.write(@filename, 'Hëllö'.encode('ISO-8859-1')) + xEB = [235].pack('C*') + xF6 = [246].pack('C*') + File.binread(@filename).should == ("H" + xEB + "ll" + xF6).force_encoding(Encoding::ASCII_8BIT) + end + + platform_is_not :windows do + describe "on a FIFO" do + before :each do + @fifo = tmp("File_open_fifo") + system "mkfifo #{@fifo}" + end + + after :each do + rm_r @fifo + end + + it "writes correctly" do + thr = Thread.new do + IO.read(@fifo) + end + begin + string = "hi" + IO.write(@fifo, string).should == string.length + ensure + thr.join + end + end + end + end +end + +describe "IO#write" do + it_behaves_like :io_write, :write +end + +platform_is :windows do + describe "IO#write on Windows" do + before :each do + @fname = tmp("io_write.txt") + end + + after :each do + rm_r @fname + @io.close if @io and !@io.closed? + end + + it "normalizes line endings in text mode" do + @io = new_io(@fname, "wt") + @io.write "a\nb\nc" + @io.close + File.binread(@fname).should == "a\r\nb\r\nc" + end + + it "does not normalize line endings in binary mode" do + @io = new_io(@fname, "wb") + @io.write "a\r\nb\r\nc" + @io.close + File.binread(@fname).should == "a\r\nb\r\nc" + end + end +end |