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107 lines
2.3 KiB
Ruby
107 lines
2.3 KiB
Ruby
require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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describe "IO#eof?" do
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before :each do
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@name = tmp("empty.txt")
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touch @name
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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 "returns true on an empty stream that has just been opened" do
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File.open(@name) { |empty| empty.should.eof? }
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end
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it "raises IOError on stream not opened for reading" do
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-> do
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File.open(@name, "w") { |f| f.eof? }
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end.should raise_error(IOError)
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end
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end
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describe "IO#eof?" do
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before :each do
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@name = fixture __FILE__, "lines.txt"
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@io = IOSpecs.io_fixture "lines.txt"
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end
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after :each do
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@io.close if @io && !@io.closed?
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end
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it "returns false when not at end of file" do
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@io.read 1
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@io.should_not.eof?
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end
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it "returns true after reading with read with no parameters" do
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@io.read()
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@io.should.eof?
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end
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it "returns true after reading with read" do
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@io.read(File.size(@name))
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@io.should.eof?
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end
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it "returns true after reading with sysread" do
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@io.sysread(File.size(@name))
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@io.should.eof?
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end
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it "returns true after reading with readlines" do
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@io.readlines
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@io.should.eof?
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end
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it "returns false on just opened non-empty stream" do
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@io.should_not.eof?
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end
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it "does not consume the data from the stream" do
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@io.should_not.eof?
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@io.getc.should == 'V'
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end
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it "raises IOError on closed stream" do
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-> { IOSpecs.closed_io.eof? }.should raise_error(IOError)
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end
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it "raises IOError on stream closed for reading by close_read" do
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@io.close_read
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-> { @io.eof? }.should raise_error(IOError)
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end
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it "returns true on one-byte stream after single-byte read" do
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File.open(File.dirname(__FILE__) + '/fixtures/one_byte.txt') { |one_byte|
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one_byte.read(1)
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one_byte.should.eof?
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}
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end
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end
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describe "IO#eof?" do
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after :each do
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@r.close if @r && !@r.closed?
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@w.close if @w && !@w.closed?
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end
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it "returns true on receiving side of Pipe when writing side is closed" do
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@r, @w = IO.pipe
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@w.close
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@r.should.eof?
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end
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it "returns false on receiving side of Pipe when writing side wrote some data" do
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@r, @w = IO.pipe
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@w.puts "hello"
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@r.should_not.eof?
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@w.close
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@r.should_not.eof?
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@r.read
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@r.should.eof?
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end
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end
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