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1d15d5f080
* Other ruby implementations use the spec/ruby directory. [Misc #13792] [ruby-core:82287] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
96 lines
2.4 KiB
Ruby
96 lines
2.4 KiB
Ruby
# -*- encoding: ascii-8bit -*-
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require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../fixtures/classes', __FILE__)
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describe "IO#readpartial" do
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before :each do
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@rd, @wr = IO.pipe
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@rd.binmode
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@wr.binmode
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end
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after :each do
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@rd.close unless @rd.closed?
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@wr.close unless @wr.closed?
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end
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it "raises IOError on closed stream" do
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lambda { IOSpecs.closed_io.readpartial(10) }.should raise_error(IOError)
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@rd.close
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lambda { @rd.readpartial(10) }.should raise_error(IOError)
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end
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it "reads at most the specified number of bytes" do
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@wr.write("foobar")
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# buffered read
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@rd.read(1).should == 'f'
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# return only specified number, not the whole buffer
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@rd.readpartial(1).should == "o"
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end
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it "reads after ungetc with data in the buffer" do
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@wr.write("foobar")
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c = @rd.getc
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@rd.ungetc(c)
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@rd.readpartial(3).should == "foo"
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@rd.readpartial(3).should == "bar"
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end
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it "reads after ungetc with multibyte characters in the buffer" do
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@wr.write("∂φ/∂x = gaîté")
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c = @rd.getc
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@rd.ungetc(c)
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@rd.readpartial(3).should == "\xE2\x88\x82"
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@rd.readpartial(3).should == "\xCF\x86/"
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end
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it "reads after ungetc without data in the buffer" do
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@wr.write("f")
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c = @rd.getc
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@rd.ungetc(c)
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@rd.readpartial(2).should == "f"
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# now, also check that the ungot char is cleared and
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# not returned again
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@wr.write("b")
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@rd.readpartial(2).should == "b"
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end
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it "discards the existing buffer content upon successful read" do
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buffer = "existing"
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@wr.write("hello world")
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@wr.close
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@rd.readpartial(11, buffer)
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buffer.should == "hello world"
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end
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it "raises EOFError on EOF" do
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@wr.write("abc")
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@wr.close
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@rd.readpartial(10).should == 'abc'
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lambda { @rd.readpartial(10) }.should raise_error(EOFError)
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end
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it "discards the existing buffer content upon error" do
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buffer = 'hello'
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@wr.close
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lambda { @rd.readpartial(1, buffer) }.should raise_error(EOFError)
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buffer.should be_empty
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end
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it "raises IOError if the stream is closed" do
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@wr.close
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lambda { @rd.readpartial(1) }.should raise_error(IOError)
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end
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it "raises ArgumentError if the negative argument is provided" do
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lambda { @rd.readpartial(-1) }.should raise_error(ArgumentError)
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end
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it "immediately returns an empty string if the length argument is 0" do
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@rd.readpartial(0).should == ""
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end
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end
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