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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
67 lines
1.9 KiB
Ruby
67 lines
1.9 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../fixtures/classes', __FILE__)
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describe "StringIO#seek" do
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before :each do
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@io = StringIO.new("12345678")
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end
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it "seeks from the current position when whence is IO::SEEK_CUR" do
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@io.pos = 1
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@io.seek(1, IO::SEEK_CUR)
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@io.pos.should eql(2)
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@io.seek(-1, IO::SEEK_CUR)
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@io.pos.should eql(1)
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end
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it "seeks from the end of self when whence is IO::SEEK_END" do
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@io.seek(3, IO::SEEK_END)
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@io.pos.should eql(11) # Outside of the StringIO's content
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@io.seek(-2, IO::SEEK_END)
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@io.pos.should eql(6)
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end
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it "seeks to an absolute position when whence is IO::SEEK_SET" do
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@io.seek(5, IO::SEEK_SET)
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@io.pos.should == 5
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@io.pos = 3
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@io.seek(5, IO::SEEK_SET)
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@io.pos.should == 5
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end
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it "raises an Errno::EINVAL error on negative amounts when whence is IO::SEEK_SET" do
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lambda { @io.seek(-5, IO::SEEK_SET) }.should raise_error(Errno::EINVAL)
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end
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it "raises an Errno::EINVAL error on incorrect whence argument" do
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lambda { @io.seek(0, 3) }.should raise_error(Errno::EINVAL)
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lambda { @io.seek(0, -1) }.should raise_error(Errno::EINVAL)
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lambda { @io.seek(0, 2**16) }.should raise_error(Errno::EINVAL)
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lambda { @io.seek(0, -2**16) }.should raise_error(Errno::EINVAL)
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end
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it "tries to convert the passed Object to a String using #to_int" do
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obj = mock("to_int")
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obj.should_receive(:to_int).and_return(2)
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@io.seek(obj)
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@io.pos.should eql(2)
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end
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it "raises a TypeError when the passed Object can't be converted to an Integer" do
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lambda { @io.seek(Object.new) }.should raise_error(TypeError)
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end
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end
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describe "StringIO#seek when self is closed" do
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before :each do
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@io = StringIO.new("example")
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@io.close
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end
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it "raises an IOError" do
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lambda { @io.seek(5) }.should raise_error(IOError)
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end
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end
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