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* 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
61 lines
1.5 KiB
Ruby
61 lines
1.5 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#printf" do
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before :each do
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@io = StringIO.new('example')
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end
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it "returns nil" do
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@io.printf("%d %04x", 123, 123).should be_nil
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end
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it "pads self with \\000 when the current position is after the end" do
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@io.pos = 10
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@io.printf("%d", 123)
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@io.string.should == "example\000\000\000123"
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end
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it "performs format conversion" do
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@io.printf("%d %04x", 123, 123)
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@io.string.should == "123 007b"
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end
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it "updates the current position" do
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@io.printf("%d %04x", 123, 123)
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@io.pos.should eql(8)
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@io.printf("%d %04x", 123, 123)
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@io.pos.should eql(16)
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end
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end
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describe "StringIO#printf when in append mode" do
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before :each do
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@io = StringIO.new("example", "a")
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end
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it "appends the passed argument to the end of self" do
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@io.printf("%d %04x", 123, 123)
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@io.string.should == "example123 007b"
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@io.printf("%d %04x", 123, 123)
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@io.string.should == "example123 007b123 007b"
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end
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it "correctly updates self's position" do
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@io.printf("%d %04x", 123, 123)
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@io.pos.should eql(15)
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end
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end
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describe "StringIO#printf when self is not writable" do
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it "raises an IOError" do
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io = StringIO.new("test", "r")
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lambda { io.printf("test") }.should raise_error(IOError)
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io = StringIO.new("test")
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io.close_write
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lambda { io.printf("test") }.should raise_error(IOError)
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end
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end
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