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ruby--ruby/spec/ruby/library/stringio/append_spec.rb
eregon 1d15d5f080 Move spec/rubyspec to spec/ruby for consistency
* 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
2017-09-20 20:18:52 +00:00

84 lines
2.1 KiB
Ruby

require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe "StringIO#<< when passed [Object]" do
before :each do
@io = StringIO.new("example")
end
it "returns self" do
(@io << "just testing").should equal(@io)
end
it "writes the passed argument onto self" do
(@io << "just testing")
@io.string.should == "just testing"
(@io << " and more testing")
@io.string.should == "just testing and more testing"
end
it "writes the passed argument at the current position" do
@io.pos = 5
@io << "<test>"
@io.string.should == "examp<test>"
end
it "pads self with \\000 when the current position is after the end" do
@io.pos = 15
@io << "just testing"
@io.string.should == "example\000\000\000\000\000\000\000\000just testing"
end
it "taints self's String when the passed argument is tainted" do
(@io << "test".taint)
@io.string.tainted?.should be_true
end
it "does not taint self when the passed argument is tainted" do
(@io << "test".taint)
@io.tainted?.should be_false
end
it "updates self's position" do
@io << "test"
@io.pos.should eql(4)
end
it "tries to convert the passed argument to a String using #to_s" do
obj = mock("to_s")
obj.should_receive(:to_s).and_return("Test")
(@io << obj).string.should == "Testple"
end
end
describe "StringIO#<< when self is not writable" do
it "raises an IOError" do
io = StringIO.new("test", "r")
lambda { io << "test" }.should raise_error(IOError)
io = StringIO.new("test")
io.close_write
lambda { io << "test" }.should raise_error(IOError)
end
end
describe "StringIO#<< when in append mode" do
before :each do
@io = StringIO.new("example", "a")
end
it "appends the passed argument to the end of self, ignoring current position" do
(@io << ", just testing")
@io.string.should == "example, just testing"
@io.pos = 3
(@io << " and more testing")
@io.string.should == "example, just testing and more testing"
end
it "correctly updates self's position" do
@io << ", testing"
@io.pos.should eql(16)
end
end