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describe :stringio_read, :shared => true do
before(:each) do
@io = StringIO.new("example")
end
it "returns the passed buffer String" do
ret = @io.send(@method, 7, buffer = "")
ret.should equal(buffer)
end
it "returns the remaining data when limit is nil" do
@io.send(@method, nil, buffer = "").should == "example"
buffer.should == "example"
end
ruby_version_is "1.9" do
it "truncates buffer when limit is nil and no data reamins" do
@io.send(@method)
@io.send(@method, nil, buffer = "abc").should == ""
buffer.should == ""
end
end
it "reads length bytes and writes them to the buffer String" do
@io.send(@method, 7, buffer = "")
buffer.should == "example"
end
it "calls #to_str to convert the object to a String" do
obj = mock("to_str")
obj.should_receive(:to_str).and_return(buffer = "")
@io.send(@method, 7, obj)
buffer.should == "example"
end
it "raises a TypeError if the object does not respond to #to_str" do
lambda { @io.send(@method, 7, Object.new) }.should raise_error(TypeError)
end
ruby_version_is ""..."1.9" do
it "raises a TypeError when passed a frozen String as buffer" do
lambda { @io.send(@method, 7, "".freeze) }.should raise_error(TypeError)
end
end
ruby_version_is "1.9" do
it "raises a RuntimeError when passed a frozen String as buffer" do
lambda { @io.send(@method, 7, "".freeze) }.should raise_error(RuntimeError)
end
end
with_feature :encoding do
it "returns a String in ASCII-8BIT ignoring the encoding of the source String and buffer" do
io = StringIO.new("abc".force_encoding(Encoding::EUC_JP))
buffer = "".force_encoding(Encoding::ISO_8859_1)
io.send(@method, 3, buffer).encoding.should == Encoding::ASCII_8BIT
end
end
end
describe :stringio_read_length, :shared => true do
before(:each) do
@io = StringIO.new("example")
end
it "reads length bytes from the current position and returns them" do
@io.pos = 3
@io.send(@method, 4).should == "mple"
end
it "reads at most the whole content" do
@io.send(@method, 999).should == "example"
end
it "updates the position" do
@io.send(@method, 3)
@io.pos.should eql(3)
@io.send(@method, 999)
@io.pos.should eql(7)
end
it "calls #to_int to convert the length" do
obj = mock("to_int")
obj.should_receive(:to_int).and_return(7)
@io.send(@method, obj).should == "example"
end
it "raises a TypeError when the length does not respond to #to_int" do
lambda { @io.send(@method, Object.new) }.should raise_error(TypeError)
end
it "raises a TypeError when length is negative" do
lambda { @io.send(@method, -2) }.should raise_error(ArgumentError)
end
with_feature :encoding do
it "returns a String in ASCII-8BIT encoding when passed a length > 0" do
@io.send(@method, 4).encoding.should == Encoding::ASCII_8BIT
end
it "returns an empty String in ASCII-8BIT encoding when passed length == 0" do
@io.send(@method, 0).encoding.should == Encoding::ASCII_8BIT
end
end
end
describe :stringio_read_no_arguments, :shared => true do
before(:each) do
@io = StringIO.new("example")
end
it "reads the whole content starting from the current position" do
@io.send(@method).should == "example"
@io.pos = 3
@io.send(@method).should == "mple"
end
it "updates the current position" do
@io.send(@method)
@io.pos.should eql(7)
end
ruby_bug "readmine#156", "1.8.7" do
it "returns an empty String when no data remains" do
@io.send(@method).should == "example"
@io.send(@method).should == ""
end
end
with_feature :encoding do
it "returns a String in the same encoding as the source String" do
io = StringIO.new("abc".force_encoding(Encoding::EUC_JP))
io.send(@method).encoding.should == Encoding::EUC_JP
end
it "returns an empty String in ASCII-8BIT encoding" do
@io.send(@method).should == "example"
@io.send(@method).encoding.should == Encoding::ASCII_8BIT
end
end
end
describe :stringio_read_nil, :shared => true do
before :each do
@io = StringIO.new("example")
end
it "returns the remaining content from the current position" do
@io.send(@method, nil).should == "example"
@io.pos = 4
@io.send(@method, nil).should == "ple"
end
it "updates the current position" do
@io.send(@method, nil)
@io.pos.should eql(7)
end
ruby_bug "redmine#156", "1.8.7" do
it "returns an empty String when no data remains" do
@io.send(@method, nil).should == "example"
@io.send(@method, nil).should == ""
end
end
with_feature :encoding do
it "returns an empty String in ASCII-8BIT encoding" do
@io.send(@method).should == "example"
@io.send(@method).encoding.should == Encoding::ASCII_8BIT
end
end
end
describe :stringio_read_not_readable, :shared => true do
it "raises an IOError" do
io = StringIO.new("test", "w")
lambda { io.send(@method) }.should raise_error(IOError)
io = StringIO.new("test")
io.close_read
lambda { io.send(@method) }.should raise_error(IOError)
end
end
|
