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# -*- encoding: utf-8 -*-
require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "StringIO#puts when passed an Array" do
before :each do
@io = StringIO.new
end
it "writes each element of the passed Array to self, separated by a newline" do
@io.puts([1, 2, 3, 4])
@io.string.should == "1\n2\n3\n4\n"
@io.puts([1, 2], [3, 4])
@io.string.should == "1\n2\n3\n4\n1\n2\n3\n4\n"
end
it "flattens nested Arrays" do
@io.puts([1, [2, [3, [4]]]])
@io.string.should == "1\n2\n3\n4\n"
end
it "handles self-recursive arrays correctly" do
(ary = [5])
ary << ary
@io.puts(ary)
@io.string.should == "5\n[...]\n"
end
it "does not honor the global output record separator $\\" do
begin
old_rs = $\
suppress_warning {$\ = "test"}
@io.puts([1, 2, 3, 4])
@io.string.should == "1\n2\n3\n4\n"
ensure
suppress_warning {$\ = old_rs}
end
end
it "first tries to convert each Array element to an Array using #to_ary" do
obj = mock("Object")
obj.should_receive(:to_ary).and_return(["to_ary"])
@io.puts([obj])
@io.string.should == "to_ary\n"
end
it "then tries to convert each Array element to a String using #to_s" do
obj = mock("Object")
obj.should_receive(:to_s).and_return("to_s")
@io.puts([obj])
@io.string.should == "to_s\n"
end
it "returns general object info if :to_s does not return a string" do
object = mock('hola')
object.should_receive(:to_s).and_return(false)
@io.puts(object).should == nil
@io.string.should == object.inspect.split(" ")[0] + ">\n"
end
end
describe "StringIO#puts when passed 1 or more objects" do
before :each do
@io = StringIO.new
end
it "does not honor the global output record separator $\\" do
begin
old_rs = $\
suppress_warning {$\ = "test"}
@io.puts(1, 2, 3, 4)
@io.string.should == "1\n2\n3\n4\n"
ensure
suppress_warning {$\ = old_rs}
end
end
it "does not put a \\n after each Objects that end in a newline" do
@io.puts("1\n", "2\n", "3\n")
@io.string.should == "1\n2\n3\n"
end
it "first tries to convert each Object to an Array using #to_ary" do
obj = mock("Object")
obj.should_receive(:to_ary).and_return(["to_ary"])
@io.puts(obj)
@io.string.should == "to_ary\n"
end
it "then tries to convert each Object to a String using #to_s" do
obj = mock("Object")
obj.should_receive(:to_s).and_return("to_s")
@io.puts(obj)
@io.string.should == "to_s\n"
end
it "prints a newline when passed an empty string" do
@io.puts ''
@io.string.should == "\n"
end
end
describe "StringIO#puts when passed no arguments" do
before :each do
@io = StringIO.new
end
it "returns nil" do
@io.puts.should be_nil
end
it "prints a newline" do
@io.puts
@io.string.should == "\n"
end
it "does not honor the global output record separator $\\" do
begin
old_rs = $\
suppress_warning {$\ = "test"}
@io.puts
@io.string.should == "\n"
ensure
suppress_warning {$\ = old_rs}
end
end
end
describe "StringIO#puts when in append mode" do
before :each do
@io = StringIO.new("example", "a")
end
it "appends the passed argument to the end of self" do
@io.puts(", just testing")
@io.string.should == "example, just testing\n"
@io.puts(" and more testing")
@io.string.should == "example, just testing\n and more testing\n"
end
it "correctly updates self's position" do
@io.puts(", testing")
@io.pos.should eql(17)
end
end
describe "StringIO#puts when self is not writable" do
it "raises an IOError" do
io = StringIO.new("test", "r")
-> { io.puts }.should raise_error(IOError)
io = StringIO.new("test")
io.close_write
-> { io.puts }.should raise_error(IOError)
end
end
describe "StringIO#puts when passed an encoded string" do
it "stores the bytes unmodified" do
io = StringIO.new("")
io.puts "\x00\x01\x02"
io.puts "æåø"
io.string.should == "\x00\x01\x02\næåø\n"
end
end
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