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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "IO#puts" do
before :each do
@before_separator = $/
@name = tmp("io_puts.txt")
@io = new_io @name
ScratchPad.record(+"")
def @io.write(str)
ScratchPad << str
end
end
after :each do
ScratchPad.clear
@io.close if @io
rm_r @name
suppress_warning {$/ = @before_separator}
end
it "writes just a newline when given no args" do
@io.puts.should == nil
ScratchPad.recorded.should == "\n"
end
it "writes just a newline when given just a newline" do
-> { $stdout.puts "\n" }.should output_to_fd("\n", $stdout)
end
it "writes empty string with a newline when given nil as an arg" do
@io.puts(nil).should == nil
ScratchPad.recorded.should == "\n"
end
it "writes empty string with a newline when given nil as multiple args" do
@io.puts(nil, nil).should == nil
ScratchPad.recorded.should == "\n\n"
end
it "calls :to_ary before writing non-string objects, regardless of it being implemented in the receiver" do
object = mock('hola')
object.should_receive(:method_missing).with(:to_ary)
object.should_receive(:to_s).and_return("#<Object:0x...>")
@io.puts(object).should == nil
ScratchPad.recorded.should == "#<Object:0x...>\n"
end
it "calls :to_ary before writing non-string objects" do
object = mock('hola')
object.should_receive(:to_ary).and_return(["hola"])
@io.puts(object).should == nil
ScratchPad.recorded.should == "hola\n"
end
it "calls :to_s before writing non-string objects that don't respond to :to_ary" do
object = mock('hola')
object.should_receive(:to_s).and_return("hola")
@io.puts(object).should == nil
ScratchPad.recorded.should == "hola\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
ScratchPad.recorded.should == object.inspect.split(" ")[0] + ">\n"
end
it "writes each arg if given several" do
@io.puts(1, "two", 3).should == nil
ScratchPad.recorded.should == "1\ntwo\n3\n"
end
it "flattens a nested array before writing it" do
@io.puts([1, 2, [3]]).should == nil
ScratchPad.recorded.should == "1\n2\n3\n"
end
it "writes nothing for an empty array" do
x = []
@io.should_not_receive(:write)
@io.puts(x).should == nil
end
it "writes [...] for a recursive array arg" do
x = []
x << 2 << x
@io.puts(x).should == nil
ScratchPad.recorded.should == "2\n[...]\n"
end
it "writes a newline after objects that do not end in newlines" do
@io.puts(5).should == nil
ScratchPad.recorded.should == "5\n"
end
it "does not write a newline after objects that end in newlines" do
@io.puts("5\n").should == nil
ScratchPad.recorded.should == "5\n"
end
it "ignores the $/ separator global" do
suppress_warning {$/ = ":"}
@io.puts(5).should == nil
ScratchPad.recorded.should == "5\n"
end
it "raises IOError on closed stream" do
-> { IOSpecs.closed_io.puts("stuff") }.should raise_error(IOError)
end
it "writes crlf when IO is opened with newline: :crlf" do
File.open(@name, 'wt', newline: :crlf) do |file|
file.puts
end
File.binread(@name).should == "\r\n"
end
it "writes cr when IO is opened with newline: :cr" do
File.open(@name, 'wt', newline: :cr) do |file|
file.puts
end
File.binread(@name).should == "\r"
end
platform_is_not :windows do # https://bugs.ruby-lang.org/issues/12436
it "writes lf when IO is opened with newline: :lf" do
File.open(@name, 'wt', newline: :lf) do |file|
file.puts
end
File.binread(@name).should == "\n"
end
end
end
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