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Contents
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
require File.expand_path('../shared/join', __FILE__)
describe "Array#join" do
it_behaves_like :array_join, :join, ArraySpecs::NewArray
end
describe "Array#join" do
it "does not separates elements when the passed separator is nil" do
[1, 2, 3].join(nil).should == '123'
end
it "uses $, as the default separator (which defaults to nil)" do
[1, 2, 3].join.should == '123'
begin
old, $, = $,, '-'
[1, 2, 3].join.should == '1-2-3'
ensure
$, = old
end
end
it "does not process the separator if the array is empty" do
a = []
sep = Object.new
a.join(sep).should == ""
end
it "calls #to_str to convert the separator to a String" do
sep = mock("separator")
sep.should_receive(:to_str).and_return(", ")
[1, 2].send(@method, sep).should == "1, 2"
end
it "calls #to_s on the Array elements" do
a = mock("Array#join element")
a.should_receive(:to_s).and_return("-a-")
a.should_not_receive(:to_a)
[a].join(",").should == "-a-"
end
it "raises a TypeError if the separator cannot be coerced to a String by calling #to_str" do
obj = mock("not a string")
lambda { [1, 2].send(@method, obj) }.should raise_error(TypeError)
end
ruby_version_is "1.9" do
it "sets the result String's encoding to the first String's encoding" do
ary1 = ['foo'.force_encoding('utf-8'), 'bar', 'baz']
ary2 = ['foo', 'bar'.force_encoding('utf-8'), 'baz'.force_encoding('utf-8')]
ary1.join.encoding.should == Encoding::UTF_8
#ary2.join.encoding.should == 'foo'.encoding
end
end
end
Version data entries
52 entries across 52 versions & 2 rubygems