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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
# FIXME: These methods exist on 1.9 only when the -n or -p option is passed to
# ruby, but we currently don't have a way of specifying that.
ruby_version_is ""..."1.9" do
describe "Kernel#gsub" do
it "is a private method" do
Kernel.should have_private_instance_method(:gsub)
end
it "raises a TypeError if $_ is not a String" do
lambda {
$_ = 123
gsub /./, "!"
}.should raise_error(TypeError)
end
it "when matches sets $_ to a new string, leaving the former value unaltered" do
orig_value = $_ = "hello"
gsub "ello", "ola"
$_.should_not equal(orig_value)
$_.should == "hola"
orig_value.should == "hello"
end
it "returns a string with the same contents as $_ after the operation" do
$_ = "bye"
gsub("non-match", "?").should == "bye"
orig_value = $_ = "bye"
gsub(/$/, "!").should == "bye!"
end
it "accepts Regexps as patterns" do
$_ = "food"
gsub /.$/, "l"
$_.should == "fool"
end
it "accepts Strings as patterns, treated literally" do
$_ = "hello, world."
gsub ".", "!"
$_.should == "hello, world!"
end
it "accepts objects which respond to #to_str as patterns and treats them as strings" do
$_ = "hello, world."
stringlike = mock(".")
stringlike.should_receive(:to_str).and_return(".")
gsub stringlike, "!"
$_.should == "hello, world!"
end
end
describe "Kernel#gsub with a pattern and replacement" do
it "accepts strings for replacement" do
$_ = "hello"
gsub /./, "."
$_.should == "....."
end
it "accepts objects which respond to #to_str for replacement" do
o = mock("o")
o.should_receive(:to_str).and_return("o")
$_ = "ping"
gsub "i", o
$_.should == "pong"
end
it "replaces \\1 sequences with the regexp's corresponding capture" do
$_ = "hello!"
gsub /(.)(.)/, '\2\1'
$_.should == "ehll!o"
end
end
describe "Kernel#gsub with pattern and block" do
it "acts similarly to using $_.gsub" do
$_ = "olleh dlrow"
gsub(/(\w+)/){ $1.reverse }
$_.should == "hello world"
end
end
describe "Kernel#gsub!" do
it "is a private method" do
Kernel.should have_private_instance_method(:gsub!)
end
end
describe "Kernel.gsub!" do
it "needs to be reviewed for spec completeness"
end
end
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