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require_relative '../../spec_helper'
describe "chilled String" do
guard -> { ruby_version_is "3.4" and !"test".equal?("test") } do
describe "chilled string literals" do
describe "#frozen?" do
it "returns false" do
"chilled".frozen?.should == false
end
end
describe "#-@" do
it "returns a different instance" do
input = "chilled"
interned = (-input)
interned.frozen?.should == true
interned.object_id.should_not == input.object_id
end
end
describe "#+@" do
it "returns a different instance" do
input = "chilled"
duped = (+input)
duped.frozen?.should == false
duped.object_id.should_not == input.object_id
end
end
describe "#clone" do
it "preserves chilled status" do
input = "chilled".clone
-> {
input << "-mutated"
}.should complain(/literal string will be frozen in the future/)
input.should == "chilled-mutated"
end
end
describe "mutation" do
it "emits a warning" do
input = "chilled"
-> {
input << "-mutated"
}.should complain(/literal string will be frozen in the future/)
input.should == "chilled-mutated"
end
it "emits a warning for concatenated strings" do
input = "still" "+chilled"
-> {
input << "-mutated"
}.should complain(/literal string will be frozen in the future/)
input.should == "still+chilled-mutated"
end
it "emits a warning on singleton_class creation" do
-> {
"chilled".singleton_class
}.should complain(/literal string will be frozen in the future/)
end
it "emits a warning on instance variable assignment" do
-> {
"chilled".instance_variable_set(:@ivar, 42)
}.should complain(/literal string will be frozen in the future/)
end
it "raises FrozenError after the string was explicitly frozen" do
input = "chilled"
input.freeze
-> {
-> {
input << "mutated"
}.should raise_error(FrozenError)
}.should_not complain(/literal string will be frozen in the future/)
end
end
end
describe "chilled strings returned by Symbol#to_s" do
describe "#frozen?" do
it "returns false" do
:chilled.to_s.frozen?.should == false
end
end
describe "#-@" do
it "returns a different instance" do
input = :chilled.to_s
interned = (-input)
interned.frozen?.should == true
interned.object_id.should_not == input.object_id
end
end
describe "#+@" do
it "returns a different instance" do
input = :chilled.to_s
duped = (+input)
duped.frozen?.should == false
duped.object_id.should_not == input.object_id
end
end
describe "#clone" do
it "preserves chilled status" do
input = :chilled.to_s.clone
-> {
input << "-mutated"
}.should complain(/string returned by :chilled\.to_s will be frozen in the future/)
input.should == "chilled-mutated"
end
end
describe "mutation" do
it "emits a warning" do
input = :chilled.to_s
-> {
input << "-mutated"
}.should complain(/string returned by :chilled\.to_s will be frozen in the future/)
input.should == "chilled-mutated"
end
it "emits a warning on singleton_class creation" do
-> {
:chilled.to_s.singleton_class
}.should complain(/string returned by :chilled\.to_s will be frozen in the future/)
end
it "emits a warning on instance variable assignment" do
-> {
:chilled.to_s.instance_variable_set(:@ivar, 42)
}.should complain(/string returned by :chilled\.to_s will be frozen in the future/)
end
it "raises FrozenError after the string was explicitly frozen" do
input = :chilled.to_s
input.freeze
-> {
-> {
input << "mutated"
}.should raise_error(FrozenError)
}.should_not complain(/string returned by :chilled\.to_s will be frozen in the future/)
end
end
end
end
end
|
