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# -*- encoding: utf-8 -*-
require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "String#chomp" do
describe "when passed no argument" do
before do
# Ensure that $/ is set to the default value
@verbose, $VERBOSE = $VERBOSE, nil
@dollar_slash, $/ = $/, "\n"
end
after do
$/ = @dollar_slash
$VERBOSE = @verbose
end
it "does not modify a String with no trailing carriage return or newline" do
"abc".chomp.should == "abc"
end
it "returns a copy of the String when it is not modified" do
str = "abc"
str.chomp.should_not equal(str)
end
it "removes one trailing newline" do
"abc\n\n".chomp.should == "abc\n"
end
it "removes one trailing carriage return" do
"abc\r\r".chomp.should == "abc\r"
end
it "removes one trailing carriage return, newline pair" do
"abc\r\n\r\n".chomp.should == "abc\r\n"
end
it "returns an empty String when self is empty" do
"".chomp.should == ""
end
ruby_version_is ''...'2.7' do
it "taints the result if self is tainted" do
"abc".taint.chomp.tainted?.should be_true
end
end
ruby_version_is ''...'3.0' do
it "returns subclass instances when called on a subclass" do
str = StringSpecs::MyString.new("hello\n").chomp
str.should be_an_instance_of(StringSpecs::MyString)
end
end
ruby_version_is '3.0' do
it "returns String instances when called on a subclass" do
str = StringSpecs::MyString.new("hello\n").chomp
str.should be_an_instance_of(String)
end
end
it "removes trailing characters that match $/ when it has been assigned a value" do
$/ = "cdef"
"abcdef".chomp.should == "ab"
end
it "removes one trailing newline for string with invalid encoding" do
"\xa0\xa1\n".chomp.should == "\xa0\xa1"
end
end
describe "when passed nil" do
it "does not modify the String" do
"abc\r\n".chomp(nil).should == "abc\r\n"
end
it "returns a copy of the String" do
str = "abc"
str.chomp(nil).should_not equal(str)
end
ruby_version_is ''...'2.7' do
it "taints the result if self is tainted" do
"abc".taint.chomp(nil).tainted?.should be_true
end
end
it "returns an empty String when self is empty" do
"".chomp(nil).should == ""
end
end
describe "when passed ''" do
it "removes a final newline" do
"abc\n".chomp("").should == "abc"
end
it "removes a final carriage return, newline" do
"abc\r\n".chomp("").should == "abc"
end
it "does not remove a final carriage return" do
"abc\r".chomp("").should == "abc\r"
end
it "removes more than one trailing newlines" do
"abc\n\n\n".chomp("").should == "abc"
end
it "removes more than one trailing carriage return, newline pairs" do
"abc\r\n\r\n\r\n".chomp("").should == "abc"
end
ruby_version_is ''...'2.7' do
it "taints the result if self is tainted" do
"abc".taint.chomp("").tainted?.should be_true
end
end
it "returns an empty String when self is empty" do
"".chomp("").should == ""
end
it "removes one trailing newline for string with invalid encoding" do
"\xa0\xa1\n".chomp("").should == "\xa0\xa1"
end
end
describe "when passed '\\n'" do
it "removes one trailing newline" do
"abc\n\n".chomp("\n").should == "abc\n"
end
it "removes one trailing carriage return" do
"abc\r\r".chomp("\n").should == "abc\r"
end
it "removes one trailing carriage return, newline pair" do
"abc\r\n\r\n".chomp("\n").should == "abc\r\n"
end
ruby_version_is ''...'2.7' do
it "taints the result if self is tainted" do
"abc".taint.chomp("\n").tainted?.should be_true
end
end
it "returns an empty String when self is empty" do
"".chomp("\n").should == ""
end
end
describe "when passed an Object" do
it "calls #to_str to convert to a String" do
arg = mock("string chomp")
arg.should_receive(:to_str).and_return("bc")
"abc".chomp(arg).should == "a"
end
it "raises a TypeError if #to_str does not return a String" do
arg = mock("string chomp")
arg.should_receive(:to_str).and_return(1)
-> { "abc".chomp(arg) }.should raise_error(TypeError)
end
end
describe "when passed a String" do
it "removes the trailing characters if they match the argument" do
"abcabc".chomp("abc").should == "abc"
end
it "does not modify the String if the argument does not match the trailing characters" do
"abc".chomp("def").should == "abc"
end
it "returns an empty String when self is empty" do
"".chomp("abc").should == ""
end
ruby_version_is ''...'2.7' do
it "taints the result if self is tainted" do
"abc".taint.chomp("abc").tainted?.should be_true
end
it "does not taint the result when the argument is tainted" do
"abc".chomp("abc".taint).tainted?.should be_false
end
end
it "returns an empty String when the argument equals self" do
"abc".chomp("abc").should == ""
end
end
end
describe "String#chomp!" do
describe "when passed no argument" do
before do
# Ensure that $/ is set to the default value
@verbose, $VERBOSE = $VERBOSE, nil
@dollar_slash, $/ = $/, "\n"
end
after do
$/ = @dollar_slash
$VERBOSE = @verbose
end
it "modifies self" do
str = "abc\n"
str.chomp!.should equal(str)
end
it "returns nil if self is not modified" do
"abc".chomp!.should be_nil
end
it "removes one trailing newline" do
"abc\n\n".chomp!.should == "abc\n"
end
it "removes one trailing carriage return" do
"abc\r\r".chomp!.should == "abc\r"
end
it "removes one trailing carriage return, newline pair" do
"abc\r\n\r\n".chomp!.should == "abc\r\n"
end
it "returns nil when self is empty" do
"".chomp!.should be_nil
end
ruby_version_is ''...'2.7' do
it "taints the result if self is tainted" do
"abc\n".taint.chomp!.tainted?.should be_true
end
end
it "returns subclass instances when called on a subclass" do
str = StringSpecs::MyString.new("hello\n").chomp!
str.should be_an_instance_of(StringSpecs::MyString)
end
it "removes trailing characters that match $/ when it has been assigned a value" do
$/ = "cdef"
"abcdef".chomp!.should == "ab"
end
end
describe "when passed nil" do
it "returns nil" do
"abc\r\n".chomp!(nil).should be_nil
end
it "returns nil when self is empty" do
"".chomp!(nil).should be_nil
end
end
describe "when passed ''" do
it "removes a final newline" do
"abc\n".chomp!("").should == "abc"
end
it "removes a final carriage return, newline" do
"abc\r\n".chomp!("").should == "abc"
end
it "does not remove a final carriage return" do
"abc\r".chomp!("").should be_nil
end
it "removes more than one trailing newlines" do
"abc\n\n\n".chomp!("").should == "abc"
end
it "removes more than one trailing carriage return, newline pairs" do
"abc\r\n\r\n\r\n".chomp!("").should == "abc"
end
ruby_version_is ''...'2.7' do
it "taints the result if self is tainted" do
"abc\n".taint.chomp!("").tainted?.should be_true
end
end
it "returns nil when self is empty" do
"".chomp!("").should be_nil
end
end
describe "when passed '\\n'" do
it "removes one trailing newline" do
"abc\n\n".chomp!("\n").should == "abc\n"
end
it "removes one trailing carriage return" do
"abc\r\r".chomp!("\n").should == "abc\r"
end
it "removes one trailing carriage return, newline pair" do
"abc\r\n\r\n".chomp!("\n").should == "abc\r\n"
end
ruby_version_is ''...'2.7' do
it "taints the result if self is tainted" do
"abc\n".taint.chomp!("\n").tainted?.should be_true
end
end
it "returns nil when self is empty" do
"".chomp!("\n").should be_nil
end
end
describe "when passed an Object" do
it "calls #to_str to convert to a String" do
arg = mock("string chomp")
arg.should_receive(:to_str).and_return("bc")
"abc".chomp!(arg).should == "a"
end
it "raises a TypeError if #to_str does not return a String" do
arg = mock("string chomp")
arg.should_receive(:to_str).and_return(1)
-> { "abc".chomp!(arg) }.should raise_error(TypeError)
end
end
describe "when passed a String" do
it "removes the trailing characters if they match the argument" do
"abcabc".chomp!("abc").should == "abc"
end
it "returns nil if the argument does not match the trailing characters" do
"abc".chomp!("def").should be_nil
end
it "returns nil when self is empty" do
"".chomp!("abc").should be_nil
end
ruby_version_is ''...'2.7' do
it "taints the result if self is tainted" do
"abc".taint.chomp!("abc").tainted?.should be_true
end
it "does not taint the result when the argument is tainted" do
"abc".chomp!("abc".taint).tainted?.should be_false
end
end
end
it "raises a FrozenError on a frozen instance when it is modified" do
a = "string\n\r"
a.freeze
-> { a.chomp! }.should raise_error(FrozenError)
end
# see [ruby-core:23666]
it "raises a FrozenError on a frozen instance when it would not be modified" do
a = "string\n\r"
a.freeze
-> { a.chomp!(nil) }.should raise_error(FrozenError)
-> { a.chomp!("x") }.should raise_error(FrozenError)
end
end
describe "String#chomp" do
before :each do
@verbose, $VERBOSE = $VERBOSE, nil
@before_separator = $/
end
after :each do
$/ = @before_separator
$VERBOSE = @verbose
end
it "does not modify a multi-byte character" do
"あれ".chomp.should == "あれ"
end
it "removes the final carriage return, newline from a multibyte String" do
"あれ\r\n".chomp.should == "あれ"
end
it "removes the final carriage return, newline from a non-ASCII String" do
str = "abc\r\n".encode "utf-32be"
str.chomp.should == "abc".encode("utf-32be")
end
it "removes the final carriage return, newline from a non-ASCII String when the record separator is changed" do
$/ = "\n".encode("utf-8")
str = "abc\r\n".encode "utf-32be"
str.chomp.should == "abc".encode("utf-32be")
end
end
describe "String#chomp!" do
before :each do
@verbose, $VERBOSE = $VERBOSE, nil
@before_separator = $/
end
after :each do
$/ = @before_separator
$VERBOSE = @verbose
end
it "returns nil when the String is not modified" do
"あれ".chomp!.should be_nil
end
it "removes the final carriage return, newline from a multibyte String" do
"あれ\r\n".chomp!.should == "あれ"
end
it "removes the final carriage return, newline from a non-ASCII String" do
str = "abc\r\n".encode "utf-32be"
str.chomp!.should == "abc".encode("utf-32be")
end
it "removes the final carriage return, newline from a non-ASCII String when the record separator is changed" do
$/ = "\n".encode("utf-8")
str = "abc\r\n".encode "utf-32be"
str.chomp!.should == "abc".encode("utf-32be")
end
end
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