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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
require_relative 'shared/strip'
describe "String#rstrip" do
it_behaves_like :string_strip, :rstrip
it "returns a copy of self with trailing whitespace removed" do
" hello ".rstrip.should == " hello"
" hello world ".rstrip.should == " hello world"
" hello world \n\r\t\n\v\r".rstrip.should == " hello world"
"hello".rstrip.should == "hello"
"hello\x00".rstrip.should == "hello"
"こにちわ ".rstrip.should == "こにちわ"
end
it "works with lazy substrings" do
" hello "[1...-1].rstrip.should == " hello"
" hello world "[1...-1].rstrip.should == " hello world"
" hello world \n\r\t\n\v\r"[1...-1].rstrip.should == " hello world"
" こにちわ "[1...-1].rstrip.should == "こにちわ"
end
it "returns a copy of self with all trailing whitespace and NULL bytes removed" do
"\x00 \x00hello\x00 \x00".rstrip.should == "\x00 \x00hello"
end
end
describe "String#rstrip!" do
it "modifies self in place and returns self" do
a = " hello "
a.rstrip!.should equal(a)
a.should == " hello"
end
it "modifies self removing trailing NULL bytes and whitespace" do
a = "\x00 \x00hello\x00 \x00"
a.rstrip!
a.should == "\x00 \x00hello"
end
it "returns nil if no modifications were made" do
a = "hello"
a.rstrip!.should == nil
a.should == "hello"
end
it "makes a string empty if it is only whitespace" do
"".rstrip!.should == nil
" ".rstrip.should == ""
" ".rstrip.should == ""
end
ruby_version_is '3.0' do
it "removes trailing NULL bytes and whitespace" do
a = "\000 goodbye \000"
a.rstrip!
a.should == "\000 goodbye"
end
end
it "raises a FrozenError on a frozen instance that is modified" do
-> { " hello ".freeze.rstrip! }.should raise_error(FrozenError)
end
# see [ruby-core:23666]
it "raises a FrozenError on a frozen instance that would not be modified" do
-> { "hello".freeze.rstrip! }.should raise_error(FrozenError)
-> { "".freeze.rstrip! }.should raise_error(FrozenError)
end
it "raises an ArgumentError if the last non-space codepoint is invalid" do
s = "abc\xDF".force_encoding(Encoding::UTF_8)
s.valid_encoding?.should be_false
-> { s.rstrip! }.should raise_error(ArgumentError)
s = "abc\xDF ".force_encoding(Encoding::UTF_8)
s.valid_encoding?.should be_false
-> { s.rstrip! }.should raise_error(ArgumentError)
end
end
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