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# -*- encoding: utf-8 -*-
require_relative '../../spec_helper'
require_relative 'fixtures/classes'
require_relative 'shared/slice'
describe "String#slice" do
it_behaves_like :string_slice, :slice
end
describe "String#slice with index, length" do
it_behaves_like :string_slice_index_length, :slice
end
describe "String#slice with Range" do
it_behaves_like :string_slice_range, :slice
end
describe "String#slice with Regexp" do
it_behaves_like :string_slice_regexp, :slice
end
describe "String#slice with Regexp, index" do
it_behaves_like :string_slice_regexp_index, :slice
end
describe "String#slice with Regexp, group" do
it_behaves_like :string_slice_regexp_group, :slice
end
describe "String#slice with String" do
it_behaves_like :string_slice_string, :slice
end
describe "String#slice with Symbol" do
it_behaves_like :string_slice_symbol, :slice
end
describe "String#slice! with index" do
it "deletes and return the char at the given position" do
a = "hello"
a.slice!(1).should == ?e
a.should == "hllo"
a.slice!(-1).should == ?o
a.should == "hll"
end
it "returns nil if idx is outside of self" do
a = "hello"
a.slice!(20).should == nil
a.should == "hello"
a.slice!(-20).should == nil
a.should == "hello"
end
it "raises a #{frozen_error_class} if self is frozen" do
-> { "hello".freeze.slice!(1) }.should raise_error(frozen_error_class)
-> { "hello".freeze.slice!(10) }.should raise_error(frozen_error_class)
-> { "".freeze.slice!(0) }.should raise_error(frozen_error_class)
end
it "calls to_int on index" do
"hello".slice!(0.5).should == ?h
obj = mock('1')
obj.should_receive(:to_int).at_least(1).and_return(1)
"hello".slice!(obj).should == ?e
obj = mock('1')
obj.should_receive(:respond_to?).at_least(1).with(:to_int, true).and_return(true)
obj.should_receive(:method_missing).at_least(1).with(:to_int).and_return(1)
"hello".slice!(obj).should == ?e
end
it "returns the character given by the character index" do
"hellö there".slice!(1).should == "e"
"hellö there".slice!(4).should == "ö"
"hellö there".slice!(6).should == "t"
end
end
describe "String#slice! with index, length" do
it "deletes and returns the substring at idx and the given length" do
a = "hello"
a.slice!(1, 2).should == "el"
a.should == "hlo"
a.slice!(1, 0).should == ""
a.should == "hlo"
a.slice!(-2, 4).should == "lo"
a.should == "h"
end
it "always taints resulting strings when self is tainted" do
str = "hello world"
str.taint
str.slice!(0, 0).tainted?.should == true
str.slice!(2, 1).tainted?.should == true
end
it "returns nil if the given position is out of self" do
a = "hello"
a.slice(10, 3).should == nil
a.should == "hello"
a.slice(-10, 20).should == nil
a.should == "hello"
end
it "returns nil if the length is negative" do
a = "hello"
a.slice(4, -3).should == nil
a.should == "hello"
end
it "raises a #{frozen_error_class} if self is frozen" do
-> { "hello".freeze.slice!(1, 2) }.should raise_error(frozen_error_class)
-> { "hello".freeze.slice!(10, 3) }.should raise_error(frozen_error_class)
-> { "hello".freeze.slice!(-10, 3)}.should raise_error(frozen_error_class)
-> { "hello".freeze.slice!(4, -3) }.should raise_error(frozen_error_class)
-> { "hello".freeze.slice!(10, 3) }.should raise_error(frozen_error_class)
-> { "hello".freeze.slice!(-10, 3)}.should raise_error(frozen_error_class)
-> { "hello".freeze.slice!(4, -3) }.should raise_error(frozen_error_class)
end
it "calls to_int on idx and length" do
"hello".slice!(0.5, 2.5).should == "he"
obj = mock('2')
def obj.to_int() 2 end
"hello".slice!(obj, obj).should == "ll"
obj = mock('2')
def obj.respond_to?(name, *) name == :to_int; end
def obj.method_missing(name, *) name == :to_int ? 2 : super; end
"hello".slice!(obj, obj).should == "ll"
end
it "returns subclass instances" do
s = StringSpecs::MyString.new("hello")
s.slice!(0, 0).should be_an_instance_of(StringSpecs::MyString)
s.slice!(0, 4).should be_an_instance_of(StringSpecs::MyString)
end
it "returns the substring given by the character offsets" do
"hellö there".slice!(1,0).should == ""
"hellö there".slice!(1,3).should == "ell"
"hellö there".slice!(1,6).should == "ellö t"
"hellö there".slice!(1,9).should == "ellö ther"
end
it "treats invalid bytes as single bytes" do
xE6xCB = [0xE6,0xCB].pack('CC').force_encoding('utf-8')
"a#{xE6xCB}b".slice!(1, 2).should == xE6xCB
end
end
describe "String#slice! Range" do
it "deletes and return the substring given by the offsets of the range" do
a = "hello"
a.slice!(1..3).should == "ell"
a.should == "ho"
a.slice!(0..0).should == "h"
a.should == "o"
a.slice!(0...0).should == ""
a.should == "o"
# Edge Case?
"hello".slice!(-3..-9).should == ""
end
it "returns nil if the given range is out of self" do
a = "hello"
a.slice!(-6..-9).should == nil
a.should == "hello"
b = "hello"
b.slice!(10..20).should == nil
b.should == "hello"
end
it "always taints resulting strings when self is tainted" do
str = "hello world"
str.taint
str.slice!(0..0).tainted?.should == true
str.slice!(2..3).tainted?.should == true
end
it "returns subclass instances" do
s = StringSpecs::MyString.new("hello")
s.slice!(0...0).should be_an_instance_of(StringSpecs::MyString)
s.slice!(0..4).should be_an_instance_of(StringSpecs::MyString)
end
it "calls to_int on range arguments" do
from = mock('from')
to = mock('to')
# So we can construct a range out of them...
def from.<=>(o) 0 end
def to.<=>(o) 0 end
def from.to_int() 1 end
def to.to_int() -2 end
"hello there".slice!(from..to).should == "ello ther"
from = mock('from')
to = mock('to')
def from.<=>(o) 0 end
def to.<=>(o) 0 end
def from.respond_to?(name, *) name == :to_int; end
def from.method_missing(name) name == :to_int ? 1 : super; end
def to.respond_to?(name, *) name == :to_int; end
def to.method_missing(name) name == :to_int ? -2 : super; end
"hello there".slice!(from..to).should == "ello ther"
end
it "works with Range subclasses" do
a = "GOOD"
range_incl = StringSpecs::MyRange.new(1, 2)
a.slice!(range_incl).should == "OO"
end
it "returns the substring given by the character offsets of the range" do
"hellö there".slice!(1..1).should == "e"
"hellö there".slice!(1..3).should == "ell"
"hellö there".slice!(1...3).should == "el"
"hellö there".slice!(-4..-2).should == "her"
"hellö there".slice!(-4...-2).should == "he"
"hellö there".slice!(5..-1).should == " there"
"hellö there".slice!(5...-1).should == " ther"
end
it "raises a #{frozen_error_class} on a frozen instance that is modified" do
-> { "hello".freeze.slice!(1..3) }.should raise_error(frozen_error_class)
end
# see redmine #1551
it "raises a #{frozen_error_class} on a frozen instance that would not be modified" do
-> { "hello".freeze.slice!(10..20)}.should raise_error(frozen_error_class)
end
end
describe "String#slice! with Regexp" do
it "deletes and returns the first match from self" do
s = "this is a string"
s.slice!(/s.*t/).should == 's is a st'
s.should == 'thiring'
c = "hello hello"
c.slice!(/llo/).should == "llo"
c.should == "he hello"
end
it "returns nil if there was no match" do
s = "this is a string"
s.slice!(/zzz/).should == nil
s.should == "this is a string"
end
it "always taints resulting strings when self or regexp is tainted" do
strs = ["hello world"]
strs += strs.map { |s| s.dup.taint }
strs.each do |str|
str = str.dup
str.slice!(//).tainted?.should == str.tainted?
str.slice!(/hello/).tainted?.should == str.tainted?
tainted_re = /./
tainted_re.taint
str.slice!(tainted_re).tainted?.should == true
end
end
it "doesn't taint self when regexp is tainted" do
s = "hello"
s.slice!(/./.taint)
s.tainted?.should == false
end
it "returns subclass instances" do
s = StringSpecs::MyString.new("hello")
s.slice!(//).should be_an_instance_of(StringSpecs::MyString)
s.slice!(/../).should be_an_instance_of(StringSpecs::MyString)
end
it "returns the matching portion of self with a multi byte character" do
"hëllo there".slice!(/[ë](.)\1/).should == "ëll"
"".slice!(//).should == ""
end
it "sets $~ to MatchData when there is a match and nil when there's none" do
'hello'.slice!(/./)
$~[0].should == 'h'
'hello'.slice!(/not/)
$~.should == nil
end
it "raises a #{frozen_error_class} on a frozen instance that is modified" do
-> { "this is a string".freeze.slice!(/s.*t/) }.should raise_error(frozen_error_class)
end
it "raises a #{frozen_error_class} on a frozen instance that would not be modified" do
-> { "this is a string".freeze.slice!(/zzz/) }.should raise_error(frozen_error_class)
end
end
describe "String#slice! with Regexp, index" do
it "deletes and returns the capture for idx from self" do
str = "hello there"
str.slice!(/[aeiou](.)\1/, 0).should == "ell"
str.should == "ho there"
str.slice!(/(t)h/, 1).should == "t"
str.should == "ho here"
end
it "always taints resulting strings when self or regexp is tainted" do
strs = ["hello world"]
strs += strs.map { |s| s.dup.taint }
strs.each do |str|
str = str.dup
str.slice!(//, 0).tainted?.should == str.tainted?
str.slice!(/hello/, 0).tainted?.should == str.tainted?
tainted_re = /(.)(.)(.)/
tainted_re.taint
str.slice!(tainted_re, 1).tainted?.should == true
end
end
it "doesn't taint self when regexp is tainted" do
s = "hello"
s.slice!(/(.)(.)/.taint, 1)
s.tainted?.should == false
end
it "returns nil if there was no match" do
s = "this is a string"
s.slice!(/x(zzz)/, 1).should == nil
s.should == "this is a string"
end
it "returns nil if there is no capture for idx" do
"hello there".slice!(/[aeiou](.)\1/, 2).should == nil
# You can't refer to 0 using negative indices
"hello there".slice!(/[aeiou](.)\1/, -2).should == nil
end
it "accepts a Float for capture index" do
"har".slice!(/(.)(.)(.)/, 1.5).should == "h"
end
it "calls #to_int to convert an Object to capture index" do
obj = mock('2')
obj.should_receive(:to_int).at_least(1).times.and_return(2)
"har".slice!(/(.)(.)(.)/, obj).should == "a"
end
it "returns subclass instances" do
s = StringSpecs::MyString.new("hello")
s.slice!(/(.)(.)/, 0).should be_an_instance_of(StringSpecs::MyString)
s.slice!(/(.)(.)/, 1).should be_an_instance_of(StringSpecs::MyString)
end
it "returns the encoding aware capture for the given index" do
"hår".slice!(/(.)(.)(.)/, 0).should == "hår"
"hår".slice!(/(.)(.)(.)/, 1).should == "h"
"hår".slice!(/(.)(.)(.)/, 2).should == "å"
"hår".slice!(/(.)(.)(.)/, 3).should == "r"
"hår".slice!(/(.)(.)(.)/, -1).should == "r"
"hår".slice!(/(.)(.)(.)/, -2).should == "å"
"hår".slice!(/(.)(.)(.)/, -3).should == "h"
end
it "sets $~ to MatchData when there is a match and nil when there's none" do
'hello'[/.(.)/, 0]
$~[0].should == 'he'
'hello'[/.(.)/, 1]
$~[1].should == 'e'
'hello'[/not/, 0]
$~.should == nil
end
it "raises a #{frozen_error_class} if self is frozen" do
-> { "this is a string".freeze.slice!(/s.*t/) }.should raise_error(frozen_error_class)
-> { "this is a string".freeze.slice!(/zzz/, 0)}.should raise_error(frozen_error_class)
-> { "this is a string".freeze.slice!(/(.)/, 2)}.should raise_error(frozen_error_class)
end
end
describe "String#slice! with String" do
it "removes and returns the first occurrence of other_str from self" do
c = "hello hello"
c.slice!('llo').should == "llo"
c.should == "he hello"
end
it "taints resulting strings when other is tainted" do
strs = ["", "hello world", "hello"]
strs += strs.map { |s| s.dup.taint }
strs.each do |str|
str = str.dup
strs.each do |other|
other = other.dup
r = str.slice!(other)
r.tainted?.should == !r.nil? & other.tainted?
end
end
end
it "doesn't set $~" do
$~ = nil
'hello'.slice!('ll')
$~.should == nil
end
it "returns nil if self does not contain other" do
a = "hello"
a.slice!('zzz').should == nil
a.should == "hello"
end
it "doesn't call to_str on its argument" do
o = mock('x')
o.should_not_receive(:to_str)
-> { "hello".slice!(o) }.should raise_error(TypeError)
end
it "returns a subclass instance when given a subclass instance" do
s = StringSpecs::MyString.new("el")
r = "hello".slice!(s)
r.should == "el"
r.should be_an_instance_of(StringSpecs::MyString)
end
it "raises a #{frozen_error_class} if self is frozen" do
-> { "hello hello".freeze.slice!('llo') }.should raise_error(frozen_error_class)
-> { "this is a string".freeze.slice!('zzz')}.should raise_error(frozen_error_class)
-> { "this is a string".freeze.slice!('zzz')}.should raise_error(frozen_error_class)
end
end
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