diff options
Diffstat (limited to 'spec/ruby/core/string/shared/slice.rb')
| -rw-r--r-- | spec/ruby/core/string/shared/slice.rb | 557 |
1 files changed, 557 insertions, 0 deletions
diff --git a/spec/ruby/core/string/shared/slice.rb b/spec/ruby/core/string/shared/slice.rb new file mode 100644 index 0000000000..697fa2e530 --- /dev/null +++ b/spec/ruby/core/string/shared/slice.rb @@ -0,0 +1,557 @@ +describe :string_slice, shared: true do + it "returns the character code of the character at the given index" do + "hello".send(@method, 0).should == ?h + "hello".send(@method, -1).should == ?o + end + + it "returns nil if index is outside of self" do + "hello".send(@method, 20).should == nil + "hello".send(@method, -20).should == nil + + "".send(@method, 0).should == nil + "".send(@method, -1).should == nil + end + + it "calls to_int on the given index" do + "hello".send(@method, 0.5).should == ?h + + obj = mock('1') + obj.should_receive(:to_int).and_return(1) + "hello".send(@method, obj).should == ?e + end + + it "raises a TypeError if the given index is nil" do + lambda { "hello".send(@method, nil) }.should raise_error(TypeError) + end + + it "raises a TypeError if the given index can't be converted to an Integer" do + lambda { "hello".send(@method, mock('x')) }.should raise_error(TypeError) + lambda { "hello".send(@method, {}) }.should raise_error(TypeError) + lambda { "hello".send(@method, []) }.should raise_error(TypeError) + end + + it "raises a RangeError if the index is too big" do + lambda { "hello".send(@method, bignum_value) }.should raise_error(RangeError) + end +end + +describe :string_slice_index_length, shared: true do + it "returns the substring starting at the given index with the given length" do + "hello there".send(@method, 0,0).should == "" + "hello there".send(@method, 0,1).should == "h" + "hello there".send(@method, 0,3).should == "hel" + "hello there".send(@method, 0,6).should == "hello " + "hello there".send(@method, 0,9).should == "hello the" + "hello there".send(@method, 0,12).should == "hello there" + + "hello there".send(@method, 1,0).should == "" + "hello there".send(@method, 1,1).should == "e" + "hello there".send(@method, 1,3).should == "ell" + "hello there".send(@method, 1,6).should == "ello t" + "hello there".send(@method, 1,9).should == "ello ther" + "hello there".send(@method, 1,12).should == "ello there" + + "hello there".send(@method, 3,0).should == "" + "hello there".send(@method, 3,1).should == "l" + "hello there".send(@method, 3,3).should == "lo " + "hello there".send(@method, 3,6).should == "lo the" + "hello there".send(@method, 3,9).should == "lo there" + + "hello there".send(@method, 4,0).should == "" + "hello there".send(@method, 4,3).should == "o t" + "hello there".send(@method, 4,6).should == "o ther" + "hello there".send(@method, 4,9).should == "o there" + + "foo".send(@method, 2,1).should == "o" + "foo".send(@method, 3,0).should == "" + "foo".send(@method, 3,1).should == "" + + "".send(@method, 0,0).should == "" + "".send(@method, 0,1).should == "" + + "x".send(@method, 0,0).should == "" + "x".send(@method, 0,1).should == "x" + "x".send(@method, 1,0).should == "" + "x".send(@method, 1,1).should == "" + + "x".send(@method, -1,0).should == "" + "x".send(@method, -1,1).should == "x" + + "hello there".send(@method, -3,2).should == "er" + end + + it "always taints resulting strings when self is tainted" do + str = "hello world" + str.taint + + str.send(@method, 0,0).tainted?.should == true + str.send(@method, 0,1).tainted?.should == true + str.send(@method, 2,1).tainted?.should == true + end + + it "returns a string with the same encoding" do + s = "hello there" + s.send(@method, 1, 9).encoding.should == s.encoding + + a = "hello".force_encoding("binary") + b = " there".force_encoding("ISO-8859-1") + c = (a + b).force_encoding(Encoding::US_ASCII) + + c.send(@method, 0, 5).encoding.should == Encoding::US_ASCII + c.send(@method, 5, 6).encoding.should == Encoding::US_ASCII + c.send(@method, 1, 3).encoding.should == Encoding::US_ASCII + c.send(@method, 8, 2).encoding.should == Encoding::US_ASCII + c.send(@method, 1, 10).encoding.should == Encoding::US_ASCII + end + + it "returns nil if the offset falls outside of self" do + "hello there".send(@method, 20,3).should == nil + "hello there".send(@method, -20,3).should == nil + + "".send(@method, 1,0).should == nil + "".send(@method, 1,1).should == nil + + "".send(@method, -1,0).should == nil + "".send(@method, -1,1).should == nil + + "x".send(@method, 2,0).should == nil + "x".send(@method, 2,1).should == nil + + "x".send(@method, -2,0).should == nil + "x".send(@method, -2,1).should == nil + end + + it "returns nil if the length is negative" do + "hello there".send(@method, 4,-3).should == nil + "hello there".send(@method, -4,-3).should == nil + end + + it "calls to_int on the given index and the given length" do + "hello".send(@method, 0.5, 1).should == "h" + "hello".send(@method, 0.5, 2.5).should == "he" + "hello".send(@method, 1, 2.5).should == "el" + + obj = mock('2') + obj.should_receive(:to_int).exactly(4).times.and_return(2) + + "hello".send(@method, obj, 1).should == "l" + "hello".send(@method, obj, obj).should == "ll" + "hello".send(@method, 0, obj).should == "he" + end + + it "raises a TypeError when idx or length can't be converted to an integer" do + lambda { "hello".send(@method, mock('x'), 0) }.should raise_error(TypeError) + lambda { "hello".send(@method, 0, mock('x')) }.should raise_error(TypeError) + + # I'm deliberately including this here. + # It means that str.send(@method, other, idx) isn't supported. + lambda { "hello".send(@method, "", 0) }.should raise_error(TypeError) + end + + it "raises a TypeError when the given index or the given length is nil" do + lambda { "hello".send(@method, 1, nil) }.should raise_error(TypeError) + lambda { "hello".send(@method, nil, 1) }.should raise_error(TypeError) + lambda { "hello".send(@method, nil, nil) }.should raise_error(TypeError) + end + + it "raises a RangeError if the index or length is too big" do + lambda { "hello".send(@method, bignum_value, 1) }.should raise_error(RangeError) + lambda { "hello".send(@method, 0, bignum_value) }.should raise_error(RangeError) + end + + it "returns subclass instances" do + s = StringSpecs::MyString.new("hello") + s.send(@method, 0,0).should be_an_instance_of(StringSpecs::MyString) + s.send(@method, 0,4).should be_an_instance_of(StringSpecs::MyString) + s.send(@method, 1,4).should be_an_instance_of(StringSpecs::MyString) + end + + it "handles repeated application" do + "hello world".send(@method, 6, 5).send(@method, 0, 1).should == 'w' + "hello world".send(@method, 6, 5).send(@method, 0, 5).should == 'world' + + "hello world".send(@method, 6, 5).send(@method, 1, 1).should == 'o' + "hello world".send(@method, 6, 5).send(@method, 1, 4).should == 'orld' + + "hello world".send(@method, 6, 5).send(@method, 4, 1).should == 'd' + "hello world".send(@method, 6, 5).send(@method, 5, 0).should == '' + + "hello world".send(@method, 6, 0).send(@method, -1, 0).should == nil + "hello world".send(@method, 6, 0).send(@method, 1, 1).should == nil + end +end + +describe :string_slice_range, shared: true do + it "returns the substring given by the offsets of the range" do + "hello there".send(@method, 1..1).should == "e" + "hello there".send(@method, 1..3).should == "ell" + "hello there".send(@method, 1...3).should == "el" + "hello there".send(@method, -4..-2).should == "her" + "hello there".send(@method, -4...-2).should == "he" + "hello there".send(@method, 5..-1).should == " there" + "hello there".send(@method, 5...-1).should == " ther" + + "".send(@method, 0..0).should == "" + + "x".send(@method, 0..0).should == "x" + "x".send(@method, 0..1).should == "x" + "x".send(@method, 0...1).should == "x" + "x".send(@method, 0..-1).should == "x" + + "x".send(@method, 1..1).should == "" + "x".send(@method, 1..-1).should == "" + end + + it "returns nil if the beginning of the range falls outside of self" do + "hello there".send(@method, 12..-1).should == nil + "hello there".send(@method, 20..25).should == nil + "hello there".send(@method, 20..1).should == nil + "hello there".send(@method, -20..1).should == nil + "hello there".send(@method, -20..-1).should == nil + + "".send(@method, -1..-1).should == nil + "".send(@method, -1...-1).should == nil + "".send(@method, -1..0).should == nil + "".send(@method, -1...0).should == nil + end + + it "returns an empty string if range.begin is inside self and > real end" do + "hello there".send(@method, 1...1).should == "" + "hello there".send(@method, 4..2).should == "" + "hello".send(@method, 4..-4).should == "" + "hello there".send(@method, -5..-6).should == "" + "hello there".send(@method, -2..-4).should == "" + "hello there".send(@method, -5..-6).should == "" + "hello there".send(@method, -5..2).should == "" + + "".send(@method, 0...0).should == "" + "".send(@method, 0..-1).should == "" + "".send(@method, 0...-1).should == "" + + "x".send(@method, 0...0).should == "" + "x".send(@method, 0...-1).should == "" + "x".send(@method, 1...1).should == "" + "x".send(@method, 1...-1).should == "" + end + + it "always taints resulting strings when self is tainted" do + str = "hello world" + str.taint + + str.send(@method, 0..0).tainted?.should == true + str.send(@method, 0...0).tainted?.should == true + str.send(@method, 0..1).tainted?.should == true + str.send(@method, 0...1).tainted?.should == true + str.send(@method, 2..3).tainted?.should == true + str.send(@method, 2..0).tainted?.should == true + end + + it "returns subclass instances" do + s = StringSpecs::MyString.new("hello") + s.send(@method, 0...0).should be_an_instance_of(StringSpecs::MyString) + s.send(@method, 0..4).should be_an_instance_of(StringSpecs::MyString) + s.send(@method, 1..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... + from.should_receive(:<=>).twice.and_return(0) + + from.should_receive(:to_int).twice.and_return(1) + to.should_receive(:to_int).twice.and_return(-2) + + "hello there".send(@method, from..to).should == "ello ther" + "hello there".send(@method, from...to).should == "ello the" + end + + it "works with Range subclasses" do + a = "GOOD" + range_incl = StringSpecs::MyRange.new(1, 2) + range_excl = StringSpecs::MyRange.new(-3, -1, true) + + a.send(@method, range_incl).should == "OO" + a.send(@method, range_excl).should == "OO" + end + + it "handles repeated application" do + "hello world".send(@method, 6..11).send(@method, 0..0).should == 'w' + "hello world".send(@method, 6..11).send(@method, 0..4).should == 'world' + + "hello world".send(@method, 6..11).send(@method, 1..1).should == 'o' + "hello world".send(@method, 6..11).send(@method, 1..4).should == 'orld' + + "hello world".send(@method, 6..11).send(@method, 4..4).should == 'd' + "hello world".send(@method, 6..11).send(@method, 5..4).should == '' + + "hello world".send(@method, 6..5).send(@method, -1..-1).should == nil + "hello world".send(@method, 6..5).send(@method, 1..1).should == nil + end +end + +describe :string_slice_regexp, shared: true do + it "returns the matching portion of self" do + "hello there".send(@method, /[aeiou](.)\1/).should == "ell" + "".send(@method, //).should == "" + end + + it "returns nil if there is no match" do + "hello there".send(@method, /xyz/).should == nil + end + + not_supported_on :opal do + 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.send(@method, //).tainted?.should == str.tainted? + str.send(@method, /hello/).tainted?.should == str.tainted? + + tainted_re = /./ + tainted_re.taint + + str.send(@method, tainted_re).tainted?.should == true + end + end + + it "returns an untrusted string if the regexp is untrusted" do + "hello".send(@method, /./.untrust).untrusted?.should be_true + end + end + + it "returns subclass instances" do + s = StringSpecs::MyString.new("hello") + s.send(@method, //).should be_an_instance_of(StringSpecs::MyString) + s.send(@method, /../).should be_an_instance_of(StringSpecs::MyString) + end + + it "sets $~ to MatchData when there is a match and nil when there's none" do + 'hello'.send(@method, /./) + $~[0].should == 'h' + + 'hello'.send(@method, /not/) + $~.should == nil + end +end + +describe :string_slice_regexp_index, shared: true do + it "returns the capture for the given index" do + "hello there".send(@method, /[aeiou](.)\1/, 0).should == "ell" + "hello there".send(@method, /[aeiou](.)\1/, 1).should == "l" + "hello there".send(@method, /[aeiou](.)\1/, -1).should == "l" + + "har".send(@method, /(.)(.)(.)/, 0).should == "har" + "har".send(@method, /(.)(.)(.)/, 1).should == "h" + "har".send(@method, /(.)(.)(.)/, 2).should == "a" + "har".send(@method, /(.)(.)(.)/, 3).should == "r" + "har".send(@method, /(.)(.)(.)/, -1).should == "r" + "har".send(@method, /(.)(.)(.)/, -2).should == "a" + "har".send(@method, /(.)(.)(.)/, -3).should == "h" + 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.send(@method, //, 0).tainted?.should == str.tainted? + str.send(@method, /hello/, 0).tainted?.should == str.tainted? + + str.send(@method, /(.)(.)(.)/, 0).tainted?.should == str.tainted? + str.send(@method, /(.)(.)(.)/, 1).tainted?.should == str.tainted? + str.send(@method, /(.)(.)(.)/, -1).tainted?.should == str.tainted? + str.send(@method, /(.)(.)(.)/, -2).tainted?.should == str.tainted? + + tainted_re = /(.)(.)(.)/ + tainted_re.taint + + str.send(@method, tainted_re, 0).tainted?.should == true + str.send(@method, tainted_re, 1).tainted?.should == true + str.send(@method, tainted_re, -1).tainted?.should == true + end + end + + not_supported_on :opal do + it "returns an untrusted string if the regexp is untrusted" do + "hello".send(@method, /(.)/.untrust, 1).untrusted?.should be_true + end + end + + it "returns nil if there is no match" do + "hello there".send(@method, /(what?)/, 1).should == nil + end + + it "returns nil if there is no capture for the given index" do + "hello there".send(@method, /[aeiou](.)\1/, 2).should == nil + # You can't refer to 0 using negative indices + "hello there".send(@method, /[aeiou](.)\1/, -2).should == nil + end + + it "calls to_int on the given index" do + obj = mock('2') + obj.should_receive(:to_int).and_return(2) + + "har".send(@method, /(.)(.)(.)/, 1.5).should == "h" + "har".send(@method, /(.)(.)(.)/, obj).should == "a" + end + + it "raises a TypeError when the given index can't be converted to Integer" do + lambda { "hello".send(@method, /(.)(.)(.)/, mock('x')) }.should raise_error(TypeError) + lambda { "hello".send(@method, /(.)(.)(.)/, {}) }.should raise_error(TypeError) + lambda { "hello".send(@method, /(.)(.)(.)/, []) }.should raise_error(TypeError) + end + + it "raises a TypeError when the given index is nil" do + lambda { "hello".send(@method, /(.)(.)(.)/, nil) }.should raise_error(TypeError) + end + + it "returns subclass instances" do + s = StringSpecs::MyString.new("hello") + s.send(@method, /(.)(.)/, 0).should be_an_instance_of(StringSpecs::MyString) + s.send(@method, /(.)(.)/, 1).should be_an_instance_of(StringSpecs::MyString) + end + + it "sets $~ to MatchData when there is a match and nil when there's none" do + 'hello'.send(@method, /.(.)/, 0) + $~[0].should == 'he' + + 'hello'.send(@method, /.(.)/, 1) + $~[1].should == 'e' + + 'hello'.send(@method, /not/, 0) + $~.should == nil + end +end + +describe :string_slice_string, shared: true do + it "returns other_str if it occurs in self" do + s = "lo" + "hello there".send(@method, s).should == s + 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| + strs.each do |other| + r = str.send(@method, other) + + r.tainted?.should == !r.nil? & other.tainted? + end + end + end + + it "doesn't set $~" do + $~ = nil + + 'hello'.send(@method, 'll') + $~.should == nil + end + + it "returns nil if there is no match" do + "hello there".send(@method, "bye").should == nil + end + + it "doesn't call to_str on its argument" do + o = mock('x') + o.should_not_receive(:to_str) + + lambda { "hello".send(@method, o) }.should raise_error(TypeError) + end + + it "returns a subclass instance when given a subclass instance" do + s = StringSpecs::MyString.new("el") + r = "hello".send(@method, s) + r.should == "el" + r.should be_an_instance_of(StringSpecs::MyString) + end +end + +describe :string_slice_regexp_group, shared: true do + not_supported_on :opal do + it "returns the capture for the given name" do + "hello there".send(@method, /(?<g>[aeiou](.))/, 'g').should == "el" + "hello there".send(@method, /[aeiou](?<g>.)/, 'g').should == "l" + + "har".send(@method, /(?<g>(.)(.)(.))/, 'g').should == "har" + "har".send(@method, /(?<h>.)(.)(.)/, 'h').should == "h" + "har".send(@method, /(.)(?<a>.)(.)/, 'a').should == "a" + "har".send(@method, /(.)(.)(?<r>.)/, 'r').should == "r" + "har".send(@method, /(?<h>.)(?<a>.)(?<r>.)/, 'r').should == "r" + end + + it "returns the last capture for duplicate names" do + "hello there".send(@method, /(?<g>h)(?<g>.)/, 'g').should == "e" + "hello there".send(@method, /(?<g>h)(?<g>.)(?<f>.)/, 'g').should == "e" + end + + it "returns the innermost capture for nested duplicate names" do + "hello there".send(@method, /(?<g>h(?<g>.))/, 'g').should == "e" + 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.send(@method, /(?<hi>hello)/, 'hi').tainted?.should == str.tainted? + + str.send(@method, /(?<g>(.)(.)(.))/, 'g').tainted?.should == str.tainted? + str.send(@method, /(?<h>.)(.)(.)/, 'h').tainted?.should == str.tainted? + str.send(@method, /(.)(?<a>.)(.)/, 'a').tainted?.should == str.tainted? + str.send(@method, /(.)(.)(?<r>.)/, 'r').tainted?.should == str.tainted? + str.send(@method, /(?<h>.)(?<a>.)(?<r>.)/, 'r').tainted?.should == str.tainted? + + tainted_re = /(?<a>.)(?<b>.)(?<c>.)/ + tainted_re.taint + + str.send(@method, tainted_re, 'a').tainted?.should be_true + str.send(@method, tainted_re, 'b').tainted?.should be_true + str.send(@method, tainted_re, 'c').tainted?.should be_true + end + end + + it "returns nil if there is no match" do + "hello there".send(@method, /(?<whut>what?)/, 'whut').should be_nil + end + + it "raises an IndexError if there is no capture for the given name" do + lambda do + "hello there".send(@method, /[aeiou](.)\1/, 'non') + end.should raise_error(IndexError) + end + + it "raises a TypeError when the given name is not a String" do + lambda { "hello".send(@method, /(?<q>.)/, mock('x')) }.should raise_error(TypeError) + lambda { "hello".send(@method, /(?<q>.)/, {}) }.should raise_error(TypeError) + lambda { "hello".send(@method, /(?<q>.)/, []) }.should raise_error(TypeError) + end + + it "raises an IndexError when given the empty String as a group name" do + lambda { "hello".send(@method, /(?<q>)/, '') }.should raise_error(IndexError) + end + + it "returns subclass instances" do + s = StringSpecs::MyString.new("hello") + s.send(@method, /(?<q>.)/, 'q').should be_an_instance_of(StringSpecs::MyString) + end + + it "sets $~ to MatchData when there is a match and nil when there's none" do + 'hello'.send(@method, /(?<hi>.(.))/, 'hi') + $~[0].should == 'he' + + 'hello'.send(@method, /(?<non>not)/, 'non') + $~.should be_nil + end + end +end + +describe :string_slice_symbol, shared: true do + it "raises TypeError" do + lambda { 'hello'.send(@method, :hello) }.should raise_error(TypeError) + end +end |