diff options
Diffstat (limited to 'spec/ruby/language/regexp/back-references_spec.rb')
| -rw-r--r-- | spec/ruby/language/regexp/back-references_spec.rb | 63 |
1 files changed, 36 insertions, 27 deletions
diff --git a/spec/ruby/language/regexp/back-references_spec.rb b/spec/ruby/language/regexp/back-references_spec.rb index 26750c20c5..3b4c5656a2 100644 --- a/spec/ruby/language/regexp/back-references_spec.rb +++ b/spec/ruby/language/regexp/back-references_spec.rb @@ -22,6 +22,15 @@ describe "Regexps with back-references" do $10.should == "0" end + it "returns nil for numbered variable with too large index" do + -> { + eval(<<~CODE).should == nil + "a" =~ /(.)/ + eval('$4294967296') + CODE + }.should complain(/warning: ('|`)\$4294967296' is too big for a number variable, always nil/) + end + it "will not clobber capture variables across threads" do cap1, cap2, cap3 = nil "foo" =~ /(o+)/ @@ -40,7 +49,7 @@ describe "Regexps with back-references" do it "supports \<n> (backreference to previous group match)" do /(foo.)\1/.match("foo1foo1").to_a.should == ["foo1foo1", "foo1"] - /(foo.)\1/.match("foo1foo2").should be_nil + /(foo.)\1/.match("foo1foo2").should == nil end it "resets nested \<n> backreference before match of outer subexpression" do @@ -73,7 +82,7 @@ describe "Regexps with back-references" do end it "0 is not a valid backreference" do - -> { Regexp.new("\\k<0>") }.should raise_error(RegexpError) + -> { Regexp.new("\\k<0>") }.should.raise(RegexpError) end it "allows numeric conditional backreferences" do @@ -83,7 +92,7 @@ describe "Regexps with back-references" do end it "allows either <> or '' in named conditional backreferences" do - -> { Regexp.new("(?<a>a)(?(a)a|b)") }.should raise_error(RegexpError) + -> { Regexp.new("(?<a>a)(?(a)a|b)") }.should.raise(RegexpError) /(?<a>a)(?(<a>)a|b)/.match("aa").to_a.should == [ "aa", "a" ] /(?<a>a)(?('a')a|b)/.match("aa").to_a.should == [ "aa", "a" ] end @@ -109,32 +118,32 @@ describe "Regexps with back-references" do end it "named capture groups invalidate numeric backreferences" do - -> { Regexp.new("(?<a>a)\\1") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a>a)\\k<1>") }.should raise_error(RegexpError) - -> { Regexp.new("(a)(?<a>a)\\1") }.should raise_error(RegexpError) - -> { Regexp.new("(a)(?<a>a)\\k<1>") }.should raise_error(RegexpError) + -> { Regexp.new("(?<a>a)\\1") }.should.raise(RegexpError) + -> { Regexp.new("(?<a>a)\\k<1>") }.should.raise(RegexpError) + -> { Regexp.new("(a)(?<a>a)\\1") }.should.raise(RegexpError) + -> { Regexp.new("(a)(?<a>a)\\k<1>") }.should.raise(RegexpError) end it "treats + or - as the beginning of a level specifier in \\k<> backreferences and (?(...)...|...) conditional backreferences" do - -> { Regexp.new("(?<a+>a)\\k<a+>") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a+b>a)\\k<a+b>") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a+1>a)\\k<a+1>") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a->a)\\k<a->") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a-b>a)\\k<a-b>") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a-1>a)\\k<a-1>") }.should raise_error(RegexpError) - - -> { Regexp.new("(?<a+>a)(?(<a+>)a|b)") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a+b>a)(?(<a+b>)a|b)") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a+1>a)(?(<a+1>)a|b)") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a->a)(?(<a->)a|b)") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a-b>a)(?(<a-b>)a|b)") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a-1>a)(?(<a-1>)a|b)") }.should raise_error(RegexpError) - - -> { Regexp.new("(?<a+>a)(?('a+')a|b)") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a+b>a)(?('a+b')a|b)") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a+1>a)(?('a+1')a|b)") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a->a)(?('a-')a|b)") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a-b>a)(?('a-b')a|b)") }.should raise_error(RegexpError) - -> { Regexp.new("(?<a-1>a)(?('a-1')a|b)") }.should raise_error(RegexpError) + -> { Regexp.new("(?<a+>a)\\k<a+>") }.should.raise(RegexpError) + -> { Regexp.new("(?<a+b>a)\\k<a+b>") }.should.raise(RegexpError) + -> { Regexp.new("(?<a+1>a)\\k<a+1>") }.should.raise(RegexpError) + -> { Regexp.new("(?<a->a)\\k<a->") }.should.raise(RegexpError) + -> { Regexp.new("(?<a-b>a)\\k<a-b>") }.should.raise(RegexpError) + -> { Regexp.new("(?<a-1>a)\\k<a-1>") }.should.raise(RegexpError) + + -> { Regexp.new("(?<a+>a)(?(<a+>)a|b)") }.should.raise(RegexpError) + -> { Regexp.new("(?<a+b>a)(?(<a+b>)a|b)") }.should.raise(RegexpError) + -> { Regexp.new("(?<a+1>a)(?(<a+1>)a|b)") }.should.raise(RegexpError) + -> { Regexp.new("(?<a->a)(?(<a->)a|b)") }.should.raise(RegexpError) + -> { Regexp.new("(?<a-b>a)(?(<a-b>)a|b)") }.should.raise(RegexpError) + -> { Regexp.new("(?<a-1>a)(?(<a-1>)a|b)") }.should.raise(RegexpError) + + -> { Regexp.new("(?<a+>a)(?('a+')a|b)") }.should.raise(RegexpError) + -> { Regexp.new("(?<a+b>a)(?('a+b')a|b)") }.should.raise(RegexpError) + -> { Regexp.new("(?<a+1>a)(?('a+1')a|b)") }.should.raise(RegexpError) + -> { Regexp.new("(?<a->a)(?('a-')a|b)") }.should.raise(RegexpError) + -> { Regexp.new("(?<a-b>a)(?('a-b')a|b)") }.should.raise(RegexpError) + -> { Regexp.new("(?<a-1>a)(?('a-1')a|b)") }.should.raise(RegexpError) end end |