Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/string/match_spec.rb

@@ -0,0 +1,175 @@
+# -*- encoding: utf-8 -*-
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes.rb', __FILE__)
+
+describe :string_match_escaped_literal, shared: true do
+  not_supported_on :opal do
+    it "matches a literal Regexp that uses ASCII-only UTF-8 escape sequences" do
+      "a b".match(/([\u{20}-\u{7e}])/)[0].should == "a"
+    end
+  end
+end
+
+describe "String#=~" do
+  it "behaves the same way as index() when given a regexp" do
+    ("rudder" =~ /udder/).should == "rudder".index(/udder/)
+    ("boat" =~ /[^fl]oat/).should == "boat".index(/[^fl]oat/)
+    ("bean" =~ /bag/).should == "bean".index(/bag/)
+    ("true" =~ /false/).should == "true".index(/false/)
+  end
+
+  it "raises a TypeError if a obj is a string" do
+    lambda { "some string" =~ "another string" }.should raise_error(TypeError)
+    lambda { "a" =~ StringSpecs::MyString.new("b")          }.should raise_error(TypeError)
+  end
+
+  it "invokes obj.=~ with self if obj is neither a string nor regexp" do
+    str = "w00t"
+    obj = mock('x')
+
+    obj.should_receive(:=~).with(str).any_number_of_times.and_return(true)
+    str.should =~ obj
+
+    obj = mock('y')
+    obj.should_receive(:=~).with(str).any_number_of_times.and_return(false)
+    str.should_not =~ obj
+  end
+
+  it "sets $~ to MatchData when there is a match and nil when there's none" do
+    'hello' =~ /./
+    $~[0].should == 'h'
+
+    'hello' =~ /not/
+    $~.should == nil
+  end
+
+  with_feature :encoding do
+    it "returns the character index of a found match" do
+      ("こにちわ" =~ /に/).should == 1
+    end
+  end
+
+end
+
+describe "String#match" do
+  it "matches the pattern against self" do
+    'hello'.match(/(.)\1/)[0].should == 'll'
+  end
+
+  it_behaves_like :string_match_escaped_literal, :match
+
+  describe "with [pattern, position]" do
+    describe "when given a positive position" do
+      it "matches the pattern against self starting at an optional index" do
+        "01234".match(/(.).(.)/, 1).captures.should == ["1", "3"]
+      end
+
+      with_feature :encoding do
+        it "uses the start as a character offset" do
+          "零一二三四".match(/(.).(.)/, 1).captures.should == ["一", "三"]
+        end
+      end
+    end
+
+    describe "when given a negative position" do
+      it "matches the pattern against self starting at an optional index" do
+        "01234".match(/(.).(.)/, -4).captures.should == ["1", "3"]
+      end
+
+      with_feature :encoding do
+        it "uses the start as a character offset" do
+          "零一二三四".match(/(.).(.)/, -4).captures.should == ["一", "三"]
+        end
+      end
+    end
+  end
+
+  describe "when passed a block" do
+    it "yields the MatchData" do
+      "abc".match(/./) {|m| ScratchPad.record m }
+      ScratchPad.recorded.should be_kind_of(MatchData)
+    end
+
+    it "returns the block result" do
+      "abc".match(/./) { :result }.should == :result
+    end
+
+    it "does not yield if there is no match" do
+      ScratchPad.record []
+      "b".match(/a/) {|m| ScratchPad << m }
+      ScratchPad.recorded.should == []
+    end
+  end
+
+  it "tries to convert pattern to a string via to_str" do
+    obj = mock('.')
+    def obj.to_str() "." end
+    "hello".match(obj)[0].should == "h"
+
+    obj = mock('.')
+    def obj.respond_to?(type, *) true end
+    def obj.method_missing(*args) "." end
+    "hello".match(obj)[0].should == "h"
+  end
+
+  it "raises a TypeError if pattern is not a regexp or a string" do
+    lambda { 'hello'.match(10)   }.should raise_error(TypeError)
+    not_supported_on :opal do
+      lambda { 'hello'.match(:ell) }.should raise_error(TypeError)
+    end
+  end
+
+  it "converts string patterns to regexps without escaping" do
+    'hello'.match('(.)\1')[0].should == 'll'
+  end
+
+  it "returns nil if there's no match" do
+    'hello'.match('xx').should == nil
+  end
+
+  it "matches \\G at the start of the string" do
+    'hello'.match(/\Gh/)[0].should == 'h'
+    'hello'.match(/\Go/).should == nil
+  end
+
+  it "sets $~ to MatchData of match or nil when there is none" do
+    'hello'.match(/./)
+    $~[0].should == 'h'
+    Regexp.last_match[0].should == 'h'
+
+    'hello'.match(/X/)
+    $~.should == nil
+    Regexp.last_match.should == nil
+  end
+
+  it "calls match on the regular expression" do
+    regexp = /./
+    regexp.should_receive(:match).and_return(:foo)
+    'hello'.match(regexp).should == :foo
+  end
+end
+
+ruby_version_is "2.4" do
+  describe "String#match?" do
+    before :each do
+      # Resetting Regexp.last_match
+      /DONTMATCH/.match ''
+    end
+
+    context "when matches the given regex" do
+      it "returns true but does not set Regexp.last_match" do
+        'string'.match?(/string/i).should be_true
+        Regexp.last_match.should be_nil
+      end
+    end
+
+    it "returns false when does not match the given regex" do
+      'string'.match?(/STRING/).should be_false
+    end
+
+    it "takes matching position as the 2nd argument" do
+      'string'.match?(/str/i, 0).should be_true
+      'string'.match?(/str/i, 1).should be_false
+    end
+  end
+end