1 files changed, 89 insertions, 0 deletions
diff --git a/spec/ruby/language/match_spec.rb b/spec/ruby/language/match_spec.rb
new file mode 100644
index 0000000000..096ebee022
--- /dev/null
+++ b/spec/ruby/language/match_spec.rb
@@ -0,0 +1,89 @@
+require_relative '../spec_helper'
+require_relative 'fixtures/match_operators'
+
+describe "The !~ operator" do
+  before :each do
+    @obj = OperatorImplementor.new
+  end
+
+  it "evaluates as a call to !~" do
+    expected = "hello world"
+
+    opval = (@obj !~ expected)
+    methodval = @obj.send(:"!~", expected)
+
+    opval.should == expected
+    methodval.should == expected
+  end
+end
+
+describe "The =~ operator" do
+  before :each do
+    @impl = OperatorImplementor.new
+  end
+
+  it "calls the =~ method" do
+    expected = "hello world"
+
+    opval = (@obj =~ expected)
+    methodval = @obj.send(:"=~", expected)
+
+    opval.should == expected
+    methodval.should == expected
+  end
+end
+
+describe "The =~ operator with named captures" do
+  before :each do
+    @regexp = /(?<matched>foo)(?<unmatched>bar)?/
+    @string = "foofoo"
+  end
+
+  describe "on syntax of /regexp/ =~ string_variable" do
+    it "sets local variables by the captured pairs" do
+      /(?<matched>foo)(?<unmatched>bar)?/ =~ @string
+      local_variables.should == [:matched, :unmatched]
+      matched.should == "foo"
+      unmatched.should == nil
+    end
+
+    it "sets existing local variables if declared in a higher scope" do
+      a = 42
+      1.times do
+        /(?<a>foo)/ =~ @string
+      end
+      a.should == "foo"
+    end
+  end
+
+  describe "on syntax of 'string_literal' =~ /regexp/" do
+    it "does not set local variables" do
+      'string literal' =~ /(?<matched>str)(?<unmatched>lit)?/
+      local_variables.should == []
+    end
+  end
+
+  describe "on syntax of string_variable =~ /regexp/" do
+    it "does not set local variables" do
+      @string =~ /(?<matched>foo)(?<unmatched>bar)?/
+      local_variables.should == []
+    end
+  end
+
+  describe "on syntax of regexp_variable =~ string_variable" do
+    it "does not set local variables" do
+      @regexp =~ @string
+      local_variables.should == []
+    end
+  end
+
+  describe "on the method calling" do
+    it "does not set local variables" do
+      @regexp.=~(@string)
+      local_variables.should == []
+
+      @regexp.send :=~, @string
+      local_variables.should == []
+    end
+  end
+end