Guard ruby/spec with spec/mspec/tool/wrap_with_guard.rb

Merged: https://github.com/ruby/ruby/pull/4530

spec/ruby/library/matrix/vector/each2_spec.rb

@@ -1,49 +1,52 @@
 require_relative '../../../spec_helper'
-require 'matrix'
 
-describe "Vector.each2" do
-  before :all do
-    @v = Vector[1, 2, 3]
-    @v2 = Vector[4, 5, 6]
-  end
+ruby_version_is ""..."3.1" do
+  require 'matrix'
 
-  it "requires one argument" do
-    -> { @v.each2(@v2, @v2){} }.should raise_error(ArgumentError)
-    -> { @v.each2(){} }.should raise_error(ArgumentError)
-  end
-
-  describe "given one argument" do
-    it "accepts an Array argument" do
-      a = []
-      @v.each2([7, 8, 9]){|x, y| a << x << y}
-      a.should == [1, 7, 2, 8, 3, 9]
+  describe "Vector.each2" do
+    before :all do
+      @v = Vector[1, 2, 3]
+      @v2 = Vector[4, 5, 6]
     end
 
-    it "raises a DimensionMismatch error if the Vector size is different" do
-      -> { @v.each2(Vector[1,2]){}     }.should raise_error(Vector::ErrDimensionMismatch)
-      -> { @v.each2(Vector[1,2,3,4]){} }.should raise_error(Vector::ErrDimensionMismatch)
+    it "requires one argument" do
+      -> { @v.each2(@v2, @v2){} }.should raise_error(ArgumentError)
+      -> { @v.each2(){} }.should raise_error(ArgumentError)
     end
 
-    it "yields arguments in sequence" do
-      a = []
-      @v.each2(@v2){|first, second| a << [first, second]}
-      a.should == [[1, 4], [2, 5], [3, 6]]
-    end
+    describe "given one argument" do
+      it "accepts an Array argument" do
+        a = []
+        @v.each2([7, 8, 9]){|x, y| a << x << y}
+        a.should == [1, 7, 2, 8, 3, 9]
+      end
 
-    it "yield arguments in pairs" do
-      a = []
-      @v.each2(@v2){|*pair| a << pair}
-      a.should == [[1, 4], [2, 5], [3, 6]]
-    end
+      it "raises a DimensionMismatch error if the Vector size is different" do
+        -> { @v.each2(Vector[1,2]){}     }.should raise_error(Vector::ErrDimensionMismatch)
+        -> { @v.each2(Vector[1,2,3,4]){} }.should raise_error(Vector::ErrDimensionMismatch)
+      end
 
-    it "returns self when given a block" do
-      @v.each2(@v2){}.should equal(@v)
-    end
+      it "yields arguments in sequence" do
+        a = []
+        @v.each2(@v2){|first, second| a << [first, second]}
+        a.should == [[1, 4], [2, 5], [3, 6]]
+      end
 
-    it "returns an enumerator if no block given" do
-      enum = @v.each2(@v2)
-      enum.should be_an_instance_of(Enumerator)
-      enum.to_a.should == [[1, 4], [2, 5], [3, 6]]
+      it "yield arguments in pairs" do
+        a = []
+        @v.each2(@v2){|*pair| a << pair}
+        a.should == [[1, 4], [2, 5], [3, 6]]
+      end
+
+      it "returns self when given a block" do
+        @v.each2(@v2){}.should equal(@v)
+      end
+
+      it "returns an enumerator if no block given" do
+        enum = @v.each2(@v2)
+        enum.should be_an_instance_of(Enumerator)
+        enum.to_a.should == [[1, 4], [2, 5], [3, 6]]
+      end
     end
   end
 end