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

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

spec/ruby/library/matrix/row_spec.rb

@@ -1,36 +1,39 @@
 require_relative '../../spec_helper'
-require 'matrix'
 
-describe "Matrix#row" do
-  before :all do
-    @m = Matrix[ [1, 2], [2, 3], [3, 4] ]
-  end
+ruby_version_is ""..."3.1" do
+  require 'matrix'
 
-  it "returns a Vector when called without a block" do
-    @m.row(0).should == Vector[1,2]
-  end
+  describe "Matrix#row" do
+    before :all do
+      @m = Matrix[ [1, 2], [2, 3], [3, 4] ]
+    end
 
-  it "yields the elements of the row when called with a block" do
-    a = []
-    @m.row(0) {|x| a << x}
-    a.should == [1,2]
-  end
+    it "returns a Vector when called without a block" do
+      @m.row(0).should == Vector[1,2]
+    end
 
-  it "counts backwards for negative argument" do
-    @m.row(-1).should == Vector[3, 4]
-  end
+    it "yields the elements of the row when called with a block" do
+      a = []
+      @m.row(0) {|x| a << x}
+      a.should == [1,2]
+    end
 
-  it "returns self when called with a block" do
-    @m.row(0) { |x| x }.should equal(@m)
-  end
+    it "counts backwards for negative argument" do
+      @m.row(-1).should == Vector[3, 4]
+    end
 
-  it "returns nil when out of bounds" do
-    @m.row(3).should == nil
-    @m.row(-4).should == nil
-  end
+    it "returns self when called with a block" do
+      @m.row(0) { |x| x }.should equal(@m)
+    end
 
-  it "never yields when out of bounds" do
-    -> { @m.row(3){ raise } }.should_not raise_error
-    -> { @m.row(-4){ raise } }.should_not raise_error
+    it "returns nil when out of bounds" do
+      @m.row(3).should == nil
+      @m.row(-4).should == nil
+    end
+
+    it "never yields when out of bounds" do
+      -> { @m.row(3){ raise } }.should_not raise_error
+      -> { @m.row(-4){ raise } }.should_not raise_error
+    end
   end
 end