1 files changed, 41 insertions, 0 deletions
diff --git a/spec/ruby/library/matrix/rows_spec.rb b/spec/ruby/library/matrix/rows_spec.rb
new file mode 100644
index 0000000000..9c248cd8a4
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+++ b/spec/ruby/library/matrix/rows_spec.rb
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+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require 'matrix'
+
+describe "Matrix.rows" do
+  before :each do
+    @a = [1, 2]
+    @b = [3, 4]
+    @m = Matrix.rows([@a, @b])
+  end
+
+  it "returns a Matrix" do
+    @m.should.is_a?(Matrix)
+  end
+
+  it "creates a matrix from argument rows" do
+    @m.row(0).to_a.should == @a
+    @m.row(1).to_a.should == @b
+  end
+
+  it "copies the original rows by default" do
+    @a << 3
+    @b << 6
+    @m.row(0).should_not.equal?(@a)
+    @m.row(1).should_not.equal?(@b)
+  end
+
+  it "references the original rows if copy is false" do
+    @m_ref = Matrix.rows([@a, @b], false)
+    @a << 3
+    @b << 6
+    @m_ref.row(0).to_a.should == @a
+    @m_ref.row(1).to_a.should == @b
+  end
+
+  describe "for a subclass of Matrix" do
+    it "returns an instance of that subclass" do
+      MatrixSub.rows([[0, 1], [0, 1]]).should.instance_of?(MatrixSub)
+    end
+  end
+end