1 files changed, 18 insertions, 0 deletions

diff --git a/spec/ruby/library/matrix/shared/rectangular.rb b/spec/ruby/library/matrix/shared/rectangular.rb
new file mode 100644
index 0000000000..0229e614c6
--- /dev/null
+++ b/spec/ruby/library/matrix/shared/rectangular.rb
@@ -0,0 +1,18 @@
+require_relative '../fixtures/classes'
+require 'matrix'
+
+describe :matrix_rectangular, shared: true do
+  it "returns [receiver.real, receiver.imag]" do
+    m = Matrix[ [1.2, Complex(1,2)], [Complex(-2,0.42), 4] ]
+    m.send(@method).should == [m.real, m.imag]
+
+    m = Matrix.empty(3, 0)
+    m.send(@method).should == [m.real, m.imag]
+  end
+
+  describe "for a subclass of Matrix" do
+    it "returns instances of that subclass" do
+      MatrixSub.ins.send(@method).each{|m| m.should.instance_of?(MatrixSub) }
+    end
+  end
+end