1 files changed, 22 insertions, 0 deletions
diff --git a/spec/ruby/library/matrix/eigenvalue_decomposition/eigenvectors_spec.rb b/spec/ruby/library/matrix/eigenvalue_decomposition/eigenvectors_spec.rb
new file mode 100644
index 0000000000..163bebe709
--- /dev/null
+++ b/spec/ruby/library/matrix/eigenvalue_decomposition/eigenvectors_spec.rb
@@ -0,0 +1,22 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require 'matrix'
+
+describe "Matrix::EigenvalueDecomposition#eigenvectors" do
+  it "returns an array of complex eigenvectors for a rotation matrix" do
+    # Fix me: should test for linearity, not for equality
+    Matrix[[ 1, 1],
+           [-1, 1]].eigensystem.eigenvectors.should ==
+    [ Vector[1, Complex(0, 1)],
+      Vector[1, Complex(0, -1)]
+    ]
+  end
+
+  it "returns an array of real eigenvectors for a symetric matrix" do
+    # Fix me: should test for linearity, not for equality
+    Matrix[[1, 2],
+           [2, 1]].eigensystem.eigenvectors.should ==
+    [ Vector[0.7071067811865475, -0.7071067811865475],
+      Vector[0.7071067811865475, 0.7071067811865475]
+    ]
+  end
+end