1 files changed, 20 insertions, 0 deletions
diff --git a/spec/ruby/library/matrix/eigenvalue_decomposition/eigenvector_matrix_spec.rb b/spec/ruby/library/matrix/eigenvalue_decomposition/eigenvector_matrix_spec.rb
new file mode 100644
index 0000000000..709ec68d0c
--- /dev/null
+++ b/spec/ruby/library/matrix/eigenvalue_decomposition/eigenvector_matrix_spec.rb
@@ -0,0 +1,20 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require 'matrix'
+
+describe "Matrix::EigenvalueDecomposition#eigenvector_matrix" do
+  it "returns a complex eigenvector matrix given a rotation matrix" do
+    # Fix me: should test for linearity, not for equality
+    Matrix[[ 1, 1],
+           [-1, 1]].eigensystem.eigenvector_matrix.should ==
+    Matrix[[1, 1],
+           [Complex(0, 1), Complex(0, -1)]]
+  end
+
+  it "returns an real eigenvector matrix for a symetric matrix" do
+    # Fix me: should test for linearity, not for equality
+    Matrix[[1, 2],
+           [2, 1]].eigensystem.eigenvector_matrix.should ==
+    Matrix[[0.7071067811865475, 0.7071067811865475],
+           [-0.7071067811865475, 0.7071067811865475]]
+  end
+end