1 files changed, 43 insertions, 0 deletions
diff --git a/test/matrix/test_matrix.rb b/test/matrix/test_matrix.rb
new file mode 100644
index 0000000000..9e132efa5e
--- /dev/null
+++ b/test/matrix/test_matrix.rb
@@ -0,0 +1,43 @@
+require 'test/unit'
+require 'matrix'
+
+class TestMatrix < Test::Unit::TestCase
+  def setup
+    @m1 = Matrix[[1,2,3], [4,5,6]]
+    @m2 = Matrix[[1,2,3], [4,5,6]]
+    @m3 = @m1.clone
+    @m4 = Matrix[[1,0, 2.0, 3.0], [4.0, 5.0, 6.0]]
+    @n1 = Matrix[[2,3,4], [5,6,7]]
+  end
+
+  def test_identity
+    assert_same @m1, @m1
+    assert_not_same @m1, @m2
+    assert_not_same @m1, @m3
+    assert_not_same @m1, @m4
+    assert_not_same @m1, @n1
+  end
+
+  def test_equality
+    assert_equal @m1, @m1
+    assert_equal @m1, @m2
+    assert_equal @m1, @m3
+    assert_not_equal @m1, @m4
+    assert_not_equal @m1, @n1
+  end
+
+  def test_hash_equality
+    assert @m1.eql?(@m1)
+    assert @m1.eql?(@m2)
+    assert @m1.eql?(@m3)
+    assert !@m1.eql?(@m4)
+    assert !@m1.eql?(@n1)
+
+    hash = { @m1 => :value }
+    assert hash.key?(@m1)
+    assert hash.key?(@m2)
+    assert hash.key?(@m3)
+    assert !hash.key?(@m4)
+    assert !hash.key?(@n1)
+  end
+end