clean up 1.9 test warnings

Author: quix

test/linalg-test.rb

@@ -40,6 +40,18 @@ def assert_close(a, b)
          a.within(EPSILON, b)
       }
    end
+
+   if RUBY_VERSION >= '1.9.0'
+      def assert_nothing_raised
+         begin
+            yield
+         rescue => e
+            assert_block("raised in assert_nothing_raised: #{e.inspect}") {
+               false
+            }
+         end
+      end
+   end
 end
 
 $mat_f = DMatrix.rows [

test/tc_eigensystem.rb

@@ -67,8 +67,8 @@ def test_eigensystem
             end
 
             eigs_c = DMatrix.new(2*dim, 2*dim)
-            eigs_list.each_with_index { |c, j|
-               eigs_c.replace_minor(0, 2*j, c)
+            eigs_list.each_with_index { |c, jj|
+               eigs_c.replace_minor(0, 2*jj, c)
             }
 
             assert_close(a_c*eigs_c, eigs_c*lambda_c)

test/tc_nullspace.rb

@@ -37,7 +37,7 @@ def test_typical
                end
                a.replace_column(c0, a.column(c1))
                ns2 = a.nullspace(EPSILON)
-               assert_not_nil(ns2)
+               refute_nil(ns2)
                assert_equal(ns2.hsize, 1)
                assert_equal(a.hsize, a.rank + a.nullity)
             end

test/tc_scalars.rb

@@ -59,7 +59,7 @@ def test_scalars
          u = DMatrix.rand(t.vsize, 1)
          v = t.dot(u)
          w = 0.0 
-         t.each_index { |i, j| w += t[i]*u[i] }
+         t.each_index { |ii, jj| w += t[ii]*u[ii] }
          assert_close(v, w)
       }
    end