test/unit/enumerable/test_combination.rb in facets-2.0.2 vs test/unit/enumerable/test_combination.rb in facets-2.0.3

@@ -1,49 +1,55 @@
-  #  _____         _
-  # |_   _|__  ___| |_
-  #   | |/ _ \/ __| __|
-  #   | |  __/\__ \ |
-  #   |_|\___||___/\__|
-  #
-  # for lib/facets/enumerable/combination.rb
-  #
-  # Extracted Mon Sep 03 16:23:07 -0700 2007
-  # w/ Test Extraction Ratchet
-  #
+#  _____         _
+# |_   _|__  ___| |_
+#   | |/ _ \/ __| __|
+#   | |  __/\__ \ |
+#   |_|\___||___/\__|
+#
+# for lib/facets/enumerable/combination.rb
 
- require 'facets/enumerable/combination.rb'
+require 'facets/enumerable/combination.rb'
+require 'test/unit'
+require 'set'
 
+class TestEnumerableCombination < Test::Unit::TestCase
 
+  def test_combinations
+    a = [1,2]
+    b = [3,4]
+    z = Enumerable.combinations(a,b)
+    r = [[1,3],[1,4],[2,3],[2,4]]
+    assert_equal( r, z )
+  end
 
-  require 'test/unit'
-  require 'set'
+  def test_combinations_of_three
+    a = %w|a b|
+    b = %w|a x|
+    c = %w|x y|
+    z = Enumerable.combinations(a, b, c)
+    r = [ ["a", "a", "x"],
+          ["a", "a", "y"],
+          ["a", "x", "x"],
+          ["a", "x", "y"],
+          ["b", "a", "x"],
+          ["b", "a", "y"],
+          ["b", "x", "x"],
+          ["b", "x", "y"] ]
+    assert_equal( r, z )
+  end
 
-  class TestEnumerableCombination < Test::Unit::TestCase
-
-    def test_combinations_01
-      a = [1,2]
-      b = [3,4]
-      z = Enumerable.combinations(a,b)
-      r = [[1,3],[1,4],[2,3],[2,4]]
-      assert_equal( r, z )
-    end
-
-    def test_combinations_02
-      a = %w|a b|
-      b = %w|a x|
-      c = %w|x y|
-      z = Enumerable.combinations(a, b, c)
-      r = [ ["a", "a", "x"],
-            ["a", "a", "y"],
-            ["a", "x", "x"],
-            ["a", "x", "y"],
-            ["b", "a", "x"],
-            ["b", "a", "y"],
-            ["b", "x", "x"],
-            ["b", "x", "y"] ]
-      assert_equal( r, z )
-    end
-
+  def test_each_combination
+    r = []
+    a = [1,2,3,4]
+    a.each_combination(2){ |a,b| r << [a,b] }
+    assert_equal( [[1,2],[1,3],[1,4],[2,3],[2,4],[3,4]], r )
   end
 
+#   DEPRECATED
+#   def test_each_unique_pair
+#     r = []
+#     a = [1,2,3,4]
+#     a.each_unique_pair{ |a,b| r << [a,b] }
+#     assert_equal( [[1,2],[1,3],[1,4],[2,3],[2,4],[3,4]], r )
+#   end
 
+end