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-rw-r--r--test/ruby/test_array.rb22
1 files changed, 22 insertions, 0 deletions
diff --git a/test/ruby/test_array.rb b/test/ruby/test_array.rb
index 0d88f26dc0..4d2b05304b 100644
--- a/test/ruby/test_array.rb
+++ b/test/ruby/test_array.rb
@@ -1177,4 +1177,26 @@ class TestArray < Test::Unit::TestCase
assert_equal(@cls[1,2], @cls[1, 2] | @cls[1, 2])
end
+# def test_permutation
+# assert_equal(@cls[], @cls[1,2,3].permutation(0).to_a)
+# assert_equal(@cls[[1],[2],[3]], @cls[1,2,3].permutation(1).to_a)
+# assert_equal(@cls[[1,2],[1,3],[2,1],[2,3],[3,1],[3,2]], @cls[1,2,3].permutation(2).to_a)
+# assert_equal(@cls[[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]], @cls[1,2,3].permutation(3).to_a)
+# assert_equal(@cls[], @cls[1,2,3].permutation(4).to_a)
+# end
+
+ def test_combination
+ assert_equal(@cls[], @cls[1,2,3,4].combination(0).to_a)
+ assert_equal(@cls[[1],[2],[3],[4]], @cls[1,2,3,4].combination(1).to_a)
+ assert_equal(@cls[[1,2],[1,3],[1,4],[2,3],[2,4],[3,4]], @cls[1,2,3,4].combination(2).to_a)
+ assert_equal(@cls[[1,2,3],[1,2,4],[1,3,4],[2,3,4]], @cls[1,2,3,4].combination(3).to_a)
+ assert_equal(@cls[[1,2,3,4]], @cls[1,2,3,4].combination(4).to_a)
+ assert_equal(@cls[], @cls[1,2,3,4].combination(5).to_a)
+ end
+
+ def test_product
+ assert_equal(@cls[[1,4],[1,5],[2,4],[2,5],[3,4],[3,5]],
+ @cls[1,2,3].product([4,5]))
+ assert_equal(@cls[[1,1],[1,2],[2,1],[2,2]], @cls[1,2].product([1,2]))
+ end
end