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-rw-r--r--test/ruby/test_array.rb21
1 files changed, 21 insertions, 0 deletions
diff --git a/test/ruby/test_array.rb b/test/ruby/test_array.rb
index 1440d00..1b102c4 100644
--- a/test/ruby/test_array.rb
+++ b/test/ruby/test_array.rb
@@ -276,6 +276,27 @@ class TestArray < Test::Unit::TestCase
assert_equal(@cls[1] * 1000, a - @cls[2])
end
+ def test_difference
+ assert_equal(@cls[], @cls[1].difference(@cls[1]))
+ assert_equal(@cls[1], @cls[1, 2, 3, 4, 5].difference(@cls[2, 3, 4, 5]))
+ assert_equal(@cls[1, 1], @cls[1, 2, 1].difference(@cls[2]))
+ assert_equal(@cls[1, 1, 1, 1], @cls[1, 2, 1, 3, 1, 4, 1, 5].difference(@cls[2, 3, 4, 5]))
+ assert_equal(@cls[], @cls[1, 2, 3, 4].difference(@cls[1], @cls[2], @cls[3], @cls[4]))
+ a = [1]
+ assert_equal(@cls[1], a.difference(@cls[2], @cls[2]))
+ assert_equal(@cls[], a.difference(@cls[1]))
+ assert_equal(@cls[1], a)
+ end
+
+ def test_difference_big_array
+ assert_equal(@cls[1]*64, (@cls[1, 2, 3, 4, 5] * 64).difference(@cls[2, 3, 4] * 64, @cls[3, 5] * 64))
+ assert_equal(@cls[1, 1, 1, 1]*64, (@cls[1, 2, 1, 3, 1, 4, 1, 5] * 64).difference(@cls[2, 3, 4, 5] * 64))
+ a = @cls[1] * 1000
+ assert_equal(@cls[1] * 1000, a.difference(@cls[2], @cls[2]))
+ assert_equal(@cls[], a.difference(@cls[1]))
+ assert_equal(@cls[1] * 1000, a)
+ end
+
def test_LSHIFT # '<<'
a = @cls[]
a << 1