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add test cases for negative position in Array#from

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kuldeepaggarwal committed May 23, 2014
1 parent 0cc7f02 commit 3920d64479c8763e1f0a64db872e5f072268cda9
@@ -5,6 +5,8 @@ class Array
# %w( a b c d ).from(2) # => ["c", "d"]
# %w( a b c d ).from(10) # => []
# %w().from(0) # => []
+ # %w( a b c d ).from(-2) # => ["c", "d"]
+ # %w( a b c ).from(-10) # => []
def from(position)
self[position, length] || []
end
@@ -10,6 +10,8 @@ def test_from
assert_equal %w( a b c d ), %w( a b c d ).from(0)
assert_equal %w( c d ), %w( a b c d ).from(2)
assert_equal %w(), %w( a b c d ).from(10)
+ assert_equal %w( d e ), %w( a b c d e ).from(-2)
+ assert_equal %w(), %w( a b c d e ).from(-10)
end
def test_to

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