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Extract ActiveSupport::TypedArray class to ensure an array is all of …
…the same type [#673 state:resolved]
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,31 @@ | ||
module ActiveSupport | ||
class TypedArray < Array | ||
def self.type_cast(obj) | ||
obj | ||
end | ||
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def initialize(*args) | ||
super(*args).map! { |obj| self.class.type_cast(obj) } | ||
end | ||
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def <<(obj) | ||
super(self.class.type_cast(obj)) | ||
end | ||
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def concat(array) | ||
super(array.map! { |obj| self.class.type_cast(obj) }) | ||
end | ||
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def insert(index, obj) | ||
super(index, self.class.type_cast(obj)) | ||
end | ||
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def push(*objs) | ||
super(*objs.map { |obj| self.class.type_cast(obj) }) | ||
end | ||
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def unshift(*objs) | ||
super(*objs.map { |obj| self.class.type_cast(obj) }) | ||
end | ||
end | ||
end |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,51 @@ | ||
require 'abstract_unit' | ||
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class TypedArrayTest < Test::Unit::TestCase | ||
class StringArray < ActiveSupport::TypedArray | ||
def self.type_cast(obj) | ||
obj.to_s | ||
end | ||
end | ||
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def setup | ||
@array = StringArray.new | ||
end | ||
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def test_string_array_initialize | ||
assert_equal ["1", "2", "3"], StringArray.new([1, "2", :"3"]) | ||
end | ||
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def test_string_array_append | ||
@array << 1 | ||
@array << "2" | ||
@array << :"3" | ||
assert_equal ["1", "2", "3"], @array | ||
end | ||
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def test_string_array_concat | ||
@array.concat([1, "2"]) | ||
@array.concat([:"3"]) | ||
assert_equal ["1", "2", "3"], @array | ||
end | ||
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def test_string_array_insert | ||
@array.insert(0, 1) | ||
@array.insert(1, "2") | ||
@array.insert(2, :"3") | ||
assert_equal ["1", "2", "3"], @array | ||
end | ||
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def test_string_array_push | ||
@array.push(1) | ||
@array.push("2") | ||
@array.push(:"3") | ||
assert_equal ["1", "2", "3"], @array | ||
end | ||
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def test_string_array_unshift | ||
@array.unshift(:"3") | ||
@array.unshift("2") | ||
@array.unshift(1) | ||
assert_equal ["1", "2", "3"], @array | ||
end | ||
end |