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module ReferenceValueMapBehavior
def test_keeps_entries_with_strong_references
Ref::Mock.use do
hash = map_class.new
value_1 = "value 1"
value_2 = "value 2"
hash["key 1"] = value_1
hash["key 2"] = value_2
assert_equal value_1, hash["key 1"]
assert_equal value_2, hash["key 2"]
end
end
def test_removes_entries_that_have_been_garbage_collected
Ref::Mock.use do
hash = map_class.new
value_1 = "value 1"
value_2 = "value 2"
hash["key 1"] = value_1
hash["key 2"] = value_2
assert_equal "value 2", hash["key 2"]
assert_equal "value 1", hash["key 1"]
Ref::Mock.gc(value_2)
assert_nil hash["key 2"]
assert_equal value_1, hash["key 1"]
end
end
def test_can_clear_the_map
Ref::Mock.use do
hash = map_class.new
value_1 = "value 1"
value_2 = "value 2"
hash["key 1"] = value_1
hash["key 2"] = value_2
hash.clear
assert_nil hash["key 1"]
assert_nil hash["key 2"]
end
end
def test_can_delete_entries
Ref::Mock.use do
hash = map_class.new
value_1 = "value 1"
value_2 = "value 2"
hash["key 1"] = value_1
hash["key 2"] = value_2
Ref::Mock.gc(value_2)
assert_nil hash.delete("key 2")
assert_equal value_1, hash.delete("key 1")
assert_nil hash["key 1"]
end
end
def test_can_merge_in_another_hash
Ref::Mock.use do
hash = map_class.new
value_1 = "value 1"
value_2 = "value 2"
value_3 = "value 3"
hash["key 1"] = value_1
hash["key 2"] = value_2
hash.merge!("key 3" => value_3)
assert_equal "value 2", hash["key 2"]
assert_equal value_1, hash["key 1"]
Ref::Mock.gc(value_2)
assert_nil hash["key 2"]
assert_equal value_1, hash["key 1"]
assert_equal value_3, hash["key 3"]
end
end
def test_can_get_all_values
Ref::Mock.use do
hash = map_class.new
value_1 = "value 1"
value_2 = "value 2"
value_3 = "value 3"
hash["key 1"] = value_1
hash["key 2"] = value_2
hash["key 3"] = value_3
assert_equal ["value 1", "value 2", "value 3"].sort, hash.values.sort
Ref::Mock.gc(value_2)
assert_equal ["value 1", "value 3"].sort, hash.values.sort
end
end
def test_can_turn_into_an_array
Ref::Mock.use do
hash = map_class.new
value_1 = "value 1"
value_2 = "value 2"
value_3 = "value 3"
hash["key 1"] = value_1
hash["key 2"] = value_2
hash["key 3"] = value_3
order = lambda{|a,b| a.first <=> b.first}
assert_equal [["key 1", "value 1"], ["key 2", "value 2"], ["key 3", "value 3"]].sort(&order), hash.to_a.sort(&order)
Ref::Mock.gc(value_2)
assert_equal [["key 1", "value 1"], ["key 3", "value 3"]].sort(&order), hash.to_a.sort(&order)
end
end
def test_can_iterate_over_all_entries
Ref::Mock.use do
hash = map_class.new
value_1 = "value 1"
value_2 = "value 2"
value_3 = "value 3"
hash["key 1"] = value_1
hash["key 2"] = value_2
hash["key 3"] = value_3
keys = []
values = []
hash.each{|k,v| keys << k; values << v}
assert_equal ["key 1", "key 2", "key 3"], keys.sort
assert_equal ["value 1", "value 2", "value 3"], values.sort
Ref::Mock.gc(value_2)
keys = []
values = []
hash.each{|k,v| keys << k; values << v}
assert_equal ["key 1", "key 3"], keys.sort
assert_equal ["value 1", "value 3"], values.sort
end
end
def test_inspect
Ref::Mock.use do
hash = map_class.new
hash["key 1"] = "value 1"
assert hash.inspect
end
end
end
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