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執行個體公開方法

assert_deprecated(deprecator, &block)
assert_deprecated(match, deprecator, &block)

宣告在執行讓與區塊期間，給定的 deprecator 釋出相符的過時警告。

assert_deprecated(/foo/, CustomDeprecator) do
  CustomDeprecator.warn "foo should no longer be used"
end

match 物件可以是出現在訊息中的 Regexp 或 String。

assert_deprecated('foo', CustomDeprecator) do
  CustomDeprecator.warn "foo should no longer be used"
end

如果省略 match（或明確為 nil），任何過時警告都將相符。

assert_deprecated(CustomDeprecator) do
  CustomDeprecator.warn "foo should no longer be used"
end

來源： 顯示 | 在 GitHub 上 

# File activesupport/lib/active_support/testing/deprecation.rb, line 30
def assert_deprecated(match = nil, deprecator = nil, &block)
  match, deprecator = nil, match if match.is_a?(ActiveSupport::Deprecation)
  unless deprecator
    ActiveSupport.deprecator.warn("assert_deprecated without a deprecator is deprecated")
    deprecator = ActiveSupport::Deprecation._instance
  end
  result, warnings = collect_deprecations(deprecator, &block)
  assert !warnings.empty?, "Expected a deprecation warning within the block but received none"
  if match
    match = Regexp.new(Regexp.escape(match)) unless match.is_a?(Regexp)
    assert warnings.any? { |w| match.match?(w) }, "No deprecation warning matched #{match}: #{warnings.join(', ')}"
  end
  result
end

assert_not_deprecated(deprecator = nil, &block)

宣告在執行讓與區塊期間，給定的 deprecator 未釋出任何過時警告。

assert_not_deprecated(CustomDeprecator) do
  CustomDeprecator.warn "message" # fails assertion
end

assert_not_deprecated(ActiveSupport::Deprecation.new) do
  CustomDeprecator.warn "message" # passes assertion, different deprecator
end

來源： 顯示 | 在 GitHub 上 

# File activesupport/lib/active_support/testing/deprecation.rb, line 54
def assert_not_deprecated(deprecator = nil, &block)
  unless deprecator
    ActiveSupport.deprecator.warn("assert_not_deprecated without a deprecator is deprecated")
    deprecator = ActiveSupport::Deprecation._instance
  end
  result, deprecations = collect_deprecations(deprecator, &block)
  assert deprecations.empty?, "Expected no deprecation warning within the block but received #{deprecations.size}: \n  #{deprecations * "\n  "}"
  result
end

collect_deprecations(deprecator = nil)

傳回區塊的傳回值，以及在執行讓與區塊期間，給定的 deprecator 釋出的所有過時警告陣列。

collect_deprecations(CustomDeprecator) do
  CustomDeprecator.warn "message"
  ActiveSupport::Deprecation.new.warn "other message"
  :result
end # => [:result, ["message"]]

來源： 顯示 | 在 GitHub 上 

# File activesupport/lib/active_support/testing/deprecation.rb, line 72
def collect_deprecations(deprecator = nil)
  unless deprecator
    ActiveSupport.deprecator.warn("collect_deprecations without a deprecator is deprecated")
    deprecator = ActiveSupport::Deprecation._instance
  end
  old_behavior = deprecator.behavior
  deprecations = []
  deprecator.behavior = Proc.new do |message, callstack|
    deprecations << message
  end
  result = yield
  [result, deprecations]
ensure
  deprecator.behavior = old_behavior
end