特定のオブジェクト フィールドの有無を処理する API をテストしようとしているとします。
次のようなテストがあるとしましょう:
(def without-foo
{:bar "17"})
(def base-request
{:foo "12"
:bar "17"})
(def without-bar
{:foo "12"})
(def response
{:foo "12"
:bar "17"
:name "Bob"})
(def response-without-bar
{:foo "12"
:bar ""
:name "Bob"})
(def response-without-foo
{:bar "17"
:foo ""
:name "Bob"})
(facts "blah"
(against-background [(external-api-call anything) => {:name => "Bob"})
(fact "base"
(method-under-test base-request) => response)
(fact "without-foo"
(method-under-test without-foo) => response-without-foo)
(fact "without-bar"
(method-under-test without-bar) => response-without-bar))
これは期待どおりに機能し、テストに合格します。今、私は次のように表形式を使用してこれをリファクタリングしようとしています:
(def request
{:foo "12"
:bar "17"})
(def response
{:foo "12"
:bar "17"
:name "Bob"})
(tabular
(against-background [(external-api-call anything) => {:name "Bob"})]
(fact
(method-under-test (merge request ?diff) => (merge response ?rdiff))
?diff ?rdiff ?description
{:foo nil} {:foo ""} "without foo"
{} {} "base case"
{:bar nil} {bar ""} "without bar")
結果は次のとおりです。
FAIL at (test.clj:123)
Midje could not understand something you wrote:
It looks like the table has no headings, or perhaps you
tried to use a non-literal string for the doc-string?
最終的に私は次のようになりました:
(tabular
(fact
(method-under-test (merge request ?diff) => (merge response ?rdiff) (provided(external-api-call anything) => {:name "Bob"}))
?diff ?rdiff ?description
{:foo nil} {:foo ""} "without foo"
{} {} "base case"
{:bar nil} {bar ""} "without bar")
どちらが合格します。私の質問はです。tabular
関数と関数の違いは何ですか? また、一方がfacts
を受け入れ、against-background
もう一方が爆発するのはなぜですか?