node.js - Cucumber JS でエラーのヘッダーのみを表示するにはどうすればよいですか?

Question

もちろん失敗することがわかっているテストの完全な JS 例外スタックを見たくないことを除いて、問題なく動作しています。代わりに、(より便利な) 例外の先頭だけを見たいと思います。些細なことのように思えるかもしれませんが、BDD は、この種のツールからの迅速なフィードバックによって達成されるのが最善であると私は信じています。例として、モジュールから欠落している基本的なメソッドからの完全なスタックトレースを次に示します。

TypeError: Object #<Object> has no method 'delete'
    at World.<anonymous> ($HOME/features/step_definitions/delete-item.steps.js:20:21)
    at Object.invoke ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/support_code/step_definition.js:84:14)
    at Object.execute ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/step.js:157:22)
    at Object.acceptVisitor ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/step.js:149:12)
    at Object.executeStep ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:178:12)
    at Object.processStep ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:173:14)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:66:16
    at callUserFunctionAndBroadcastAfterEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:90:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at broadcastToListeners ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:117:19)
    at onRuntimeListenersComplete ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:113:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:20:11
    at hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener.js:8:9)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/summary_formatter.js:16:7
    at Object.hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener.js:8:9)
    at Object.hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/summary_formatter.js:15:18)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:118:51
    at processItem ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:19:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:12:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at broadcastToListeners ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:117:19)
    at Object.broadcastEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:109:7)
    at Object.broadcastBeforeEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:100:12)
    at Object.broadcastEventAroundUserFunction ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:84:12)
    at Object.visitStep ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:63:12)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/scenario.js:95:17
    at processItem ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:19:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:12:11)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:20:11
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at broadcastToListeners ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:117:19)
    at onRuntimeListenersComplete ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:113:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:20:11
    at hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener.js:8:9)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/summary_formatter.js:16:7
    at Object.hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener.js:8:9)
    at Object.hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/summary_formatter.js:15:18)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:118:51
    at processItem ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:19:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:12:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at broadcastToListeners ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:117:19)
    at Object.broadcastEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:109:7)
    at Object.broadcastAfterEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:105:12)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:95:32
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at broadcastToListeners ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:117:19)
    at onRuntimeListenersComplete ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:113:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:20:11
    at handleStepResult ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/summary_formatter.js:27:5)
    at hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener.js:6:9)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/summary_formatter.js:16:7
    at handleStepResult ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/stats_journal.js:39:5)
    at Object.hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener.js:6:9)
    at Object.hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/summary_formatter.js:15:18)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:118:51
    at processItem ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:19:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:12:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at broadcastToListeners ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:117:19)
    at Object.broadcastEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:109:7)
    at Object.visitStepResult ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:79:12)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/step.js:150:17
    at codeCallback ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/support_code/step_definition.js:61:11)
    at World.<anonymous> ($HOME/features/step_definitions/delete-item.steps.js:16:3)
    at Object.invoke ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/support_code/step_definition.js:84:14)
    at Object.execute ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/step.js:157:22)
    at Object.acceptVisitor ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/step.js:149:12)
    at Object.executeStep ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:178:12)
    at Object.processStep ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:173:14)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:66:16
    at callUserFunctionAndBroadcastAfterEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:90:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at broadcastToListeners ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:117:19)
    at onRuntimeListenersComplete ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:113:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:20:11
    at hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener.js:8:9)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/summary_formatter.js:16:7
    at Object.hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener.js:8:9)
    at Object.hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/summary_formatter.js:15:18)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:118:51
    at processItem ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:19:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:12:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at broadcastToListeners ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:117:19)
    at Object.broadcastEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:109:7)
    at Object.broadcastBeforeEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:100:12)
    at Object.broadcastEventAroundUserFunction ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:84:12)
    at Object.visitStep ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:63:12)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/scenario.js:95:17
    at processItem ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:19:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:12:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at Object.instructVisitorToVisitSteps ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/scenario.js:94:13)
    at Object.instructVisitorToVisitScenarioSteps ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/scenario.js:90:12)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/scenario.js:75:14
    at Object.instructVisitorToVisitBackgroundSteps ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/scenario.js:85:9)
    at Object.acceptVisitor ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/scenario.js:74:12)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:48:41
    at callUserFunction ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/support_code/library/hooker.js:41:11)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at Object.triggerBeforeHooks ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/support_code/library/hooker.js:63:19)
    at callBeforeHooks ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/support_code/library/hooker.js:37:16)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at hookedUpFunction ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/support_code/library/hooker.js:27:21)
    at callUserFunctionAndBroadcastAfterEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:90:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at broadcastToListeners ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:117:19)
    at onRuntimeListenersComplete ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:113:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:14:11)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:20:11
    at hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener.js:8:9)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/summary_formatter.js:16:7
    at handleBeforeScenarioEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/stats_journal.js:24:5)
    at Object.hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener.js:6:9)
    at Object.hear ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/listener/summary_formatter.js:15:18)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:118:51
    at processItem ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:19:9)
    at iterate ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:12:11)
    at Object.forEach ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/type/collection.js:23:7)
    at broadcastToListeners ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:117:19)
    at Object.broadcastEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:109:7)
    at Object.broadcastBeforeEvent ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:100:12)
    at Object.broadcastEventAroundUserFunction ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:84:12)
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/runtime/ast_tree_walker.js:52:14
    at $HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/support_code/library.js:71:11
    at process._tickCallback (node.js:419:13)
    at Function.Module.runMain (module.js:499:11)
    at startup (node.js:119:16)
    at node.js:906:3

これに続いて、より便利ですが、まだ明示的ではありません。

Failing scenarios:
$HOME/features/delete-item.feature:6 # Scenario: Item removed from portfolio
$HOME/features/delete-item.feature:11 # Scenario: Item not accessible from portfolio

4 scenarios (2 failed, 2 passed)
12 steps (2 failed, 2 skipped, 8 passed)

実際、ほとんどの場合、私が気にかけているのは最初の 4 行だけです。

TypeError: Object #<Object> has no method 'delete'
at World.<anonymous> ($HOME/features/step_definitions/delete-item.steps.js:20:21)
at Object.invoke ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/support_code/step_definition.js:84:14)
at Object.execute ($HOME/node_modules/grunt-cucumber/node_modules/cucumber/lib/cucumber/ast/step.js:157:22)

何か案は？

score 1 · Accepted Answer

ノードで収集されるスタックトレースのサイズを完全に制限できます。

コードで、エラーメッセージ (ヘッダー) のみをログに記録し、スタックトレースをログに記録しないように、次のように設定します。

Error.stackTraceLimit = 0;

または、最初の 4 行 (エラーメッセージと 3 つのスタックフレーム) のみを表示するには、次を使用します。

Error.stackTraceLimit = 3;

この値はノードに収集するスタックフレームの最大数を与えるため、任意のコンテキストでエラーログの目的に適した値に設定できます。

任意の時点で完全なスタックトレースを収集するために設定を戻す必要がある場合は、次を使用できます。

Error.stackTraceLimit = Infinity;

アップデート

hide-stack-frames-from の使用も参照してください。

これにより、スタックトレースから不要なフレームを除外し、適切なフレームだけを残すことで、スタックトレースのノーズを削除するという実際の問題をはるかにエレガントに解決できます。根本的な問題。

たとえば、上記の行を次のように置き換えることができます

require('hide-stack-frames-from')('cucumber', 'bluebird', 'superagent');

スタックフレームを除外したいモジュールの名前を渡すだけです。

node.js - Cucumber JS でエラーのヘッダーのみを表示するにはどうすればよいですか?

1 に答える 1

Related

Reference