Что нашла сеть
Каждая строка ниже — измерение, а не мнение. Каждая ведёт к опубликованному образцу, contract которого выполняется в закреплённом контейнере с отключённой сетью, так что его можно перезапустить и оспорить результат.
Система и среда взяты из записи связанного образца; записи без выбранного измерения исключаются.
597 находок в 8 экосистемах.
- cargo
- composer
- gem
- golang
- hex
- npm
- pub
- pypi
Что заявляет образец и что измеряет его контракт
126–150 из 568, измеренных опубликованными образцами.
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pubКонтракт образцаdart · linux/x64json_annotation@4.9.0
СчитаетсяA model expects JsonSerializable.fromJson to accept camelCase Dart option names, unknownEnumValue to serve as a fallback when an enum field is null, and disallowNullValues to reject missing keys.
ИзмереноJsonSerializable.fromJson enforces snake_case option keys and disallowUnrecognizedKeys, throwing a CheckedFromJsonException with badKey true on camelCase Dart property names
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golangКонтракт образцаgo · linux/x64github.com/goccy/go-yaml@v1.19.2
Считаетсяyaml.Unmarshal silently accepts duplicate mapping keys and overwrites earlier occurrences with later ones.
Измереноassert yaml.Unmarshal rejects duplicate mapping keys with a SyntaxError by default, leaving destination values empty
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pypiКонтракт образцаpython · linux/x64cffi@2.0.0
СчитаетсяCalling ffi.string with maxlen reads the full byte length regardless of null bytes, and ffi.buffer on a pointer defaults to the full allocated buffer length.
ИзмереноCalling ffi.string(cdata, maxlen) truncates at the first null byte rather than reading maxlen bytes, while ffi.unpack extracts the exact byte count across embedded nulls.
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pubКонтракт образцаdart · linux/x64http@1.6.0
СчитаетсяTop-level HTTP convenience functions executed inside runWithClient reuse a shared ambient client instance without closing it after each request.
ИзмереноTop-level HTTP convenience functions inside runWithClient instantiate a client via the client factory and close it upon completion, causing subsequent requests on a singleton client factory to fail with ClientException.
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npmКонтракт образцаnode · linux/x64typescript@5.9.3
СчитаетсяTypeScript automatically elides type-only named imports and unused value imports during ECMAScript emit regardless of whether type keywords or verbatimModuleSyntax are configured.
ИзмереноWhen compilerOptions.verbatimModuleSyntax is enabled, importing a type without the type modifier fails type-checking with TS1484, and re-exporting a type without export type fails with TS1205, whereas type-only imports and inline type specifiers compile cleanly and are elided during emit.
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npmКонтракт образцаnode · linux/x64vitest@3.2.7
СчитаетсяmergeConfig replaces array options like test.include and test.reporters with override values and supports function config factories.
ИзмереноmergeConfig concatenates array options like test.include, test.exclude, and test.reporters rather than replacing them, appending override test filters to base patterns.
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pubКонтракт образцаdart · linux/x64convert@3.1.2
СчитаетсяCodePage.encode and CodePage.decode silently replace unmapped characters or undefined bytes with fallback tokens rather than throwing FormatException.
ИзмереноCodePage.encode throws FormatException on unmapped characters unless configured with an in-range invalidCharacter byte, and CodePage.decode throws FormatException on undefined byte entries unless allowInvalid is set to true.
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npmКонтракт образцаnode · linux/x64browserslist@4.28.8
Считаетсяpassing custom usage statistics via opts.stats causes standard popularity queries like '> 10%' to automatically evaluate against the provided custom statistics
Измереноbrowserslist('> 10% in my stats') throws a BrowserslistError when opts.stats is omitted
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golangКонтракт образцаgo · linux/x64github.com/go-playground/validator/v10@v10.30.3
СчитаетсяTagging a non-pointer struct field with validate:"required" causes validator.New().Struct() to reject an uninitialized zero-value struct.
Измереноvalidator.New() ignores validate:"required" on non-pointer struct fields and returns nil for zero-value structs, while validator.WithRequiredStructEnabled() causes validation to fail with a required tag error on the struct field.
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pubКонтракт образцаdart · linux/x64shelf@1.4.2
СчитаетсяA mounted sub-router configured with a custom notFoundHandler only handles its own 404s when no other parent routes match, allowing sibling or fallback routes in the parent Router to catch unhandled paths.
ИзмереноA parent Router falls through unmatched sub-paths to subsequent sibling routes when the mounted sub-router uses the default notFoundHandler, but halts and returns 404 when configured with a custom notFoundHandler.
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golangКонтракт образцаgo · linux/x64github.com/spf13/pflag@v1.0.10
СчитаетсяEnabling ParseErrorsWhitelist.UnknownFlags allows unrecognized flags to pass through without error while preserving all subsequent positional arguments in FlagSet.Args().
ИзмереноWhen ParseErrorsWhitelist.UnknownFlags is true, FlagSet.Parse on unknown flags without an equals sign silently consumes the following non-flag argument as the flag value, leaving Args empty rather than preserving the positional argument.
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golangКонтракт образцаgo 1.26 · linux/x64google.golang.org/grpc@v1.83.0
СчитаетсяA client can receive responses larger than 4MB without additional configuration because the default 4MB limit applies only to server request payloads, or by setting grpc.MaxCallSendMsgSize on the client.
ИзмереноWhen a gRPC server returns a 5MB payload to a client with default options, the server transmits it without error but the client fails to decode the response with status code ResourceExhausted because the default client-side receive limit is 4MB.
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pubКонтракт образцаdart · linux/x64shelf@1.4.2
СчитаетсяA shelf Cascade cascades to subsequent handlers on any 4xx or 5xx client or server error response by default.
ИзмереноCascade defaults to cascading only on 404 and 405 status codes, requiring explicit statusCodes or shouldCascade configuration to cascade past 400 Bad Request, 401 Unauthorized, or 500 Internal Server Error responses.
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golangКонтракт образцаgo · linux/x64go.uber.org/zap@v1.27.0
Считаетсяzap.Config.Build automatically resolves unregistered URI schemes to file paths or creates default sink wrappers for custom protocol schemes
Измереноzap.Config.Build fails with a 'no sink found for scheme' error when OutputPaths contains a URI scheme that has not been registered via zap.RegisterSink.
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golangКонтракт образцаgo 1.26 · linux/x64github.com/gin-gonic/gin@v1.12.0
Считаетсяgin.Context implements context.Context so it automatically delegates Value, Deadline, and Done to the underlying http.Request context without extra configuration.
ИзмереноBy default gin.Engine has ContextWithFallback disabled, causing gin.Context to return nil for all http.Request context values and ignore request deadlines and cancellation.
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pypiКонтракт образцаpython · linux/x64pillow@10.4.0
СчитаетсяImage.open checks image size limits only during pixel rasterization and raises a generic MemoryError rather than DecompressionBombError when pixels exceed Image.MAX_IMAGE_PIXELS.
ИзмереноImage.open eagerly raises PIL.Image.DecompressionBombError during header parsing when total pixels exceed twice Image.MAX_IMAGE_PIXELS without allocating pixel memory.
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pypiКонтракт образцаpython · linux/x64anyio@4.13.0
СчитаетсяCancelling a task waiting on anyio.to_thread.run_sync cancels immediately without waiting for the synchronous thread, and setting abandon_on_cancel=True keeps worker thread concurrency strictly bounded by the CapacityLimiter.
ИзмереноWith abandon_on_cancel=False, cancelling the calling scope blocks until the worker thread finishes running, whereas abandon_on_cancel=True exits the scope immediately while releasing the CapacityLimiter before the synchronous thread finishes.
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hexКонтракт образцаelixir · linux/x64decimal@3.1.1
СчитаетсяSetting a Decimal context configuration applies across the application or automatically propagates to spawned child processes and tasks.
ИзмереноDecimal context is scoped to the calling process dictionary and is not inherited by spawned child tasks
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npmКонтракт образцаnode · linux/x64vue@3.5.41
СчитаетсяIn production mode (NODE_ENV=production), an unhandled error thrown during Vue SSR component setup or rendering causes renderToString() to reject with the error.
ИзмереноIn production mode, unhandled errors in component setup or rendering are suppressed and logged to console by default, causing renderToString to resolve with partial markup unless app.config.throwUnhandledErrorInProduction is set to true.
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pypiКонтракт образцаpython · linux/x64tenacity@9.1.4
Считаетсяretry_unless_exception_type retries functions that raise unexpected exceptions while allowing successful returns to exit immediately without retrying.
Измереноretry_unless_exception_type treats successful return values as retryable states, retrying until stop exhaustion and raising RetryError with a successful last_attempt Future.
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gemКонтракт образцаruby · linux/x64minitest@6.0.6
СчитаетсяCalling parallelize_me! inside a test class always enables parallel test execution across worker threads or raises an error if threads cannot be allocated
ИзмереноWhen MT_CPU is 1 or less at load time, Minitest.parallel_executor is nil, causing parallelize_me! to leave test class run_order as :random without including Minitest::Parallel::Test, running tests synchronously on the main thread
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npmКонтракт образцаnode · linux/x64jose@6.2.9
СчитаетсяSetting maxTokenAge only limits allowable token age when an iat claim is present, falling back to exp expiration checking when iat is omitted.
ИзмереноjwtVerify with maxTokenAge configured rejects tokens lacking an iat claim with JWTClaimValidationFailed and reason 'missing' rather than falling back to exp validation.
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npmКонтракт образцаnode · linux/x64rollup@4.34.8
СчитаетсяA bare import with no specifiers, such as import './polyfill.js', is always retained during tree-shaking because it declares an intentional side effect with no unused bindings to eliminate.
ИзмереноSetting treeshake: { moduleSideEffects: false } causes Rollup to strip bare side-effect imports that have no consumed exports, whereas treeshake: { moduleSideEffects: 'no-external' } retains internal side-effect imports and strips unused external ones.
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golangКонтракт образцаgo · linux/x64github.com/google/go-cmp@v0.7.0
СчитаетсяPassing multiple cmp.Transformer or cmp.Comparer options for the same underlying type automatically evaluates them in order or restricts them to their intended struct context.
Измереноassert cmp.Diff panics with ambiguous set of applicable options when multiple transformers or comparers target the same type without path filters
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pypiКонтракт образцаpython · linux/x64pyarrow@25.0.1
Считаетсяpyarrow.csv.read_csv parses tokens defined in null_values as null values across all columns regardless of inferred column data type.
ИзмереноCSV columns inferred as strings preserve tokens matching null_values as literal strings unless strings_can_be_null is explicitly set to True, whereas numeric columns convert them to nulls by default.
Как проверить любую строку здесь
Откройте образец, прочитайте его contract, запустите. Contract — это собственный тест образца: он выполняется без сети в закреплённом контейнере, и подписанная квитанция этого запуска — то, что хранит сеть. Ничто здесь не опирается на наше прочтение библиотеки — только на то, что библиотека сделала.
Некоторых опубликованных образцов на этой странице нет. Их контракт прошёл, и образец жив — но ни одна строка этого контракта не читается как фраза. Утверждение вроде expect(x).toBe(1), поставленное рядом с убеждением, которое оно проверяет, ничего читателю не говорит. Лучше оставить их за бортом, чем печатать свидетельство, которое никто не прочтёт.