O que a rede encontrou
Cada linha abaixo é uma medição, não uma opinião. Todas apontam para uma amostra publicada cujo contract é executado em um contêiner fixado e sem rede, então você pode reexecutá-lo e discordar do resultado.
O sistema e o runtime vêm do ambiente registrado pela amostra; dimensões ausentes são excluídas ao filtrar.
597 achados em 8 ecossistemas.
- cargo
- composer
- gem
- golang
- hex
- npm
- pub
- pypi
O que a amostra afirma e o contrato dela mede
526–550 de 568, medidos por amostras publicadas.
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composerContrato da amostraphp · linux/x64symfony/console@v8.1.4
Acredita-seQuestionHelper applies configured Question normalizers to default values in non-interactive execution before validating and returning the response.
MedidoQuestionHelper::ask() in non-interactive mode completely bypasses Question::setNormalizer(), returning the unnormalized default value and passing the unnormalized type directly to the validator.
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composerContrato da amostraphp · linux/x64symfony/console@7.4.16
Acredita-seA model expects that destroying StreamOutput closes its underlying stream resource, ConsoleOutput opens fresh stream handles per instance, OutputFormatter resets style tags between format calls, and ProgressBar writes output to STDOUT.
MedidoStreamOutput does not close its underlying stream resource when destroyed, leaving the file descriptor open unless explicitly closed with fclose by the caller
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composerContrato da amostraphp · linux/x64symfony/console@8.1.4
Acredita-seSerializing an ArrayInput instance to a CLI string with __toString() produces argument tokens that preserve boolean flag states and option values when round-tripped through StringInput.
MedidoArrayInput::__toString() serializes a boolean true flag as '--flag=1', which throws RuntimeException when rebound to a VALUE_NONE option, and serializes a boolean false flag as '--flag', which inverts the flag to true when reparsed.
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composerContrato da amostraphp · linux/x64symfony/console@7.2.1
Acredita-seDeclaring a protected static $defaultName property on a Command subclass sets the command name and description and allows registering it with Application::add().
MedidoIn Symfony Console 7, Command::getDefaultName() returns null for classes defining static $defaultName, leaving the command name null and causing Application::add() to throw LogicException unless configured via the #[AsCommand] attribute.
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golangContrato da amostrago · linux/x64sigs.k8s.io/yaml@v1.6.0
Acredita-seUnmarshaling YAML with type mismatches returns a yaml.TypeError, non-pointer destinations return an InvalidUnmarshalError, and UnmarshalStrict returns uniform YAML unmarshal errors for all schema violations.
MedidoType mismatch in YAML unmarshaling returns a wrapped *json.UnmarshalTypeError with prefix 'error unmarshaling JSON' and does not match yaml.TypeError
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hexContrato da amostraelixir · linux/x64nimble_options@1.1.1
Acredita-seA custom type callback is expected to return an error tuple and still be reported as {:error, ValidationError}; anything else should do the same.
Medidoassert NimbleOptions.validate([port: :bad], custom_schema()) converts {:error, message} from the callback into a NimbleOptions.ValidationError whose message is prefixed with the library error field
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hexContrato da amostraelixir · linux/x64decimal@3.1.1
Acredita-seDecimal.new/1 and Decimal.parse/1 parse any decimal string containing up to the default decimal128 context precision of 34 significant digits regardless of leading zeros.
Medidoassert Decimal.new parses 34 significant digits with leading zero without exceeding max_digits
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golangContrato da amostrago · linux/x64github.com/go-chi/chi/v5@v5.3.1
Acredita-seCalling ClientIPFromXFF with no arguments extracts the originating client IP from the leftmost entry in X-Forwarded-For and updates RemoteAddr like RealIP.
Medidoassert ClientIPFromXFF with unset trusted prefixes returns the rightmost XFF hop rather than the leftmost client IP
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golangContrato da amostrago · linux/x64github.com/go-chi/chi/v5@v5.3.1
Acredita-seRegistering middleware.URLFormat and middleware.StripSlashes in either order yields the same route match behavior for /item.json/.
MedidoWhen middleware.URLFormat is registered before middleware.StripSlashes and only GET /item exists, GET /item.json/ returns 404.
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golangContrato da amostrago · linux/x64sigs.k8s.io/yaml@v1.4.0
Acredita-sesigs.k8s.io/yaml.Unmarshal preserves exact 64-bit integer values when decoding YAML into untyped maps or interface{} fields without explicit decoder options.
Medidoassert default Unmarshal silently truncates integers above 2^53 into float64 whereas JSONOpt UseNumber preserves exact int64 values as json.Number
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golangContrato da amostrago · linux/x64encoding/json@v1.26.5
Acredita-seA JSON encoder serializes string values using standard RFC 8259 character escaping, preserving literal <, >, and & characters unless HTML escaping is explicitly enabled.
Medidoassert json.NewEncoder with default settings escapes <, >, and & into \u003c, \u003e, and \u0026
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golangContrato da amostrago · linux/x64sigs.k8s.io/yaml@v1.4.0
Acredita-seA caller expects unknown YAML keys to be rejected by default when decoding into a typed struct.
Medidoassert Unmarshal succeeds when decoding `name: main unknown: value` into `decodeTarget` without options
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golangContrato da amostrago · linux/x64encoding/json@go1.26.5
Acredita-seUsing Decoder.UseNumber causes every decoded number to be produced as json.Number, even when decoding into a concrete numeric struct field.
Medidoassert that decoding `{"count": 7, "wildcard": 7}` with Decoder.UseNumber into struct `{Count int; Wildcard any}` yields `Count` as an `int` and `Wildcard` as `json.Number`
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golangContrato da amostrago · linux/x64net/http@go1.26.5
Acredita-seA caller using a default http.Client should see the same payload bytes and encoding metadata that the server put on the response.
MedidoWhen a server writes a gzip-compressed body, a default http.Client request must return plain text bytes, not gzip bytes.
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golangContrato da amostrago · linux/x64net/http@go1.26.5
Acredita-seA POST request that receives a 303 See Other keeps its method and body through automatic redirect following.
MedidoA default client must follow `StatusSeeOther` (`303`) by issuing the next request as `GET`, not as the original method.
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golangContrato da amostrago · linux/x64net/http@go1.26.5
Acredita-seA method token in a ServeMux pattern, such as `GET /resource`, is just part of the path and does not affect routing.
MedidoRegistering `HandleFunc("GET /resource", ...)` and `HandleFunc("POST /resource", ...)` must allow GET and POST only, while a PUT request to `/resource` must fail with 405.
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golangContrato da amostrago · linux/x64encoding/json@v1.26.5
Acredita-sejson.Marshal encodes fixed-size byte arrays [N]byte as Base64 strings and json.Unmarshal decodes Base64 strings into byte arrays.
Medidoassert json.Marshal encodes fixed-size byte array [N]byte as a JSON numeric array instead of a base64 string
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golangContrato da amostrago · linux/x64encoding/json@go1.26.5
Acredita-seA field is omitted only when its value is reflect-empty, so a non-empty struct value must always be serialized unless `omitempty` is false.
Medidoassert json.Marshal with tag `field,omitzero` omits a non-empty struct when its IsZero() method returns true
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golangContrato da amostrago · linux/x64encoding/json@v1.26.5
Acredita-seA caller can treat json.Encoder.Encode as json.Marshal followed by Write, so the output bytes are exactly the JSON value.
Medidoassert that json.NewEncoder(&buf).Encode(v) appends a trailing \n byte to the encoded output
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pypiContrato da amostrapython · linux/x64httpx2@2.10.0
Acredita-sePassing query parameters via the params argument merges them with query parameters already present in the target URL.
Medidoassert passing params to Request('GET', 'https://example.com/search?q=python', params={'page': '2'}) overwrites the URL query to 'page=2', discarding 'q=python'
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composerContrato da amostraphp · linux/x64symfony/console@7.4.16
Acredita-seA competent developer or model expects that during the execution of a parent command, the Application's active running command context is preserved across sub-command invocations, ensuring that error rendering retains the parent command's synopsis throughout its lifecycle.
MedidoApplication doRun resets runningCommand to null upon sub-command completion instead of restoring the parent command
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composerContrato da amostraphp · linux/x64guzzlehttp/guzzle@8.0.2
Acredita-sePassing a stream or resource sink to a request that follows redirects writes only the final destination response body into the sink.
Medidoassert a stream sink passed during redirected requests accumulates both intermediate redirect bodies and final response body instead of only the destination body
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npmContrato da amostranode · linux/x64vitest@4.1.10
Acredita-semockReset clears call records and replaces the mock implementation with an empty function returning undefined like Jest, rather than reverting to the initial implementation while keeping the spy active
Medidoassert mockReset on vi.spyOn reverts to initial method implementation instead of undefined while continuing to intercept and record calls
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cargoContrato da amostrarust · linux/x64winnow@1.0.4
Acredita-seWhen an alt combinator fails on invalid input after partially matching an alternative, ContextError preserves the error details and byte offset from whichever branch parsed deepest.
Medidoassert alt with ContextError discards a partial match in an earlier branch and returns the error and offset of the last evaluated branch, while cut_err prevents backtrack and preserves the deep failure site
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composerContrato da amostraphp · linux/x64symfony/console@8.1.4
Acredita-seUnrecognized CLI options throw InvalidOptionException and missing required arguments throw MissingInputException.
MedidoArgvInput with an unknown option throws RuntimeException rather than InvalidOptionException or InvalidArgumentException
Como conferir qualquer linha daqui
Abra a amostra, leia o contract dela e execute. O contract é o teste da própria amostra: roda sem rede em um contêiner fixado, e o recibo assinado dessa execução é o que a rede guarda. Nada aqui depende de como lemos uma biblioteca, apenas do que ela fez.
Algumas amostras publicadas não estão nesta página. O contrato delas passou e a amostra está no ar, mas nenhuma linha desse contrato se lê como uma frase. Uma asserção como expect(x).toBe(1), ao lado da crença que verifica, não diz nada a quem lê. Preferimos deixá-las de fora a publicar evidência que ninguém consegue ler.