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
226–250 de 568, medidos por amostras publicadas.
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golangContrato da amostrago · linux/x64gorm.io/gorm@v1.31.2
Acredita-seA conditional Preload filters root parent records and Joins can load a HasMany slice association in GORM 1.31.2.
Medidoassert Preload with a condition returns both parent records and leaves the nonmatching parent's child slice empty
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pypiContrato da amostrapython · linux/x64joblib@1.5.3
Acredita-sePassing mmap_mode='r' to joblib.load guarantees a numpy.memmap for compatible arrays, regardless of how the file was serialized.
Medidojoblib 1.5.3 loading a NumPy 2.5.2 array saved with compress=3 and mmap_mode='r' warns that memory mapping is incompatible with compression and returns an in-memory ndarray.
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pypiContrato da amostrapython 3.12 · linux/x64requests@2.34.2
Acredita-sePreparing a Request directly and sending it through a Session automatically applies that Session's headers, cookies, and REQUESTS_CA_BUNDLE setting.
Medidoassert Request.prepare omits Session default headers and cookies while Session.prepare_request applies both
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pubContrato da amostradart · linux/x64shelf@1.4.2
Acredita-seMounting with `'/api'` only handles `/api/...` and should not match a request to `/api` itself.
MedidoA GET request to /api after app.mount('/api', subRouter.call) reaches the mounted sub-router root.
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pubContrato da amostradart · linux/x64equatable@2.1.0
Acredita-seTwo generic Equatable instances with identical values are equal when one type argument is a subtype of the other, such as Box<num>(42) and Box<int>(42).
MedidoTwo generic Equatable instances with identical values are not equal when type arguments differ across subtype boundaries, and their runtimeType-dependent hashCodes differ.
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pubContrato da amostradart · linux/x64collection@1.19.1
Acredita-seHeapPriorityQueue's unorderedElements property yields elements in priority-sorted order and PriorityQueue implements Iterable.
MedidoPriorityQueue does not implement Iterable, and HeapPriorityQueue.unorderedElements yields elements in internal binary heap storage order rather than priority-sorted order.
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pubContrato da amostradart · linux/x64args@2.7.0
Acredita-seArgParser.addMultiOption treats each command-line argument value as a single list entry without splitting on internal commas.
MedidoaddMultiOption splits comma-separated values into multiple entries by default, requiring splitCommas: false to preserve a single argument such as '--define env=prod,region=us-east' as ['env=prod,region=us-east'].
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npmContrato da amostranode · linux/x64puppeteer@24.43.1
Acredita-seA developer might assume Puppeteer simply inherits the browsers-layer version value and prints the `@puppeteer/browsers` package version.
MedidoRunning `node_modules/puppeteer/lib/cjs/puppeteer/node/cli.js --version` reports the Puppeteer package version and does not report `@puppeteer/browsers` version.
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npmContrato da amostranode · linux/x64vitest@4.0.0
Acredita-seA mock created with vi.fn records zero-based invocation order values, so its first two calls are numbered 0 and 1.
Medidoassert two calls to one vi.fn mock produce mock.invocationCallOrder equal to [1, 2]
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pubContrato da amostradart · linux/x64args@2.7.0
Acredita-seArgParser stops matching options at the first positional argument unless allowTrailingOptions is set to true.
MedidoArgParser().parse(["data.bin", "--force"]) sets force to true and keeps only data.bin in rest because trailing options are enabled by default.
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npmContrato da amostranode · linux/x64@rollup/plugin-commonjs@28.0.7
Acredita-seA strict plugin pass can still eagerly hoist conditional `node:` builtin requires into initialization code.
MedidoBundling `if (false) { require('node:sqlite'); }` with `@rollup/plugin-commonjs` and `strictRequires: true` does not include `node:sqlite` in the generated CommonJS bundle.
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npmContrato da amostranode · linux/x64puppeteer@24.4.0
Acredita-sePuppeteer's device and network presets are properties on the default export, device descriptors use mobile/touch keys, and network throughput values are kilobits per second.
MedidoPuppeteer 24.4.0 exposes KnownDevices and PredefinedNetworkConditions as named exports, not properties on its default export.
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npmContrato da amostranode · linux/x64puppeteer@25.7.0
Acredita-seOn current Puppeteer, page.screenshot() returns a Node.js Buffer, so calling result.toString('base64') uses Buffer's encoding overload.
MedidoTypeScript 5.9 accepts Puppeteer 25.7.0 page.screenshot() with default options as Uint8Array and rejects an encoding argument passed to Uint8Array.toString.
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golangContrato da amostrago · linux/x64github.com/spf13/viper@v1.21.0
Acredita-seviper.GetStringSlice parses a comma-separated environment value into the same multi-element slice as viper.Unmarshal.
Medidoassert Unmarshal returns two elements for that same comma-separated environment value
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npmContrato da amostranode · linux/x64bun@1.3.14
Acredita-seBun.deepEquals treats a plain object with matching numeric indices and length as structurally equal to a TypedArray containing the same elements.
MedidoBun.deepEquals returns false when comparing a numeric-keyed plain object to a Uint8Array with matching elements and length, verifying internal typed-array slots rather than only enumerable index properties
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npmContrato da amostranode · linux/x64@babel/core@7.29.7
Acredita-seLoading @babel/core through createRequire from an ES module throws instead of returning the CommonJS API object.
Medidoassert createRequire can load @babel/core 7.29.7 from the ES module contract
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golangContrato da amostrago · linux/x64sigs.k8s.io/yaml@v1.5.0
Acredita-seA scalar type mismatch reported by sigs.k8s.io/yaml.Unmarshal is opaque text that cannot be matched as json.UnmarshalTypeError with errors.As.
Medidoassert unmarshaling a: not_a_number into an int field returns a non-nil error
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pypiContrato da amostrapython 3.12 · linux/x64pydantic-settings@2.15.0
Acredita-sePydantic BaseSettings reads nested environment variables using '__' as a delimiter by default.
Medidoassert a DATABASE__HOST environment variable is ignored for a nested model when env_nested_delimiter is not configured
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pypiContrato da amostrapython · linux/x64jinja2@3.1.6
Acredita-seUnder StrictUndefined, undefined variables evaluate to falsy in boolean conditionals and fall back cleanly through the default filter on nested attributes.
MedidoBoolean evaluation of an undefined variable in an if condition raises UndefinedError under StrictUndefined instead of evaluating as falsy
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npmContrato da amostranode · linux/x64jsdom@26.1.0
Acredita-seTwo setState calls using the current state value will both increment the counter, resulting in a final state of 2
Medidoassert two sequential setCount(count + 1) calls in one React 18 concurrent-root update produce a final rendered state of 1
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pubContrato da amostradart · linux/x64crypto@3.0.6
Acredita-seInternal constructor invariants in package:crypto throw an ArgumentError or StateError on invalid configurations regardless of Dart runtime flags.
MedidoInstantiating HashSink with signatureBytes less than 8 bypasses checks and produces a digest in default mode, but throws AssertionError only when Dart is run with the --enable-asserts flag.
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pubContrato da amostradart · linux/x64args@2.7.0
Acredita-seArgParser.parse() throws an exception immediately when a mandatory option is omitted from the provided arguments.
MedidoArgParser.parse() completes successfully when a mandatory option is omitted, and the validation exception is only thrown later when the missing option is retrieved from the ArgResults object.
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npmContrato da amostranode · linux/x64react@19.2.8
Acredita-seRendering an element with an empty string attribute such as `<img src="">` keeps that attribute in `react-dom` server output.
Medidoassert `renderToString` removes an empty `src` attribute from `<img>` output
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npmContrato da amostranode · linux/x64marked@18.0.9
Acredita-seAs long as a `walkTokens` hook is declared `async`, Marked will apply its token mutations to output even when `async` is not enabled.
MedidoWith a `walkTokens` function that mutates heading depth after awaiting, Marked renders `<h1>Heading</h1>` with `async` false, and `<h6>Heading</h6>` only when `async: true` is set.
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npmContrato da amostranode · linux/x64luxon@3.7.2
Acredita-seA caller can create a local calendar date with `DateTime.local({ year, month, day })` because the signature appears to accept an object-based constructor form.
MedidoWith `Settings.now` fixed, `DateTime.local({ year: 2024, month: 2, day: 14 })` returns a valid DateTime at the fixed current instant, showing that the object is treated as options and its unit fields are ignored.
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.