trust-tasks-rs 0.10.0

Reference Rust library for the Trust Tasks framework — transport-agnostic, JSON-based descriptions of verifiable work between parties.
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//! Generated by `trust-tasks-codegen` — do not edit by hand.
//!
//! Spec slug: `vta/contexts/list`. Version: `1.0`.
#[allow(unused_imports)]
use serde::{Deserialize, Serialize};
/// Error types.
pub mod error {
    /// Error from a `TryFrom` or `FromStr` implementation.
    pub struct ConversionError(::std::borrow::Cow<'static, str>);
    impl ::std::error::Error for ConversionError {}
    impl ::std::fmt::Display for ConversionError {
        fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> Result<(), ::std::fmt::Error> {
            ::std::fmt::Display::fmt(&self.0, f)
        }
    }
    impl ::std::fmt::Debug for ConversionError {
        fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> Result<(), ::std::fmt::Error> {
            ::std::fmt::Debug::fmt(&self.0, f)
        }
    }
    impl From<&'static str> for ConversionError {
        fn from(value: &'static str) -> Self {
            Self(value.into())
        }
    }
    impl From<String> for ConversionError {
        fn from(value: String) -> Self {
            Self(value.into())
        }
    }
}
///A context as the VTA holds it.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "title": "ContextRecord",
///  "description": "A context as the VTA holds it.",
///  "type": "object",
///  "required": [
///    "basePath",
///    "createdAt",
///    "id",
///    "name",
///    "updatedAt"
///  ],
///  "properties": {
///    "basePath": {
///      "description": "Resolved path from the root context, as the VTA derives it from the parent chain. Consumers MUST treat this as derived state: it is recomputed by the maintainer and is not independently settable.",
///      "type": "string"
///    },
///    "createdAt": {
///      "description": "RFC 3339.",
///      "type": "string",
///      "format": "date-time"
///    },
///    "description": {
///      "description": "Free-form description.",
///      "type": "string"
///    },
///    "did": {
///      "description": "DID this context acts as, when one has been assigned. Absent means the context has no identity of its own yet — not that it has been denied one.",
///      "type": "string"
///    },
///    "ext": {
///      "$ref": "#/definitions/Ext"
///    },
///    "id": {
///      "description": "Context id. For a nested context this is the full path (`parent/leaf`), not the leaf alone — an ACL scope naming this context must use this value verbatim.",
///      "type": "string",
///      "minLength": 1
///    },
///    "name": {
///      "description": "Human-readable name. Operator-facing only; carries no authorization meaning, and two contexts may share a name.",
///      "type": "string",
///      "minLength": 1
///    },
///    "parent": {
///      "description": "Id of the context this one nests under. Absent for a top-level context. Authority granted at a parent reaches its children, so this member is load-bearing for anyone reasoning about scope.",
///      "type": "string"
///    },
///    "updatedAt": {
///      "description": "RFC 3339.",
///      "type": "string",
///      "format": "date-time"
///    }
///  },
///  "additionalProperties": false
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(deny_unknown_fields)]
pub struct ContextRecord {
    ///Resolved path from the root context, as the VTA derives it from the parent chain. Consumers MUST treat this as derived state: it is recomputed by the maintainer and is not independently settable.
    #[serde(rename = "basePath")]
    pub base_path: ::std::string::String,
    ///RFC 3339.
    #[serde(rename = "createdAt")]
    pub created_at: ::chrono::DateTime<::chrono::offset::Utc>,
    ///Free-form description.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub description: ::std::option::Option<::std::string::String>,
    ///DID this context acts as, when one has been assigned. Absent means the context has no identity of its own yet — not that it has been denied one.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub did: ::std::option::Option<::std::string::String>,
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub ext: ::std::option::Option<Ext>,
    ///Context id. For a nested context this is the full path (`parent/leaf`), not the leaf alone — an ACL scope naming this context must use this value verbatim.
    pub id: ContextRecordId,
    ///Human-readable name. Operator-facing only; carries no authorization meaning, and two contexts may share a name.
    pub name: ContextRecordName,
    ///Id of the context this one nests under. Absent for a top-level context. Authority granted at a parent reaches its children, so this member is load-bearing for anyone reasoning about scope.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub parent: ::std::option::Option<::std::string::String>,
    ///RFC 3339.
    #[serde(rename = "updatedAt")]
    pub updated_at: ::chrono::DateTime<::chrono::offset::Utc>,
}
///Context id. For a nested context this is the full path (`parent/leaf`), not the leaf alone — an ACL scope naming this context must use this value verbatim.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "Context id. For a nested context this is the full path (`parent/leaf`), not the leaf alone — an ACL scope naming this context must use this value verbatim.",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct ContextRecordId(::std::string::String);
impl ::std::ops::Deref for ContextRecordId {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<ContextRecordId> for ::std::string::String {
    fn from(value: ContextRecordId) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for ContextRecordId {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() < 1usize {
            return Err("shorter than 1 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for ContextRecordId {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for ContextRecordId {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for ContextRecordId {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for ContextRecordId {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///Human-readable name. Operator-facing only; carries no authorization meaning, and two contexts may share a name.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "Human-readable name. Operator-facing only; carries no authorization meaning, and two contexts may share a name.",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct ContextRecordName(::std::string::String);
impl ::std::ops::Deref for ContextRecordName {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<ContextRecordName> for ::std::string::String {
    fn from(value: ContextRecordName) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for ContextRecordName {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() < 1usize {
            return Err("shorter than 1 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for ContextRecordName {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for ContextRecordName {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for ContextRecordName {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for ContextRecordName {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///Vendor-namespaced extension object per SPEC.md §4.5.1. Each immediate key MUST be a reverse-DNS namespace; structure under each namespace is opaque to the framework.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "title": "Ext",
///  "description": "Vendor-namespaced extension object per SPEC.md §4.5.1. Each immediate key MUST be a reverse-DNS namespace; structure under each namespace is opaque to the framework.",
///  "type": "object",
///  "minProperties": 1,
///  "additionalProperties": true,
///  "propertyNames": {
///    "pattern": "^[a-z][a-z0-9-]*(\\.[a-z0-9-]+)+$"
///  }
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(transparent)]
pub struct Ext(pub ::std::collections::HashMap<ExtKey, ::serde_json::Value>);
impl ::std::ops::Deref for Ext {
    type Target = ::std::collections::HashMap<ExtKey, ::serde_json::Value>;
    fn deref(&self) -> &::std::collections::HashMap<ExtKey, ::serde_json::Value> {
        &self.0
    }
}
impl ::std::convert::From<Ext> for ::std::collections::HashMap<ExtKey, ::serde_json::Value> {
    fn from(value: Ext) -> Self {
        value.0
    }
}
impl ::std::convert::From<::std::collections::HashMap<ExtKey, ::serde_json::Value>> for Ext {
    fn from(value: ::std::collections::HashMap<ExtKey, ::serde_json::Value>) -> Self {
        Self(value)
    }
}
///`ExtKey`
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "type": "string",
///  "pattern": "^[a-z][a-z0-9-]*(\\.[a-z0-9-]+)+$"
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct ExtKey(::std::string::String);
impl ::std::ops::Deref for ExtKey {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<ExtKey> for ::std::string::String {
    fn from(value: ExtKey) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for ExtKey {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        static PATTERN: ::std::sync::LazyLock<::regress::Regex> =
            ::std::sync::LazyLock::new(|| {
                ::regress::Regex::new("^[a-z][a-z0-9-]*(\\.[a-z0-9-]+)+$").unwrap()
            });
        if PATTERN.find(value).is_none() {
            return Err("doesn't match pattern \"^[a-z][a-z0-9-]*(\\.[a-z0-9-]+)+$\"".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for ExtKey {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for ExtKey {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for ExtKey {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for ExtKey {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///Request payload for vta/contexts/list. Takes no filters: the result is already narrowed to what the caller may reach.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "$id": "https://trusttasks.org/spec/vta/contexts/list/1.0",
///  "title": "Payload",
///  "description": "Request payload for vta/contexts/list. Takes no filters: the result is already narrowed to what the caller may reach.",
///  "type": "object",
///  "properties": {
///    "ext": {
///      "$ref": "#/definitions/Ext"
///    }
///  },
///  "additionalProperties": false
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(deny_unknown_fields)]
pub struct Payload {
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub ext: ::std::option::Option<Ext>,
}
impl ::std::default::Default for Payload {
    fn default() -> Self {
        Self {
            ext: Default::default(),
        }
    }
}
///Success response to vta/contexts/list. Type https://trusttasks.org/spec/vta/contexts/list/1.0#response.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "title": "Response",
///  "description": "Success response to vta/contexts/list. Type https://trusttasks.org/spec/vta/contexts/list/1.0#response.",
///  "type": "object",
///  "required": [
///    "contexts"
///  ],
///  "properties": {
///    "contexts": {
///      "description": "Contexts the caller may access, in maintainer-defined order. An empty array means the caller can reach none — which is a successful answer, and is not distinguishable from a VTA that holds none. A caller needing that distinction wants vta/contexts/get on a known id, which answers notFound.",
///      "type": "array",
///      "items": {
///        "$ref": "#/definitions/ContextRecord"
///      }
///    },
///    "ext": {
///      "$ref": "#/definitions/Ext"
///    }
///  },
///  "additionalProperties": false,
///  "$anchor": "response"
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(deny_unknown_fields)]
pub struct Response {
    ///Contexts the caller may access, in maintainer-defined order. An empty array means the caller can reach none — which is a successful answer, and is not distinguishable from a VTA that holds none. A caller needing that distinction wants vta/contexts/get on a known id, which answers notFound.
    pub contexts: ::std::vec::Vec<ContextRecord>,
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub ext: ::std::option::Option<Ext>,
}
impl crate::Payload for Payload {
    const TYPE_URI: &'static str = "https://trusttasks.org/spec/vta/contexts/list/1.0";
    const IS_RECIPIENT_REQUIRED: bool = true;
    const PAYLOAD_SCHEMA: Option<&'static str> = Some(
        "{\n  \"$defs\": {\n    \"ContextRecord\": {\n      \"additionalProperties\": false,\n      \"description\": \"A context as the VTA holds it.\",\n      \"properties\": {\n        \"basePath\": {\n          \"description\": \"Resolved path from the root context, as the VTA derives it from the parent chain. Consumers MUST treat this as derived state: it is recomputed by the maintainer and is not independently settable.\",\n          \"type\": \"string\"\n        },\n        \"createdAt\": {\n          \"description\": \"RFC 3339.\",\n          \"format\": \"date-time\",\n          \"type\": \"string\"\n        },\n        \"description\": {\n          \"description\": \"Free-form description.\",\n          \"type\": \"string\"\n        },\n        \"did\": {\n          \"description\": \"DID this context acts as, when one has been assigned. Absent means the context has no identity of its own yet — not that it has been denied one.\",\n          \"type\": \"string\"\n        },\n        \"ext\": {\n          \"$ref\": \"#/$defs/Ext\"\n        },\n        \"id\": {\n          \"description\": \"Context id. For a nested context this is the full path (`parent/leaf`), not the leaf alone — an ACL scope naming this context must use this value verbatim.\",\n          \"minLength\": 1,\n          \"type\": \"string\"\n        },\n        \"name\": {\n          \"description\": \"Human-readable name. Operator-facing only; carries no authorization meaning, and two contexts may share a name.\",\n          \"minLength\": 1,\n          \"type\": \"string\"\n        },\n        \"parent\": {\n          \"description\": \"Id of the context this one nests under. Absent for a top-level context. Authority granted at a parent reaches its children, so this member is load-bearing for anyone reasoning about scope.\",\n          \"type\": \"string\"\n        },\n        \"updatedAt\": {\n          \"description\": \"RFC 3339.\",\n          \"format\": \"date-time\",\n          \"type\": \"string\"\n        }\n      },\n      \"required\": [\n        \"id\",\n        \"name\",\n        \"basePath\",\n        \"createdAt\",\n        \"updatedAt\"\n      ],\n      \"title\": \"ContextRecord\",\n      \"type\": \"object\"\n    },\n    \"Ext\": {\n      \"additionalProperties\": true,\n      \"description\": \"Vendor-namespaced extension object per SPEC.md §4.5.1. Each immediate key MUST be a reverse-DNS namespace; structure under each namespace is opaque to the framework.\",\n      \"minProperties\": 1,\n      \"propertyNames\": {\n        \"pattern\": \"^[a-z][a-z0-9-]*(\\\\.[a-z0-9-]+)+$\"\n      },\n      \"title\": \"Ext\",\n      \"type\": \"object\"\n    },\n    \"Response\": {\n      \"$anchor\": \"response\",\n      \"additionalProperties\": false,\n      \"description\": \"Success response to vta/contexts/list. Type https://trusttasks.org/spec/vta/contexts/list/1.0#response.\",\n      \"properties\": {\n        \"contexts\": {\n          \"description\": \"Contexts the caller may access, in maintainer-defined order. An empty array means the caller can reach none — which is a successful answer, and is not distinguishable from a VTA that holds none. A caller needing that distinction wants vta/contexts/get on a known id, which answers notFound.\",\n          \"items\": {\n            \"$ref\": \"#/$defs/ContextRecord\"\n          },\n          \"type\": \"array\"\n        },\n        \"ext\": {\n          \"$ref\": \"#/$defs/Ext\"\n        }\n      },\n      \"required\": [\n        \"contexts\"\n      ],\n      \"title\": \"VTA Contexts List — response payload\",\n      \"type\": \"object\"\n    }\n  },\n  \"$id\": \"https://trusttasks.org/spec/vta/contexts/list/1.0\",\n  \"$schema\": \"https://json-schema.org/draft/2020-12/schema\",\n  \"additionalProperties\": false,\n  \"description\": \"Request payload for vta/contexts/list. Takes no filters: the result is already narrowed to what the caller may reach.\",\n  \"properties\": {\n    \"ext\": {\n      \"$ref\": \"#/$defs/Ext\"\n    }\n  },\n  \"title\": \"VTA Contexts List — payload\",\n  \"type\": \"object\"\n}\n",
    );
}
impl crate::Payload for Response {
    const TYPE_URI: &'static str = "https://trusttasks.org/spec/vta/contexts/list/1.0#response";
    const IS_RECIPIENT_REQUIRED: bool = true;
    const PAYLOAD_SCHEMA: Option<&'static str> = Some(
        "{\n  \"$defs\": {\n    \"ContextRecord\": {\n      \"additionalProperties\": false,\n      \"description\": \"A context as the VTA holds it.\",\n      \"properties\": {\n        \"basePath\": {\n          \"description\": \"Resolved path from the root context, as the VTA derives it from the parent chain. Consumers MUST treat this as derived state: it is recomputed by the maintainer and is not independently settable.\",\n          \"type\": \"string\"\n        },\n        \"createdAt\": {\n          \"description\": \"RFC 3339.\",\n          \"format\": \"date-time\",\n          \"type\": \"string\"\n        },\n        \"description\": {\n          \"description\": \"Free-form description.\",\n          \"type\": \"string\"\n        },\n        \"did\": {\n          \"description\": \"DID this context acts as, when one has been assigned. Absent means the context has no identity of its own yet — not that it has been denied one.\",\n          \"type\": \"string\"\n        },\n        \"ext\": {\n          \"$ref\": \"#/$defs/Ext\"\n        },\n        \"id\": {\n          \"description\": \"Context id. For a nested context this is the full path (`parent/leaf`), not the leaf alone — an ACL scope naming this context must use this value verbatim.\",\n          \"minLength\": 1,\n          \"type\": \"string\"\n        },\n        \"name\": {\n          \"description\": \"Human-readable name. Operator-facing only; carries no authorization meaning, and two contexts may share a name.\",\n          \"minLength\": 1,\n          \"type\": \"string\"\n        },\n        \"parent\": {\n          \"description\": \"Id of the context this one nests under. Absent for a top-level context. Authority granted at a parent reaches its children, so this member is load-bearing for anyone reasoning about scope.\",\n          \"type\": \"string\"\n        },\n        \"updatedAt\": {\n          \"description\": \"RFC 3339.\",\n          \"format\": \"date-time\",\n          \"type\": \"string\"\n        }\n      },\n      \"required\": [\n        \"id\",\n        \"name\",\n        \"basePath\",\n        \"createdAt\",\n        \"updatedAt\"\n      ],\n      \"title\": \"ContextRecord\",\n      \"type\": \"object\"\n    },\n    \"Ext\": {\n      \"additionalProperties\": true,\n      \"description\": \"Vendor-namespaced extension object per SPEC.md §4.5.1. Each immediate key MUST be a reverse-DNS namespace; structure under each namespace is opaque to the framework.\",\n      \"minProperties\": 1,\n      \"propertyNames\": {\n        \"pattern\": \"^[a-z][a-z0-9-]*(\\\\.[a-z0-9-]+)+$\"\n      },\n      \"title\": \"Ext\",\n      \"type\": \"object\"\n    },\n    \"Response\": {\n      \"$anchor\": \"response\",\n      \"additionalProperties\": false,\n      \"description\": \"Success response to vta/contexts/list. Type https://trusttasks.org/spec/vta/contexts/list/1.0#response.\",\n      \"properties\": {\n        \"contexts\": {\n          \"description\": \"Contexts the caller may access, in maintainer-defined order. An empty array means the caller can reach none — which is a successful answer, and is not distinguishable from a VTA that holds none. A caller needing that distinction wants vta/contexts/get on a known id, which answers notFound.\",\n          \"items\": {\n            \"$ref\": \"#/$defs/ContextRecord\"\n          },\n          \"type\": \"array\"\n        },\n        \"ext\": {\n          \"$ref\": \"#/$defs/Ext\"\n        }\n      },\n      \"required\": [\n        \"contexts\"\n      ],\n      \"title\": \"VTA Contexts List — response payload\",\n      \"type\": \"object\"\n    }\n  },\n  \"$ref\": \"#/$defs/Response\",\n  \"$schema\": \"https://json-schema.org/draft/2020-12/schema\"\n}\n",
    );
}
#[cfg(test)]
mod conformance {
    //! Round-trip tests harvested from the spec's `spec.md`,
    //! plus a `rejects_invalid_examples` test for any fixtures
    //! in `payload.invalid-examples.json` (validate feature).
    #[test]
    fn request_example_1() {
        const JSON: &str = "{\n  \"id\": \"6f1a9d2c-4c1e-4f0e-9c1a-2b7d5e0f3a11\",\n  \"type\": \"https://trusttasks.org/spec/vta/contexts/list/1.0\",\n  \"issuer\": \"did:key:z6MkOperator\",\n  \"recipient\": \"did:web:vta.example\",\n  \"issuedAt\": \"2026-08-19T09:00:00Z\",\n  \"payload\": {}\n}\n";
        let doc: crate::TrustTask<super::Payload> =
            serde_json::from_str(JSON).expect("deserialize request example");
        let rendered = serde_json::to_value(&doc).expect("re-serialize");
        let expected: serde_json::Value = serde_json::from_str(JSON).expect("re-parse expected");
        assert_eq!(rendered, expected, "request example failed round-trip");
    }
    #[test]
    fn response_example_1() {
        const JSON: &str = "{\n  \"id\": \"d3b2c1a0-8e7f-4a6b-9c5d-1e2f3a4b5c6d\",\n  \"type\": \"https://trusttasks.org/spec/vta/contexts/list/1.0#response\",\n  \"issuer\": \"did:web:vta.example\",\n  \"recipient\": \"did:key:z6MkOperator\",\n  \"issuedAt\": \"2026-08-19T09:00:01Z\",\n  \"threadId\": \"6f1a9d2c-4c1e-4f0e-9c1a-2b7d5e0f3a11\",\n  \"payload\": {\n    \"contexts\": [\n      {\n        \"id\": \"personal\",\n        \"name\": \"Personal\",\n        \"did\": \"did:webvh:QmScid:example.com\",\n        \"basePath\": \"personal\",\n        \"createdAt\": \"2026-01-04T10:00:00Z\",\n        \"updatedAt\": \"2026-07-19T14:22:00Z\"\n      },\n      {\n        \"id\": \"personal/banking\",\n        \"name\": \"Banking\",\n        \"parent\": \"personal\",\n        \"basePath\": \"personal/banking\",\n        \"createdAt\": \"2026-03-11T08:30:00Z\",\n        \"updatedAt\": \"2026-03-11T08:30:00Z\"\n      }\n    ]\n  }\n}\n";
        let doc: crate::TrustTask<super::Response> =
            serde_json::from_str(JSON).expect("deserialize response example");
        let rendered = serde_json::to_value(&doc).expect("re-serialize");
        let expected: serde_json::Value = serde_json::from_str(JSON).expect("re-parse expected");
        assert_eq!(rendered, expected, "response example failed round-trip");
    }
}