trust-tasks-rs 0.2.14

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: `task-consent/decision`. Version: `0.1`.
#[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())
        }
    }
}
///The approver's answer. `deny` aborts the pending request; a subsequent submit of the same task starts a fresh one.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "title": "Decision",
///  "description": "The approver's answer. `deny` aborts the pending request; a subsequent submit of the same task starts a fresh one.",
///  "type": "string",
///  "enum": [
///    "approve",
///    "deny"
///  ]
///}
/// ```
/// </details>
#[derive(
    ::serde::Deserialize,
    ::serde::Serialize,
    Clone,
    Copy,
    Debug,
    Eq,
    Hash,
    Ord,
    PartialEq,
    PartialOrd,
)]
pub enum Decision {
    #[serde(rename = "approve")]
    Approve,
    #[serde(rename = "deny")]
    Deny,
}
impl ::std::fmt::Display for Decision {
    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
        match *self {
            Self::Approve => f.write_str("approve"),
            Self::Deny => f.write_str("deny"),
        }
    }
}
impl ::std::str::FromStr for Decision {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        match value {
            "approve" => Ok(Self::Approve),
            "deny" => Ok(Self::Deny),
            _ => Err("invalid value".into()),
        }
    }
}
impl ::std::convert::TryFrom<&str> for Decision {
    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 Decision {
    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 Decision {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
///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())
            })
    }
}
///An enrolled approver authorizes (or refuses) one pending privileged task, bound to the exact payload it was shown. The proof on this document — not the transport session that carried it — is the authorization.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "$id": "https://trusttasks.org/spec/task-consent/decision/0.1",
///  "title": "Payload",
///  "description": "An enrolled approver authorizes (or refuses) one pending privileged task, bound to the exact payload it was shown. The proof on this document — not the transport session that carried it — is the authorization.",
///  "type": "object",
///  "required": [
///    "challenge",
///    "decision",
///    "payloadDigest"
///  ],
///  "properties": {
///    "challenge": {
///      "description": "Echoes the task-consent/request this decision answers, binding it to that one pending request. An executor MUST consume the challenge at execution rather than on receipt of this decision: a decision authorizes exactly one execution, and consuming it earlier lets an executor's own retry legitimately replay it.",
///      "type": "string",
///      "minLength": 16
///    },
///    "decision": {
///      "$ref": "#/definitions/Decision"
///    },
///    "ext": {
///      "$ref": "#/definitions/Ext"
///    },
///    "payloadDigest": {
///      "description": "Echoes the digest of the task being authorized. The executor re-derives it from the payload it is about to execute and refuses on mismatch — this is what makes the approved payload the executed payload, cryptographically rather than by convention.",
///      "type": "string"
///    },
///    "reason": {
///      "description": "OPTIONAL human-facing note, most useful on a `deny`.",
///      "type": "string"
///    }
///  },
///  "additionalProperties": false
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(deny_unknown_fields)]
pub struct Payload {
    ///Echoes the task-consent/request this decision answers, binding it to that one pending request. An executor MUST consume the challenge at execution rather than on receipt of this decision: a decision authorizes exactly one execution, and consuming it earlier lets an executor's own retry legitimately replay it.
    pub challenge: PayloadChallenge,
    pub decision: Decision,
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub ext: ::std::option::Option<Ext>,
    ///Echoes the digest of the task being authorized. The executor re-derives it from the payload it is about to execute and refuses on mismatch — this is what makes the approved payload the executed payload, cryptographically rather than by convention.
    #[serde(rename = "payloadDigest")]
    pub payload_digest: ::std::string::String,
    ///OPTIONAL human-facing note, most useful on a `deny`.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub reason: ::std::option::Option<::std::string::String>,
}
///Echoes the task-consent/request this decision answers, binding it to that one pending request. An executor MUST consume the challenge at execution rather than on receipt of this decision: a decision authorizes exactly one execution, and consuming it earlier lets an executor's own retry legitimately replay it.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "Echoes the task-consent/request this decision answers, binding it to that one pending request. An executor MUST consume the challenge at execution rather than on receipt of this decision: a decision authorizes exactly one execution, and consuming it earlier lets an executor's own retry legitimately replay it.",
///  "type": "string",
///  "minLength": 16
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct PayloadChallenge(::std::string::String);
impl ::std::ops::Deref for PayloadChallenge {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<PayloadChallenge> for ::std::string::String {
    fn from(value: PayloadChallenge) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for PayloadChallenge {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() < 16usize {
            return Err("shorter than 16 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for PayloadChallenge {
    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 PayloadChallenge {
    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 PayloadChallenge {
    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 PayloadChallenge {
    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())
            })
    }
}
///Acknowledgement of the recorded decision, and whether the approval threshold is now met.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "title": "Response",
///  "description": "Acknowledgement of the recorded decision, and whether the approval threshold is now met.",
///  "type": "object",
///  "required": [
///    "payloadDigest",
///    "status"
///  ],
///  "properties": {
///    "approvals": {
///      "description": "Distinct approvals recorded so far.",
///      "type": "integer",
///      "minimum": 0.0
///    },
///    "ext": {
///      "$ref": "#/definitions/Ext"
///    },
///    "needed": {
///      "description": "Distinct approvals required. Present when status is `pending`.",
///      "type": "integer",
///      "minimum": 1.0
///    },
///    "payloadDigest": {
///      "description": "The digest this decision concerned.",
///      "type": "string"
///    },
///    "status": {
///      "description": "`granted` = the threshold is met and the requester's re-submit will now execute. `pending` = the approval was recorded but more are needed. `denied` = the request was aborted.",
///      "type": "string",
///      "enum": [
///        "granted",
///        "pending",
///        "denied"
///      ]
///    }
///  },
///  "additionalProperties": false,
///  "$anchor": "response"
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(deny_unknown_fields)]
pub struct Response {
    ///Distinct approvals recorded so far.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub approvals: ::std::option::Option<u64>,
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub ext: ::std::option::Option<Ext>,
    ///Distinct approvals required. Present when status is `pending`.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub needed: ::std::option::Option<::std::num::NonZeroU64>,
    ///The digest this decision concerned.
    #[serde(rename = "payloadDigest")]
    pub payload_digest: ::std::string::String,
    ///`granted` = the threshold is met and the requester's re-submit will now execute. `pending` = the approval was recorded but more are needed. `denied` = the request was aborted.
    pub status: ResponseStatus,
}
///`granted` = the threshold is met and the requester's re-submit will now execute. `pending` = the approval was recorded but more are needed. `denied` = the request was aborted.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "`granted` = the threshold is met and the requester's re-submit will now execute. `pending` = the approval was recorded but more are needed. `denied` = the request was aborted.",
///  "type": "string",
///  "enum": [
///    "granted",
///    "pending",
///    "denied"
///  ]
///}
/// ```
/// </details>
#[derive(
    ::serde::Deserialize,
    ::serde::Serialize,
    Clone,
    Copy,
    Debug,
    Eq,
    Hash,
    Ord,
    PartialEq,
    PartialOrd,
)]
pub enum ResponseStatus {
    #[serde(rename = "granted")]
    Granted,
    #[serde(rename = "pending")]
    Pending,
    #[serde(rename = "denied")]
    Denied,
}
impl ::std::fmt::Display for ResponseStatus {
    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
        match *self {
            Self::Granted => f.write_str("granted"),
            Self::Pending => f.write_str("pending"),
            Self::Denied => f.write_str("denied"),
        }
    }
}
impl ::std::str::FromStr for ResponseStatus {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        match value {
            "granted" => Ok(Self::Granted),
            "pending" => Ok(Self::Pending),
            "denied" => Ok(Self::Denied),
            _ => Err("invalid value".into()),
        }
    }
}
impl ::std::convert::TryFrom<&str> for ResponseStatus {
    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 ResponseStatus {
    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 ResponseStatus {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl crate::Payload for Payload {
    const TYPE_URI: &'static str = "https://trusttasks.org/spec/task-consent/decision/0.1";
    const IS_PROOF_REQUIRED: bool = true;
    const IS_RECIPIENT_REQUIRED: bool = true;
}
impl crate::Payload for Response {
    const TYPE_URI: &'static str = "https://trusttasks.org/spec/task-consent/decision/0.1#response";
    const IS_PROOF_REQUIRED: bool = true;
    const IS_RECIPIENT_REQUIRED: bool = true;
}
#[cfg(feature = "validate")]
impl crate::validate::ValidatedPayload for Payload {
    const SCHEMA_JSON: &'static str = "{\n  \"$defs\": {\n    \"Decision\": {\n      \"description\": \"The approver's answer. `deny` aborts the pending request; a subsequent submit of the same task starts a fresh one.\",\n      \"enum\": [\n        \"approve\",\n        \"deny\"\n      ],\n      \"title\": \"Decision\",\n      \"type\": \"string\"\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\": \"Acknowledgement of the recorded decision, and whether the approval threshold is now met.\",\n      \"properties\": {\n        \"approvals\": {\n          \"description\": \"Distinct approvals recorded so far.\",\n          \"minimum\": 0,\n          \"type\": \"integer\"\n        },\n        \"ext\": {\n          \"$ref\": \"#/$defs/Ext\"\n        },\n        \"needed\": {\n          \"description\": \"Distinct approvals required. Present when status is `pending`.\",\n          \"minimum\": 1,\n          \"type\": \"integer\"\n        },\n        \"payloadDigest\": {\n          \"description\": \"The digest this decision concerned.\",\n          \"type\": \"string\"\n        },\n        \"status\": {\n          \"description\": \"`granted` = the threshold is met and the requester's re-submit will now execute. `pending` = the approval was recorded but more are needed. `denied` = the request was aborted.\",\n          \"enum\": [\n            \"granted\",\n            \"pending\",\n            \"denied\"\n          ],\n          \"type\": \"string\"\n        }\n      },\n      \"required\": [\n        \"status\",\n        \"payloadDigest\"\n      ],\n      \"title\": \"Task Consent Decision — response payload\",\n      \"type\": \"object\"\n    }\n  },\n  \"$id\": \"https://trusttasks.org/spec/task-consent/decision/0.1\",\n  \"$schema\": \"https://json-schema.org/draft/2020-12/schema\",\n  \"additionalProperties\": false,\n  \"description\": \"An enrolled approver authorizes (or refuses) one pending privileged task, bound to the exact payload it was shown. The proof on this document — not the transport session that carried it — is the authorization.\",\n  \"properties\": {\n    \"challenge\": {\n      \"description\": \"Echoes the task-consent/request this decision answers, binding it to that one pending request. An executor MUST consume the challenge at execution rather than on receipt of this decision: a decision authorizes exactly one execution, and consuming it earlier lets an executor's own retry legitimately replay it.\",\n      \"minLength\": 16,\n      \"type\": \"string\"\n    },\n    \"decision\": {\n      \"$ref\": \"#/$defs/Decision\"\n    },\n    \"ext\": {\n      \"$ref\": \"#/$defs/Ext\"\n    },\n    \"payloadDigest\": {\n      \"description\": \"Echoes the digest of the task being authorized. The executor re-derives it from the payload it is about to execute and refuses on mismatch — this is what makes the approved payload the executed payload, cryptographically rather than by convention.\",\n      \"type\": \"string\"\n    },\n    \"reason\": {\n      \"description\": \"OPTIONAL human-facing note, most useful on a `deny`.\",\n      \"type\": \"string\"\n    }\n  },\n  \"required\": [\n    \"challenge\",\n    \"payloadDigest\",\n    \"decision\"\n  ],\n  \"title\": \"Task Consent Decision — payload\",\n  \"type\": \"object\"\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\": \"urn:uuid:c4a90f18-2de6-4b73-9f05-8a1c6b3e27d9\",\n  \"type\": \"https://trusttasks.org/spec/task-consent/decision/0.1\",\n  \"issuer\": \"did:key:z6MkApproverPhoneExample\",\n  \"recipient\": \"did:key:z6MkExecutorVtaExample\",\n  \"issuedAt\": \"2026-07-13T09:43:18Z\",\n  \"payload\": {\n    \"challenge\": \"9c1f4b7a2e6d80f35a4c9b1e7d2f6083\",\n    \"payloadDigest\": \"3b0c7f1d9e2a5648c1f30b7ae4d2986153ca0f7b8d41e6295af03c8bd71e4a62\",\n    \"decision\": \"approve\"\n  },\n  \"proof\": {\n    \"type\": \"DataIntegrityProof\",\n    \"cryptosuite\": \"eddsa-jcs-2022\",\n    \"created\": \"2026-07-13T09:43:18Z\",\n    \"verificationMethod\": \"did:key:z6MkApproverPhoneExample#z6MkApproverPhoneExample\",\n    \"proofPurpose\": \"assertionMethod\",\n    \"proofValue\": \"z2QpLmExampleProofValueForTaskConsentDecision\"\n  }\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\": \"urn:uuid:7b3f8d21-5c04-4e19-a6d8-2f9e1b0c4a63\",\n  \"type\": \"https://trusttasks.org/spec/task-consent/decision/0.1#response\",\n  \"issuer\": \"did:key:z6MkExecutorVtaExample\",\n  \"recipient\": \"did:key:z6MkApproverPhoneExample\",\n  \"issuedAt\": \"2026-07-13T09:43:19Z\",\n  \"payload\": {\n    \"status\": \"granted\",\n    \"payloadDigest\": \"3b0c7f1d9e2a5648c1f30b7ae4d2986153ca0f7b8d41e6295af03c8bd71e4a62\",\n    \"approvals\": 1\n  },\n  \"proof\": {\n    \"type\": \"DataIntegrityProof\",\n    \"cryptosuite\": \"eddsa-jcs-2022\",\n    \"created\": \"2026-07-13T09:43:19Z\",\n    \"verificationMethod\": \"did:key:z6MkExecutorVtaExample#z6MkExecutorVtaExample\",\n    \"proofPurpose\": \"assertionMethod\",\n    \"proofValue\": \"z6TvNsExampleProofValueForTaskConsentDecisionResponse\"\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");
    }
    /// Each fixture in `payload.invalid-examples.json` MUST be
    /// rejected by at least one of: serde deserialization, or
    /// JSON-Schema validation under the `validate` feature. The
    /// fixture file documents the producer-side bug class that
    /// each payload exemplifies; this generated test pins it.
    #[cfg(feature = "validate")]
    #[test]
    fn rejects_invalid_examples() {
        use crate::validate::ValidatedPayload;
        let fixtures: &[(&str, &str)] = &[
            (
                "Missing payloadDigest — without it the decision authorizes nothing in particular.",
                "{\n  \"challenge\": \"9c1f4b7a2e6d80f35a4c9b1e7d2f6083\",\n  \"decision\": \"approve\"\n}",
            ),
            (
                "Missing challenge — the decision would not be bound to a single pending request.",
                "{\n  \"decision\": \"approve\",\n  \"payloadDigest\": \"3b0c7f1d9e2a5648c1f30b7ae4d2986153ca0f7b8d41e6295af03c8bd71e4a62\"\n}",
            ),
            (
                "Decision is not a member of the closed enum — silence, timeouts and dismissals are not assent.",
                "{\n  \"challenge\": \"9c1f4b7a2e6d80f35a4c9b1e7d2f6083\",\n  \"decision\": \"timeout\",\n  \"payloadDigest\": \"3b0c7f1d9e2a5648c1f30b7ae4d2986153ca0f7b8d41e6295af03c8bd71e4a62\"\n}",
            ),
            (
                "Boolean decision — the wire form is an explicit enum, so a missing or falsy value can never read as approval.",
                "{\n  \"challenge\": \"9c1f4b7a2e6d80f35a4c9b1e7d2f6083\",\n  \"decision\": true,\n  \"payloadDigest\": \"3b0c7f1d9e2a5648c1f30b7ae4d2986153ca0f7b8d41e6295af03c8bd71e4a62\"\n}",
            ),
            (
                "Challenge too short.",
                "{\n  \"challenge\": \"short\",\n  \"decision\": \"approve\",\n  \"payloadDigest\": \"3b0c7f1d9e2a5648c1f30b7ae4d2986153ca0f7b8d41e6295af03c8bd71e4a62\"\n}",
            ),
            (
                "Unknown property.",
                "{\n  \"approverSet\": \"operators\",\n  \"challenge\": \"9c1f4b7a2e6d80f35a4c9b1e7d2f6083\",\n  \"decision\": \"approve\",\n  \"payloadDigest\": \"3b0c7f1d9e2a5648c1f30b7ae4d2986153ca0f7b8d41e6295af03c8bd71e4a62\"\n}",
            ),
        ];
        for (i, (note, raw)) in fixtures.iter().enumerate() {
            let value: serde_json::Value = match serde_json::from_str(raw) {
                Ok(v) => v,
                Err(_) => continue,
            };
            let serde_ok = serde_json::from_value::<super::Payload>(value.clone()).is_ok();
            let schema_ok = super::Payload::validate_value(&value).is_ok();
            assert!(
                !(serde_ok && schema_ok),
                "invalid-example #{} ({:?}) was accepted by both serde and JSON Schema; \
                         the fixture's stated failure class is no longer caught:\n{}",
                i + 1,
                note,
                raw
            );
        }
    }
}