tap-msg 0.7.0

Core message processing library for the Transaction Authorization Protocol
Documentation 
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//! Tests for TAIP-7 policy implementations.

use tap_msg::message::{
    Agent, Policy, RequireAuthorization, RequirePresentation, RequireProofOfControl,
    TapMessageBody, TapMessageTrait, UpdatePolicies,
};

/// Test creating an agent with policies
#[test]
fn test_agent_with_policies() {
    // Create a policy
    let auth_policy = RequireAuthorization {
        from: Some(vec!["did:example:alice".to_string()]),
        from_role: None,
        from_agent: None,
        purpose: Some("Authorization required from Alice".to_string()),
    };

    // Create the agent with the policy
    let agent = Agent::new("did:example:bob", "beneficiary", "did:example:bob")
        .with_policies(vec![Policy::RequireAuthorization(auth_policy)]);

    // Verify the policy is correctly included
    assert!(agent.policies.is_some());
    assert_eq!(agent.policies.as_ref().unwrap().len(), 1);

    // Check that we can access the policy
    if let Some(ref policies) = agent.policies {
        if let Policy::RequireAuthorization(policy) = &policies[0] {
            assert_eq!(policy.from.as_ref().unwrap()[0], "did:example:alice");
            assert_eq!(
                policy.purpose.as_ref().unwrap(),
                "Authorization required from Alice"
            );
        } else {
            panic!("Wrong policy type");
        }
    }
}

/// Test creating UpdatePolicies message
#[test]
fn test_update_policies() {
    // Create a presentation policy
    let presentation_policy = RequirePresentation {
        context: Some(vec!["https://www.w3.org/2018/credentials/v1".to_string()]),
        from: Some(vec!["did:example:bob".to_string()]),
        from_role: None,
        from_agent: None,
        about_party: Some("originator".to_string()),
        about_agent: None,
        purpose: Some("Please provide KYC credentials".to_string()),
        presentation_definition: Some("https://example.com/presentations/kyc".to_string()),
        credentials: None,
    };

    // Create the UpdatePolicies message
    let update = UpdatePolicies {
        transaction_id: "transfer_12345".to_string(),
        policies: vec![Policy::RequirePresentation(presentation_policy)],
    };

    // Check the message type
    assert_eq!(
        <UpdatePolicies as TapMessageBody>::message_type(),
        "https://tap.rsvp/schema/1.0#UpdatePolicies"
    );

    // Validate the message
    assert!(TapMessageBody::validate(&update).is_ok());
}

/// Test validation of UpdatePolicies message
#[test]
fn test_update_policies_validation() {
    // Create a proof of control policy
    let proof_policy = RequireProofOfControl {
        from: Some(vec!["did:example:dave".to_string()]),
        from_role: None,
        from_agent: None,
        address_id: "eip155:1:0x1234567890123456789012345678901234567890".to_string(),
        purpose: Some("Please prove control of your account".to_string()),
    };

    // Test with empty transfer_id
    let invalid_update = UpdatePolicies {
        transaction_id: "".to_string(),
        policies: vec![Policy::RequireProofOfControl(proof_policy.clone())],
    };
    assert!(TapMessageBody::validate(&invalid_update).is_err());

    // Test with empty policies
    let invalid_update = UpdatePolicies {
        transaction_id: "transfer_12345".to_string(),
        policies: vec![],
    };
    assert!(TapMessageBody::validate(&invalid_update).is_err());

    // Valid message should pass validation
    let valid_update = UpdatePolicies {
        transaction_id: "transfer_12345".to_string(),
        policies: vec![Policy::RequireProofOfControl(proof_policy)],
    };

    assert!(TapMessageBody::validate(&valid_update).is_ok());
}

/// Test all policy types
#[test]
fn test_all_policy_types() {
    // Create authorization policy
    let auth_policy = RequireAuthorization::default();
    assert_eq!(auth_policy.from, None);
    assert_eq!(auth_policy.from_role, None);
    assert_eq!(auth_policy.from_agent, None);
    assert_eq!(auth_policy.purpose, None);

    // Create presentation policy
    let presentation_policy = RequirePresentation::default();
    assert_eq!(presentation_policy.context, None);
    assert_eq!(presentation_policy.from, None);
    assert_eq!(presentation_policy.from_role, None);
    assert_eq!(presentation_policy.from_agent, None);
    assert_eq!(presentation_policy.about_party, None);
    assert_eq!(presentation_policy.about_agent, None);
    assert_eq!(presentation_policy.purpose, None);
    assert_eq!(presentation_policy.presentation_definition, None);
    assert_eq!(presentation_policy.credentials, None);

    // Create proof of control policy
    let proof_policy = RequireProofOfControl::default();
    assert_eq!(proof_policy.from, None);
    assert_eq!(proof_policy.from_role, None);
    assert_eq!(proof_policy.from_agent, None);
    assert_eq!(proof_policy.address_id, "");
    assert_eq!(proof_policy.purpose, None);

    // Create policies
    let policies = [
        Policy::RequireAuthorization(auth_policy),
        Policy::RequirePresentation(presentation_policy),
        Policy::RequireProofOfControl(proof_policy),
    ];

    // Check the content of each policy type
    if let Policy::RequireAuthorization(policy) = &policies[0] {
        assert_eq!(policy.from, None);
        assert_eq!(policy.purpose, None);
    } else {
        panic!("Expected RequireAuthorization policy");
    }

    if let Policy::RequirePresentation(policy) = &policies[1] {
        assert_eq!(policy.context, None);
        assert_eq!(policy.from, None);
        assert_eq!(policy.purpose, None);
    } else {
        panic!("Expected RequirePresentation policy");
    }

    if let Policy::RequireProofOfControl(policy) = &policies[2] {
        assert_eq!(policy.from, None);
        assert_eq!(policy.address_id, "");
    } else {
        panic!("Expected RequireProofOfControl policy");
    }
}

/// Test DIDComm message conversion for UpdatePolicies
#[test]
fn test_update_policies_didcomm_conversion() {
    // Create a presentation policy
    let presentation_policy = RequirePresentation {
        context: Some(vec!["https://www.w3.org/2018/credentials/v1".to_string()]),
        from: Some(vec!["did:example:bob".to_string()]),
        from_role: None,
        from_agent: None,
        about_party: Some("originator".to_string()),
        about_agent: None,
        purpose: Some("Please provide KYC credentials".to_string()),
        presentation_definition: Some("https://example.com/presentations/kyc".to_string()),
        credentials: None,
    };

    // Create a proof of control policy
    let proof_policy = RequireProofOfControl {
        from: Some(vec!["did:example:charlie".to_string()]),
        from_role: None,
        from_agent: None,
        address_id: "eip155:1:0x1234567890123456789012345678901234567890".to_string(),
        purpose: Some("Please prove control of your account".to_string()),
    };

    // Create the UpdatePolicies message with multiple policies
    let original_update = UpdatePolicies {
        transaction_id: "transfer_12345".to_string(),
        policies: vec![
            Policy::RequirePresentation(presentation_policy),
            Policy::RequireProofOfControl(proof_policy),
        ],
    };

    // Convert to DIDComm message
    let didcomm_message = original_update
        .to_didcomm("did:example:sender")
        .expect("Failed to convert to DIDComm");

    // Debug: Print the actual body of the DIDComm message
    println!(
        "DIDComm message body: {}",
        serde_json::to_string_pretty(&didcomm_message.body).unwrap()
    );

    // Check that the message type is correctly set
    assert_eq!(
        didcomm_message.get_tap_type(),
        Some("https://tap.rsvp/schema/1.0#UpdatePolicies".to_string())
    );

    // Convert back from DIDComm
    let roundtrip_update =
        UpdatePolicies::from_didcomm(&didcomm_message).expect("Failed to convert from DIDComm");

    // Check that the message data is preserved
    assert_eq!(
        roundtrip_update.transaction_id,
        original_update.transaction_id
    );
    assert_eq!(
        roundtrip_update.policies.len(),
        original_update.policies.len()
    );

    // Check first policy is presentation policy
    match &roundtrip_update.policies[0] {
        Policy::RequirePresentation(policy) => {
            assert_eq!(policy.about_party.as_ref().unwrap(), "originator");
            assert_eq!(
                policy.purpose.as_ref().unwrap(),
                "Please provide KYC credentials"
            );
        }
        _ => panic!("Expected RequirePresentation policy"),
    }

    // Check second policy is proof of control policy
    match &roundtrip_update.policies[1] {
        Policy::RequireProofOfControl(policy) => {
            assert_eq!(
                policy.address_id,
                "eip155:1:0x1234567890123456789012345678901234567890"
            );
            assert_eq!(policy.from.as_ref().unwrap()[0], "did:example:charlie");
        }
        _ => panic!("Expected RequireProofOfControl policy"),
    }
}