From a47d2f39b6a05ea303fcd791507c76832b835df0 Mon Sep 17 00:00:00 2001
From: devorun <130918800+devorun@users.noreply.github.com>
Date: Tue, 11 Aug 2026 12:40:35 +0300
Subject: [PATCH] test(vc): add tests for the credential verification errors

Cover the CredentialVerificationError hierarchy, default and custom
messages, and the detail/cause handling of RevocationCheckError and
UnsupportedCredentialStatusError, including that detail is kept out of
the error message.
---
 packages/vc/src/verification/errors.test.ts | 169 ++++++++++++++++++++
 1 file changed, 169 insertions(+)
 create mode 100644 packages/vc/src/verification/errors.test.ts

diff --git a/packages/vc/src/verification/errors.test.ts b/packages/vc/src/verification/errors.test.ts
new file mode 100644
index 0000000..2382368
--- /dev/null
+++ b/packages/vc/src/verification/errors.test.ts
@@ -0,0 +1,169 @@
+import { describe, expect, it } from "vitest"
+
+import {
+  CredentialExpiredError,
+  CredentialRevokedError,
+  CredentialVerificationError,
+  InvalidControllerClaimError,
+  InvalidCredentialError,
+  InvalidCredentialSubjectError,
+  InvalidProofError,
+  RevocationCheckError,
+  UnsupportedCredentialStatusError,
+  UnsupportedCredentialTypeError,
+  UnsupportedProofTypeError,
+  UntrustedIssuerError,
+} from "./errors"
+
+interface ErrorCase {
+  name: string
+  create: (message?: string) => CredentialVerificationError
+  defaultMessage: string
+  expectedName?: string
+}
+
+const cases: ErrorCase[] = [
+  {
+    name: "InvalidCredentialError",
+    create: (message) => new InvalidCredentialError(message),
+    defaultMessage: "Invalid credential",
+    expectedName: "InvalidCredentialError",
+  },
+  {
+    name: "InvalidControllerClaimError",
+    create: (message) => new InvalidControllerClaimError(message),
+    defaultMessage: "Invalid controller claim",
+    expectedName: "InvalidControllerClaimError",
+  },
+  {
+    name: "InvalidCredentialSubjectError",
+    create: (message) => new InvalidCredentialSubjectError(message),
+    defaultMessage: "Invalid credential subject",
+    expectedName: "InvalidCredentialSubjectError",
+  },
+  {
+    name: "UnsupportedProofTypeError",
+    create: (message) => new UnsupportedProofTypeError(message),
+    defaultMessage: "Unsupported proof type",
+  },
+  {
+    name: "InvalidProofError",
+    create: (message) => new InvalidProofError(message),
+    defaultMessage: "Invalid proof",
+  },
+  {
+    name: "CredentialExpiredError",
+    create: (message) => new CredentialExpiredError(message),
+    defaultMessage: "Credential is expired",
+  },
+  {
+    name: "CredentialRevokedError",
+    create: (message) => new CredentialRevokedError(message),
+    defaultMessage: "Credential is revoked",
+  },
+  {
+    name: "RevocationCheckError",
+    create: (message) => new RevocationCheckError(message),
+    defaultMessage: "Unable to determine credential revocation status",
+    expectedName: "RevocationCheckError",
+  },
+  {
+    name: "UnsupportedCredentialStatusError",
+    create: (message) => new UnsupportedCredentialStatusError(message),
+    defaultMessage: "Unsupported credential status",
+    expectedName: "UnsupportedCredentialStatusError",
+  },
+  {
+    name: "UntrustedIssuerError",
+    create: (message) => new UntrustedIssuerError(message),
+    defaultMessage: "Issuer is not a known trusted issuer",
+  },
+  {
+    name: "UnsupportedCredentialTypeError",
+    create: (message) => new UnsupportedCredentialTypeError(message),
+    defaultMessage: "Unsupported credential type",
+  },
+]
+
+const namedCases = cases.filter(
+  (errorCase): errorCase is ErrorCase & { expectedName: string } =>
+    errorCase.expectedName !== undefined,
+)
+
+describe("credential verification errors", () => {
+  describe.each(cases)("$name", ({ create, defaultMessage }) => {
+    it("extends CredentialVerificationError and Error", () => {
+      const error = create()
+      expect(error).toBeInstanceOf(CredentialVerificationError)
+      expect(error).toBeInstanceOf(Error)
+    })
+
+    it("uses its default message", () => {
+      expect(create().message).toBe(defaultMessage)
+    })
+
+    it("accepts a custom message", () => {
+      expect(create("Something went wrong").message).toBe(
+        "Something went wrong",
+      )
+    })
+  })
+
+  it.each(namedCases)("$name sets its name", ({ create, expectedName }) => {
+    expect(create().name).toBe(expectedName)
+  })
+
+  it("CredentialVerificationError is a plain Error subclass", () => {
+    const error = new CredentialVerificationError("boom")
+    expect(error).toBeInstanceOf(Error)
+    expect(error.message).toBe("boom")
+  })
+
+  describe("RevocationCheckError", () => {
+    it("has no detail by default", () => {
+      expect(new RevocationCheckError().detail).toBeUndefined()
+    })
+
+    it("stores the provided detail", () => {
+      const detail = "GET https://issuer.example.com/status/1 returned 500"
+      expect(new RevocationCheckError(undefined, { detail }).detail).toBe(
+        detail,
+      )
+    })
+
+    it("keeps detail out of the message", () => {
+      const detail = "GET https://issuer.example.com/status/1 returned 500"
+      const error = new RevocationCheckError(undefined, { detail })
+      expect(error.message).toBe(
+        "Unable to determine credential revocation status",
+      )
+      expect(error.message).not.toContain(detail)
+    })
+
+    it("propagates the cause", () => {
+      const cause = new Error("network down")
+      const error = new RevocationCheckError(undefined, { cause })
+      expect(error.cause).toBe(cause)
+    })
+  })
+
+  describe("UnsupportedCredentialStatusError", () => {
+    it("has no detail by default", () => {
+      expect(new UnsupportedCredentialStatusError().detail).toBeUndefined()
+    })
+
+    it("stores the provided detail", () => {
+      const detail = "UnknownStatusList2099"
+      expect(
+        new UnsupportedCredentialStatusError(undefined, { detail }).detail,
+      ).toBe(detail)
+    })
+
+    it("keeps detail out of the message", () => {
+      const detail = "UnknownStatusList2099"
+      const error = new UnsupportedCredentialStatusError(undefined, { detail })
+      expect(error.message).toBe("Unsupported credential status")
+      expect(error.message).not.toContain(detail)
+    })
+  })
+})