feat: add fixture import harness and conformance test framework for BitVid parity cases

tests/conformance/bitvid-fixtures.test.js

@@ -0,0 +1,47 @@
+// Test harness for BitVid parity cases
+import { describe, it, expect } from "vitest";
+
+// BitVid parity characterization cases
+const BITVID_CHARACTERIZATION_CASES = [
+  "personal-block-precedence",
+  "user-deny",
+  "event-deny",
+  "address-deny",
+  "allowlist-miss",
+  "protected-target",
+  "trusted-report-threshold-reached",
+  "duplicate-reporter-dedupe",
+  "blocked-reporter-ignored",
+  "trusted-mute-below-threshold",
+  "trusted-mute-at-threshold",
+  "expired-trusted-mute",
+  "viewer-override",
+  "author-override",
+  "cache-fallback-effective",
+  "report-category-thresholds",
+  "mute-aggregation-rules",
+  "hide-vs-restrict-vs-downrank",
+  "moderation-decorator-fields"
+];
+
+describe("BitVid parity characterization", () => {
+  // This suite will grow as we add real fixtures
+  // For now, just ensure the harness loads correctly
+  
+  it("has a list of characterization cases", () => {
+    expect(Array.isArray(BITVID_CHARACTERIZATION_CASES)).toBe(true);
+    expect(BITVID_CHARACTERIZATION_CASES.length).toBe(19);
+  });
+  
+  // Placeholder for when we have real fixtures
+  describe.skip("trusted-report-threshold-reached", () => {
+    it("should hide targets with sufficient trusted reports", async () => {
+      // Load fixture
+      // const fixture = await import("../../fixtures/bitvid/trusted-report-threshold.fixture.js");
+      // Run through evaluator
+      // const decision = evaluate(fixture.state, fixture.target);
+      // Compare to expectation
+      // expect(decision).toEqual(fixture.expectation);
+    });
+  });
+});