test: migrate suites to e2e coverage layout

src/agents/pi-embedded-helpers.isbillingerrormessage.e2e.test.ts

@@ -0,0 +1,67 @@
+import { describe, expect, it } from "vitest";
+import { isBillingErrorMessage } from "./pi-embedded-helpers.js";
+import { DEFAULT_AGENTS_FILENAME } from "./workspace.js";
+
+const _makeFile = (overrides: Partial<WorkspaceBootstrapFile>): WorkspaceBootstrapFile => ({
+  name: DEFAULT_AGENTS_FILENAME,
+  path: "/tmp/AGENTS.md",
+  content: "",
+  missing: false,
+  ...overrides,
+});
+describe("isBillingErrorMessage", () => {
+  it("matches credit / payment failures", () => {
+    const samples = [
+      "Your credit balance is too low to access the Anthropic API.",
+      "insufficient credits",
+      "Payment Required",
+      "HTTP 402 Payment Required",
+      "plans & billing",
+    ];
+    for (const sample of samples) {
+      expect(isBillingErrorMessage(sample)).toBe(true);
+    }
+  });
+  it("ignores unrelated errors", () => {
+    expect(isBillingErrorMessage("rate limit exceeded")).toBe(false);
+    expect(isBillingErrorMessage("invalid api key")).toBe(false);
+    expect(isBillingErrorMessage("context length exceeded")).toBe(false);
+  });
+  it("does not false-positive on issue IDs or text containing 402", () => {
+    const falsePositives = [
+      "Fixed issue CHE-402 in the latest release",
+      "See ticket #402 for details",
+      "ISSUE-402 has been resolved",
+      "Room 402 is available",
+      "Error code 403 was returned, not 402-related",
+      "The building at 402 Main Street",
+      "processed 402 records",
+      "402 items found in the database",
+      "port 402 is open",
+      "Use a 402 stainless bolt",
+      "Book a 402 room",
+      "There is a 402 near me",
+    ];
+    for (const sample of falsePositives) {
+      expect(isBillingErrorMessage(sample)).toBe(false);
+    }
+  });
+  it("still matches real HTTP 402 billing errors", () => {
+    const realErrors = [
+      "HTTP 402 Payment Required",
+      "status: 402",
+      "error code 402",
+      "http 402",
+      "status=402 payment required",
+      "got a 402 from the API",
+      "returned 402",
+      "received a 402 response",
+      '{"status":402,"type":"error"}',
+      '{"code":402,"message":"payment required"}',
+      '{"error":{"code":402,"message":"billing hard limit reached"}}',
+    ];
+    for (const sample of realErrors) {
+      expect(isBillingErrorMessage(sample)).toBe(true);
+    }
+  });
+});