test: migrate suites to e2e coverage layout

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

@@ -0,0 +1,31 @@
+import type { AgentMessage } from "@mariozechner/pi-agent-core";
+import { describe, expect, it } from "vitest";
+import { sanitizeGoogleTurnOrdering } 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("sanitizeGoogleTurnOrdering", () => {
+  it("prepends a synthetic user turn when history starts with assistant", () => {
+    const input = [
+      {
+        role: "assistant",
+        content: [{ type: "toolCall", id: "call_1", name: "exec", arguments: {} }],
+      },
+    ] satisfies AgentMessage[];
+
+    const out = sanitizeGoogleTurnOrdering(input);
+    expect(out[0]?.role).toBe("user");
+    expect(out[1]?.role).toBe("assistant");
+  });
+  it("is a no-op when history starts with user", () => {
+    const input = [{ role: "user", content: "hi" }] satisfies AgentMessage[];
+    const out = sanitizeGoogleTurnOrdering(input);
+    expect(out).toBe(input);
+  });
+});