refactor(src): split oversized modules

src/agents/pi-embedded-helpers.buildbootstrapcontextfiles.test.ts

@@ -0,0 +1,62 @@
+import { describe, expect, it } from "vitest";
+import {
+  buildBootstrapContextFiles,
+  DEFAULT_BOOTSTRAP_MAX_CHARS,
+} 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("buildBootstrapContextFiles", () => {
+  it("keeps missing markers", () => {
+    const files = [makeFile({ missing: true, content: undefined })];
+    expect(buildBootstrapContextFiles(files)).toEqual([
+      {
+        path: DEFAULT_AGENTS_FILENAME,
+        content: "[MISSING] Expected at: /tmp/AGENTS.md",
+      },
+    ]);
+  });
+  it("skips empty or whitespace-only content", () => {
+    const files = [makeFile({ content: "   \n  " })];
+    expect(buildBootstrapContextFiles(files)).toEqual([]);
+  });
+  it("truncates large bootstrap content", () => {
+    const head = `HEAD-${"a".repeat(600)}`;
+    const tail = `${"b".repeat(300)}-TAIL`;
+    const long = `${head}${tail}`;
+    const files = [makeFile({ name: "TOOLS.md", content: long })];
+    const warnings: string[] = [];
+    const maxChars = 200;
+    const expectedTailChars = Math.floor(maxChars * 0.2);
+    const [result] = buildBootstrapContextFiles(files, {
+      maxChars,
+      warn: (message) => warnings.push(message),
+    });
+    expect(result?.content).toContain(
+      "[...truncated, read TOOLS.md for full content...]",
+    );
+    expect(result?.content.length).toBeLessThan(long.length);
+    expect(result?.content.startsWith(long.slice(0, 120))).toBe(true);
+    expect(result?.content.endsWith(long.slice(-expectedTailChars))).toBe(true);
+    expect(warnings).toHaveLength(1);
+    expect(warnings[0]).toContain("TOOLS.md");
+    expect(warnings[0]).toContain("limit 200");
+  });
+  it("keeps content under the default limit", () => {
+    const long = "a".repeat(DEFAULT_BOOTSTRAP_MAX_CHARS - 10);
+    const files = [makeFile({ content: long })];
+    const [result] = buildBootstrapContextFiles(files);
+    expect(result?.content).toBe(long);
+    expect(result?.content).not.toContain(
+      "[...truncated, read AGENTS.md for full content...]",
+    );
+  });
+});