grind mode baby

packages/pi-grind/test/parser.test.ts

@@ -0,0 +1,44 @@
+import { describe, expect, it } from "vitest";
+import { detectCue, parseAutoActivation, parseGrindStatus, parseStopCondition } from "../src/parser.js";
+
+describe("pi-grind parser", () => {
+	const now = new Date(2026, 2, 9, 9, 0, 0);
+	const cues = ["don't stop", "keep going", "run until"];
+
+	it("detects explicit grind cues", () => {
+		expect(detectCue("Please keep going on this", cues)).toBe("keep going");
+		expect(detectCue("Normal prompt", cues)).toBeNull();
+	});
+
+	it("parses time-based stop conditions", () => {
+		const result = parseStopCondition("keep going until 5pm", now);
+		expect(result.deadlineAt).toBe(new Date(2026, 2, 9, 17, 0, 0).toISOString());
+		expect(result.completionCriterion).toBeNull();
+	});
+
+	it("parses criterion-based stop conditions when no time is found", () => {
+		const result = parseStopCondition("don't stop until the migration is finished", now);
+		expect(result.deadlineAt).toBeNull();
+		expect(result.completionCriterion).toBe("the migration is finished");
+	});
+
+	it("parses full auto activation payloads", () => {
+		const result = parseAutoActivation("run until tomorrow 5:30pm and finish the report", cues, now);
+
+		expect(result).not.toBeNull();
+		expect(result?.matchedCue).toBe("run until");
+		expect(result?.stopCondition.deadlineAt).toBe(new Date(2026, 2, 10, 17, 30, 0).toISOString());
+	});
+
+	it("parses grind status trailers", () => {
+		const payload = parseGrindStatus(
+			'Work done.\n<grind_status>{"state":"continue","summary":"half done","nextAction":"finish tests"}</grind_status>',
+		);
+
+		expect(payload).toEqual({
+			state: "continue",
+			summary: "half done",
+			nextAction: "finish tests",
+		});
+	});
+});