import { describe, expect, it } from "vitest";
import { resolveTestRunPlan } from "./resolve-test-run-plan.ts";
import type { ProjectProbe } from "../ports/project-probe.ts";

function probeWithExistingPaths(existingPaths: string[]): ProjectProbe {
	const existing = new Set(existingPaths);

	return {
		async exists(path: string): Promise<boolean> {
			return existing.has(path);
		},
	};
}

describe("resolveTestRunPlan", () => {
	const cwd = "/workspace/service";

	it("resolves the default Go test plan for a Go module", async () => {
		const plan = await resolveTestRunPlan({
			cwd,
			argsTail: "",
			probe: probeWithExistingPaths(["/workspace/service/go.mod"]),
		});

		expect(plan).toMatchObject({
			language: "go",
			cwd,
			command: "go",
			args: ["test", "-race", "./..."],
			displayCommand: "go test -race ./...",
		});
	});

	it("resolves tagged Go test plans for a Go workspace", async () => {
		const plan = await resolveTestRunPlan({
			cwd,
			argsTail: "--tags contract,e2e",
			probe: probeWithExistingPaths(["/workspace/service/go.work"]),
		});

		expect(plan).toMatchObject({
			language: "go",
			cwd,
			command: "go",
			args: ["test", "-race", "-tags=contract,e2e", "./..."],
			displayCommand: "go test -race -tags=contract,e2e ./...",
		});
	});

	it("fails with a useful error when the repository is not recognized", async () => {
		await expect(
			resolveTestRunPlan({
				cwd,
				argsTail: "",
				probe: probeWithExistingPaths([]),
			}),
		).rejects.toThrow(/unsupported project/i);
	});
});