import { describe, it } from "node:test";
import assert from "node:assert/strict";
import { ZodError } from "zod";

import { parseExecutionContext, executionContextSchema } from "./execution-context-schema";

describe("parseExecutionContext", () => {
    it("parses valid executionContext with diachron_root", () => {
        const env = { diachron_root: "/some/path" };
        const result = parseExecutionContext(env);
        assert.deepEqual(result, { diachron_root: "/some/path" });
    });

    it("throws ZodError when diachron_root is missing", () => {
        const env = {};
        assert.throws(() => parseExecutionContext(env), ZodError);
    });

    it("strips extra fields not in schema", () => {
        const env = {
            diachron_root: "/some/path",
            EXTRA_VAR: "should be stripped",
        };
        const result = parseExecutionContext(env);
        assert.deepEqual(result, { diachron_root: "/some/path" });
        assert.equal("EXTRA_VAR" in result, false);
    });
});

describe("executionContextSchema", () => {
    it("requires diachron_root to be a string", () => {
        const result = executionContextSchema.safeParse({ diachron_root: 123 });
        assert.equal(result.success, false);
    });
});