import { SetTransform } from "./set";
import * as YAML from "yaml";
import { DEFAULT_YAML_CONFIG } from "../config";

describe(SetTransform.name, () => {
  describe("given valid yaml", () => {
    describe("given new value", () => {
      it("should set value", () => {
        const yaml = YAML.stringify({});
        const result = YAML.parse(
          new SetTransform(
            { path: "foo:bar", value: "baz" },
            DEFAULT_YAML_CONFIG
          ).transform(yaml)
        );

        expect(result).toEqual({
          foo: {
            bar: "baz",
          },
        });
      });
    });
    describe("given existing value", () => {
      it("should update value", () => {
        const yaml = YAML.stringify({ foo: { bar: "other" } });
        const result = YAML.parse(
          new SetTransform(
            { path: "foo:bar", value: "baz" },
            DEFAULT_YAML_CONFIG
          ).transform(yaml)
        );

        expect(result).toEqual({
          foo: {
            bar: "baz",
          },
        });
      });
    });
  });
  describe("given invalid yaml", () => {
    it("should leave value untouched", () => {
      const result = YAML.parse(
        new SetTransform(
          { path: "foo:bar", value: "baz" },
          DEFAULT_YAML_CONFIG
        ).transform("bla")
      );

      expect(result).toBe("bla");
    });
  });
});