k8s-set-context/src/utils.test.ts

import fs from "fs";
import * as arc from "./kubeconfigs/arc";
import * as def from "./kubeconfigs/default";
import { Cluster } from "./types/cluster";
import { getKubeconfig, setContext } from "./utils";

describe("Utils", () => {
  describe("get kubeconfig", () => {
    test("it gets arc kubeconfig when type is arc", async () => {
      const arcKubeconfig = "arckubeconfig";
      jest
        .spyOn(arc, "getArcKubeconfig")
        .mockImplementation(async () => arcKubeconfig);

      expect(await getKubeconfig(Cluster.ARC)).toBe(arcKubeconfig);
    });

    test("it defaults to default kubeconfig", async () => {
      const defaultKubeconfig = "arckubeconfig";
      jest
        .spyOn(def, "getDefaultKubeconfig")
        .mockImplementation(() => defaultKubeconfig);

      expect(await getKubeconfig(undefined)).toBe(defaultKubeconfig);
      expect(await getKubeconfig(Cluster.GENERIC)).toBe(defaultKubeconfig);
    });
  });

  describe("set context", () => {
    const kc = fs.readFileSync("tests/sample-kubeconfig.yml").toString();

    test("it doesn't change kubeconfig without context", () => {
      expect(setContext(kc)).toBe(kc);
    });

    test("it writes the context to the kubeconfig", () => {
      process.env["INPUT_CONTEXT"] = "example";

      const received = JSON.parse(setContext(kc));
      const expectedKc = JSON.parse(
        fs.readFileSync("tests/expected-kubeconfig.json").toString()
      );

      expect(received).toMatchObject(expectedKc);
    });
  });
});