@reliance/feature-flags/test/isFeatureEnabled.test.js

A package for determining feature flag status based on environment variables or flag objects.

const { isFeatureEnabled, setFeature } = require("../src");

const features = {
  newUI: (params) => params.isBetaUser === true,
  adminDashboard: (params) => params.admin === true,
  roleSpecific: (params) => {
    return params.roles.includes("QA") || params.roles.includes("admin");
  },
};

// Set up environment variables for testing
beforeAll(() => {
  process.env.viewPrescription = "true";
  process.env.anotherFeature = "false";
  setFeature(features);
});

describe("isFeatureEnabled", () => {
  test("should return true for newUI feature if isBetaUser is true", () => {
    const betaUserParams = { isBetaUser: true };
    expect(isFeatureEnabled("newUI", betaUserParams)).toBe(true);
  });

  test("should return false for newUI feature if isBetaUser is false", () => {
    const betaUserParams = { isBetaUser: false };
    expect(isFeatureEnabled("newUI", betaUserParams)).toBe(false);
  });

  test("should return true for adminDashboard feature if admin is true", () => {
    const adminParams = { admin: true };
    expect(isFeatureEnabled("adminDashboard", adminParams)).toBe(true);
  });

  test("should return false for adminDashboard feature if admin is false", () => {
    const adminParams = { admin: false };
    expect(isFeatureEnabled("adminDashboard", adminParams)).toBe(false);
  });

  test("should return true for roleSpecific feature if roles include QA or admin", () => {
    const userRoles = { roles: ["admin", "QA"] };
    expect(isFeatureEnabled("roleSpecific", userRoles)).toBe(true);
  });

  test("should return false for roleSpecific feature if roles do not include QA or admin", () => {
    const userRoles = { roles: ["user"] };
    expect(isFeatureEnabled("roleSpecific", userRoles)).toBe(false);
  });

  test("should return true for viewPrescription feature if it is set to true in environment variables", () => {
    expect(isFeatureEnabled("viewPrescription")).toBe(true);
  });

  test("should return false for non-existing feature", () => {
    expect(isFeatureEnabled("nonExistingFeature")).toBe(false);
  });
});