confme/tests/test_suite.js

Opinionated config library that allows you to have complex config and behaves according to Twelve Factor App rules

const test = require("ava");
const confme = require("../src/confme");

test("test default config", (t) => {
  const config = confme(`${__dirname}/simple/basic.json`);

  t.is(config.key, "value");
});

test("test environment variable interpolation", (t) => {
  const randomPositive = 1286124;

  process.env.VALUE = randomPositive;
  const config = confme(
    `${__dirname}/inherited/basic.json`,
    `${__dirname}/inherited/config-schema.json`
  );

  t.is(config.key, randomPositive);
});

test("test schema fail", (t) => {
  const randomNegative = -1263;

  process.env.VALUE = randomNegative;
  try {
    confme(
      `${__dirname}/inherited/basic.json`,
      `${__dirname}/inherited/config-schema.json`
    );

    t.fail("LIVR validation should have failed");
  } catch (ex) {
    t.truthy(ex.message.match(/NOT_POSITIVE_INTEGER/));
    t.pass();
  }
});

test("bad configuration", (t) => {
  try {
    confme(`${__dirname}/badconfig/basic.json`);

    t.fail("should have been unable to parse bad configuration file");
  } catch (ex) {
    t.truthy(ex.message.match(/invalid end of input/));
    t.pass();
  }
});

test("test missing variable", (t) => {
  try {
    confme(`${__dirname}/error/basic.json`);

    t.fail("should have received an exception for missing env var");
  } catch (ex) {
    t.is(ex.message, 'Variable "OTHERVALUE" not set!');
    t.pass();
  }
});