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test-dotenv-edge-cases.js
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test-dotenv-edge-cases.js
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'use strict';
const common = require('../common');
const assert = require('node:assert');
const { describe, it } = require('node:test');
const validEnvFilePath = '../fixtures/dotenv/valid.env';
const nodeOptionsEnvFilePath = '../fixtures/dotenv/node-options.env';
describe('.env supports edge cases', () => {
it('supports multiple declarations', async () => {
// process.env.BASIC is equal to `basic` because the second .env file overrides it.
const code = `
const assert = require('assert');
assert.strictEqual(process.env.BASIC, 'basic');
assert.strictEqual(process.env.NODE_NO_WARNINGS, '1');
`.trim();
const child = await common.spawnPromisified(
process.execPath,
[ `--env-file=${nodeOptionsEnvFilePath}`, `--env-file=${validEnvFilePath}`, '--eval', code ],
{ cwd: __dirname },
);
assert.strictEqual(child.stderr, '');
assert.strictEqual(child.code, 0);
});
it('should handle non-existent .env file', async () => {
const code = `
require('assert').strictEqual(1, 1)
`.trim();
const child = await common.spawnPromisified(
process.execPath,
[ '--env-file=.env', '--eval', code ],
{ cwd: __dirname },
);
assert.notStrictEqual(child.stderr.toString(), '');
assert.strictEqual(child.code, 9);
});
it('should not override existing environment variables but introduce new vars', async () => {
const code = `
require('assert').strictEqual(process.env.BASIC, 'existing');
require('assert').strictEqual(process.env.AFTER_LINE, 'after_line');
`.trim();
const child = await common.spawnPromisified(
process.execPath,
[ `--env-file=${validEnvFilePath}`, '--eval', code ],
{ cwd: __dirname, env: { ...process.env, BASIC: 'existing' } },
);
assert.strictEqual(child.stderr, '');
assert.strictEqual(child.code, 0);
});
});