bun.sh/test/cli/run/env.test.ts

import { describe, expect, test } from "bun:test";
import { bunRun, bunTest, tempDirWithFiles } from "harness";

describe(".env file is loaded", () => {
  test(".env", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FOO=bar\n",
      "index.ts": "console.log(process.env.FOO);",
    });
    const { stdout } = bunRun(`${dir}/index.ts`);
    expect(stdout).toBe("bar");
  });
  test(".env.local", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FOO=fail\nBAR=baz\n",
      ".env.local": "FOO=bar\n",
      "index.ts": "console.log(process.env.FOO, process.env.BAR);",
    });
    const { stdout } = bunRun(`${dir}/index.ts`);
    expect(stdout).toBe("bar baz");
  });
  test(".env.development (NODE_ENV=undefined)", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FOO=fail\nBAR=baz\n",
      ".env.development": "FOO=bar\n",
      ".env.local": "LOCAL=true\n",
      "index.ts": "console.log(process.env.FOO, process.env.BAR, process.env.LOCAL);",
    });
    const { stdout } = bunRun(`${dir}/index.ts`);
    expect(stdout).toBe("bar baz true");
  });
  test(".env.development (NODE_ENV=development)", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FOO=fail\nBAR=baz\n",
      ".env.development": "FOO=bar\n",
      ".env.local": "LOCAL=true\n",
      "index.ts": "console.log(process.env.FOO, process.env.BAR, process.env.LOCAL);",
    });
    const { stdout } = bunRun(`${dir}/index.ts`);
    expect(stdout).toBe("bar baz true");
  });
  test(".env.production", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FOO=fail\nBAR=baz\n",
      ".env.production": "FOO=bar\n",
      ".env.local": "LOCAL=true\n",
      "index.ts": "console.log(process.env.FOO, process.env.BAR, process.env.LOCAL);",
    });
    const { stdout } = bunRun(`${dir}/index.ts`, { NODE_ENV: "production" });
    expect(stdout).toBe("bar baz true");
  });
  test(".env.development and .env.test ignored when NODE_ENV=production", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FOO=bar\nBAR=baz\n",
      ".env.development": "FOO=development\n",
      ".env.development.local": "FOO=development.local\n",
      ".env.test": "FOO=test\n",
      ".env.test.local": "FOO=test.local\n",
      ".env.local": "LOCAL=true\n",
      "index.ts": "console.log(process.env.FOO, process.env.BAR, process.env.LOCAL);",
    });
    const { stdout } = bunRun(`${dir}/index.ts`, { NODE_ENV: "production" });
    expect(stdout).toBe("bar baz true");
  });
  test(".env.production and .env.test ignored when NODE_ENV=development", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FOO=bar\nBAR=baz\n",
      ".env.production": "FOO=production\n",
      ".env.production.local": "FOO=production.local\n",
      ".env.test": "FOO=test\n",
      ".env.test.local": "FOO=test.local\n",
      ".env.local": "LOCAL=true\n",
      "index.ts": "console.log(process.env.FOO, process.env.BAR, process.env.LOCAL);",
    });
    const { stdout } = bunRun(`${dir}/index.ts`, {});
    expect(stdout).toBe("bar baz true");
  });
  test(".env and .env.test used in testing", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "A=a\n",
      ".env.test.local": "B=b\n",
      ".env.test": "C=c\n",
      ".env.development": "FAIL=.env.development\n",
      ".env.development.local": "FAIL=.env.development.local\n",
      ".env.production": "FAIL=.env.production\n",
      ".env.production.local": "FAIL=.env.production.local\n",
      "index.test.ts": "console.log(process.env.A,process.env.B,process.env.C,process.env.FAIL);",
    });
    const { stdout } = bunTest(`${dir}/index.test.ts`, {});
    expect(stdout).toBe("a b c undefined");
  });
  test(".env.local ignored when bun test", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FAILED=false\n",
      ".env.local": "FAILED=true\n",
      "index.test.ts": "console.log(process.env.FAILED, process.env.NODE_ENV);",
    });
    const { stdout } = bunTest(`${dir}/index.test.ts`, {});
    expect(stdout).toBe("false test");
  });
  test(".env.development and .env.production ignored when bun test", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FAILED=false\n",
      ".env.development": "FAILED=development\n",
      ".env.development.local": "FAILED=development.local\n",
      ".env.production": "FAILED=production\n",
      ".env.production.local": "FAILED=production.local\n",
      "index.test.ts": "console.log(process.env.FAILED, process.env.NODE_ENV);",
    });
    const { stdout } = bunTest(`${dir}/index.test.ts`);
    expect(stdout).toBe("false test");
  });
});
describe("dotenv priority", () => {
  test("process env overrides everything else", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FOO=.env\n",
      ".env.development": "FOO=.env.development\n",
      ".env.development.local": "FOO=.env.development.local\n",
      ".env.production": "FOO=.env.production\n",
      ".env.production.local": "FOO=.env.production.local\n",
      ".env.test.local": "FOO=.env.test.local\n",
      ".env.test": "FOO=.env.test\n",
      ".env.local": "FOO=.env.local\n",
      "index.ts": "console.log(process.env.FOO);",
      "index.test.ts": "console.log(process.env.FOO);",
    });
    const { stdout } = bunRun(`${dir}/index.ts`, { FOO: "override" });
    expect(stdout).toBe("override");

    const { stdout: stdout2 } = bunTest(`${dir}/index.test.ts`, { FOO: "override" });
    expect(stdout2).toBe("override");
  });
  test(".env.{NODE_ENV}.local overrides .env.local", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FOO=.env\n",
      ".env.development": "FOO=.env.development\n",
      ".env.development.local": "FOO=.env.development.local\n",
      ".env.production": "FOO=.env.production\n",
      ".env.production.local": "FOO=.env.production.local\n",
      ".env.test.local": "FOO=.env.test.local\n",
      ".env.test": "FOO=.env.test\n",
      ".env.local": "FOO=.env.local\n",
      "index.ts": "console.log(process.env.FOO);",
      "index.test.ts": "console.log(process.env.FOO);",
    });
    const { stdout: stdout_dev } = bunRun(`${dir}/index.ts`, { NODE_ENV: "development" });
    expect(stdout_dev).toBe(".env.development.local");
    const { stdout: stdout_prod } = bunRun(`${dir}/index.ts`, { NODE_ENV: "production" });
    expect(stdout_prod).toBe(".env.production.local");
    const { stdout: stdout_test } = bunTest(`${dir}/index.test.ts`, {});
    expect(stdout_test).toBe(".env.test.local");
  });
  test(".env.local overrides .env.{NODE_ENV}", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FOO=.env\n",
      ".env.development": "FOO=.env.development\n",
      ".env.production": "FOO=.env.production\n",
      ".env.test": "FOO=.env.test\n",
      ".env.local": "FOO=.env.local\n",
      "index.ts": "console.log(process.env.FOO);",
      "index.test.ts": "console.log(process.env.FOO);",
    });
    const { stdout: stdout_dev } = bunRun(`${dir}/index.ts`, { NODE_ENV: "development" });
    expect(stdout_dev).toBe(".env.local");
    const { stdout: stdout_prod } = bunRun(`${dir}/index.ts`, { NODE_ENV: "production" });
    expect(stdout_prod).toBe(".env.local");
    // .env.local is "not checked when `NODE_ENV` is `test`"
    const { stdout: stdout_test } = bunTest(`${dir}/index.test.ts`, {});
    expect(stdout_test).toBe(".env.test");
  });
  test(".env.{NODE_ENV} overrides .env", () => {
    const dir = tempDirWithFiles("dotenv", {
      ".env": "FOO=.env\n",
      ".env.development": "FOO=.env.development\n",
      ".env.production": "FOO=.env.production\n",
      ".env.test": "FOO=.env.test\n",
      "index.ts": "console.log(process.env.FOO);",
      "index.test.ts": "console.log(process.env.FOO);",
    });
    const { stdout: stdout_dev } = bunRun(`${dir}/index.ts`, { NODE_ENV: "development" });
    expect(stdout_dev).toBe(".env.development");
    const { stdout: stdout_prod } = bunRun(`${dir}/index.ts`, { NODE_ENV: "production" });
    expect(stdout_prod).toBe(".env.production");
    const { stdout: stdout_test } = bunTest(`${dir}/index.test.ts`, {});
    expect(stdout_test).toBe(".env.test");
  });
});

test.todo(".env space edgecase (issue #411)", () => {
  const dir = tempDirWithFiles("dotenv-issue-411", {
    ".env": "VARNAME=A B",
    "index.ts": "console.log('[' + process.env.VARNAME + ']'); ",
  });
  const { stdout } = bunRun(`${dir}/index.ts`);
  expect(stdout).toBe("[A B]");
});

test.todo(".env special characters 1 (issue #2823)", () => {
  const dir = tempDirWithFiles("dotenv-issue-411", {
    ".env": 'A="a$t"\n',
    "index.ts": "console.log('[' + process.env.A + ']'); ",
  });
  const { stdout } = bunRun(`${dir}/index.ts`);
  expect(stdout).toBe("[a$t]");
});

test.todo("env escaped quote (issue #2484)", () => {
  const dir = tempDirWithFiles("dotenv-issue-411", {
    "index.ts": "console.log(process.env.VALUE, process.env.VALUE2);",
  });
  const { stdout } = bunRun(`${dir}/index.ts`, { VALUE: `\\"`, VALUE2: `\\\\"` });
  expect(stdout).toBe('\\" \\\\"');
});