testFmtRestylesWithNoHashChanging

tcmts.cli.test.e2e.fmt.testFmtRestylesWithNoHashChanging · #hkqw6px2 · term

Fmt: what's saved is formatted, and restyling stored code changes no hash.

import { hashes } from "#codebase/tcmts/cli/test/e2e/fmt";
import { okIn, tempDir } from "#codebase/tcmts/cli/test/e2e/harness";
import assert from "node:assert/strict";
import fs from "node:fs";
import path from "node:path";

export const testFmtRestylesWithNoHashChanging = () => {
  const dir = tempDir("fmt");
  const tcm = (...args: string[]) => okIn(dir, ...args);
  tcm("init");
  fs.rmSync(path.join(dir, "scratch.ts"));
  const written = `// tcm: namespace lib\nexport function shout(s:string){return s.toUpperCase()+"!"}\nexport const greet=(n:string)=>shout("hi "+n)\n`;
  fs.writeFileSync(path.join(dir, "lib.ts"), written);
  tcm("add", "lib.ts");
  assert.equal(fs.readFileSync(path.join(dir, "lib.ts"), "utf8"), written, "the scratch file is left as written");
  assert.match(tcm("view", "lib.shout"), /export function shout\(s: string\) \{\n {2}return s\.toUpperCase\(\) \+ "!";\n\}/, "the codebase has it formatted");
  const before = hashes(dir);

  // a style change restyles everything stored, without a single hash changing
  fs.writeFileSync(path.join(dir, "f.ts"), `// tcm: namespace fmt\nexport const config = { singleQuote: true, semi: false };\n`);
  tcm("add", "f.ts");
  const fmt = tcm("fmt", "lib");
  assert.match(fmt, /reformatted 2 definition\(s\); no hashes changed/);
  assert.match(tcm("view", "lib.greet"), /shout\('hi ' \+ n\)/);
  assert.match(tcm("view", "lib.shout"), /return s\.toUpperCase\(\) \+ '!'\n/);
  assert.deepEqual(hashes(dir).filter((h) => !String(h.path).startsWith("fmt.")), before);
  assert.match(tcm("verify"), /rendering and re-hashing is the identity/);
  assert.match(tcm("fmt", "lib"), /everything is formatted/);
}

testFmtRestylesWithNoHashChanging

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