replace mocha with vitest

package.json

@@ -4,7 +4,8 @@
   "private": true,
   "description": "Port of tidalcycles to javascript",
   "scripts": {
-    "test": "npm run test --workspaces --if-present && cd repl && npm run test",
+    "test": "vitest run --version",
+    "test-ui": "vitest --ui",
     "bootstrap": "lerna bootstrap",
     "setup": "npm i && npm run bootstrap && cd repl && npm i && cd ../tutorial && npm i",
     "snapshot": "cd repl && npm run snapshot",
@@ -37,12 +38,14 @@
   },
   "homepage": "https://strudel.tidalcycles.org",
   "devDependencies": {
+    "@vitest/ui": "^0.21.1",
     "events": "^3.3.0",
     "gh-pages": "^4.0.0",
+    "happy-dom": "^6.0.4",
     "jsdoc": "^3.6.10",
     "jsdoc-json": "^2.0.2",
     "jsdoc-to-markdown": "^7.1.1",
     "lerna": "^4.0.0",
-    "mocha": "^9.1.4"
+    "vitest": "^0.21.1"
   }
 }

packages/core/package.json

@@ -5,7 +5,7 @@
   "main": "index.mjs",
   "type": "module",
   "scripts": {
-    "test": "mocha --colors"
+    "test": "vitest run"
   },
   "repository": {
     "type": "git",
@@ -28,8 +28,5 @@
     "bjork": "^0.0.1",
     "fraction.js": "^4.2.0"
   },
-  "devDependencies": {
-    "mocha": "^9.2.2"
-  },
   "gitHead": "0e26d4e741500f5bae35b023608f062a794905c2"
 }

packages/core/test/drawLine.test.mjs

@@ -5,52 +5,42 @@ This program is free software: you can redistribute it and/or modify it under th
 */
 
 import { fastcat, stack, slowcat, silence, pure } from '../pattern.mjs';
-import { strict as assert } from 'assert';
+import { describe, it, expect } from 'vitest';
 import drawLine from '../drawLine.mjs';
 
 describe('drawLine', () => {
   it('supports equal lengths', () => {
-    assert.equal(drawLine(fastcat(0), 4), '|0|0');
-    assert.equal(drawLine(fastcat(0, 1), 4), '|01|01');
-    assert.equal(drawLine(fastcat(0, 1, 2), 6), '|012|012');
+    expect(drawLine(fastcat(0), 4)).toEqual('|0|0');
+    expect(drawLine(fastcat(0, 1), 4)).toEqual('|01|01');
+    expect(drawLine(fastcat(0, 1, 2), 6)).toEqual('|012|012');
   });
   it('supports unequal lengths', () => {
-    assert.equal(drawLine(fastcat(0, [1, 2]), 10), '|0-12|0-12');
-    assert.equal(drawLine(fastcat(0, [1, 2, 3]), 10), '|0--123|0--123');
-    assert.equal(drawLine(fastcat(0, 1, [2, 3]), 10), '|0-1-23|0-1-23');
+    expect(drawLine(fastcat(0, [1, 2]), 10)).toEqual('|0-12|0-12');
+    expect(drawLine(fastcat(0, [1, 2, 3]), 10)).toEqual('|0--123|0--123');
+    expect(drawLine(fastcat(0, 1, [2, 3]), 10)).toEqual('|0-1-23|0-1-23');
   });
   it('supports unequal silence', () => {
-    assert.equal(drawLine(fastcat(0, silence, [1, 2]), 10), '|0-..12|0-..12');
+    expect(drawLine(fastcat(0, silence, [1, 2]), 10)).toEqual('|0-..12|0-..12');
   });
   it('supports polyrhythms', () => {
-    '0*2 1*3';
-    assert.equal(drawLine(fastcat(pure(0).fast(2), pure(1).fast(3)), 10), '|0--0--1-1-1-');
+    // assert.equal(drawLine(fastcat(pure(0).fast(2), pure(1).fast(3)), 10), '|0--0--1-1-1-');
+    expect(drawLine(fastcat(pure(0).fast(2), pure(1).fast(3)), 10)).toEqual('|0--0--1-1-1-');
   });
   it('supports multiple lines', () => {
-    assert.equal(
-      drawLine(fastcat(0, stack(1, 2)), 10),
-      `|01|01|01|01
-|.2|.2|.2|.2`,
-    );
-    assert.equal(
-      drawLine(fastcat(0, 1, stack(2, 3)), 10),
-      `|012|012|012
-|..3|..3|..3`,
-    );
-    assert.equal(
-      drawLine(fastcat(0, stack(1, 2, 3)), 10),
-      `|01|01|01|01
+    expect(drawLine(fastcat(0, stack(1, 2)), 10)).toEqual(`|01|01|01|01
+|.2|.2|.2|.2`);
+
+    expect(drawLine(fastcat(0, 1, stack(2, 3)), 10)).toEqual(`|012|012|012
+|..3|..3|..3`);
+
+    expect(drawLine(fastcat(0, stack(1, 2, 3)), 10)).toEqual(`|01|01|01|01
 |.2|.2|.2|.2
-|.3|.3|.3|.3`,
-    );
-    assert.equal(
-      drawLine(fastcat(0, 1, stack(2, 3, 4)), 10),
-      `|012|012|012
+|.3|.3|.3|.3`);
+    expect(drawLine(fastcat(0, 1, stack(2, 3, 4)), 10)).toEqual(`|012|012|012
 |..3|..3|..3
-|..4|..4|..4`,
-    );
+|..4|..4|..4`);
   });
   it('supports unequal cycle lengths', () => {
-    assert.equal(drawLine(slowcat(0, [1, 2]), 10), `|0|12|0|12`);
+    expect(drawLine(slowcat(0, [1, 2]), 10)).toEqual(`|0|12|0|12`);
   });
 });

packages/core/test/fraction.test.mjs

@@ -5,11 +5,11 @@ This program is free software: you can redistribute it and/or modify it under th
 */
 
 import Fraction, { gcd } from '../fraction.mjs';
-import { strict as assert } from 'assert';
+import { describe, it, expect } from 'vitest';
 
 describe('gcd', () => {
   it('should work', () => {
     const F = Fraction._original;
-    assert.equal(gcd(F(1 / 6), F(1 / 4)).toFraction(), '1/12');
+    expect(gcd(F(1 / 6), F(1 / 4)).toFraction()).toEqual('1/12');
   });
 });