From a638f9505f3bc5937307f3f68da3ff7437e563e7 Mon Sep 17 00:00:00 2001
From: Felix Roos <roos@entrecode.de>
Date: Sat, 16 Apr 2022 21:34:19 +0200
Subject: [PATCH] test fromMidi + getFrequency

---
 packages/core/test/util.test.mjs | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/packages/core/test/util.test.mjs b/packages/core/test/util.test.mjs
index 5e8c906e..bf402793 100644
--- a/packages/core/test/util.test.mjs
+++ b/packages/core/test/util.test.mjs
@@ -1,5 +1,6 @@
 import { strict as assert } from 'assert';
-import { isNote, tokenizeNote, toMidi, mod, compose } from '../util.mjs';
+import { pure } from '../pattern.mjs';
+import { isNote, tokenizeNote, toMidi, fromMidi, mod, compose, getFrequency } from '../util.mjs';
 
 describe('isNote', () => {
   it('should recognize notes without accidentals', () => {
@@ -64,6 +65,21 @@ describe('toMidi', () => {
     assert.equal(toMidi('C##3'), 50);
   });
 });
+describe('fromMidi', () => {
+  it('should turn midi into frequency', () => {
+    assert.equal(fromMidi(69), 440);
+    assert.equal(fromMidi(57), 220);
+  });
+});
+describe('getFrequency', () => {
+  it('should turn midi into frequency', () => {
+    const happify = (val, context = {}) => pure(val).firstCycle()[0].setContext(context);
+    assert.equal(getFrequency(happify('a4')), 440);
+    assert.equal(getFrequency(happify('a3')), 220);
+    assert.equal(getFrequency(happify(440, { type: 'frequency' })), 440); // TODO: migrate when values are objects..
+    assert.equal(getFrequency(happify(432, { type: 'frequency' })), 432);
+  });
+});
 
 describe('mod', () => {
   it('should work like regular modulo with positive numbers', () => {