diff --git a/packages/osc/tests/message-encode.test.js b/packages/osc/tests/message-encode.test.js
index 86f47c5..139b884 100644
--- a/packages/osc/tests/message-encode.test.js
+++ b/packages/osc/tests/message-encode.test.js
@@ -6,37 +6,63 @@ const tests = [
   {
     description: 'simple address no args',
     message: { address: '/hello', args: [] },
-    expected: Buffer.from('2f68656c6c6f00002c000000', 'hex'),
+    expected: new Uint8Array([47, 104, 101, 108, 108, 111, 0, 0, 44, 0, 0, 0]),
   },
   {
     description: 'simple address string arg',
     message: { address: '/hello', args: [{ type: 's', value: 'arg1' }] },
-    expected: Buffer.from('2f68656c6c6f00002c7300006172673100000000', 'hex'),
+    expected: new Uint8Array([47, 104, 101, 108, 108, 111, 0, 0, 44, 115, 0, 0, 97, 114, 103, 49, 0, 0, 0, 0]),
   },
   {
     description: 'simple address integer arg',
     message: { address: '/hello', args: [{ type: 'i', value: 35 }] },
-    expected: Buffer.from('2f68656c6c6f00002c69000000000023', 'hex'),
+    expected: new Uint8Array([47, 104, 101, 108, 108, 111, 0, 0, 44, 105, 0, 0, 0, 0, 0, 35]),
   },
   {
     description: 'simple address float arg',
     message: { address: '/hello', args: [{ type: 'f', value: 34.5 }] },
-    expected: Buffer.from('2f68656c6c6f00002c660000420a0000', 'hex'),
+    expected: new Uint8Array([47, 104, 101, 108, 108, 111, 0, 0, 44, 102, 0, 0, 66, 10, 0, 0]),
   },
   {
     description: 'simple address blob arg',
     message: { address: '/hello', args: [{ type: 'b', value: new TextEncoder().encode('blob') }] },
-    expected: Buffer.from('2f68656c6c6f00002c62000000000004626c6f62', 'hex'),
+    expected: new Uint8Array([47, 104, 101, 108, 108, 111, 0, 0, 44, 98, 0, 0, 0, 0, 0, 4, 98, 108, 111, 98]),
   },
   {
     description: 'simple address True arg',
     message: { address: '/hello', args: [{ type: 'T', value: true }] },
-    expected: Buffer.from('2f68656c6c6f00002c540000', 'hex'),
+    expected: new Uint8Array([47, 104, 101, 108, 108, 111, 0, 0, 44, 84, 0, 0]),
   },
   {
     description: 'simple address False arg',
     message: { address: '/hello', args: [{ type: 'F', value: false }] },
-    expected: Buffer.from('2f68656c6c6f00002c460000', 'hex'),
+    expected: new Uint8Array([47, 104, 101, 108, 108, 111, 0, 0, 44, 70, 0, 0]),
+  },
+  {
+    description: 'osc 1.0 spec example 1',
+    message: { address: '/oscillator/4/frequency', args: [{ type: 'f', value: 440 }] },
+    expected: new Uint8Array([
+      47, 111, 115, 99, 105, 108, 108, 97, 116, 111, 114, 47, 52, 47, 102, 114, 101, 113, 117, 101, 110, 99, 121, 0, 44,
+      102, 0, 0, 67, 220, 0, 0,
+    ]),
+  },
+  {
+    description: 'osc 1.0 spec example 2',
+    message: {
+      address: '/foo',
+      args: [
+        { type: 'i', value: 1000 },
+        { type: 'i', value: -1 },
+        { type: 's', value: 'hello' },
+        // thanks IEEE 754
+        { type: 'f', value: 1.2339999675750732421875 },
+        { type: 'f', value: 5.677999973297119140625 },
+      ],
+    },
+    expected: new Uint8Array([
+      47, 102, 111, 111, 0, 0, 0, 0, 44, 105, 105, 115, 102, 102, 0, 0, 0, 0, 3, 232, 255, 255, 255, 255, 104, 101, 108,
+      108, 111, 0, 0, 0, 63, 157, 243, 182, 64, 181, 178, 45,
+    ]),
   },
 ];