fix tests

Author: ChALkeR

test/test.js

@@ -6,6 +6,13 @@ var Buffer = require('safe-buffer').Buffer;
 
 var Sha1 = require('../').sha1;
 
+
+let nodeSupportsUint16 = false
+try {
+  crypto.createHash('sha1').update(new Uint16Array())
+  nodeSupportsUint16 = true
+} catch (err) {}
+
 var inputs = [
 	['', 'ascii'],
 	['abc', 'ascii'],
@@ -16,7 +23,8 @@ var inputs = [
 	['0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcde', 'ascii'],
 	['0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef', 'ascii'],
 	['foobarbaz', 'ascii'],
-	typeof Uint16Array === 'function' ? [new Uint16Array([1, 2, 3])] : null
+	[Buffer.from('buffer')],
+	nodeSupportsUint16 ? [new Uint16Array([1, 2, 3])] : null
 ].filter(Boolean);
 
 tape("hash is the same as node's crypto", function (t) {