From 127072709852a9f156abe850c4004c7c2ba32119 Mon Sep 17 00:00:00 2001
From: Yotam Mann <yotammann@gmail.com>
Date: Mon, 15 Aug 2016 10:22:50 -0400
Subject: [PATCH] testing to/from Array methods

---
 test/core/Buffer.js | 69 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/test/core/Buffer.js b/test/core/Buffer.js
index df5a7c3c..fa8e5c6a 100644
--- a/test/core/Buffer.js
+++ b/test/core/Buffer.js
@@ -29,6 +29,22 @@ define(["Test", "Tone/core/Buffer"], function (Test, Buffer) {
 			});
 		});
 
+		it("can get the number of channels", function(done){
+			var buffer = new Buffer(testFile, function(){
+				expect(buffer.numberOfChannels).to.be.equal(1);
+				buffer.dispose();
+				done();
+			});
+		});
+
+		it("can get the length of the buffer", function(done){
+			var buffer = new Buffer(testFile, function(){
+				expect(buffer.length).to.be.equal(132301);
+				buffer.dispose();
+				done();
+			});
+		});
+
 		it("the static on('load') method is invoked", function(done){
 			var buffer = new Buffer(testFile);
 			Buffer.on("load", function(){
@@ -123,5 +139,58 @@ define(["Test", "Tone/core/Buffer"], function (Test, Buffer) {
 				done();
 			});
 		});
+
+		it("can convert from an array", function(){
+			var buffer = new Buffer();
+			var arr = new Float32Array(0.5 * buffer.context.sampleRate);
+			arr[0] = 0.5;
+			buffer.fromArray(arr);
+			expect(buffer.duration).to.equal(0.5);
+			expect(buffer.numberOfChannels).to.equal(1);
+			//test the first sample of the first channel to see if it's the same
+			expect(buffer.get().getChannelData(0)[0]).to.equal(0.5);
+			buffer.dispose();
+		});
+
+		it("can convert from a multidimentional array", function(){
+			var buffer = new Buffer();
+			var arr = [new Float32Array(0.5 * buffer.context.sampleRate), new Float32Array(0.5 * buffer.context.sampleRate)];
+			arr[0][0] = 0.5;
+			buffer.fromArray(arr);
+			expect(buffer.duration).to.equal(0.5);
+			expect(buffer.numberOfChannels).to.equal(2);
+			expect(buffer.get().getChannelData(0)[0]).to.equal(0.5);
+			buffer.dispose();
+		});
+
+		it("can convert to and from an array", function(){
+			var buffer = new Buffer();
+			var arr = [new Float32Array(0.5 * buffer.context.sampleRate), new Float32Array(0.5 * buffer.context.sampleRate)];
+			arr[0][0] = 0.5;
+			buffer.fromArray(arr);
+			expect(buffer.get().getChannelData(0)[0]).to.equal(0.5);
+			expect(buffer.toArray()[0][0]).to.equal(0.5);
+			//with a selected channel
+			expect(buffer.toArray(0)[0]).to.equal(0.5);
+			buffer.dispose();
+		});
+
+		it("can slice a portion of the array", function(done){
+			var buffer = new Buffer(testFile, function(){
+				//original duration
+				expect(buffer.duration).to.be.closeTo(3, 0.01);
+				var sliced1 = buffer.slice(0, 1);
+				//does not modify the original
+				expect(buffer.duration).to.be.closeTo(3, 0.01);
+				expect(sliced1.duration).to.be.closeTo(1, 0.01);
+				var sliced2 = sliced1.slice(0.5);
+				expect(sliced2.duration).to.be.closeTo(0.5, 0.01);
+				
+				buffer.dispose();
+				sliced1.dispose();
+				sliced2.dispose();
+				done();
+			});
+		});
 	});
 });
\ No newline at end of file