Include `typedarray-to-buffer` test

Fixes #93

diff --git a/package.json b/package.json
index 4a616bb125c0d1339b5fe6eba765b9ec133a647e..6b93e1cc8ff4002dd55b985599c414f83ecd36e5 100644 (file)
--- a/package.json
+++ b/package.json
@@ -30,6 +30,7 @@
     "standard": "^5.0.0",
     "tape": "^4.0.0",
     "through2": "^2.0.0",
+    "typedarray-to-buffer": "^3.0.4",
     "zuul": "^3.0.0"
   },
   "homepage": "https://github.com/feross/buffer",

diff --git a/test/typedarray-to-buffer.js b/test/typedarray-to-buffer.js
new file mode 100644 (file)
index 0000000..e683b1a
--- /dev/null
+++ b/test/typedarray-to-buffer.js
@@ -0,0 +1,52 @@
+if (process.env.OBJECT_IMPL) global.TYPED_ARRAY_SUPPORT = false
+var B = require('../').Buffer
+var toBuffer = require('typedarray-to-buffer')
+var test = require('tape')
+
+test('convert to buffer from Uint8Array', function (t) {
+  if (typeof Uint8Array !== 'undefined') {
+    var arr = new Uint8Array([1, 2, 3])
+    arr = toBuffer(arr)
+
+    t.deepEqual(arr, new B([1, 2, 3]), 'contents equal')
+    t.ok(Buffer.isBuffer(arr), 'is buffer')
+    t.equal(arr.readUInt8(0), 1)
+    t.equal(arr.readUInt8(1), 2)
+    t.equal(arr.readUInt8(2), 3)
+  } else {
+    t.pass('browser lacks Uint8Array support, skip test')
+  }
+  t.end()
+})
+
+test('convert to buffer from another arrayview type (Uint32Array)', function (t) {
+  if (typeof Uint32Array !== 'undefined' && B.TYPED_ARRAY_SUPPORT) {
+    var arr = new Uint32Array([1, 2, 3])
+    arr = toBuffer(arr)
+
+    t.deepEqual(arr, new B([1, 0, 0, 0, 2, 0, 0, 0, 3, 0, 0, 0]), 'contents equal')
+    t.ok(Buffer.isBuffer(arr), 'is buffer')
+    t.equal(arr.readUInt32LE(0), 1)
+    t.equal(arr.readUInt32LE(4), 2)
+    t.equal(arr.readUInt32LE(8), 3)
+    t.equal(arr instanceof Uint8Array, true)
+  } else {
+    t.pass('browser lacks Uint32Array support, skip test')
+  }
+  t.end()
+})
+
+test('convert to buffer from ArrayBuffer', function (t) {
+  if (typeof Uint32Array !== 'undefined' && B.TYPED_ARRAY_SUPPORT) {
+    var arr = new Uint32Array([1, 2, 3]).subarray(1, 2)
+    arr = toBuffer(arr)
+
+    t.deepEqual(arr, new B([2, 0, 0, 0]), 'contents equal')
+    t.ok(Buffer.isBuffer(arr), 'is buffer')
+    t.equal(arr.readUInt32LE(0), 2)
+    t.equal(arr instanceof Uint8Array, true)
+  } else {
+    t.pass('browser lacks ArrayBuffer support, skip test')
+  }
+  t.end()
+})