add node_modules to address #4364

1 files changed, 89 insertions, 0 deletions

diff --git a/node_modules/buffer-crc32/tests/crc.test.js b/node_modules/buffer-crc32/tests/crc.test.js
new file mode 100644
index 000000000..bb0f9efcc
--- /dev/null
+++ b/node_modules/buffer-crc32/tests/crc.test.js
@@ -0,0 +1,89 @@
+var crc32 = require('..');
+var test = require('tap').test;
+
+test('simple crc32 is no problem', function (t) {
+  var input = Buffer('hey sup bros');
+  var expected = Buffer([0x47, 0xfa, 0x55, 0x70]);
+  t.same(crc32(input), expected);
+  t.end();
+});
+
+test('another simple one', function (t) {
+  var input = Buffer('IEND');
+  var expected = Buffer([0xae, 0x42, 0x60, 0x82]);
+  t.same(crc32(input), expected);
+  t.end();
+});
+
+test('slightly more complex', function (t) {
+  var input = Buffer([0x00, 0x00, 0x00]);
+  var expected = Buffer([0xff, 0x41, 0xd9, 0x12]);
+  t.same(crc32(input), expected);
+  t.end();
+});
+
+test('complex crc32 gets calculated like a champ', function (t) {
+  var input = Buffer('शीर्षक');
+  var expected = Buffer([0x17, 0xb8, 0xaf, 0xf1]);
+  t.same(crc32(input), expected);
+  t.end();
+});
+
+test('casts to buffer if necessary', function (t) {
+  var input = 'शीर्षक';
+  var expected = Buffer([0x17, 0xb8, 0xaf, 0xf1]);
+  t.same(crc32(input), expected);
+  t.end();
+});
+
+test('can do signed', function (t) {
+  var input = 'ham sandwich';
+  var expected = -1891873021;
+  t.same(crc32.signed(input), expected);
+  t.end();
+});
+
+test('can do unsigned', function (t) {
+  var input = 'bear sandwich';
+  var expected = 3711466352;
+  t.same(crc32.unsigned(input), expected);
+  t.end();
+});
+
+
+test('simple crc32 in append mode', function (t) {
+  var input = [Buffer('hey'), Buffer(' '), Buffer('sup'), Buffer(' '), Buffer('bros')];
+  var expected = Buffer([0x47, 0xfa, 0x55, 0x70]);
+  for (var crc = 0, i = 0; i < input.length; i++) {
+    crc = crc32(input[i], crc);
+  }
+  t.same(crc, expected);
+  t.end();
+});
+
+
+test('can do signed in append mode', function (t) {
+  var input1 = 'ham';
+  var input2 = ' ';
+  var input3 = 'sandwich';
+  var expected = -1891873021;
+
+  var crc = crc32.signed(input1);
+  crc = crc32.signed(input2, crc);
+  crc = crc32.signed(input3, crc);
+
+  t.same(crc, expected);
+  t.end();
+});
+
+test('can do unsigned in append mode', function (t) {
+  var input1 = 'bear san';
+  var input2 = 'dwich';
+  var expected = 3711466352;
+
+  var crc = crc32.unsigned(input1);
+  crc = crc32.unsigned(input2, crc);
+  t.same(crc, expected);
+  t.end();
+});
+