Remove 'binary' encoding assert - add tests

Don't write large characters to buffers with binary encoding. You will be
silently injured.

1 files changed, 15 insertions, 0 deletions

diff --git a/test/simple/test-buffer.js b/test/simple/test-buffer.js
index 11bc58b165..1aa4611010 100644
--- a/test/simple/test-buffer.js
+++ b/test/simple/test-buffer.js
@@ -505,3 +505,18 @@ assert.equal(0x6f, z[1]);
 var b = new SlowBuffer(10);
 b.write('あいうえお', 'ucs2');
 assert.equal(b.toString('ucs2'), 'あいうえお');
+
+// Binary encoding should write only one byte per character.
+var b = Buffer([0xde, 0xad, 0xbe, 0xef]);
+var s = String.fromCharCode(0xffff);
+b.write(s, 0, 'binary')
+assert.equal(0xff, b[0]);
+assert.equal(0xad, b[1]);
+assert.equal(0xbe, b[2]);
+assert.equal(0xef, b[3]);
+s = String.fromCharCode(0xaaee);
+b.write(s, 0, 'binary')
+assert.equal(0xee, b[0]);
+assert.equal(0xad, b[1]);
+assert.equal(0xbe, b[2]);
+assert.equal(0xef, b[3]);