Check the compressed property in Signature.fromCompact tests.

test/crypto/signature.js

@@ -49,6 +49,7 @@ describe('Signature', function() {
       var sig = Signature.fromCompact(compressed);
       sig.r.cmp(BN.Zero).should.equal(0);
       sig.s.cmp(BN.Zero).should.equal(0);
+      sig.compressed.should.equal(true);
     });
 
     it('should create a signature from an uncompressed signature', function() {
@@ -59,6 +60,7 @@ describe('Signature', function() {
       var s = '2fc1188e8b0dc553a2588be2b5b68dbbd7f092894aa3397786e9c769c5348dc6';
       sig.r.toString('hex').should.equal(r);
       sig.s.toString('hex').should.equal(s);
+      sig.compressed.should.equal(false);
     });
 
   });