Improve test coverage

lib/transaction/transaction.js

@@ -49,6 +49,8 @@ function Transaction(serialized) {
       return Transaction.shallowCopy(serialized);
     } else if (util.isHexa(serialized)) {
       this.fromString(serialized);
+    } else if (util.isValidJSON(serialized)) {
+      this.fromJSON(serialized);
     } else if (bufferUtil.isBuffer(serialized)) {
       this.fromBuffer(serialized);
     } else if (_.isObject(serialized)) {
@@ -221,7 +223,7 @@ Transaction.prototype.toObject = function toObject() {
     outputs.push(output.toObject());
   });
   return {
-    change: this._change ? this._change.toObject() : undefined,
+    change: this._change ? this._change.toString() : undefined,
     version: this.version,
     inputs: inputs,
     outputs: outputs,

test/address.js

@@ -456,6 +456,16 @@ describe('Address', function() {
     });
   });
 
+  it('throws an error if it couldn\'t instantiate', function() {
+    expect(function() {
+      return new Address(1);
+    }).to.throw(TypeError);
+  });
+  it('can roundtrip from/to a object', function() {
+    var address = new Address(P2SHLivenet[0]);
+    expect(new Address(address.toObject()).toString()).to.equal(P2SHLivenet[0]);
+  });
+
   describe('creating a P2SH address from public keys', function() {
 
     var public1 = '02da5798ed0c055e31339eb9b5cef0d3c0ccdec84a62e2e255eb5c006d4f3e7f5b';

test/transaction/transaction.js

@@ -243,6 +243,18 @@ describe('Transaction', function() {
       }).to.throw(errors.Transaction.FeeError);
     });
   });
+
+  describe('to and from JSON', function() {
+    it('takes a string that is a valid JSON and deserializes from it', function() {
+      var transaction = new Transaction();
+      expect(new Transaction(transaction.toJSON()).serialize()).to.equal(transaction.serialize());
+    });
+    it('serializes the `change` information', function() {
+      var transaction = new Transaction();
+      transaction.change(changeAddress);
+      expect(JSON.parse(transaction.toJSON()).change).to.equal(changeAddress.toString());
+    });
+  });
 });
 
 var tx_empty_hex = '01000000000000000000';