added failing test for type-casting row results

test/unit/typed-results-tests.js

@@ -0,0 +1,59 @@
+require(__dirname+"/test-helper");
+
+
+var queryResult = function(dataTypeID, value) {
+  var stream = new MemoryStream();
+
+  var client = new Client({
+    stream: stream
+  });
+
+  client.connect();
+
+  var query = client.query('whatever');
+
+  var lastRow = [];
+
+  query.on('row', function(row) {
+    lastRow = row;
+  });
+
+  stream.emit('data', buffers.readyForQuery());
+
+  stream.emit('data', buffers.rowDescription([{
+    name: 'col',
+    dataTypeID: dataTypeID
+  }]));
+
+  stream.emit('data', buffers.dataRow([value]));
+
+  stream.emit('data', buffers.commandComplete());
+
+  assert.length(lastRow, 1);
+
+  return lastRow[0];
+};
+
+var testForType = function(nameAsString, typeID, stringVal, expected) {
+  test(nameAsString, function() {
+    var result = queryResult(typeID, stringVal);
+    assert.strictEqual(result, expected);
+    return result;
+  });
+};
+
+
+test('parses character types', function() {
+  testForType('character (char)', 18, 'xyz', 'xyz');
+  testForType('character varying (varchar)', 1043, 'xyz!', 'xyz!');
+  testForType('text', 25, 'asdfasdf asdf', 'asdfasdf asdf');
+});
+
+test('parses numeric types', function() {
+  testForType('bigInt (int8)', 20, "1234567890", 1234567890);
+  testForType('integer (int4)', 23, '1234567', 1234567);
+  testForType('smallint (int2)', 21, '123', 123);
+  testForType('numeric (decimal)', 1700, '123.456', 123.456);
+  testForType('real (float4)', 700, '123.457', 123.457);
+  testForType('doubl precision (float8)', 701, '123.4567', 123.4567);
+});