fix for gh-issue #26

lib/native.js

@@ -119,9 +119,18 @@ var NativeQuery = function(text, values, callback) {
   if(this.values) {
     for(var i = 0, len = this.values.length; i < len; i++) {
       var item = this.values[i];
-      if(item instanceof Date) {
-        this.values[i] = JSON.stringify(item);
-      } else {
+      switch(typeof item) {
+      case 'undefined':
+        this.values[i] = null;
+        break;
+      case 'object':
+        this.values[i] = item === null ? null : JSON.stringify(item);
+        break;
+      case 'string':
+        //value already string
+        break;
+      default:
+        //numbers
         this.values[i] = item.toString();
       }
     }
@@ -137,9 +146,8 @@ var p = NativeQuery.prototype;
 var mapRowData = function(row) {
   var result = {};
   for(var i = 0, len = row.length; i < len; i++) {
-    var item = row[i];
-    var parser = types.getStringTypeParser(item.type);
-    result[item.name] = parser(item.value);
+    var item = row[i];    
+    result[item.name] = item.value == null ? null : types.getStringTypeParser(item.type)(item.value);
   }
   return result;
 }
@@ -174,5 +182,5 @@ module.exports = {
   Client: ctor,
   connect: pool.connect,
   end: pool.end,
-  defaults: require(__dirname + '/defaults')  
+  defaults: require(__dirname + '/defaults')
 };

lib/types.js

@@ -25,6 +25,10 @@ var parseDate = function(isoDate) {
   var dateMatcher = /(\d{4})-(\d{2})-(\d{2}) (\d{2}):(\d{2}):(\d{2})(\.\d{1,})?/;
 
   var match = dateMatcher.exec(isoDate);
+  //could not parse date
+  if(!match) {
+    return null;
+  }
   var year = match[1];
   var month = parseInt(match[2],10)-1;
   var day = match[3];

src/binding.cc

@@ -211,6 +211,7 @@ public:
     if(result == 1) {
       return Undefined();
     }
+    self->EmitLastError();
     THROW("Postgres returned non-1 result from query dispatch.");
   }
 
@@ -444,12 +445,22 @@ protected:
       int fieldCount = PQnfields(result);
       for(int fieldNumber = 0; fieldNumber < fieldCount; fieldNumber++) {
         Local<Object> field = Object::New();
+        //name of field
         char* fieldName = PQfname(result, fieldNumber);
-        int fieldType = PQftype(result, fieldNumber);
-        char* fieldValue = PQgetvalue(result, rowNumber, fieldNumber);
         field->Set(name_symbol, String::New(fieldName));
-        field->Set(value_symbol, String::New(fieldValue));
+
+        //oid of type of field
+        int fieldType = PQftype(result, fieldNumber);
         field->Set(type_symbol, Integer::New(fieldType));
+
+        //value of field
+        if(PQgetisnull(result, rowNumber, fieldNumber)) {
+          field->Set(value_symbol, Null());
+        } else {
+          char* fieldValue = PQgetvalue(result, rowNumber, fieldNumber);
+          field->Set(value_symbol, String::New(fieldValue));
+        }
+
         row->Set(Integer::New(fieldNumber), field);
       }
 
@@ -578,6 +589,8 @@ private:
           return 0;
         }
         paramValues[i] = cString;
+      } else if(val->IsNull()) {
+        paramValues[i] = NULL;
       } else {
         //a paramter was not a string
         LOG("Parameter not a string");

test/integration/client/notice-tests.js

@@ -22,7 +22,7 @@ test('emits notify message', function() {
           assert.equal(msg.channel, 'boom');
           assert.ok(msg.payload == 'omg!' /*9.x*/ || msg.payload == '' /*8.x*/, "expected blank payload or correct payload but got " + msg.message)
           client.end()
-        }, 500)
+        }, 100)
 
       });
       assert.emits(otherClient, 'notification', function(msg) {

test/integration/client/type-coercion-tests.js

@@ -4,35 +4,36 @@ var connectionString = helper.connectionString();
 var testForTypeCoercion = function(type){
   helper.pg.connect(connectionString, function(err, client) {
     assert.isNull(err)
-    client.query("create temp table test_type(col " + type.name + ")");
+    client.query("create temp table test_type(col " + type.name + ")", assert.calls(function(err, result) {
+      assert.isNull(err);
+      test("Coerces " + type.name, function() {
+        type.values.forEach(function(val) {
 
-    test("Coerces " + type.name, function() {
-      type.values.forEach(function(val) {
+          var insertQuery = client.query('insert into test_type(col) VALUES($1)',[val],assert.calls(function(err, result) {
+            assert.isNull(err);
+          }));
 
-        var insertQuery = client.query({
-          name: 'insert type test ' + type.name,
-          text: 'insert into test_type(col) VALUES($1)',
-          values: [val]
+          var query = client.query({
+            name: 'get type ' + type.name ,
+            text: 'select col from test_type'
+          });
+          query.on('error', function(err) {
+            console.log(err);
+            throw err;
+          });
+
+          assert.emits(query, 'row', function(row) {
+            assert.strictEqual(row.col, val, "expected " + type.name + " of " + val + " but got " + row[0]);
+          }, "row should have been called for " + type.name + " of " + val);
+
+          client.query('delete from test_type');
         });
 
-        var query = client.query({
-          name: 'get type ' + type.name ,
-          text: 'select col from test_type'
+        client.query('drop table test_type', function() {
+          sink.add();
         });
-
-        assert.emits(query, 'row', function(row) {
-          assert.strictEqual(row.col, val, "expected " + type.name + " of " + val + " but got " + row[0]);
-        });
-
-        client.query({
-          name: 'delete values',
-          text: 'delete from test_type'
-        });
-        sink.add();
-      });
-
-      client.query('drop table test_type');
-    });
+      })
+    }));
   })
 };
 
@@ -82,14 +83,15 @@ var valueCount = 0;
 types.forEach(function(type) {
   valueCount += type.values.length;
 })
-sink = new helper.Sink(valueCount, function() {
+sink = new helper.Sink(types.length, function() {
   helper.pg.end();
 })
 
-types.forEach(testForTypeCoercion);
+types.forEach(function(type) {
+  testForTypeCoercion(type)
+});
 
 test("timestampz round trip", function() {
-
   var now = new Date();
   var client = helper.client();
   client.on('error', function(err) {