Merge pull request #7 from anihex/master

Added IsZero for null.Time

time.go

@@ -95,6 +95,11 @@ func (t Time) Ptr() *time.Time {
 	return &t.Time
 }
 
+// IsZero returns true for an invalid Time's value, for potential future omitempty support.
+func (t Time) IsZero() bool {
+	return !t.Valid
+}
+
 // Scan implements the Scanner interface.
 func (t *Time) Scan(value interface{}) error {
 	var err error

time_test.go

@@ -114,6 +114,18 @@ func TestTimePointer(t *testing.T) {
 	}
 }
 
+func TestTimeIsZero(t *testing.T) {
+	ti := TimeFrom(time.Now())
+	if ti.IsZero() {
+		t.Errorf("IsZero() should be false")
+	}
+
+	null := TimeFromPtr(nil)
+	if !null.IsZero() {
+		t.Errorf("IsZero() should be true")
+	}
+}
+
 func TestTimeScanValue(t *testing.T) {
 	var ti Time
 	err := ti.Scan(timeValue)