topic_info_variant_test.cpp

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/*
 * Copyright (c) 2011, Willow Garage, Inc.
 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
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 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#include <gtest/gtest.h>

#include <QVariant>

#include "rviz/properties/topic_info_variant.h"

TEST( RosTopicVar, basic )
{
  ros::master::TopicInfo rtv;
  rtv.datatype = "std_msgs/String";
  rtv.name = "/ns/chatter";

  QVariant var = 7;
  EXPECT_EQ( var.type(), QVariant::Int );
  EXPECT_FALSE( var.canConvert<ros::master::TopicInfo>() );
  
  var = QVariant::fromValue( rtv );

// For some reason these are not equal!  Looks like QVariant has a
// different idea about typeIds than qMetaTypeId does.  Result: don't
// use qMetaTypeId<>() to identify QVariant types, just use
// QVariant::canConvert<>().
//
//  EXPECT_EQ( var.type(), qMetaTypeId<ros::master::TopicInfo>() );

  EXPECT_TRUE( var.canConvert<ros::master::TopicInfo>() );

  QVariant var2 = var;

  ros::master::TopicInfo rtv2 = var.value<ros::master::TopicInfo>();
  EXPECT_EQ( "std_msgs/String", rtv2.datatype );
  EXPECT_EQ( "/ns/chatter", rtv2.name );

  ros::master::TopicInfo rtv3 = var2.value<ros::master::TopicInfo>();
  EXPECT_EQ( "std_msgs/String", rtv3.datatype );
  EXPECT_EQ( "/ns/chatter", rtv3.name );
}

int main(int argc, char **argv){
  testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}