CANoe的demo里面有个Gateway Tester。（我很纳闷，不是有CAPL和.net支持，为啥还要搞个XML，看来Vector公司也是乱啊）
首先研究一下这个VXT文件。打开其实是一个xml文件。这个xml文件是通过VBA生成的。
根元素是testmodule，查了一下Canoe的说明如下：
testmodule是一个测试序列，通过特定的测试函数用于测试控制单元和网络。它可以用于验证各个开发步骤，检查模型和回归验证，以及整合测试。
testmodule可以通过Test Automation Editor（这个玩意儿不知道哪里有）来编辑，并可在Canoe的simulation和Test setup运行。
xml格式的testmodule包含了一系列预设的可参数化得测试函数和控制函数。它可以包含CAPL格式的函数，测试用例或.net格式的测试用例。
xml格式的testmodule包含：
任意数目的测试用例，可以组合进test group
语法格式：
<testmodule title="Title of test module " version="1.0" xmlns="Namespace of test module (as html)" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="Namespace with assigned schema-file"> </testmodule>
其中title和version是必须的的属性。
engineer、testsetup、sut没啥好说的。。。。
conditions的介绍如下：
constraints和conditions是当执行一个测试用例的时候被同步检查的条件。这些条件在test module或test group或test case中被详细描述。
语法格式：
<conditions> List of test conditions </conditions>
requestresponsecheck，canoe的说明如下：
这个检查，监测是面向消息的，但simul没有用到
这个检查用于验证处理时间，一个信号从一个消息转换成另一个消息需要多长时间。
对于用于检查时间的情况，必须在到达超时之前发送响应消息
对于用于检查值得情况，响应消息的物理信号值会与请求消息的物理信号值或常值进行核对。
有两种可用的配置：
第一种配置one2one = Yes，每个请求只允许一个响应，所有其他响应都会导致检查失败。在检查的开始阶段请求和相应消息都会被忽略，忽略的间隔时间是最短超时时间和第一次的路由时间。
第一种配置one2one = NO，每个请求允许多个响应，然而对附加响应的数据一致性进行了监视，这些响应的消息内容也必须满足condition里面的内容。如果没有实现数据一致性，检查将失败。数据一致性的间隔时间从第一条路由时间或超时时间。
在这个check的<response>部分，不仅<signal>和<byte>属性可以用到，<signalref>和<byteref>属性也可以被用到。它们的引用直接与请求消息有关。
对于元素<signalref>也可以指定值即使它没有被rooted。
当使用<mostmsg>作为<response>的参数时，<param>可以与<byte>一起使用来描述消息内容。
<requestresponsecheck title="..." mintime="..." timeout="..." observetime="..." one2one="yes|no"> <request> Definition of the trigger message <canmsg/> or <linframe/> or <mostmsg/> or <frframe/> or <frpdu/> </request> <response> Definition of the independent message It is possible to refer to the trigger message <canmsg/> or <linframe/> or <mostmsg/> or <frframe/> or <frpdu/> </response> </requestresponsecheck>
以上定义了检验的标准。下面是测试用例使用：
<testcase> 包含测试执行的实际指令
使用语法： title和ident是必须的
<testcase ident=" ID of the test case, e.g. number " title="Title of test case" version="1.0" variants="A" > </testcase>
<Initialize>中包含一系列被赋值的CAN信号，它们将被发送到总线上去。第二步，会有一个指定的等待时间。这个等待时间允许系统"投入"，这样系统希望的值会被实际改变。
使用语法：
<initialize title="Headline for the primitive, visible in report" wait="Wait time in ms"> List of CAN signals/messages, LIN signals, FlexRay signals MOST messages and environment/system variables </initialize>
再来详细说一下cansignal、byte，用来定义signal信号的。
<cansignal name="Signal name" msg="Message name" node="Node name" bus="Bus name">Value</cansignal>
<byte pos="Byte position from 0">Value</byte>
<?xml version="1.0" encoding="iso-8859-1"?>
<!-- Generated from Excel -->
<!--Vector Test Automation Editor 1.1.55.0-->
<testmodule title="Gateway Tester" version="" xmlns="http://www.vector-informatik.de/CANoe/TestModule/1.16">
<engineer>
<info>
<name>Name</name>
<description>vislke</description>
</info>
</engineer>
<testsetup>
<info>
<name>Version of test configuration</name>
<description>1.2</description>
</info>
<info>
<name>Test configuration created by</name>
<description>Stefan</description>
</info>
</testsetup>
<sut>
<info>
<name>ECU name</name>
<description>Gateway</description>
</info>
<info>
<name>ECU version</name>
<description>0.99</description>
</info>
</sut>
<conditions>
<!-- relates to line # 8 in the excel file -->
<requestresponsecheck timeout=" 1000ms" mintime="100us">
<request>
<canmsg id="ABSdata" bus="Engine" />
</request>
<response>
<canmsg id="EngineInfo" bus="Comfort">
<signalref name="Comf_CarSpeed" refname="CarSpeed" />
</canmsg>
</response>
</requestresponsecheck>
<!-- relates to line # 9 in the excel file -->
<requestresponsecheck timeout=" 1000ms" mintime="100us">
<request>
<canmsg id="ABSdata" bus="Engine" />
</request>
<response>
<canmsg id="EngineInfo" bus="Comfort">
<signalref name="Comf_GearLock" refname="Gear_Lock" />
</canmsg>
</response>
</requestresponsecheck>
<!-- relates to line # 10 in the excel file -->
<requestresponsecheck timeout=" 1000ms" mintime="100us">
<request>
<canmsg id="EngineData" bus="Engine" />
</request>
<response>
<canmsg id="EngineInfo" bus="Comfort">
<signalref name="Comf_EngSpeed" refname="EngineSpeed" />
</canmsg>
</response>
</requestresponsecheck>
<!-- relates to line # 11 in the excel file -->
<requestresponsecheck timeout=" 1000ms" mintime="100us">
<request>
<canmsg id="EngineData" bus="Engine" />
</request>
<response>
<canmsg id="EngineInfo" bus="Comfort">
<signalref name="Comf_EngTemp" refname="EngineTemp" />
</canmsg>
</response>
</requestresponsecheck>
<!-- relates to line # 12 in the excel file -->
<requestresponsecheck timeout=" 1000ms" mintime="100us">
<request>
<canmsg id="GearBoxInfo" bus="Engine" />
</request>
<response>
<canmsg id="EngineInfo" bus="Comfort">
<signalref name="Comf_Gear" refname="GearBox" />
</canmsg>
</response>
</requestresponsecheck>
<!-- relates to line # 13 in the excel file -->
<requestresponsecheck timeout=" 2000us" mintime="100us">
<request>
<canmsg id="IgnitionInfo" bus="Comfort" />
</request>
<response>
<canmsg id="Ignition_key" bus="Engine">
<byteref pos=" 0" refpos=" 0" />
</canmsg>
</response>
</requestresponsecheck>
<!-- relates to line # 14 in the excel file -->
<requestresponsecheck timeout=" 1000ms" mintime="100us">
<request>
<canmsg id="LSeat_Sensoric" bus="Comfort" />
</request>
<response>
<canmsg id="ComfortStatus" bus="Engine">
<signalref name="DriverDetect" refname="Comf_DriverDetection" />
</canmsg>
</response>
</requestresponsecheck>
<!-- relates to line # 15 in the excel file -->
<requestresponsecheck timeout=" 1000ms" mintime="100us">
<request>
<canmsg id="RSeat_Sensoric" bus="Comfort" />
</request>
<response>
<canmsg id="ComfortStatus" bus="Engine">
<signalref name="PassengerDetect" refname="Comf_PassengerDetection" />
</canmsg>
</response>
</requestresponsecheck>
</conditions>
<!-- This gateway checks can be used either in an isolated configuration (the test stimulates)
or within a setup where an extra stimulation is not needed, because other
ECUs are sending the stimulation messages.
This can be controlled within the generation dialog. -->
<!-- Stimulation by the test case has been selected during generation -->
<!-- Start: The test cases itself -->
<testcase title="Stimulate values for signal CarSpeed" ident="">
<initialize title="" wait=" 3000ms">
<cansignal name="CarSpeed" msg="ABSdata" bus="Engine">0</cansignal>
</initialize>
<initialize title="" wait=" 3000ms">
<cansignal name="CarSpeed" msg="ABSdata" bus="Engine">255</cansignal>
</initialize>
</testcase>
<testcase title="Stimulate values for signal Gear_Lock" ident="">
<initialize title="" wait=" 3000ms">
<cansignal name="Gear_Lock" msg="ABSdata" bus="Engine">1</cansignal>
</initialize>
<initialize title="" wait=" 3000ms">
<cansignal name="Gear_Lock" msg="ABSdata" bus="Engine">2</cansignal>
</initialize>
</testcase>
<testcase title="Stimulate values for signal EngineSpeed" ident="">
<initialize title="" wait=" 3000ms">
<cansignal name="EngineSpeed" msg="EngineData" bus="Engine">0</cansignal>
</initialize>
<initialize title="" wait=" 3000ms">
<cansignal name="EngineSpeed" msg="EngineData" bus="Engine">8000</cansignal>
</initialize>
</testcase>
<testcase title="Stimulate values for signal EngineTemp" ident="">
<initialize title="" wait=" 3000ms">
<cansignal name="EngineTemp" msg="EngineData" bus="Engine">-50</cansignal>
</initialize>
<initialize title="" wait=" 3000ms">
<cansignal name="EngineTemp" msg="EngineData" bus="Engine">150</cansignal>
</initialize>
</testcase>
<testcase title="Stimulate values for signal GearBox" ident="">
<initialize title="" wait=" 3000ms">
<cansignal name="GearBox" msg="GearBoxInfo" bus="Engine">0</cansignal>
</initialize>
<initialize title="" wait=" 3000ms">
<cansignal name="GearBox" msg="GearBoxInfo" bus="Engine">8</cansignal>
</initialize>
</testcase>
<testcase title="Stimulate values for message Ignition" ident="">
<initialize title="" wait=" 6000us">
<canmsg id="IgnitionInfo" bus="Comfort">
<byte pos=" 0 ">0x12</byte>
</canmsg>
</initialize>
</testcase>
<testcase title="Stimulate values for signal Comf_DriverDetection" ident="">
<initialize title="" wait=" 3000ms">
<cansignal name="Comf_DriverDetection" msg="LSeat_Sensoric" bus="Comfort">0</cansignal>
</initialize>
<initialize title="" wait=" 3000ms">
<cansignal name="Comf_DriverDetection" msg="LSeat_Sensoric" bus="Comfort">5</cansignal>
</initialize>
</testcase>
<testcase title="Stimulate values for signal Comf_PassengerDetection" ident="">
<initialize title="" wait=" 3000ms">
<cansignal name="Comf_PassengerDetection" msg="RSeat_Sensoric" bus="Comfort">0</cansignal>
</initialize>
<initialize title="" wait=" 3000ms">
<cansignal name="Comf_PassengerDetection" msg="RSeat_Sensoric" bus="Comfort">5</cansignal>
</initialize>
</testcase>
<testcase title="Wait for 10 more seconds after the stimulation and purely observe" ident="">
<untilend title="" wait="10s" />
</testcase>
<!-- End: The test cases itself -->
</testmodule>