ISO 15118-4:2018以抽象测试套件（ATS）的形式规定了根据ISO 15118-2实施EVCC或SECC的被测系统（SUT）的一致性测试。这些一致性测试规定了SUT能力和行为的测试，并根据ISO 15118-2中规定的一致性要求和供应商声明的SUT实施能力检查观察到的内容
ATS内的能力测试检查SUT的可观察能力是否符合ISO 15118中定义的静态一致性要求- 2.ATS的行为测试在ISO 15118-2中定义的所有动态一致性要求范围内以及SUT的能力范围内，尽可能彻底地检查实施情况（见注释）
测试体系结构与ATS相对应。本文档中的一致性测试用例是利用该测试体系结构描述的，并在ISO/OSI网络层（第3层）及以上的TTCN-3核心语言中指定。ISO 15118中描述了数据链路层（第2层）和物理层（第1层）的一致性测试用例- 5.明确详细说明了具有重叠范围的测试用例
本文件不包括ISO 15118-2中引用的其他标准的具体测试，例如IETF RFCs。此外，本文件中规定的一致性测试不包括性能评估，也不包括实现的稳健性或可靠性。它们不能对抽象服务原语的物理实现、系统如何实现、它如何提供任何请求的服务，以及协议实现的环境进行判断。 此外，本文档中定义的测试用例只考虑定义ISO 15118-2的通信协议。不考虑电动汽车供电设备和电动汽车之间的功率流
注1:实际限制使得不可能定义一个详尽的测试套件，而经济方面的考虑可能会进一步限制测试。因此，本文档的目的是增加不同实现能够互通的可能性。这是通过协议测试套件来验证它们来实现的，从而增加每个实现符合协议规范的信心。 然而，指定的协议测试套件不能保证符合规范，因为它检测错误，而不是它们的缺失。因此，仅对测试套件的一致性不能保证互通。它所做的是让人们相信一个实现具有所需的功能，并且它的行为在典型的通信实例中一致
注2:本文件与ISO 15118-5中定义的一致性测试存在一些相互依赖性，这些测试是由基础协议规范（e。 g、 用于睡眠模式）

ISO 15118-4:2018 specifies conformance tests in the form of an Abstract Test Suite (ATS) for a System Under Test (SUT) implementing an EVCC or SECC according to ISO 15118-2. These conformance tests specify the testing of capabilities and behaviors of an SUT as well as checking what is observed against the conformance requirements specified in ISO 15118-2 and against what the supplier states the SUT implementation's capabilities are.
The capability tests within the ATS check that the observable capabilities of the SUT are in accordance with the static conformance requirements defined in ISO 15118-2. The behavior tests of the ATS examine an implementation as thoroughly as is practical over the full range of dynamic conformance requirements defined in ISO 15118-2 and within the capabilities of the SUT (see NOTE).
A test architecture is described in correspondence to the ATS. The conformance test cases in this document are described leveraging this test architecture and are specified in TTCN-3 Core Language for ISO/OSI Network Layer (Layer 3) and above. The conformance test cases for the Data Link Layer (Layer 2) and Physical Layer (Layer 1) are described in ISO 15118-5. Test cases with overlapping scopes are explicitly detailed.
This document does not include specific tests of other standards referenced within ISO 15118-2, e.g. IETF RFCs. Furthermore, the conformance tests specified in this document do not include the assessment of performance nor robustness or reliability of an implementation. They cannot provide judgments on the physical realization of abstract service primitives, how a system is implemented, how it provides any requested service, nor the environment of the protocol implementation. Furthermore, the test cases defined in this document only consider the communication protocol defined ISO 15118-2. Power flow between the EVSE and the EV is not considered.
NOTE 1 Practical limitations make it impossible to define an exhaustive test suite, and economic considerations can restrict testing even further. Hence, the purpose of this document is to increase the probability that different implementations are able to interwork. This is achieved by verifying them by means of a protocol test suite, thereby increasing the confidence that each implementation conforms to the protocol specification. However, the specified protocol test suite cannot guarantee conformance to the specification since it detects errors rather than their absence. Thus conformance to a test suite alone cannot guarantee interworking. What it does do is give confidence that an implementation has the required capabilities and that its behavior conforms consistently in representative instances of communication.
NOTE 2 This document has some interdependencies to the conformance tests defined in ISO 15118-5 which result from ISO/OSI cross layer dependencies in the underlying protocol specification (e.g. for sleep mode)