代码覆盖率测试生成
此示例说明如何使用 Simulink® Design Verifier™ 生成测试用例以获得完整代码覆盖率。
首先，您需要收集配置为软件在环 (SIL) 仿真模式的示例模型的代码覆盖率。然后，使用 Simulink® Design Verifier™ 创建用于生成测试用例的测试套件。最后，在 SIL 仿真模式下执行生成的测试用例，以验证完整覆盖率。
检查产品可用性
确保您的计算机上安装了 Simulink® Coder™ 和 Embedded Coder™ 软件。
if ~(license('test', 'Real-Time_Workshop') && ... license('test','RTW_Embedded_Coder')) return end
初始设置
确保已打开模型的未编辑版本。
model = 'sldv_cruise_control';
close_system(model, 0)
open_system(model)
为基于 SIL 的测试生成配置模型
1.在配置参数窗口中，点击代码生成并将系统目标文件设置为 ert.tlc。或者，输入：
set_param(model,'SystemTargetFile','ert.tlc');
2.点击硬件实现，然后将设备供应商和设备类型设置为您的 SIL 系统的供应商和类型。例如，对于 64 位 Linux 计算机，请将设备供应商设置为 Intel，并将设备类型设置为 x-86-64(Windows)。或者，输入：
if ismac lProdHWDeviceType = 'Intel->x86-64 (Mac OS X)'; elseif isunix lProdHWDeviceType = 'Intel->x86-64 (Linux 64)'; else lProdHWDeviceType = 'Intel->x86-64 (Windows64)'; end set_param(model, 'ProdHWDeviceType', lProdHWDeviceType);
查找用于覆盖率计算的测试用例
使用 Simulink® Design Verifier™ 分析 sldv_cruise_control 模型，以生成可提高代码覆盖率的测试套件。设置 Simulink® Design Verifier™ 选项，以便为顶层模型生成实现 MCDC 覆盖率的测试用例。
opts = sldvoptions; opts.TestgenTarget = 'GenCodeTopModel'; opts.Mode = 'TestGeneration'; [~, files] = sldvrun(model, opts, true);
### Starting build procedure for: sldv_cruise_control ### Successful completion of build procedure for: sldv_cruise_control ### Preparing to start SIL simulation ... Building with 'gcc'. MEX completed successfully. ### Starting SIL simulation for component: sldv_cruise_control ### Application stopped ### Stopping SIL simulation for component: sldv_cruise_control ### Searching for referenced models in model 'HARNESS_4_SLDV_SIL_CODEGEN_VALIDATION'. ### Total of 1 models to build. ### Searching for referenced models in model 'sldv_cruise_control'. ### Total of 1 models to build. ### Starting build procedure for: sldv_cruise_control ### Generated code for 'sldv_cruise_control' is up to date because no structural, parameter or code replacement library changes were found. ### Successful completion of build procedure for: sldv_cruise_control Build Summary 0 of 1 models built (1 models already up to date) Build duration: 0h 0m 2.1644s ### Preparing to start SIL simulation ... ### Starting SIL simulation for component: sldv_cruise_control ### Application stopped ### Stopping SIL simulation for component: sldv_cruise_control ### Completed code coverage analysis ### Starting SIL simulation for component: sldv_cruise_control ### Application stopped ### Stopping SIL simulation for component: sldv_cruise_control ### Completed code coverage analysis ### Starting SIL simulation for component: sldv_cruise_control ### Application stopped ### Stopping SIL simulation for component: sldv_cruise_control ### Completed code coverage analysis ### Starting SIL simulation for component: sldv_cruise_control ### Application stopped ### Stopping SIL simulation for component: sldv_cruise_control ### Completed code coverage analysis
注意：当您运行脚本时，SIL 测试生成会重新生成并重新编译代码。
验证完整覆盖率
sldvruntest 函数使用生成的测试套件来仿真模型。cvhtml 函数生成覆盖率报告，指示 sldvdemo_cruise_control 模型的最终覆盖率。
[~, finalCov] = sldvruntest(model, files.DataFile, [], true);
cvhtml('sil_final_coverage', finalCov);
close_system(model, 0);
### Searching for referenced models in model 'HARNESS_4_SLDV_SIL_CODEGEN_VALIDATION'. ### Total of 1 models to build. ### Searching for referenced models in model 'sldv_cruise_control'. ### Total of 1 models to build. ### Starting build procedure for: sldv_cruise_control ### Generated code for 'sldv_cruise_control' is up to date because no structural, parameter or code replacement library changes were found. ### Successful completion of build procedure for: sldv_cruise_control Build Summary 0 of 1 models built (1 models already up to date) Build duration: 0h 0m 1.6951s ### Preparing to start SIL simulation ... Building with 'gcc'. MEX completed successfully. ### Starting SIL simulation for component: sldv_cruise_control ### Application stopped ### Stopping SIL simulation for component: sldv_cruise_control ### Completed code coverage analysis ### Starting SIL simulation for component: sldv_cruise_control ### Application stopped ### Stopping SIL simulation for component: sldv_cruise_control ### Completed code coverage analysis ### Starting SIL simulation for component: sldv_cruise_control ### Application stopped ### Stopping SIL simulation for component: sldv_cruise_control ### Completed code coverage analysis
注意：当您运行脚本时，SIL 测试生成会重新生成并重新编译代码。
