rework bazel doc

bazel/README.md

@@ -17,11 +17,12 @@ Dockers [Alpine, Archlinux, Centos, Debian, Fedora, OpenSuse, Ubuntu]: [![Status
 [docker_svg]: https://github.com/google/or-tools/actions/workflows/bazel_docker.yml/badge.svg?branch=master
 [docker_link]: https://github.com/google/or-tools/actions/workflows/bazel_docker.yml
 
-
 ## Introduction
+
 <nav for="bazel"> |
-<a href="#deps">Dependencies</a> |
-<a href="#build">Compilation</a> |
+<a href="#dependencies">Dependencies</a> |
+<a href="#compilation">Compilation</a> |
+<a href="#testing">Testing</a> |
 <a href="#integration">Integration</a> |
 <a href="doc/ci.md">CI</a> |
 </nav>
@@ -33,8 +34,8 @@ you can download it for free from <https://bazel.build/>.
 **warning: Currently OR-Tools Bazel doesn't support Python, Java nor .Net,
 please use the Makefile or CMake based build instead.**
 
-<a name="deps"></a>
 ## Dependencies
+
 OR-Tools depends on severals mandatory libraries.
 
 * Google Abseil-cpp,
@@ -44,8 +45,8 @@ OR-Tools depends on severals mandatory libraries.
 * SCIP,
 * GLPK (GNU Linear Programming Kit)
 
-<a name="build"></a>
 ## Compilation
+
 You must compile OR-Tools using C++17:
 
 * on UNIX:
@@ -58,7 +59,22 @@ You must compile OR-Tools using C++17:
   bazel build --cxxopt="-std:c++17" //...:all
   ```
 
-<a name="integration"></a>
-## Integrating OR-Tools in your Bazel Project
-You can take a look at the template project:
+## Testing
+
+You must compile OR-Tools using C++17:
+
+* on UNIX:
+  ```sh
+  bazel test --cxxopt=-std=c++17 //...:all
+  ```
+
+* on Windows when using MSVC:
+  ```sh
+  bazel test --cxxopt="-std:c++17" //...:all
+  ```
+
+## Integration
+
+To integrate OR-Tools in your own Bazel project,
+you can take a look at the template project:
 [or-tools/bazel\_or-tools](https://github.com/or-tools/bazel_or-tools).