Update instructions for UT creation (#102)

* Update instructions for UT creation

* Remove unecessary step

---------

Co-authored-by: Thomas Boyer-Chammard <49786685+thomas-bc@users.noreply.github.com>

Author: AlesKus

docs/led-blinker.md

@@ -761,17 +761,7 @@ This exercise will walk through development of basic unit tests for the `Led` co
 
 To start off, use `fprime-util` to generate a unit test outline for the `Led` component.
 
-First, register unit tests for the `Led` component with the build system by adding these lines at the very end of the component `CMakeLists.txt` file in your `led-blinker/Components/Led` directory, **after** the `register_fprime_module()` call.
-
-```
-set(UT_SOURCE_FILES
-    "${CMAKE_CURRENT_LIST_DIR}/Led.fpp"
-)
-set(UT_AUTO_HELPERS ON) # Additional Unit-Test autocoding
-register_fprime_ut()
-```
-
-Next, generate a unit test build cache by running the following terminal commands:
+First, generate a unit test build cache by running the following terminal commands:
 
 ```shell
 #In led-blinker/Components/Led
@@ -780,7 +770,6 @@ fprime-util generate --ut
 > [!NOTE]
 > Unit tests run with special build settings and as such need their own build cache generated.
 
-
 Next we will generate unit test template files. This is similar to the component implementations we have run, but will set up the complete unit test harness. 
 
 To do so, run the implementation command in the terminal within your `led-blinker/Components/Led` directory:
@@ -789,24 +778,29 @@ To do so, run the implementation command in the terminal within your `led-blinke
 fprime-util impl --ut
 ```
 
-This step should create the files `LedTester.cpp`, `LedTester.hpp`, and `LedTestMain.cpp` in your current directory. Move them to a new subdirectory called `test/ut`.
+This step should create the files `LedTester.template.cpp`, `LedTester.template.hpp`, and `LedTestMain.template.cpp` in `led-blinker/Components/Led/test/ut`.
 
-This is done with:
-```shell
-#In led-blinker/Components/Led
-mkdir -p test/ut
-mv LedTest* test/ut/
+Since this is the start of the test's implementation, we use the generated template files for our initial test implementation. Inside your `led-blinker/Components/Led/test/ut` directory, rename the files removing the `.template` suffix:
+
+```bash
+# In led-blinker/Components/Led/test/ut
+mv LedTester.template.hpp LedTester.hpp
+mv LedTester.template.cpp LedTester.cpp
+mv LedTestMain.template.cpp LedTestMain.cpp
 ```
 
-Next, update the `CMakeLists.txt` file in your `led-blinker/Components/Led` directory to add those files to the list of unit-test source files. That section should look like this:
+Then, register the unit test files with the build system by uncommenting these lines at the very end of the component `CMakeLists.txt` file in your `led-blinker/Components/Led` directory:
 
 ```cmake
 set(UT_SOURCE_FILES
-    "${CMAKE_CURRENT_LIST_DIR}/Led.fpp"
-    "${CMAKE_CURRENT_LIST_DIR}/test/ut/LedTestMain.cpp"
-    "${CMAKE_CURRENT_LIST_DIR}/test/ut/LedTester.cpp"
+  "${CMAKE_CURRENT_LIST_DIR}/Led.fpp"
+  "${CMAKE_CURRENT_LIST_DIR}/test/ut/LedTestMain.cpp"
+  "${CMAKE_CURRENT_LIST_DIR}/test/ut/LedTester.cpp"
+)
+set(UT_MOD_DEPS
+  STest
 )
-set(UT_AUTO_HELPERS ON) # Additional Unit-Test autocoding
+set(UT_AUTO_HELPERS ON)
 register_fprime_ut()
 ```