4.4. Step - 02 : Add feature files

Now, let’s add Feature/Scenario file. This is very similar to BDD - Python / Step - 01 : Initial structure

The updated directory structure would be like this:

.
|-- features
|   |-- step_definitions
|   |   `-- steps_addition.cpp
|   |-- CMakeLists.txt
|   `-- simple-addition.feature
`-- CMakeLists.txt

• features/simple-addition.feature

  This new file has the Feature/Scenario steps for the BDD Tests.

  # features/sample-addition.feature
  
  Feature: Simple Addition
  
      Showcase simple addition for the BDD Book.
  
      Scenario: Addition of single digit numbers
          Given I have '1' and '3'
          When I add them
          Then The result must be '4'
  
      Scenario: Addition of double digit numbers
          Given I have '70' and '29'
          When I add them
          Then The result must be '99'
  

• features/CMakeLists.txt

  We update features/CMakeLists.txt to also include *.feature files. This is totally optional, but in cases where we use CMake to generate IDEs files, these *.feature would be part of the IDE and it would help edit those files directly from the IDE.

  PROJECT(features)
  
  FILE(
      GLOB
      all_files
      step_definitions/*.cpp
      step_definitions/*.hpp
      *.feature
  )
  
  ADD_EXECUTABLE(${PROJECT_NAME} ${all_files})
  
  TARGET_LINK_LIBRARIES(
      ${PROJECT_NAME}
      CucumberCpp::cucumber-cpp
  )
  

4.4.1. Changes

As compared to previous step (Step - 01 : Setup of C/C++ Code), the diff is:

Files old/CMakeLists.txt and new/CMakeLists.txt are identical
diff '--unified=3' --new-file --ignore-all-space --text --recursive --show-c-function --report-identical-files old/features/CMakeLists.txt new/features/CMakeLists.txt
--- old/features/CMakeLists.txt	2022-12-11 00:00:00.000000000 +0530
+++ new/features/CMakeLists.txt	2022-12-11 00:00:00.000000000 +0530
@@ -5,6 +5,7 @@ FILE(
     all_files
     step_definitions/*.cpp
     step_definitions/*.hpp
+    *.feature
 )
 
 ADD_EXECUTABLE(${PROJECT_NAME} ${all_files})
diff '--unified=3' --new-file --ignore-all-space --text --recursive --show-c-function --report-identical-files old/features/simple-addition.feature new/features/simple-addition.feature
--- old/features/simple-addition.feature	1970-01-01 05:30:00.000000000 +0530
+++ new/features/simple-addition.feature	2022-12-11 00:00:00.000000000 +0530
@@ -0,0 +1,16 @@
+# features/sample-addition.feature
+
+Feature: Simple Addition
+
+    Showcase simple addition for the BDD Book.
+
+    Scenario: Addition of single digit numbers
+        Given I have '1' and '3'
+        When I add them
+        Then The result must be '4'
+
+    Scenario: Addition of double digit numbers
+        Given I have '70' and '29'
+        When I add them
+        Then The result must be '99'
+
Files old/features/step_definitions/steps_addition.cpp and new/features/step_definitions/steps_addition.cpp are identical