feat: make CALL option in assert_call function to be optional (#278)

Signed-off-by: Alfi Maulana <alfi.maulana.f@gmail.com>

README.md

@@ -69,8 +69,7 @@ assert(IS_DIRECTORY "${CMAKE_STARTER_DIR}")
 assert_execute_process(
   git -C "${CMAKE_STARTER_DIR}" rev-parse --is-inside-work-tree)
 
-assert_call(
-  CALL git_clone https://github.com GITHUB_DIR
+assert_call(git_clone https://github.com GITHUB_DIR
   EXPECT_FATAL_ERROR "failed to clone 'https://github.com'")
 ```
 
@@ -175,7 +174,7 @@ Performs an assertion on the given command call.
 
 ```cmake
 assert_call(
-  CALL <command> [<arguments>...]
+  [CALL] <command> [<arguments>...]
   EXPECT_FATAL_ERROR [MATCHES|STREQUAL] <message>...)
 ```
 

cmake/Assertion.cmake

@@ -357,7 +357,7 @@ endfunction()
 # Performs an assertion on the given command call.
 #
 # assert_call(
-#   CALL <command> [<arguments>...]
+#   [CALL] <command> [<arguments>...]
 #   EXPECT_FATAL_ERROR [MATCHES|STREQUAL] <message>...)
 #
 # This function performs an assertion on the function or macro named
@@ -375,6 +375,10 @@ endfunction()
 function(assert_call)
   cmake_parse_arguments(PARSE_ARGV 0 ARG "" "" "CALL;EXPECT_FATAL_ERROR")
 
+  if(NOT DEFINED ARG_CALL)
+    set(ARG_CALL ${ARG_UNPARSED_ARGUMENTS})
+  endif()
+
   list(GET ARG_EXPECT_FATAL_ERROR 0 OPERATOR)
   if(OPERATOR MATCHES ^MATCHES|STREQUAL$)
     list(REMOVE_AT ARG_EXPECT_FATAL_ERROR 0)