feat: rename option in assert_fatal_error to EXPECT_MESSAGE

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

README.md

@@ -71,7 +71,7 @@ assert_execute_process(
 
 assert_fatal_error(
   CALL git_clone https://github.com GITHUB_DIR
-  MESSAGE "failed to clone 'https://github.com'")
+  EXPECT_MESSAGE "failed to clone 'https://github.com'")
 ```
 
 ### Test Creation
@@ -174,7 +174,8 @@ to be defined
 Asserts whether a command call throws a fatal error message.
 
 ```cmake
-assert_fatal_error(CALL <command> [<arguments>...] MESSAGE <message>...)
+assert_fatal_error(
+  CALL <command> [<arguments>...] EXPECT_MESSAGE <message>...)
 ```
 
 This function asserts whether a function or macro named `<command>`, called with the specified `<arguments>`, throws a fatal error message that matches the expected `<message>`.
@@ -190,7 +191,7 @@ endfunction()
 
 assert_fatal_error(
   CALL throw_fatal_error "some message"
-  MESSAGE "some message")
+  EXPECT_MESSAGE "some message")
 ```
 
 The above example asserts whether the call to `throw_fatal_error("some message")` throws a fatal error message that matches `some message`. If it somehow does not capture any fatal error message, it will throw the following fatal error message:

cmake/Assertion.cmake

@@ -349,7 +349,8 @@ endfunction()
 
 # Asserts whether a command call throws a fatal error message.
 #
-# assert_fatal_error(CALL <command> [<arguments>...] MESSAGE <message>...)
+# assert_fatal_error(
+#   CALL <command> [<arguments>...] EXPECT_MESSAGE <message>...)
 #
 # This function asserts whether a function or macro named `<command>`, called
 # with the specified `<arguments>`, throws a fatal error message that matches
@@ -358,8 +359,8 @@ endfunction()
 # If more than one `<message>` string is given, they are concatenated into a
 # single message with no separator between the strings.
 function(assert_fatal_error)
-  cmake_parse_arguments(PARSE_ARGV 0 ARG "" "" "CALL;MESSAGE")
-  string(JOIN "" EXPECTED_MESSAGE ${ARG_MESSAGE})
+  cmake_parse_arguments(PARSE_ARGV 0 ARG "" "" "CALL;EXPECT_MESSAGE")
+  string(JOIN "" EXPECTED_MESSAGE ${ARG_EXPECT_MESSAGE})
 
   # Override the `message` function if it has not been overridden.
   get_property(MESSAGE_MOCKED GLOBAL PROPERTY _assert_internal_message_mocked)