Tests/CXXModules: fix error detection propagation

Tests/RunCMake/CXXModules/NinjaDependInfoBMIInstall-check.cmake

diff --git a/Tests/RunCMake/CXXModules/NinjaDependInfoBMIInstall-check.cmake b/Tests/RunCMake/CXXModules/NinjaDependInfoBMIInstall-check.cmake
index 0d08c44..124efa8 100644
--- a/Tests/RunCMake/CXXModules/NinjaDependInfoBMIInstall-check.cmake
+++ b/Tests/RunCMake/CXXModules/NinjaDependInfoBMIInstall-check.cmake
@@ -32,3 +32,5 @@
   file(READ "${CMAKE_CURRENT_LIST_DIR}/expect/NinjaDependInfoBMIInstall-private.json" expect_contents)
   check_json("${actual_contents}" "${expect_contents}")
 endif ()
+
+string(REPLACE ";" "\n  " RunCMake_TEST_FAILED "${RunCMake_TEST_FAILED}")

Tests/RunCMake/CXXModules/NinjaDependInfoExport-check.cmake

diff --git a/Tests/RunCMake/CXXModules/NinjaDependInfoExport-check.cmake b/Tests/RunCMake/CXXModules/NinjaDependInfoExport-check.cmake
index 7720257..b08b63f 100644
--- a/Tests/RunCMake/CXXModules/NinjaDependInfoExport-check.cmake
+++ b/Tests/RunCMake/CXXModules/NinjaDependInfoExport-check.cmake
@@ -32,3 +32,5 @@
   file(READ "${CMAKE_CURRENT_LIST_DIR}/expect/NinjaDependInfoExport-private.json" expect_contents)
   check_json("${actual_contents}" "${expect_contents}")
 endif ()
+
+string(REPLACE ";" "\n  " RunCMake_TEST_FAILED "${RunCMake_TEST_FAILED}")

Tests/RunCMake/CXXModules/NinjaDependInfoFileSet-check.cmake

diff --git a/Tests/RunCMake/CXXModules/NinjaDependInfoFileSet-check.cmake b/Tests/RunCMake/CXXModules/NinjaDependInfoFileSet-check.cmake
index b9a1315..785d123 100644
--- a/Tests/RunCMake/CXXModules/NinjaDependInfoFileSet-check.cmake
+++ b/Tests/RunCMake/CXXModules/NinjaDependInfoFileSet-check.cmake
@@ -32,3 +32,5 @@
   file(READ "${CMAKE_CURRENT_LIST_DIR}/expect/NinjaDependInfoFileSet-private.json" expect_contents)
   check_json("${actual_contents}" "${expect_contents}")
 endif ()
+
+string(REPLACE ";" "\n  " RunCMake_TEST_FAILED "${RunCMake_TEST_FAILED}")

Tests/RunCMake/CXXModules/check-json.cmake

diff --git a/Tests/RunCMake/CXXModules/check-json.cmake b/Tests/RunCMake/CXXModules/check-json.cmake
index 19d0c8a..0790b6b 100644
--- a/Tests/RunCMake/CXXModules/check-json.cmake
+++ b/Tests/RunCMake/CXXModules/check-json.cmake
@@ -22,6 +22,7 @@
   if (NOT actual_type STREQUAL expect_type)
     list(APPEND RunCMake_TEST_FAILED
       "Type mismatch at ${path}: ${actual_type} vs. ${expect_type}")
+    set(RunCMake_TEST_FAILED "${RunCMake_TEST_FAILED}" PARENT_SCOPE)
     return ()
   endif ()
 
@@ -53,6 +54,8 @@
   elseif (actual_type STREQUAL OBJECT)
     check_json_object("${path}" "${actual_value}" "${expect_value}")
   endif ()
+
+  set(RunCMake_TEST_FAILED "${RunCMake_TEST_FAILED}" PARENT_SCOPE)
 endfunction ()
 
 # Check that two arrays are the same.
@@ -82,6 +85,8 @@
     string(JSON expect_value GET "${expect}" "${idx}")
     check_json_value("${new_path}" "${actual_type}" "${expect_type}" "${actual_value}" "${expect_value}")
   endforeach ()
+
+  set(RunCMake_TEST_FAILED "${RunCMake_TEST_FAILED}" PARENT_SCOPE)
 endfunction ()
 
 # Check that two inner objects are the same.
@@ -148,13 +153,15 @@
     string(JSON expect_value GET "${expect}" "${key}")
     check_json_value("${new_path}" "${actual_type}" "${expect_type}" "${actual_value}" "${expect_value}")
   endforeach ()
+
+  set(RunCMake_TEST_FAILED "${RunCMake_TEST_FAILED}" PARENT_SCOPE)
 endfunction ()
 
 # Check that two JSON objects are the same.
 function (check_json actual expect)
   check_json_object("" "${actual}" "${expect}")
-endfunction ()
 
-string(REPLACE ";" "; " RunCMake_TEST_FAILED "${RunCMake_TEST_FAILED}")
+  set(RunCMake_TEST_FAILED "${RunCMake_TEST_FAILED}" PARENT_SCOPE)
+endfunction ()
 
 cmake_policy(POP)