chore: use internal namespace in 40_testing.js (#21141)

Towards #21136 

- [x] assign serializePermissions, setTimeout and setExitHandler APIs to
internal namespace
- [x] remove usage of assert

1 files changed, 3 insertions, 3 deletions

diff --git a/cli/tests/testdata/test/exit_sanitizer.out b/cli/tests/testdata/test/exit_sanitizer.out
index 4910501fa..684001475 100644
--- a/cli/tests/testdata/test/exit_sanitizer.out
+++ b/cli/tests/testdata/test/exit_sanitizer.out
@@ -7,21 +7,21 @@ exit(2) ... FAILED ([WILDCARD])
  ERRORS 
 
 exit(0) => ./test/exit_sanitizer.ts:[WILDCARD]
-error: AssertionError: Test case attempted to exit with exit code: 0
+error: Error: Test case attempted to exit with exit code: 0
   Deno.exit(0);
        ^
     at [WILDCARD]
     at [WILDCARD]/test/exit_sanitizer.ts:2:8
 
 exit(1) => ./test/exit_sanitizer.ts:[WILDCARD]
-error: AssertionError: Test case attempted to exit with exit code: 1
+error: Error: Test case attempted to exit with exit code: 1
   Deno.exit(1);
        ^
     at [WILDCARD]
     at [WILDCARD]/test/exit_sanitizer.ts:6:8
 
 exit(2) => ./test/exit_sanitizer.ts:[WILDCARD]
-error: AssertionError: Test case attempted to exit with exit code: 2
+error: Error: Test case attempted to exit with exit code: 2
   Deno.exit(2);
        ^
     at [WILDCARD]