[test] Name jslib tests consistently and group together. NFC (emscripten-core#23293)

Author: sbc100

site/source/docs/porting/connecting_cpp_and_javascript/Interacting-with-code.rst

@@ -373,7 +373,7 @@ By default, the implementation is added to **library.js** (and this is
 where you'll find parts of Emscripten's *libc*). You can put
 the JavaScript implementation in your own library file and add it using
 the :ref:`emcc option <emcc-js-library>` ``--js-library``. See
-`test_js_libraries`_ in **test/test_other.py** for a complete working
+`test_jslib`_ in **test/test_other.py** for a complete working
 example, including the syntax you should use inside the JavaScript library
 file.
 
@@ -844,7 +844,7 @@ or compile the same binding code to both Node.js native addon and WebAssembly,
 you can give it a try. See `Emnapi documentation`_ for more details.
 
 .. _library.js: https://github.com/emscripten-core/emscripten/blob/main/src/library.js
-.. _test_js_libraries: https://github.com/emscripten-core/emscripten/blob/1.29.12/tests/test_core.py#L5043
+.. _test_jslib: https://github.com/emscripten-core/emscripten/blob/1.29.12/tests/test_core.py#L5043
 .. _tools/system_libs.py: https://github.com/emscripten-core/emscripten/blob/main/tools/system_libs.py
 .. _library_\*.js: https://github.com/emscripten-core/emscripten/tree/main/src
 .. _test_add_function in test/test_core.py: https://github.com/emscripten-core/emscripten/blob/1.29.12/tests/test_core.py#L6237

test/core/js_library_i64_params.c test/core/test_jslib_i64_params.ctest/core/js_library_i64_params.c renamed to test/core/test_jslib_i64_params.c

@@ -6161,13 +6161,12 @@ def test_random_device(self):
   def test_reinterpreted_ptrs(self):
     self.do_core_test('test_reinterpreted_ptrs.cpp')
 
-  def test_js_libraries(self):
-    create_file('main.cpp', '''
+  def test_jslib(self):
+    create_file('main.c', '''
       #include <stdio.h>
-      extern "C" {
-        extern void printey();
-        extern int calcey(int x, int y);
-      }
+      void printey();
+      int calcey(int x, int y);
+
       int main() {
         printey();
         printf("*%d*\\n", calcey(10, 22));
@@ -6186,7 +6185,7 @@ def test_js_libraries(self):
     ''')
 
     self.emcc_args += ['--js-library', 'mylib1.js', '--js-library', 'mylib2.js']
-    self.do_runf('main.cpp', 'hello from lib!\n*32*\n')
+    self.do_runf('main.c', 'hello from lib!\n*32*\n')
 
   @with_env_modify({'LC_ALL': 'latin-1', 'PYTHONUTF8': '0', 'PYTHONCOERCECLOCALE': '0'})
   @crossplatform
@@ -9536,11 +9535,11 @@ def test_syscall_intercept(self):
     self.do_core_test('test_syscall_intercept.c')
 
   @also_with_wasm_bigint
-  def test_js_library_i64_params(self):
+  def test_jslib_i64_params(self):
     # Tests the defineI64Param and receiveI64ParamAsI53 helpers that are
     # used to recieve i64 argument in syscalls.
-    self.emcc_args += ['--js-library=' + test_file('core/js_library_i64_params.js')]
-    self.do_core_test('js_library_i64_params.c')
+    self.emcc_args += ['--js-library=' + test_file('core/test_jslib_i64_params.js')]
+    self.do_core_test('test_jslib_i64_params.c')
 
   def test_main_reads_args(self):
     self.run_process([EMCC, '-c', test_file('core/test_main_reads_args_real.c'), '-o', 'real.o'] + self.get_emcc_args(compile_only=True))