Ensure single newline at EOF for core files (#11310)

tests/basic/config.h

@@ -14,10 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef TESTS_BASIC_CONFIG_H_
-#define TESTS_BASIC_CONFIG_H_
+#pragma once
 
 #define MATRIX_ROWS 4
 #define MATRIX_COLS 10
-
-#endif /* TESTS_BASIC_CONFIG_H_ */

tests/basic/rules.mk

@@ -13,4 +13,4 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-CUSTOM_MATRIX=yes
+CUSTOM_MATRIX=yes

tests/basic/test_macro.cpp

@@ -68,4 +68,4 @@ TEST_F(Macro, PlayASimpleMacro) {
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport(KC_LSFT))).AT_TIME(210);
     EXPECT_CALL(driver, send_keyboard_mock(KeyboardReport())).AT_TIME(220);
     run_one_scan_loop();
-}
+}