Ensure multiple library unit-test can be executed within single OS boot

src/usr/include/testing.h

@@ -44,8 +44,10 @@ static int test_count_failure;
     } while (0)
 #define TEST_SUMMARY()                                                         \
     do {                                                                       \
-        std::printf("TEST_SUCCESS_COUNT: %d\n", test_count_success);           \
-        std::printf("TEST_FAILURE_COUNT: %d\n", test_count_failure);           \
+        std::printf("[%s] TEST_SUCCESS_COUNT: %d\n", __FILE__,                 \
+                    test_count_success);                                       \
+        std::printf("[%s] TEST_FAILURE_COUNT: %d\n", __FILE__,                 \
+                    test_count_failure);                                       \
     } while (0)
 
 #ifdef __cplusplus

tests/app/libraries/usr_lib_test.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# Test is supposed to be sourced from shell_test.sh
+
+function add_library_unit_test {
+    QEMU_SCREENSHOT_NAME="usr_lib_${1:?}.ppm"
+
+    python3 -m tests.qemu.monitor -p ${MONITOR_PORT:?} -sc ${1:?}
+
+    test_create_screen_dump
+    test_screen_content $LINENO "\[.*/usr/local/src/${1:?}.cpp\] TEST_FAILURE_COUNT: 0"
+}
+
+add_library_unit_test "test-string"

tests/app/shell_test.sh

@@ -9,4 +9,4 @@ source tests/app/ls_test.sh
 source tests/app/tictactoe_test.sh
 source tests/app/cat_test.sh
 source tests/app/multiprocessing_test.sh
-source tests/app/libraries/usr_lib_string_test.sh
+source tests/app/libraries/usr_lib_test.sh