Fix test skipping (#1118)

**Issue:**

The SKIP code worked in `aws-crt-cpp`'s tests, but not in any `aws-c-*` tests

**Description of changes:**

- Set SKIP_RETURN_CODE in CMake script that generates C test runner (the CPP script had it, but not the C script)
- Skip leak checks when a test is skipped
    - this keeps the tests simple, you can bail out in the middle without cleaning up

cmake/AwsTestHarness.cmake

@@ -59,6 +59,7 @@ function(generate_test_driver driver_exe_name)
 
     foreach(name IN LISTS TEST_CASES)
         add_test(${name} ${driver_exe_name} "${name}")
+        set_tests_properties("${name}" PROPERTIES SKIP_RETURN_CODE ${SKIP_RETURN_CODE_VALUE})
     endforeach()
 
     # Clear test cases in case another driver needs to be generated

include/aws/testing/aws_test_harness.h

@@ -83,18 +83,6 @@ static int s_cunit_failure_message0(
  * that may be returned from various tools (e.g. sanitizer). */
 #define SKIP (103)
 
-#define POSTSKIP_INTERNAL()                                                                                            \
-    do {                                                                                                               \
-        return SKIP;                                                                                                   \
-    } while (0)
-
-#define RETURN_SKIP(format, ...)                                                                                       \
-    do {                                                                                                               \
-        printf(format, ##__VA_ARGS__);                                                                                 \
-        printf("\n");                                                                                                  \
-        POSTSKIP_INTERNAL();                                                                                           \
-    } while (0)
-
 #define RETURN_SUCCESS(format, ...)                                                                                    \
     do {                                                                                                               \
         printf(format, ##__VA_ARGS__);                                                                                 \
@@ -468,7 +456,7 @@ static inline int s_aws_run_test_case(struct aws_test_harness *harness) {
         test_res |= harness->on_after(allocator, setup_res, harness->ctx);
     }
 
-    if (test_res != AWS_OP_SUCCESS && test_res != AWS_OP_SKIP) {
+    if (test_res != AWS_OP_SUCCESS) {
         goto fail;
     }
 
@@ -492,21 +480,21 @@ static inline int s_aws_run_test_case(struct aws_test_harness *harness) {
     aws_logger_set(NULL);
     aws_logger_clean_up(&err_logger);
 
-    if (test_res == AWS_OP_SUCCESS) {
-        RETURN_SUCCESS("%s [ \033[32mOK\033[0m ]", harness->test_name);
-    } else if (test_res == AWS_OP_SKIP) {
-        RETURN_SKIP("%s [ \033[32mSKIP\033[0m ]", harness->test_name);
-    }
+    RETURN_SUCCESS("%s [ \033[32mOK\033[0m ]", harness->test_name);
 
 fail:
-    PRINT_FAIL_WITHOUT_LOCATION("%s [ \033[31mFAILED\033[0m ]", harness->test_name);
+    if (test_res == AWS_OP_SKIP) {
+        fprintf(AWS_TESTING_REPORT_FD, "%s [ \033[32mSKIP\033[0m ]\n", harness->test_name);
+    } else {
+        PRINT_FAIL_WITHOUT_LOCATION("%s [ \033[31mFAILED\033[0m ]", harness->test_name);
+    }
     /* Use _Exit() to terminate without cleaning up resources.
      * This prevents LeakSanitizer spam (yes, we know failing tests don't bother cleaning up).
      * It also prevents errors where threads that haven't cleaned are still using the logger declared in this fn. */
     fflush(AWS_TESTING_REPORT_FD);
     fflush(stdout);
     fflush(stderr);
-    _Exit(FAILURE);
+    _Exit(test_res == AWS_OP_SKIP ? SKIP : FAILURE);
 }
 
 /* Enables terminal escape sequences for text coloring on Windows. */

tests/thread_test.c

@@ -243,7 +243,7 @@ static int s_test_managed_thread_join_timeout(struct aws_allocator *allocator, v
     /*
      * Increase the timeout and shut down
      */
-    aws_thread_set_managed_join_timeout_ns(aws_timestamp_convert(5, AWS_TIMESTAMP_SECS, AWS_TIMESTAMP_NANOS, NULL));
+    aws_thread_set_managed_join_timeout_ns(aws_timestamp_convert(10, AWS_TIMESTAMP_SECS, AWS_TIMESTAMP_NANOS, NULL));
 
     aws_common_library_clean_up();