Add knob for default core output verbosity

1 files changed, 62 insertions, 0 deletions

diff --git a/test/core/support/log_test.c b/test/core/support/log_test.c
index b39b069913..0ae298aa4c 100644
--- a/test/core/support/log_test.c
+++ b/test/core/support/log_test.c
@@ -33,16 +33,40 @@
 
 #include <grpc/support/log.h>
 
+#include <stdbool.h>
 #include <string.h>
 
+#include "src/core/lib/support/env.h"
 #include "test/core/util/test_config.h"
 
+static bool log_func_reached = false;
+
 static void test_callback(gpr_log_func_args *args) {
   GPR_ASSERT(0 == strcmp(__FILE__, args->file));
   GPR_ASSERT(args->severity == GPR_LOG_SEVERITY_INFO);
   GPR_ASSERT(0 == strcmp(args->message, "hello 1 2 3"));
 }
 
+static void test_should_log(gpr_log_func_args *args) {
+  log_func_reached = true;
+}
+
+static void test_should_not_log(gpr_log_func_args *args) { GPR_ASSERT(false); }
+
+#define test_log_function_reached(SEVERITY)     \
+  gpr_set_log_function(test_should_log);        \
+  log_func_reached = false;                     \
+  gpr_log_message(SEVERITY, "hello 1 2 3");     \
+  GPR_ASSERT(log_func_reached);                 \
+  log_func_reached = false;                     \
+  gpr_log(SEVERITY, "hello %d %d %d", 1, 2, 3); \
+  GPR_ASSERT(log_func_reached);
+
+#define test_log_function_unreached(SEVERITY) \
+  gpr_set_log_function(test_should_not_log);  \
+  gpr_log_message(SEVERITY, "hello 1 2 3");   \
+  gpr_log(SEVERITY, "hello %d %d %d", 1, 2, 3);
+
 int main(int argc, char **argv) {
   grpc_test_init(argc, argv);
   /* test logging at various verbosity levels */
@@ -54,6 +78,44 @@ int main(int argc, char **argv) {
   gpr_set_log_function(test_callback);
   gpr_log_message(GPR_INFO, "hello 1 2 3");
   gpr_log(GPR_INFO, "hello %d %d %d", 1, 2, 3);
+
+  /* gpr_log_verbosity_init() will be effective only once, and only before
+   * gpr_set_log_verbosity() is called */
+  gpr_setenv("GRPC_VERBOSITY", "ERROR");
+  gpr_log_verbosity_init();
+  test_log_function_reached(GPR_ERROR);
+  test_log_function_unreached(GPR_INFO);
+  test_log_function_unreached(GPR_DEBUG);
+
+  /* gpr_log_verbosity_init() should not be effective */
+  gpr_setenv("GRPC_VERBOSITY", "DEBUG");
+  gpr_log_verbosity_init();
+  test_log_function_reached(GPR_ERROR);
+  test_log_function_unreached(GPR_INFO);
+  test_log_function_unreached(GPR_DEBUG);
+
+  gpr_set_log_verbosity(GPR_LOG_SEVERITY_DEBUG);
+  test_log_function_reached(GPR_ERROR);
+  test_log_function_reached(GPR_INFO);
+  test_log_function_reached(GPR_DEBUG);
+
+  gpr_set_log_verbosity(GPR_LOG_SEVERITY_INFO);
+  test_log_function_reached(GPR_ERROR);
+  test_log_function_reached(GPR_INFO);
+  test_log_function_unreached(GPR_DEBUG);
+
+  gpr_set_log_verbosity(GPR_LOG_SEVERITY_ERROR);
+  test_log_function_reached(GPR_ERROR);
+  test_log_function_unreached(GPR_INFO);
+  test_log_function_unreached(GPR_DEBUG);
+
+  /* gpr_log_verbosity_init() should not be effective */
+  gpr_setenv("GRPC_VERBOSITY", "DEBUG");
+  gpr_log_verbosity_init();
+  test_log_function_reached(GPR_ERROR);
+  test_log_function_unreached(GPR_INFO);
+  test_log_function_unreached(GPR_DEBUG);
+
   /* TODO(ctiller): should we add a GPR_ASSERT failure test here */
   return 0;
 }