test: add regression tests for tt_detail off

Split tt_detail_off_with_custom_wrapper into two tests that verify agent
wraps user functions correctly using API and configuration and that it
correctly sends span events for custom wrapped functions when tt_detail
is off.

tests/regression/test_tt_detail_off_with_custom_wrapper_api.php

@@ -0,0 +1,100 @@
+<?php
+/*
+ * Copyright 2020 New Relic Corporation. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/*DESCRIPTION
+When transaction tracer details are disabled, test that only calls to custom wrapped functions appear as spans in span events after they have been wrapped using API.
+*/
+
+/*INI
+newrelic.transaction_tracer.detail = 0
+newrelic.special.expensive_node_min = 50us
+*/
+
+/*EXPECT
+function_exceeding_tt_detail_threshold called
+custom_function_not_exceeding_tt_detail_threshold called
+function_exceeding_tt_detail_threshold called
+custom_function_not_exceeding_tt_detail_threshold called
+No alarms and no surprises.
+*/
+
+/*EXPECT_SPAN_EVENTS
+[
+  "?? agent run id",
+  {
+    "reservoir_size": 10000,
+    "events_seen": 2
+  },
+  [
+    [
+      {
+        "category": "generic",
+        "type": "Span",
+        "guid": "??",
+        "traceId": "??",
+        "transactionId": "??",
+        "name": "OtherTransaction/php__FILE__",
+        "timestamp": "??",
+        "duration": "??",
+        "priority": "??",
+        "sampled": true,
+        "nr.entryPoint": true,
+        "transaction.name": "OtherTransaction/php__FILE__"
+      },
+      {},
+      {}
+    ],
+    [
+      {
+        "category": "generic",
+        "type": "Span",
+        "guid": "??",
+        "traceId": "??",
+        "transactionId": "??",
+        "name": "Custom\/custom_function_not_exceeding_tt_detail_threshold",
+        "timestamp": "??",
+        "duration": "??",
+        "priority": "??",
+        "sampled": true,
+        "parentId": "??"
+      },
+      {},
+      {
+        "code.lineno": "??",
+        "code.filepath": "__FILE__",
+        "code.function": "custom_function_not_exceeding_tt_detail_threshold"
+      }
+    ]
+  ]
+]
+*/
+
+function function_exceeding_tt_detail_threshold() {
+  error_reporting(error_reporting()); // prevent from optimizing this function away
+  time_nanosleep(0, 100 * 1000); // 100 microseconds should be enough (= 2 x newrelic.special.expensive_node_min)
+  echo 'function_exceeding_tt_detail_threshold called' . PHP_EOL;
+}
+
+function custom_function_not_exceeding_tt_detail_threshold() {
+  error_reporting(error_reporting()); // prevent from optimizing this function away
+  time_nanosleep(0, 100 * 1000); // 100 microseconds should be enough (= 2 x newrelic.special.expensive_node_min)
+  echo 'custom_function_not_exceeding_tt_detail_threshold called' . PHP_EOL;
+}
+
+// These calls will not be a span in span events
+function_exceeding_tt_detail_threshold();
+custom_function_not_exceeding_tt_detail_threshold();
+
+// Add a custom wrapper to ensure that all future calls will be recorded as spans in span events
+newrelic_add_custom_tracer('custom_function_not_exceeding_tt_detail_threshold');
+
+// This call will not be a span in span events
+function_exceeding_tt_detail_threshold();
+
+// This call will be a span in span events
+custom_function_not_exceeding_tt_detail_threshold();
+
+echo 'No alarms and no surprises.'  . PHP_EOL;

tests/regression/test_tt_detail_off_with_custom_wrapper.php → tests/regression/test_tt_detail_off_with_custom_wrapper_config.php

@@ -5,12 +5,13 @@
  */
 
 /*DESCRIPTION
-When transaction tracer details are disabled, test that only calls to custom wrapped functions appear as spans in span events after they have been wrapped.
+When transaction tracer details are disabled, test that only calls to custom wrapped functions appear as spans in span events after they have been wrapped using config.
 */
 
 /*INI
 newrelic.transaction_tracer.detail = 0
 newrelic.special.expensive_node_min = 50us
+newrelic.transaction_tracer.custom = "custom_function_not_exceeding_tt_detail_threshold"
 */
 
 /*EXPECT
@@ -52,7 +53,7 @@
         "guid": "??",
         "traceId": "??",
         "transactionId": "??",
-        "name": "Custom\/my_custom_function",
+        "name": "Custom\/custom_function_not_exceeding_tt_detail_threshold",
         "timestamp": "??",
         "duration": "??",
         "priority": "??",
@@ -63,26 +64,29 @@
       {
         "code.lineno": "??",
         "code.filepath": "__FILE__",
-        "code.function": "my_custom_function"
+        "code.function": "custom_function_not_exceeding_tt_detail_threshold"
       }
     ]
   ]
 ]
 */
 
-function my_custom_function() {
+function function_exceeding_tt_detail_threshold() {
   error_reporting(error_reporting()); // prevent from optimizing this function away
   time_nanosleep(0, 100 * 1000); // 100 microseconds should be enough (= 2 x newrelic.special.expensive_node_min)
-  echo 'my_custom_function called' . PHP_EOL;
+  echo 'function_exceeding_tt_detail_threshold called' . PHP_EOL;
 }
 
-// This call will not be a span in span events
-my_custom_function();
-
-// Add a custom wrapper to ensure that all future calls will be recorded as spans in span events
-newrelic_add_custom_tracer('my_custom_function');
+function custom_function_not_exceeding_tt_detail_threshold() {
+  error_reporting(error_reporting()); // prevent from optimizing this function away
+  time_nanosleep(0, 100 * 1000); // 100 microseconds should be enough (= 2 x newrelic.special.expensive_node_min)
+  echo 'custom_function_not_exceeding_tt_detail_threshold called' . PHP_EOL;
+}
 
 // This call will not be a span in span events
-my_custom_function();
+function_exceeding_tt_detail_threshold();
+
+// This call will be a span in span events
+custom_function_not_exceeding_tt_detail_threshold();
 
 echo 'No alarms and no surprises.'  . PHP_EOL;