tests/lib/test-fields-bin.cpp

   1 /*
   2  * SPDX-License-Identifier: GPL-2.0-only
   3  *
   4  * Copyright (C) 2023 EfficiOS Inc.
   5  */
   6
   7 #include "common/assert.h"
   8
   9 #include "utils/run-in.hpp"
  10
  11 #include "tap/tap.h"
  12
  13 namespace {
  14
  15 constexpr int NR_TESTS = 2;
  16
  17 void testStringClear() noexcept
  18 {
  19     runInMsgIterClsInit([](const bt2::SelfMessageIterator self) {
  20         /* Boilerplate to get a string field */
  21         const auto traceCls = self.component().createTraceClass();
  22         const auto streamCls = traceCls->createStreamClass();
  23         const auto eventCls = streamCls->createEventClass();
  24         const auto payloadCls = traceCls->createStructureFieldClass();
  25
  26         payloadCls->appendMember("str", *traceCls->createStringFieldClass());
  27         eventCls->payloadFieldClass(*payloadCls);
  28
  29         const auto trace = traceCls->instantiate();
  30         const auto stream = streamCls->instantiate(*trace);
  31         const auto msg = self.createEventMessage(*eventCls, *stream);
  32         const auto field = (*msg->event().payloadField())["str"]->asString();
  33
  34         /* Set the field to a known non-empty value */
  35         *field = "pomme";
  36         BT_ASSERT(field.value() == "pomme");
  37
  38         /* Clear the field, verify its value and length */
  39         field.clear();
  40         ok(field.value() == "", "string field is empty");
  41         ok(field.length() == 0, "string field length is 0");
  42     });
  43 }
  44
  45 } /* namespace */
  46
  47 int main()
  48 {
  49     plan_tests(NR_TESTS);
  50
  51     testStringClear();
  52
  53     return exit_status();
  54 }