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 class TestStringClear final : public RunIn
  18 {
  19 public:
  20     void onMsgIterInit(const bt2::SelfMessageIterator self) override
  21     {
  22         /* Boilerplate to get a string field */
  23         const auto traceCls = self.component().createTraceClass();
  24         const auto streamCls = traceCls->createStreamClass();
  25         const auto eventCls = streamCls->createEventClass();
  26         const auto payloadCls = traceCls->createStructureFieldClass();
  27
  28         payloadCls->appendMember("str", *traceCls->createStringFieldClass());
  29         eventCls->payloadFieldClass(*payloadCls);
  30
  31         const auto trace = traceCls->instantiate();
  32         const auto stream = streamCls->instantiate(*trace);
  33         const auto msg = self.createEventMessage(*eventCls, *stream);
  34         const auto field = (*msg->event().payloadField())["str"]->asString();
  35
  36         /* Set the field to a known non-empty value */
  37         *field = "pomme";
  38         BT_ASSERT(field.value() == "pomme");
  39
  40         /* Clear the field, verify its value and length */
  41         field.clear();
  42         ok(field.value() == "", "string field is empty");
  43         ok(field.length() == 0, "string field length is 0");
  44     }
  45 };
  46
  47 } /* namespace */
  48
  49 int main()
  50 {
  51     plan_tests(NR_TESTS);
  52
  53     TestStringClear testStringClear;
  54     runIn(testStringClear);
  55
  56     return exit_status();
  57 }