tools: merge nfd-status into nfdc

nfd-status functionality is accessible through `nfdc legacy-nfd-status` subcommand,
and nfd-status is replaced with a shell script calling this subcommand.

refs #3749

Change-Id: Iab03f3bc9ddb4333a0b6ca5fb9c67f54e9960ab4
diff --git a/tests/tools/nfdc/status-report.t.cpp b/tests/tools/nfdc/status-report.t.cpp
new file mode 100644
index 0000000..2d89868
--- /dev/null
+++ b/tests/tools/nfdc/status-report.t.cpp
@@ -0,0 +1,220 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (c) 2014-2016,  Regents of the University of California,
+ *                           Arizona Board of Regents,
+ *                           Colorado State University,
+ *                           University Pierre & Marie Curie, Sorbonne University,
+ *                           Washington University in St. Louis,
+ *                           Beijing Institute of Technology,
+ *                           The University of Memphis.
+ *
+ * This file is part of NFD (Named Data Networking Forwarding Daemon).
+ * See AUTHORS.md for complete list of NFD authors and contributors.
+ *
+ * NFD is free software: you can redistribute it and/or modify it under the terms
+ * of the GNU General Public License as published by the Free Software Foundation,
+ * either version 3 of the License, or (at your option) any later version.
+ *
+ * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "nfdc/status-report.hpp"
+#include "core/scheduler.hpp"
+
+#include "module-fixture.hpp"
+
+namespace nfd {
+namespace tools {
+namespace nfdc {
+namespace tests {
+
+const std::string STATUS_XML = stripXmlSpaces(R"XML(
+  <?xml version="1.0"?>
+  <nfdStatus xmlns="ndn:/localhost/nfd/status/1">
+    <module1/>
+    <module2/>
+  </nfdStatus>
+)XML");
+
+const std::string STATUS_TEXT = std::string(R"TEXT(
+module1
+module2
+)TEXT").substr(1);
+
+class DummyModule : public Module
+{
+public:
+  explicit
+  DummyModule(const std::string& moduleName)
+    : m_moduleName(moduleName)
+    , m_res(0)
+    , m_delay(time::milliseconds(1))
+  {
+  }
+
+  /** \brief cause fetchStatus to succeed or fail
+   *  \param res zero to succeed, non-zero to fail with specific code
+   *  \param delay duration from fetchStatus invocation to succeed or fail; must be positive
+   */
+  void
+  setResult(uint32_t res, time::nanoseconds delay)
+  {
+    BOOST_ASSERT(delay > time::nanoseconds::zero());
+    m_res = res;
+    m_delay = delay;
+  }
+
+  virtual void
+  fetchStatus(Controller& controller,
+              const function<void()>& onSuccess,
+              const Controller::CommandFailCallback& onFailure,
+              const CommandOptions& options) override
+  {
+    ++nFetchStatusCalls;
+    scheduler::schedule(m_delay, [=] {
+      if (m_res == 0) {
+        onSuccess();
+      }
+      else {
+        onFailure(m_res, m_moduleName + " fails with code " + to_string(m_res));
+      }
+    });
+  }
+
+  virtual void
+  formatStatusXml(std::ostream& os) const override
+  {
+    os << '<' << m_moduleName << "/>";
+  }
+
+  virtual void
+  formatStatusText(std::ostream& os) const override
+  {
+    os << m_moduleName << '\n';
+  }
+
+public:
+  int nFetchStatusCalls = 0;
+
+private:
+  std::string m_moduleName;
+  uint32_t m_res;
+  time::nanoseconds m_delay;
+};
+
+class StatusReportTester : public StatusReport
+{
+private:
+  virtual void
+  processEvents(Face&) override
+  {
+    processEventsFunc();
+  }
+
+public:
+  std::function<void()> processEventsFunc;
+};
+
+class StatusReportModulesFixture : public IdentityManagementTimeFixture
+{
+protected:
+  StatusReportModulesFixture()
+    : face(g_io, m_keyChain)
+    , controller(face, m_keyChain, validator)
+    , res(0)
+  {
+  }
+
+  DummyModule&
+  addModule(const std::string& moduleName)
+  {
+    report.sections.push_back(make_unique<DummyModule>(moduleName));
+    return static_cast<DummyModule&>(*report.sections.back());
+  }
+
+  void
+  collect(time::nanoseconds tick, size_t nTicks)
+  {
+    report.processEventsFunc = [=] {
+      this->advanceClocks(tick, nTicks);
+    };
+    res = report.collect(face, m_keyChain, validator, CommandOptions());
+
+    if (res == 0) {
+      statusXml.str("");
+      report.formatXml(statusXml);
+      statusText.str("");
+      report.formatText(statusText);
+    }
+  }
+
+protected:
+  DummyClientFace face;
+  ValidatorNull validator;
+  Controller controller;
+  StatusReportTester report;
+
+  uint32_t res;
+  output_test_stream statusXml;
+  output_test_stream statusText;
+};
+
+
+BOOST_AUTO_TEST_SUITE(Nfdc)
+BOOST_FIXTURE_TEST_SUITE(TestStatusReport, StatusReportModulesFixture)
+
+BOOST_AUTO_TEST_CASE(Normal)
+{
+  DummyModule& m1 = addModule("module1");
+  m1.setResult(0, time::milliseconds(10));
+  DummyModule& m2 = addModule("module2");
+  m2.setResult(0, time::milliseconds(20));
+
+  this->collect(time::milliseconds(5), 6);
+
+  BOOST_CHECK_EQUAL(m1.nFetchStatusCalls, 1);
+  BOOST_CHECK_EQUAL(m2.nFetchStatusCalls, 1);
+
+  BOOST_CHECK_EQUAL(res, 0);
+  BOOST_CHECK(statusXml.is_equal(STATUS_XML));
+  BOOST_CHECK(statusText.is_equal(STATUS_TEXT));
+}
+
+BOOST_AUTO_TEST_CASE(Reorder)
+{
+  DummyModule& m1 = addModule("module1");
+  m1.setResult(0, time::milliseconds(20));
+  DummyModule& m2 = addModule("module2");
+  m2.setResult(0, time::milliseconds(10)); // module2 completes earlier than module1
+
+  this->collect(time::milliseconds(5), 6);
+
+  BOOST_CHECK_EQUAL(res, 0);
+  BOOST_CHECK(statusXml.is_equal(STATUS_XML)); // output is still in order
+  BOOST_CHECK(statusText.is_equal(STATUS_TEXT));
+}
+
+BOOST_AUTO_TEST_CASE(Error)
+{
+  DummyModule& m1 = addModule("module1");
+  m1.setResult(0, time::milliseconds(20));
+  DummyModule& m2 = addModule("module2");
+  m2.setResult(500, time::milliseconds(10));
+
+  this->collect(time::milliseconds(5), 6);
+
+  BOOST_CHECK_EQUAL(res, 1000500);
+}
+
+BOOST_AUTO_TEST_SUITE_END() // TestRibModule
+BOOST_AUTO_TEST_SUITE_END() // Nfdc
+
+} // namespace tests
+} // namespace nfdc
+} // namespace tools
+} // namespace nfd