From 2266a60c67030823770f3d69a0ae74a98f1685be Mon Sep 17 00:00:00 2001
From: Thomas Madlener <thomas.madlener@desy.de>
Date: Mon, 19 Sep 2022 14:24:43 +0200
Subject: [PATCH] Add basic tests for the EmptyEventCreator source

---
 .../include/TestEmptyEventCreator.h           | 28 +++++++++
 test/marlintest/src/TestEmptyEventCreator.cc  | 59 +++++++++++++++++++
 test/testmarlin/CMakeLists.txt                | 13 ++++
 test/testmarlin/empty_event_creator.xml       | 22 +++++++
 4 files changed, 122 insertions(+)
 create mode 100644 test/marlintest/include/TestEmptyEventCreator.h
 create mode 100644 test/marlintest/src/TestEmptyEventCreator.cc
 create mode 100644 test/testmarlin/empty_event_creator.xml

diff --git a/test/marlintest/include/TestEmptyEventCreator.h b/test/marlintest/include/TestEmptyEventCreator.h
new file mode 100644
index 00000000..5850cd30
--- /dev/null
+++ b/test/marlintest/include/TestEmptyEventCreator.h
@@ -0,0 +1,28 @@
+#ifndef TestEmptyEventCreator_h
+#define TestEmptyEventCreator_h 1
+
+#include "marlin/Processor.h"
+
+#include "lcio.h"
+
+/** Test processor to check that the EmptyEventCreator data source produces the
+ * expected empty events
+ */
+class TestEmptyEventCreator : public marlin::Processor {
+
+public:
+  TestEmptyEventCreator *newProcessor() override {
+    return new TestEmptyEventCreator;
+  }
+
+  TestEmptyEventCreator();
+
+  void processRunHeader(lcio::LCRunHeader *run) override;
+
+  void processEvent(lcio::LCEvent *evt) override;
+
+private:
+  int m_expectedEvt{0};
+};
+
+#endif
diff --git a/test/marlintest/src/TestEmptyEventCreator.cc b/test/marlintest/src/TestEmptyEventCreator.cc
new file mode 100644
index 00000000..17d4cf00
--- /dev/null
+++ b/test/marlintest/src/TestEmptyEventCreator.cc
@@ -0,0 +1,59 @@
+#include "TestEmptyEventCreator.h"
+
+#include <string>
+#include <vector>
+
+TestEmptyEventCreator aTestEmptyEventCreator;
+
+TestEmptyEventCreator::TestEmptyEventCreator()
+    : marlin::Processor("TestEmptyEventCreator") {
+  _description = "Processor to test whether the EmptyEventCreator data source "
+                 "works as expected";
+}
+
+void TestEmptyEventCreator::processRunHeader(lcio::LCRunHeader *run) {
+  if (run->getRunNumber() != 0) {
+    throw lcio::Exception("Run number from EmptyEventCreator is not 0 (" +
+                          std::to_string(run->getRunNumber()) + ")");
+  }
+}
+
+void TestEmptyEventCreator::processEvent(lcio::LCEvent *evt) {
+  if (evt->getEventNumber() != m_expectedEvt) {
+    throw lcio::Exception(
+        "Event number from EmptyEventCreator is not as expected (expected: " +
+        std::to_string(m_expectedEvt) +
+        ", actual: " + std::to_string(evt->getEventNumber()) + ")");
+  }
+
+  if (!evt->getCollectionNames()->empty()) {
+    throw lcio::Exception(
+        "EmptyEventCreator should create empty events, but LCEvent contains " +
+        std::to_string(evt->getCollectionNames()->size()) + " collections");
+  }
+
+  const auto &params = evt->getParameters();
+
+  std::vector<std::string> keys;
+  params.getIntKeys(keys);
+  if (!keys.empty()) {
+    throw lcio::Exception(
+        "EmptyEventCreator should create empty events, but has int parameters");
+  }
+  keys.clear();
+
+  params.getFloatKeys(keys);
+  if (!keys.empty()) {
+    throw lcio::Exception("EmptyEventCreator should create empty events, but "
+                          "has float parameters");
+  }
+  keys.clear();
+
+  params.getStringKeys(keys);
+  if (!keys.empty()) {
+    throw lcio::Exception("EmptyEventCreator should create empty events, but "
+                          "has string parameters");
+  }
+
+  m_expectedEvt++;
+}
diff --git a/test/testmarlin/CMakeLists.txt b/test/testmarlin/CMakeLists.txt
index 3921e9df..c844ea7b 100644
--- a/test/testmarlin/CMakeLists.txt
+++ b/test/testmarlin/CMakeLists.txt
@@ -63,3 +63,16 @@ SET_TESTS_PROPERTIES( t_includeandconstants PROPERTIES PASS_REGULAR_EXPRESSION "
 
 
 #---------------------------------------------------------------------------------------
+
+#---------------------------------------------------------------------------------------
+SET( MARLIN_STEERING_FILE empty_event_creator.xml )
+SET( MARLIN_INPUT_FILES
+  ${CMAKE_CURRENT_SOURCE_DIR}/${MARLIN_STEERING_FILE}
+  ${CMAKE_CURRENT_SOURCE_DIR}/gear_simjob.xml
+  ${CMAKE_CURRENT_SOURCE_DIR}/simjob.slcio
+)
+CONFIGURE_FILE( runmarlin.cmake.in empty_event_creator.cmake @ONLY )
+
+ADD_TEST( t_empty_event_creator "${CMAKE_COMMAND}" -P empty_event_creator.cmake )
+SET_TESTS_PROPERTIES( t_empty_event_creator PROPERTIES FAIL_REGULAR_EXPRESSION "Marlin will have to be terminated, sorry." )
+#---------------------------------------------------------------------------------------
diff --git a/test/testmarlin/empty_event_creator.xml b/test/testmarlin/empty_event_creator.xml
new file mode 100644
index 00000000..c9825d17
--- /dev/null
+++ b/test/testmarlin/empty_event_creator.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<marlin xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://ilcsoft.desy.de/marlin/marlin.xsd">
+
+  <execute>
+    <processor name="EmptyEventCreator"/>
+    <processor name="MyTestEmptyEventCreator"/>
+  </execute>
+
+  <global>
+    <parameter name="MaxRecordNumber" value="10"/>
+  </global>
+
+  <processor name="EmptyEventCreator" type="EmptyEventCreator"/>
+
+  <processor name="MyTestEmptyEventCreator" type="TestEmptyEventCreator">
+    <!--Processor to test whether the EmptyEventCreator data source works as expected-->
+    <!--verbosity level of this processor ("DEBUG0-4,MESSAGE0-4,WARNING0-4,ERROR0-4,SILENT")-->
+    <!--parameter name="Verbosity" type="string">DEBUG </parameter-->
+  </processor>
+
+</marlin>